Lactic acid production from acidogenic fermentation of fruit and vegetable wastes

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논문

Lactic acid production from acidogenic fermentation of fruit and vegetable wastes

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Wu, Y.; Ma, H.; Zheng, M.; Wang, K.

초록

This work focused on the lactic acid production from acidogenic fermentation of fruit and vegetable wastes treatment. A long term completely stirred tank reactor (CSTR) lasting for 50days was operated at organic loading rate (OLR) of 11gVS/(Ld) and sludge retention time (SRT) of 3days with pH controlled at 4.0 (1-24day) and 5.0 (25-50day). The results indicated that high amount of approximately 10-20g/L lactic acid was produced at pH of 4.0 and the fermentation type converted from coexistence of homofermentation and heterofermentation into heterofermentation. At pH of 5.0, the hydrolysis reaction was improved and the total concentration of fermentation products increased up to 29.5gCOD/L. The heterofermentation was maintained, however, bifidus pathway by Bifidobacterium played an important role.

발행연도

2015

발행기관

Elsevier Applied Science

ISSN

0960-8524

권

191

페이지

pp.53-58

DOI

10.1016/j.biortech.2015.04.100