Surface-active lipids in rhodococci
Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1998 |
|---|
| Umfang: |
12 |
|---|
| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
|---|---|
| Übergeordnetes Werk: |
in: Antonie van Leeuwenhoek - 1934, 74(1998) vom: Jan./März, Seite 59-70 |
| Übergeordnetes Werk: |
volume:74 ; year:1998 ; month:01/03 ; pages:59-70 ; extent:12 |
| Links: |
|---|
| Katalog-ID: |
NLEJ192935240 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLEJ192935240 | ||
| 003 | DE-627 | ||
| 005 | 20210707200817.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 070526s1998 xx |||||o 00| ||eng c | ||
| 035 | |a (DE-627)NLEJ192935240 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 245 | 1 | 0 | |a Surface-active lipids in rhodococci |
| 264 | 1 | |c 1998 | |
| 300 | |a 12 | ||
| 336 | |a nicht spezifiziert |b zzz |2 rdacontent | ||
| 337 | |a nicht spezifiziert |b z |2 rdamedia | ||
| 338 | |a nicht spezifiziert |b zu |2 rdacarrier | ||
| 520 | |a Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. | ||
| 533 | |f Springer Online Journal Archives 1860-2002 | ||
| 700 | 1 | |a Lang, Siegmund |4 oth | |
| 700 | 1 | |a Philp, Jim C |4 oth | |
| 773 | 0 | 8 | |i in |t Antonie van Leeuwenhoek |d 1934 |g 74(1998) vom: Jan./März, Seite 59-70 |w (DE-627)NLEJ188983511 |w (DE-600)1478112-8 |x 1572-9699 |7 nnns |
| 773 | 1 | 8 | |g volume:74 |g year:1998 |g month:01/03 |g pages:59-70 |g extent:12 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1023/A:1001799711799 |
| 912 | |a GBV_USEFLAG_U | ||
| 912 | |a ZDB-1-SOJ | ||
| 912 | |a GBV_NL_ARTICLE | ||
| 951 | |a AR | ||
| 952 | |d 74 |j 1998 |c 1/3 |h 59-70 |g 12 | ||
| matchkey_str |
article:15729699:1998----::ufcatvlpdi |
|---|---|
| hierarchy_sort_str |
1998 |
| publishDate |
1998 |
| allfields |
(DE-627)NLEJ192935240 DE-627 ger DE-627 rakwb eng Surface-active lipids in rhodococci 1998 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. Springer Online Journal Archives 1860-2002 Lang, Siegmund oth Philp, Jim C oth in Antonie van Leeuwenhoek 1934 74(1998) vom: Jan./März, Seite 59-70 (DE-627)NLEJ188983511 (DE-600)1478112-8 1572-9699 nnns volume:74 year:1998 month:01/03 pages:59-70 extent:12 http://dx.doi.org/10.1023/A:1001799711799 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 74 1998 1/3 59-70 12 |
| spelling |
(DE-627)NLEJ192935240 DE-627 ger DE-627 rakwb eng Surface-active lipids in rhodococci 1998 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. Springer Online Journal Archives 1860-2002 Lang, Siegmund oth Philp, Jim C oth in Antonie van Leeuwenhoek 1934 74(1998) vom: Jan./März, Seite 59-70 (DE-627)NLEJ188983511 (DE-600)1478112-8 1572-9699 nnns volume:74 year:1998 month:01/03 pages:59-70 extent:12 http://dx.doi.org/10.1023/A:1001799711799 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 74 1998 1/3 59-70 12 |
| allfields_unstemmed |
(DE-627)NLEJ192935240 DE-627 ger DE-627 rakwb eng Surface-active lipids in rhodococci 1998 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. Springer Online Journal Archives 1860-2002 Lang, Siegmund oth Philp, Jim C oth in Antonie van Leeuwenhoek 1934 74(1998) vom: Jan./März, Seite 59-70 (DE-627)NLEJ188983511 (DE-600)1478112-8 1572-9699 nnns volume:74 year:1998 month:01/03 pages:59-70 extent:12 http://dx.doi.org/10.1023/A:1001799711799 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 74 1998 1/3 59-70 12 |
| allfieldsGer |
(DE-627)NLEJ192935240 DE-627 ger DE-627 rakwb eng Surface-active lipids in rhodococci 1998 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. Springer Online Journal Archives 1860-2002 Lang, Siegmund oth Philp, Jim C oth in Antonie van Leeuwenhoek 1934 74(1998) vom: Jan./März, Seite 59-70 (DE-627)NLEJ188983511 (DE-600)1478112-8 1572-9699 nnns volume:74 year:1998 month:01/03 pages:59-70 extent:12 http://dx.doi.org/10.1023/A:1001799711799 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 74 1998 1/3 59-70 12 |
| allfieldsSound |
(DE-627)NLEJ192935240 DE-627 ger DE-627 rakwb eng Surface-active lipids in rhodococci 1998 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. Springer Online Journal Archives 1860-2002 Lang, Siegmund oth Philp, Jim C oth in Antonie van Leeuwenhoek 1934 74(1998) vom: Jan./März, Seite 59-70 (DE-627)NLEJ188983511 (DE-600)1478112-8 1572-9699 nnns volume:74 year:1998 month:01/03 pages:59-70 extent:12 http://dx.doi.org/10.1023/A:1001799711799 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 74 1998 1/3 59-70 12 |
| language |
English |
| source |
in Antonie van Leeuwenhoek 74(1998) vom: Jan./März, Seite 59-70 volume:74 year:1998 month:01/03 pages:59-70 extent:12 |
| sourceStr |
in Antonie van Leeuwenhoek 74(1998) vom: Jan./März, Seite 59-70 volume:74 year:1998 month:01/03 pages:59-70 extent:12 |
| format_phy_str_mv |
Article |
| institution |
findex.gbv.de |
| isfreeaccess_bool |
false |
| container_title |
Antonie van Leeuwenhoek |
| authorswithroles_txt_mv |
Lang, Siegmund @@oth@@ Philp, Jim C @@oth@@ |
| publishDateDaySort_date |
1998-01-01T00:00:00Z |
| hierarchy_top_id |
NLEJ188983511 |
| id |
NLEJ192935240 |
| language_de |
englisch |
| fullrecord |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ192935240</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707200817.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070526s1998 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ192935240</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Surface-active lipids in rhodococci</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1998</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">12</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Springer Online Journal Archives 1860-2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lang, Siegmund</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Philp, Jim C</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Antonie van Leeuwenhoek</subfield><subfield code="d">1934</subfield><subfield code="g">74(1998) vom: Jan./März, Seite 59-70</subfield><subfield code="w">(DE-627)NLEJ188983511</subfield><subfield code="w">(DE-600)1478112-8</subfield><subfield code="x">1572-9699</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:74</subfield><subfield code="g">year:1998</subfield><subfield code="g">month:01/03</subfield><subfield code="g">pages:59-70</subfield><subfield code="g">extent:12</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1023/A:1001799711799</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SOJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">74</subfield><subfield code="j">1998</subfield><subfield code="c">1/3</subfield><subfield code="h">59-70</subfield><subfield code="g">12</subfield></datafield></record></collection>
|
| series2 |
Springer Online Journal Archives 1860-2002 |
| ppnlink_with_tag_str_mv |
@@773@@(DE-627)NLEJ188983511 |
| format |
electronic Article |
| delete_txt_mv |
keep |
| collection |
NL |
| remote_str |
true |
| illustrated |
Not Illustrated |
| issn |
1572-9699 |
| topic_title |
Surface-active lipids in rhodococci |
| format_facet |
Elektronische Aufsätze Aufsätze Elektronische Ressource |
| format_main_str_mv |
Text Zeitschrift/Artikel |
| carriertype_str_mv |
zu |
| author2_variant |
s l sl j c p jc jcp |
| hierarchy_parent_title |
Antonie van Leeuwenhoek |
| hierarchy_parent_id |
NLEJ188983511 |
| hierarchy_top_title |
Antonie van Leeuwenhoek |
| isfreeaccess_txt |
false |
| familylinks_str_mv |
(DE-627)NLEJ188983511 (DE-600)1478112-8 |
| title |
Surface-active lipids in rhodococci |
| spellingShingle |
Surface-active lipids in rhodococci |
| ctrlnum |
(DE-627)NLEJ192935240 |
| title_full |
Surface-active lipids in rhodococci |
| journal |
Antonie van Leeuwenhoek |
| journalStr |
Antonie van Leeuwenhoek |
| lang_code |
eng |
| isOA_bool |
false |
| recordtype |
marc |
| publishDateSort |
1998 |
| contenttype_str_mv |
zzz |
| container_start_page |
59 |
| container_volume |
74 |
| physical |
12 |
| format_se |
Elektronische Aufsätze |
| title_sort |
surface-active lipids in rhodococci |
| title_auth |
Surface-active lipids in rhodococci |
| abstract |
Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. |
| abstractGer |
Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. |
| abstract_unstemmed |
Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed. |
| collection_details |
GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE |
| title_short |
Surface-active lipids in rhodococci |
| url |
http://dx.doi.org/10.1023/A:1001799711799 |
| remote_bool |
true |
| author2 |
Lang, Siegmund Philp, Jim C |
| author2Str |
Lang, Siegmund Philp, Jim C |
| ppnlink |
NLEJ188983511 |
| mediatype_str_mv |
z |
| isOA_txt |
false |
| hochschulschrift_bool |
false |
| author2_role |
oth oth |
| up_date |
2024-07-06T09:36:18.551Z |
| _version_ |
1803821859264790528 |
| fullrecord_marcxml |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ192935240</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707200817.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070526s1998 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ192935240</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Surface-active lipids in rhodococci</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1998</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">12</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Like other hydrocarbon-oxidising bacteria, rhodococci respond to the presence of alkanes by producing biosurfactant molecules to improve their ability to utilise these hydrophobic compounds as growth substrates. In the rhodococci these surfactants are predominantly glycolipids, the majority of which remain cell-bound during unrestricted growth. Most work has been done on the trehalose mycolates formed by Rhodococcus erythropolis, but nitrogen- limited conditions lead to the production of anionic trehalose tetraesters also. As surfactants, these compounds, whether purified or in crude form, are able to reduce the surface tension of water from 72 mN m-1 to a low of 26, thus making them among the most potent biosurfactants known. They are also able to reduce the interfacial tension between water and a hydrophobic phase (e.g. n- hexadecane) from 43 mN m-1 to values less than one (Table 1). Biosurfactants have about a ten- to 40-fold lower critical micelle concentration than synthetic surfactants. Such properties suggest a range of industrial applications, where a variety of surface-active characteristics are appropriate. Interest in biosurfactants as industrial chemicals results from the toxicity of many petrochemical-derived surfactants. Currently world-wide surfactant production is on a very large scale, and the demand for them is increasing. However, the drive towards less environmentally damaging chemicals makes biosurfactants attractive as they have lower toxicity. The reason they have not achieved a significant market share is the cost of production, which is considerably higher than for synthetic surfactants. This problem is being addressed using several strategies. An approach where there is great scope for improvement with the rhodococci is an understanding of the genetic basis of glycolipid production, which is largely unknown. They may find applications in the near future in the environmental remediation industries, where the requirement for purified molecules is of less importance. This review summarises knowledge of the chemistry, biochemistry and production of Rhodococcus surface-active lipids. Where they have been used, or there is potential for use, in industrial applications is discussed.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Springer Online Journal Archives 1860-2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lang, Siegmund</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Philp, Jim C</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Antonie van Leeuwenhoek</subfield><subfield code="d">1934</subfield><subfield code="g">74(1998) vom: Jan./März, Seite 59-70</subfield><subfield code="w">(DE-627)NLEJ188983511</subfield><subfield code="w">(DE-600)1478112-8</subfield><subfield code="x">1572-9699</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:74</subfield><subfield code="g">year:1998</subfield><subfield code="g">month:01/03</subfield><subfield code="g">pages:59-70</subfield><subfield code="g">extent:12</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1023/A:1001799711799</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SOJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">74</subfield><subfield code="j">1998</subfield><subfield code="c">1/3</subfield><subfield code="h">59-70</subfield><subfield code="g">12</subfield></datafield></record></collection>
|
| score |
7.400568 |