Abstract
On the basis of single factor experiment, the concentration of polyethylene glycol, liquid/solid ratio, ultrasonic power and extraction time were optimized by Box-Behnken response surface analysis. Result: The results showed that the optimal extraction conditions were concentration of polyethylene glycol 68%, liquid/solid ratio 46∶1 (mL/g), ultrasonic power 157 W and extraction time 67 min. Under these conditions, the yield of polyphenols from perilla leaves reached 18.38 mg GAE/g·DW, while the predicted value was 18.21 mg GAE/g·DW, and the accuracy of the model reached 99.08%. Polyphenols from perilla leaves exhibited good antioxidant activity in a concentration-dependent manner. The IC50 of polyphenols to hydroxyl radical (·OH), superoxide anion radical (O ·), 1,1-diphenyl-2-trinitrophenylhydrazine radical (DPPH·) and reducing power were 60.21, 73.44, 70.81 and 37.52 μg/mL, respectively. However, the antioxidant activity of polyphenols extracted from perilla leaves was weaker than that of ascorbic acid (VC).
Publication Date
2-18-2023
First Page
136
Last Page
142
DOI
10.13652/j.issn.1003-5788.2020.10.027
Recommended Citation
RU, Qiao-mei; REN, Guo-ping; and HU, Qiong
(2023)
"Optimization of ultrasonic-assisted extraction for polyphenols from perilla leaves by polyethylene glycol and its antioxidant activity,"
Food and Machinery: Vol. 36:
Iss.
10, Article 27.
DOI: 10.13652/j.issn.1003-5788.2020.10.027
Available at:
https://www.ifoodmm.cn/journal/vol36/iss10/27
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