Production of lactic acid and fungal biomass by Rhizopus fungi from food processing waste streams

被引:46
作者
Jin, B
Yin, PH
Ma, YH
Zhao, L
机构
[1] Univ S Australia, SA Water Ctr Sci & Syst, Mawson Lakes, SA 5095, Australia
[2] Australian Water Qual Ctr, Bolivar, SA 5110, Australia
[3] Jinan Univ, Dept Chem, Guangzhou 510632, Peoples R China
[4] Huizhou Univ, Dept Chem, Huizhou 510632, Guangdong, Peoples R China
关键词
lactic acid; fungal biomass; simultaneous saccharification and fermentation; Rhizopus arrhizus; Rhizopus oryzae; corn; potato and wheat starch and pineapple wastes; SIMULTANEOUS SACCHARIFICATION; L(+)-LACTIC ACID; ORYZAE; FERMENTATION; STARCH; ARRHIZUS; KINETICS; GLUCOSE; WATER; PULP;
D O I
10.1007/s10295-005-0045-4
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
This study proposed a novel waste utilization bioprocess for production of lactic acid and fungal biomass from waste streams by fungal species of Rhizopus arrhizus 36017 and R. oryzae 2062. The lactic acid and fungal biomass were produced in a single-stage simultaneous saccharification and fermentation process using potato, corn, wheat and pineapple waste streams as production media. R. arrhizus 36017 gave a high lactic acid yield up to 0.94-0.97 g/g of starch or sugars associated with 4-5 g/1 of fungal biomass produced, while 17-19 g/1 fungal biomass with a lactic acid yield of 0.65-0.76 g/g was produced by the R. oryzae 2062 in 36-48 h fermentation. Supplementation of 2 g/1 of ammonium sulfate, yeast extract and peptone stimulated an increase in 8-15% lactic acid yield and 10-20% fungal biomass.
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页码:678 / 686
页数:9
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