Authors: Wenlin Tang Min Zhang Zhongxiang Fang
Publish Date: 2014/07/02
Volume: 52, Issue: 7, Pages: 4042-4053
Abstract
Porcine placenta is commonly used in Chinese as a traditional medicine It has been reported by a number of researchers that the porcine placenta contains many compounds which have good health benefits Response surface methodology RSM was applied to optimize the parameters of ultrasound power ultrasound treat time and extraction temperature on the extraction yield of porcine placenta watersoluble proteins PPWP The results indicated that under optimum conditions of ultrasound power 257 w extraction temperature at 49 °C for 7 min the extraction yield of PPWP was 327 which was significantly higher than that of the conventional extraction method CEM of 150 The experimental data were fitted to a secondorder polynomial equation using multiple regression analysis and the estimated model showed a high capacity of predicting the dependent variables Although not significantly the antioxidant activity of PPWP from ultrasoundassistextraction UAE were higher than those from CEM indicated that UAE had a positive effect or at least no negative effect on the bioactivity of PPWP
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