TY  - JOUR
T1  - Mathematical Differentiation to Reveal the Fermentative Characteristics of <I>Lactobacillus helveticus </I>ATCC 15009
AU - , Chiung-Chi Peng AU - , Ming-Hua Yang AU - , Chao-Ming Chuang AU - , Chiu-Lan Hsieh AU - , Hui-Er Wang AU - , Chun-Hung Chiu AU - , Charng-Cherng Chyau AU - , Kuan-Chou Chen AU - , Robert Y. Peng 
JO  - Research Journal of Biological Sciences
VL  - 3
IS  - 7
SP  - 697
EP  - 703
PY  - 2008
DA  - 2001/08/19
SN  - 1815-8846
DO  - rjbsci.2008.697.703
UR  - https://makhillpublications.co/view-article.php?doi=rjbsci.2008.697.703
KW  - Lactobacillus helveticus ATCC15009
KW  -lactic fermentation model
KW  -noncompetitive feed back inhibition
AB  - Fermentative characteristics of <I>Lactobacillus helveticus </I>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 <I>L. helveticus </I>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.
ER  -