In order to study the process and kinetics of dextranase production by Penicillium cyclopium, changes in cell density, dextranase activity and total sugar along fermentation time were measured. Logistic equation, Luedeking-piret equation and Luedeking-piret-like equation were used to arrange the experimental data to obtain kinetic models of cell growth (R2=0.994), dextranase synthesis (R2=0.992) and substrate consumption (R2=0.991), respectively. All established kinetic models had reasonable errors between calculated values and experimental values, therefore, they can reflect the fermentation process of Penicillum. cyclopium in a better way to produce dextranase, which provides a theoretical basis for controlling and predicting the fermentation process.
HUANG Ruijie
,
LAN Ping
,
ZHONG Lei
,
QIN Qin
,
LAN Lihong
,
WEI Jiaman
,
LIAO Anping
,
LI Mei
. Establishment of kinetic models for dextranase fermentation by Penicillium cyclopium[J]. Food and Fermentation Industries, 2019
, 45(14)
: 57
-62
.
DOI: 10.13995/j.cnki.11-1802/ts.019487
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