Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin

Extracts of Saccharomyces cerevisiae (Sc) yeast were generated using a biotechnological solid-state fermentation method. The organic material used for fermentation consisted of a variety of fibrous substrates of agricultural origin, and their effect on the chemical composition and productivity of ce...

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Autores principales:	Velásquez,Alejandro, Arias,Rodrigo, Toneatti,Marcelo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2012
Materias:	protein concentrate Saccharomyces cerevisiae vegetable substrate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300003
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spelling	oai:scielo:S0718-162020120003000032014-03-10Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast originVelásquez,AlejandroArias,RodrigoToneatti,Marcelo protein concentrate Saccharomyces cerevisiae vegetable substrate Extracts of Saccharomyces cerevisiae (Sc) yeast were generated using a biotechnological solid-state fermentation method. The organic material used for fermentation consisted of a variety of fibrous substrates of agricultural origin, and their effect on the chemical composition and productivity of cellular biomass generated was evaluated. The substrates studied included the following: wheat straw, WS; barley straw, BS; chili stubble, CS; oat hull, OH and starch powder, SP (control). For incubation with Sc, 2 g of (dry) vegetable substrate were added to 12 mL of cultivation medium. The fermentation time was seven days under aerobic conditions (pH 5, 26°C). After extraction of the yeast biomass, its chemical composition and productivity were analyzed. The results showed an effect (P≤0.01) of the type of vegetable substrate fermented on the crude protein (CP) and true protein (TP) contents of the yeast biomass. The highest concentration of CP was obtained by fermentation of the control TSP (treatment with the starch powder substrate ) (506.3 g kg¹ DM), followed by the treatment TOH (474.5 g kg-1 DM). The productivity of the yeast biomass was affected by the type of substrate fermented (P≤0.001). The highest value was obtained with TSP (327.10 mg g-1), followed by TOH (treatment with the oat hull substrate) (207.08 mg g-1). The lowest efficiency was measured in TCS (156.30 mg g-1). On the basis of these results, it may be inferred that an extract of high CP can be obtained from yeast (Sc) by the fermentation of fibrous substrates.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.39 n.3 20122012-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300003en10.4067/S0718-16202012000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	protein concentrate Saccharomyces cerevisiae vegetable substrate
spellingShingle	protein concentrate Saccharomyces cerevisiae vegetable substrate Velásquez,Alejandro Arias,Rodrigo Toneatti,Marcelo Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
description	Extracts of Saccharomyces cerevisiae (Sc) yeast were generated using a biotechnological solid-state fermentation method. The organic material used for fermentation consisted of a variety of fibrous substrates of agricultural origin, and their effect on the chemical composition and productivity of cellular biomass generated was evaluated. The substrates studied included the following: wheat straw, WS; barley straw, BS; chili stubble, CS; oat hull, OH and starch powder, SP (control). For incubation with Sc, 2 g of (dry) vegetable substrate were added to 12 mL of cultivation medium. The fermentation time was seven days under aerobic conditions (pH 5, 26°C). After extraction of the yeast biomass, its chemical composition and productivity were analyzed. The results showed an effect (P≤0.01) of the type of vegetable substrate fermented on the crude protein (CP) and true protein (TP) contents of the yeast biomass. The highest concentration of CP was obtained by fermentation of the control TSP (treatment with the starch powder substrate ) (506.3 g kg¹ DM), followed by the treatment TOH (474.5 g kg-1 DM). The productivity of the yeast biomass was affected by the type of substrate fermented (P≤0.001). The highest value was obtained with TSP (327.10 mg g-1), followed by TOH (treatment with the oat hull substrate) (207.08 mg g-1). The lowest efficiency was measured in TCS (156.30 mg g-1). On the basis of these results, it may be inferred that an extract of high CP can be obtained from yeast (Sc) by the fermentation of fibrous substrates.
author	Velásquez,Alejandro Arias,Rodrigo Toneatti,Marcelo
author_facet	Velásquez,Alejandro Arias,Rodrigo Toneatti,Marcelo
author_sort	Velásquez,Alejandro
title	Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
title_short	Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
title_full	Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
title_fullStr	Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
title_full_unstemmed	Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
title_sort	effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300003
work_keys_str_mv	AT velasquezalejandro effectofthetypeofsubstrateonthechemicalcompositionandproductivityofaproteinconcentrateofyeastorigin AT ariasrodrigo effectofthetypeofsubstrateonthechemicalcompositionandproductivityofaproteinconcentrateofyeastorigin AT toneattimarcelo effectofthetypeofsubstrateonthechemicalcompositionandproductivityofaproteinconcentrateofyeastorigin
_version_	1714202142018895872

Effect of the type of substrate on the chemical composition and productivity of a protein concentrate of yeast origin

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