Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos
Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This...
Ausführliche Beschreibung
Autor*in: |
Juan Carmona [verfasserIn] Alfredo Usubillaga [verfasserIn] Luis Rojas [verfasserIn] Patricia Quintero [verfasserIn] Gina Meccia [verfasserIn] |
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E-Artikel |
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Englisch ; Spanisch |
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2010 |
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Übergeordnetes Werk: |
In: Avances en Química - Universidad de Los Andes, 2008, 5(2010), 1, Seite 45-49 |
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Übergeordnetes Werk: |
volume:5 ; year:2010 ; number:1 ; pages:45-49 |
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Katalog-ID: |
DOAJ053175298 |
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(DE-627)DOAJ053175298 (DE-599)DOAJbed7399574944650b6ea842fedf8cedf DE-627 ger DE-627 rakwb eng spa QD1-999 Juan Carmona verfasserin aut Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) Espeletiopsis angustifolia kaurenic acids Espeletiinae frailejon Gas Chromatograph-Mass Spectrometry Chemistry Alfredo Usubillaga verfasserin aut Luis Rojas verfasserin aut Patricia Quintero verfasserin aut Gina Meccia verfasserin aut In Avances en Química Universidad de Los Andes, 2008 5(2010), 1, Seite 45-49 (DE-627)559433395 (DE-600)2413555-0 18565301 nnns volume:5 year:2010 number:1 pages:45-49 https://doaj.org/article/bed7399574944650b6ea842fedf8cedf kostenfrei http://www.saber.ula.ve/bitstream/123456789/31057/1/articulo5.pdf kostenfrei https://doaj.org/toc/1856-5301 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 5 2010 1 45-49 |
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(DE-627)DOAJ053175298 (DE-599)DOAJbed7399574944650b6ea842fedf8cedf DE-627 ger DE-627 rakwb eng spa QD1-999 Juan Carmona verfasserin aut Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) Espeletiopsis angustifolia kaurenic acids Espeletiinae frailejon Gas Chromatograph-Mass Spectrometry Chemistry Alfredo Usubillaga verfasserin aut Luis Rojas verfasserin aut Patricia Quintero verfasserin aut Gina Meccia verfasserin aut In Avances en Química Universidad de Los Andes, 2008 5(2010), 1, Seite 45-49 (DE-627)559433395 (DE-600)2413555-0 18565301 nnns volume:5 year:2010 number:1 pages:45-49 https://doaj.org/article/bed7399574944650b6ea842fedf8cedf kostenfrei http://www.saber.ula.ve/bitstream/123456789/31057/1/articulo5.pdf kostenfrei https://doaj.org/toc/1856-5301 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 5 2010 1 45-49 |
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(DE-627)DOAJ053175298 (DE-599)DOAJbed7399574944650b6ea842fedf8cedf DE-627 ger DE-627 rakwb eng spa QD1-999 Juan Carmona verfasserin aut Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) Espeletiopsis angustifolia kaurenic acids Espeletiinae frailejon Gas Chromatograph-Mass Spectrometry Chemistry Alfredo Usubillaga verfasserin aut Luis Rojas verfasserin aut Patricia Quintero verfasserin aut Gina Meccia verfasserin aut In Avances en Química Universidad de Los Andes, 2008 5(2010), 1, Seite 45-49 (DE-627)559433395 (DE-600)2413555-0 18565301 nnns volume:5 year:2010 number:1 pages:45-49 https://doaj.org/article/bed7399574944650b6ea842fedf8cedf kostenfrei http://www.saber.ula.ve/bitstream/123456789/31057/1/articulo5.pdf kostenfrei https://doaj.org/toc/1856-5301 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 5 2010 1 45-49 |
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(DE-627)DOAJ053175298 (DE-599)DOAJbed7399574944650b6ea842fedf8cedf DE-627 ger DE-627 rakwb eng spa QD1-999 Juan Carmona verfasserin aut Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) Espeletiopsis angustifolia kaurenic acids Espeletiinae frailejon Gas Chromatograph-Mass Spectrometry Chemistry Alfredo Usubillaga verfasserin aut Luis Rojas verfasserin aut Patricia Quintero verfasserin aut Gina Meccia verfasserin aut In Avances en Química Universidad de Los Andes, 2008 5(2010), 1, Seite 45-49 (DE-627)559433395 (DE-600)2413555-0 18565301 nnns volume:5 year:2010 number:1 pages:45-49 https://doaj.org/article/bed7399574944650b6ea842fedf8cedf kostenfrei http://www.saber.ula.ve/bitstream/123456789/31057/1/articulo5.pdf kostenfrei https://doaj.org/toc/1856-5301 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 5 2010 1 45-49 |
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(DE-627)DOAJ053175298 (DE-599)DOAJbed7399574944650b6ea842fedf8cedf DE-627 ger DE-627 rakwb eng spa QD1-999 Juan Carmona verfasserin aut Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) Espeletiopsis angustifolia kaurenic acids Espeletiinae frailejon Gas Chromatograph-Mass Spectrometry Chemistry Alfredo Usubillaga verfasserin aut Luis Rojas verfasserin aut Patricia Quintero verfasserin aut Gina Meccia verfasserin aut In Avances en Química Universidad de Los Andes, 2008 5(2010), 1, Seite 45-49 (DE-627)559433395 (DE-600)2413555-0 18565301 nnns volume:5 year:2010 number:1 pages:45-49 https://doaj.org/article/bed7399574944650b6ea842fedf8cedf kostenfrei http://www.saber.ula.ve/bitstream/123456789/31057/1/articulo5.pdf kostenfrei https://doaj.org/toc/1856-5301 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 5 2010 1 45-49 |
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Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos |
abstract |
Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) |
abstractGer |
Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) |
abstract_unstemmed |
Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%) |
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Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos |
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Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l. The dried leaves were minced and extracted with hexane-diethyl ether (3:1). This extract was shaken with 0.5 N NaOH to separate the acid fraction which was purified by flash chromatography. An aliquote of it was methylated with diazomethane and analyzed by GC-MS which permitted to identify ent-kaurenic acid (18.6%), ent-15α-O-isovaleroxy-kaur-16-en-19-oic acid (16.2%), ent-15α-hidroxy-kaur-16-en-19-oic acid (grandiflorolic acid, 9.2%), ent-kauranic acid (4.9%), ent-kaur-9(11),16-diene-19-oic acid (grandiflorenic acid, 4.5%) and ent-15α-O-acetoxy-kaur-16-en-19-oic acid (3.4%). The neutral fraction yielded ent-kaur-16-en-19-ol (kaurenol, 32.7%) and several long-chain wax n-alkanes with predominance of odd carbon number alkanes: heptacosane (38.3%), nonacosane (21.0%) and entriacontane (4.6%)</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Espeletiopsis angustifolia</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">kaurenic acids</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Espeletiinae</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">frailejon</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Gas Chromatograph-Mass Spectrometry</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Chemistry</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Alfredo Usubillaga</subfield><subfield code="e">verfasserin</subfield><subfield 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