Optimization of the extraction for total dietary fiber from leaves of Toona Sinensis by response surface method and its antioxidant activity

LIU Jing; LI Xiang-li; ZHANG Yan; HU Yan-ying; ZHU Jiu-bin

doi:10.13386/j.issn1002-0306.2014.05.091

LIU Jing, LI Xiang-li, ZHANG Yan, HU Yan-ying, ZHU Jiu-bin. Optimization of the extraction for total dietary fiber from leaves of Toona Sinensis by response surface method and its antioxidant activity[J]. Science and Technology of Food Industry, 2014, (05): 182-187. DOI: 10.13386/j.issn1002-0306.2014.05.091

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Optimization of the extraction for total dietary fiber from leaves of Toona Sinensis by response surface method and its antioxidant activity

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Optimization of the technology for extracting total dietary fiber from leaves of Toona sinensis with neutral protease by response surface method and its antioxidant activities were studied in this paper.The results showed that the optimum conditions were pH5.8, enzymolysis temperature 61℃, time 50min and enzyme concentration0.2%.Under these conditions, the yield of total dietary fiber was 72.45%. The total dietary fiber of Toona sinensis leaves had a good scavenging capacity against DPPH radicals with IC50values 3.26mg /mL. The highest scavenging against O-2·and·OH were 35.13% and 27.38% respectively in the range of 2¹0 mg /mL.

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Science and Technology of Food Industry

Optimization of the extraction for total dietary fiber from leaves of Toona Sinensis by response surface method and its antioxidant activity

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