Study on Strains Screening for SCP and Fermentation Conditions of Mixed-wastewater from Beer Industry

Abstract

Abstract: Trials of SCP fermentation conditions and strains screening were conducted with three strains: Candida uticis, Saccharomyces fragilis, Saccharomyces cerevisiae by using the mixed-wastewater of brewery. The results showed that for the single strain experiment, Candida uticis was the best strain for single cell protein(SCP) fermentation in mixed-wastewater of brewery. Its biomass and chemical oxygen demand(COD) reducing rate were the highest and the suitable project was obtained: strain: Candida uticis; inoculating quantity: 15% and 5%; culturing time: 72h and 48h, wastewater density: 1:3 and1:2 respectively; but for the mixed-strain’s test, the suitable project was: Candida uticis: Saccharomyces fragilis =1:1; inoculating quantity: 10% and 5%; incubating time: 72h and 24h.

Key words: SCP(single cell protein), screening strain, fermentation conditions, mixed-wastewater of beer industry

YUAN Jian-Min, ZHANG Zhong-Ming, WU Guo-Feng. Study on Strains Screening for SCP and Fermentation Conditions of Mixed-wastewater from Beer Industry[J]. FOOD SCIENCE, 2005, 26(12): 152-156.

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Study on Strains Screening for SCP and Fermentation Conditions of Mixed-wastewater from Beer Industry

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