Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract
Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microenc...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Pauck, Claire [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017transfer abstract |
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| Schlagwörter: |
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| Umfang: |
9 |
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| Übergeordnetes Werk: |
Enthalten in: Assessment of urban identity through a matrix of cultural landscapes - Ziyaee, Maryam ELSEVIER, 2017, an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST), Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:75 ; year:2017 ; pages:631-639 ; extent:9 |
| Links: |
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| DOI / URN: |
10.1016/j.lwt.2016.10.018 |
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ELV020580282 |
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| 520 | |a Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. | ||
| 520 | |a Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. | ||
| 650 | 7 | |a Stability |2 Elsevier | |
| 650 | 7 | |a Thermal analysis |2 Elsevier | |
| 650 | 7 | |a Phenolic compounds |2 Elsevier | |
| 650 | 7 | |a Physicochemical properties |2 Elsevier | |
| 700 | 1 | |a de Beer, Dalene |4 oth | |
| 700 | 1 | |a Aucamp, Marique |4 oth | |
| 700 | 1 | |a Liebenberg, Wilna |4 oth | |
| 700 | 1 | |a Stieger, Nicole |4 oth | |
| 700 | 1 | |a Human, Chantelle |4 oth | |
| 700 | 1 | |a Joubert, Elizabeth |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Ziyaee, Maryam ELSEVIER |t Assessment of urban identity through a matrix of cultural landscapes |d 2017 |d an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST) |g Amsterdam [u.a.] |w (DE-627)ELV004078675 |
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10.1016/j.lwt.2016.10.018 doi GBVA2017021000010.pica (DE-627)ELV020580282 (ELSEVIER)S0023-6438(16)30613-2 DE-627 ger DE-627 rakwb eng 660 660 DE-600 690 VZ 74.12 bkl 74.72 bkl Pauck, Claire verfasserin aut Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Stability Elsevier Thermal analysis Elsevier Phenolic compounds Elsevier Physicochemical properties Elsevier de Beer, Dalene oth Aucamp, Marique oth Liebenberg, Wilna oth Stieger, Nicole oth Human, Chantelle oth Joubert, Elizabeth oth Enthalten in Elsevier Ziyaee, Maryam ELSEVIER Assessment of urban identity through a matrix of cultural landscapes 2017 an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST) Amsterdam [u.a.] (DE-627)ELV004078675 volume:75 year:2017 pages:631-639 extent:9 https://doi.org/10.1016/j.lwt.2016.10.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 74.12 Stadtgeographie Siedlungsgeographie VZ 74.72 Stadtplanung kommunale Planung VZ AR 75 2017 631-639 9 045F 660 |
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10.1016/j.lwt.2016.10.018 doi GBVA2017021000010.pica (DE-627)ELV020580282 (ELSEVIER)S0023-6438(16)30613-2 DE-627 ger DE-627 rakwb eng 660 660 DE-600 690 VZ 74.12 bkl 74.72 bkl Pauck, Claire verfasserin aut Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Stability Elsevier Thermal analysis Elsevier Phenolic compounds Elsevier Physicochemical properties Elsevier de Beer, Dalene oth Aucamp, Marique oth Liebenberg, Wilna oth Stieger, Nicole oth Human, Chantelle oth Joubert, Elizabeth oth Enthalten in Elsevier Ziyaee, Maryam ELSEVIER Assessment of urban identity through a matrix of cultural landscapes 2017 an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST) Amsterdam [u.a.] (DE-627)ELV004078675 volume:75 year:2017 pages:631-639 extent:9 https://doi.org/10.1016/j.lwt.2016.10.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 74.12 Stadtgeographie Siedlungsgeographie VZ 74.72 Stadtplanung kommunale Planung VZ AR 75 2017 631-639 9 045F 660 |
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10.1016/j.lwt.2016.10.018 doi GBVA2017021000010.pica (DE-627)ELV020580282 (ELSEVIER)S0023-6438(16)30613-2 DE-627 ger DE-627 rakwb eng 660 660 DE-600 690 VZ 74.12 bkl 74.72 bkl Pauck, Claire verfasserin aut Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Stability Elsevier Thermal analysis Elsevier Phenolic compounds Elsevier Physicochemical properties Elsevier de Beer, Dalene oth Aucamp, Marique oth Liebenberg, Wilna oth Stieger, Nicole oth Human, Chantelle oth Joubert, Elizabeth oth Enthalten in Elsevier Ziyaee, Maryam ELSEVIER Assessment of urban identity through a matrix of cultural landscapes 2017 an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST) Amsterdam [u.a.] (DE-627)ELV004078675 volume:75 year:2017 pages:631-639 extent:9 https://doi.org/10.1016/j.lwt.2016.10.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 74.12 Stadtgeographie Siedlungsgeographie VZ 74.72 Stadtplanung kommunale Planung VZ AR 75 2017 631-639 9 045F 660 |
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10.1016/j.lwt.2016.10.018 doi GBVA2017021000010.pica (DE-627)ELV020580282 (ELSEVIER)S0023-6438(16)30613-2 DE-627 ger DE-627 rakwb eng 660 660 DE-600 690 VZ 74.12 bkl 74.72 bkl Pauck, Claire verfasserin aut Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Stability Elsevier Thermal analysis Elsevier Phenolic compounds Elsevier Physicochemical properties Elsevier de Beer, Dalene oth Aucamp, Marique oth Liebenberg, Wilna oth Stieger, Nicole oth Human, Chantelle oth Joubert, Elizabeth oth Enthalten in Elsevier Ziyaee, Maryam ELSEVIER Assessment of urban identity through a matrix of cultural landscapes 2017 an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST) Amsterdam [u.a.] (DE-627)ELV004078675 volume:75 year:2017 pages:631-639 extent:9 https://doi.org/10.1016/j.lwt.2016.10.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 74.12 Stadtgeographie Siedlungsgeographie VZ 74.72 Stadtplanung kommunale Planung VZ AR 75 2017 631-639 9 045F 660 |
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10.1016/j.lwt.2016.10.018 doi GBVA2017021000010.pica (DE-627)ELV020580282 (ELSEVIER)S0023-6438(16)30613-2 DE-627 ger DE-627 rakwb eng 660 660 DE-600 690 VZ 74.12 bkl 74.72 bkl Pauck, Claire verfasserin aut Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. Stability Elsevier Thermal analysis Elsevier Phenolic compounds Elsevier Physicochemical properties Elsevier de Beer, Dalene oth Aucamp, Marique oth Liebenberg, Wilna oth Stieger, Nicole oth Human, Chantelle oth Joubert, Elizabeth oth Enthalten in Elsevier Ziyaee, Maryam ELSEVIER Assessment of urban identity through a matrix of cultural landscapes 2017 an official journal of the Swiss Society of Food Science and Technology (SGLWT/SOSSTA) and the International Union of Food Science and Technology (IUFoST) Amsterdam [u.a.] (DE-627)ELV004078675 volume:75 year:2017 pages:631-639 extent:9 https://doi.org/10.1016/j.lwt.2016.10.018 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 74.12 Stadtgeographie Siedlungsgeographie VZ 74.72 Stadtplanung kommunale Planung VZ AR 75 2017 631-639 9 045F 660 |
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inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green cyclopia subternata (honeybush) extract |
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Inulin suitable as reduced-kilojoule carrier for production of microencapsulated spray-dried green Cyclopia subternata (honeybush) extract |
| abstract |
Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. |
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Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. |
| abstract_unstemmed |
Retention of phenolic compounds during spray-drying of an anti-diabetic C. subternata extract and physicochemical characteristics of spray-dried powders (pure extract and extract-carrier mixtures) were evaluated. Extract-carrier mixtures contained three levels (250, 500 and 750 g/kg) of the microencapsulating agents, namely corn syrup solids, commonly used by the food industry, and inulin, a low-kilojoule alternative. The amorphous spray-dried powders ranged from nearly free-flowing to cohesive. Their moisture content and water activity fell within the range of their monolayer moisture values. The moisture sorption isotherm of the pure extract showed very little hysteresis, contrary to the mixtures containing carriers. Similar values for calculated and experimental heat flow, determined by isothermal microcalorimetry, indicated the carriers to be compatible with the extract, except when used in a mixture containing 750 g/kg corn syrup solids per total solids. Spray-drying had no detrimental effect on the individual phenolic content, in particular the heat labile mangiferin, isomangiferin and 3-β-d-glucopyranosyliriflophenone, and the total antioxidant capacity of the extract. Microencapsulation of C. subternata extract with inulin by spray-drying thus provides a stable low-kilojoule powder, suitable for formulation of single-serve beverage mixtures that can be used by diabetics. |
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