Data/hora: 06/06/2024 02:11:36

Provedor de dados: | 19
País: | Japan
Título: | Enzymatic Hydrolysis and Ethanol Fermentation of By-Products from Potato Processing Plants
Autores: | YAMADA, Sunao; SHINOMIYA, Noriyuki; OHBA, Kiyoshi; SEKIKAWA, Mitsuo; ODA, Yuji; 関川, 三男; 小田, 有二.
Data: | 2009
Ano: | 2009
Palavras-chave: | Potato peel; Substandard mash; Ethanol; Fermentation.
Resumo: | By-products from potato processing plants were liquefied and partially saccharified using three commercially available enzymes, followed by ethanol fermentation by yeast and then hydrolysis by glucoamylase. From 12% (w/w) of fresh potato peel, about 20 mg/mL ethanol was formed in the supernatant via amylase, pectinase, or an enzyme complex; this yield was slightly increased with combinations of these enzymes. Supplementation of substandard mash to potato peel (1:1) as a raw material enhanced the amount of ethanol formation, increasing it to approximately 50 mg/mL by the mixture of all three enzymes. After the addition of yeast and glucoamylase to the partially saccharified material, ethanol formation proceeded gradually and slowed in 12 h with the consumption of fermentable sugars. Galacturonic acid derived from pectin was not fermented and remained in the fermented broth. In the by-products, the conversion rate of sugars to ethanol was estimated to be 42.5%.
Idioma: | Inglês
Identificador: | http://ir.obihiro.ac.jp/dspace/handle/10322/2962
Editor: | 日本食品科学工学会
Formato: | application/pdf
Fonte: | 日本食品科学工学会