On the basis of single factor test,a response surface method was applied to optimize the extraction technology of proanthocyanidin from peanut skin.According to Box-behnken central design,the influencing factors were determined by response surface with four factors and three levels.Using the extraction rate of proanthocyanidin as response value,the respone surface and contour were graphed.The variance model analysis showed the order of the influence was:liquid-solid ratio>concentration of ethanol> time>temperature.The optimum extraction technique conditions were as follows:liquid-solid ratio 1∶21,concentration of ethanol 56%,extraction time 59min,extraction temperature 62℃.Under the optimum extraction conditions,the extraction rate of proanthcynidin was 7.94%.
Liu Zhi-qiang
,
Yang Qing-li
,
Zhang Chu-shu
,
Wang Shi-qing
,
Li Hong-xia
,
Zhang Yan
,
Yu Li-na
,
Bi Jie
,
Sun Jie
. Optimization on the Technique of Proanthocyaidin Ethanol Extraction from Peanut Skin[J]. Food and Fermentation Industries, 2010
, 36(06)
: 166
-170
.
DOI: 10.13995/j.cnki.11-1802/ts.2010.06.007
