High-pressure Pulsed Electric Field Assisted Aqueous Enzymatic Extraction of Non-extractable Polyphenols from <i>Eucommia ulmoides</i> Leaves

WU Hong-yan; PENG Cheng-jun; DENG Hou-qin

doi:10.13386/j.issn1002-0306.2020.06.028

WU Hong-yan, PENG Cheng-jun, DENG Hou-qin. High-pressure Pulsed Electric Field Assisted Aqueous Enzymatic Extraction of Non-extractable Polyphenols from Eucommia ulmoides Leaves[J]. Science and Technology of Food Industry, 2020, 41(6): 167-171. DOI: 10.13386/j.issn1002-0306.2020.06.028

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High-pressure Pulsed Electric Field Assisted Aqueous Enzymatic Extraction of Non-extractable Polyphenols from Eucommia ulmoides Leaves

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In order to optimize the non-extractable polyphenols(NEPP)extraction process in Eucommia ulmoides leaves,three factors including enzyme dosage,field strength and pulse number were selected. On the basis of single factor experiments,the extraction process was optimized by three-factor and three-level response surface method,and the best extraction was obtained. The process was as follows:Enzyme dosage 18 mg,field strength 2.81 kV/cm,pulse number 100 times,predicted value 34.969 mg/g. The test was carried out under these conditions,and the contents of non-extractable polyphenol was(34.961±0.952) mg/g.

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High-pressure Pulsed Electric Field Assisted Aqueous Enzymatic Extraction of Non-extractable Polyphenols from Eucommia ulmoides Leaves

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