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Citation: LI Wen-Zhe, SONG Ji-Rong, ZHANG Xiao-Li. Enzymatic Preparation of Citric Acid from Apple Pomace[J]. Chinese Journal of Applied Chemistry, ;2000, 17(5): 547-549. shu

Enzymatic Preparation of Citric Acid from Apple Pomace

1.
Department of Chemical Engineering, Northwest University, Xi'an 710069

Received Date: 11 November 1999
Available Online: 18 July 2000
Fund Project: 陕西省科技攻关重点项目(2000K12-G9) (2000K12-G9)陕西省教委重点科研计划项目(99JK05) (99JK05)

The waste apple pomace was treated by cellulase to produce glucose. The results show that the optimum operating conditions are:at 50℃, pH=5, keep the concentration of cellulase to 20 μg/g medium, react time to 12 h and do not treat the apple pomace with alkali. In the range of the reacting time we adopted, the influence of the cellulose concentration can be ignored. The producing technique of the citric acid and the determine method of the citric acid also been studied by experiments.
- citric acid,
- enzymatic preparation,
- apple pomace
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