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Title: Mathematical Differentiation to Reveal the Fermentative Characteristics of Lactobacillus helveticus ATCC 15009
Authors: Peng, Chiung-Chi;Yang, Ming-Hua;Chuang, Chao-Ming;Hsieh, Chiu-Lan;Wang, Hui-Er;Chiu, Chun-Hung;Chyau, Charng-Cherng;Chen, Kuan-Chou;Peng, Robert Y.
Contributors: 生物技術研究所
Keywords: Lactobacillus helveticus ATCC15009;Lactic fermentation model;Noncompetitive feed back inhibition
Date: 2008
Issue Date: 2012-08-07T06:57:50Z
Publisher: Medwell
Abstract: Fermentative characteristics of Lactobacillus helveticus ATCC15009 were investigated by varying size of initial inocula, the pH values of fermentation, respectively by a pH-controlled and a pH-uncontrolled processes at 38�C. The first and the second differentiation of lactic acid production (P vs. t) and growth (X vs. t) data were taken. Their maximum peaks and reflection points were solved, whence the relationship of the model was derived. Alternatively, Henderson-Hasselbalch equation was utilized to criticize the dependencies of the feed back inhibition on the total lactate cncentration and pH. Results revealed that in lactose medium lactic acid production rate (dP/dt) of L. helveticus B1075 obeys the growth ( dX/dt) associated model, dP/dt = dX/dt. Furthermore, the non-competitive end product inhibition is entirely dependent on the total lactate concentration.
Relation: Research Journal of Biological Sciences, 3(7): 697-703
Appears in Collections:[生物技術研究所] 期刊論文

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