Effects of Ultrasound Treatment on Extraction of Pomegranate Peel Polyphenols

被引：1

作者：

Deng Y. ^{[1
]}

Liu D. ^{[1
,2
,3
]}

机构：

[1] School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou

[2] Institute of Agricultural Products Processing, Ningbo Academy of Agricultural Sciences, Ningbo

[3] Fuli Institute of Food Science, Zhejiang University, Hangzhou

来源：

Journal of Food Science and Technology (China) | 2021年 / 39卷 / 01期

关键词：

HPLC; Polyphenols; Pomegranate peel; Surface morphology; Ultrasound-assisted extraction;

D O I：

10.12301/j.issn.2095-6002.2021.01.007

中图分类号：

学科分类号：

摘要：

Pomegranate peel is an easily available and inexpensive industrial by-product which is rich in polyphenols. In this study, ultrasound-assisted extraction method was used to extract polyphenols from pomegranate peel. The technological parameters were optimized and the composition and content of polyphenols from pomegranate peel were determined by high-performance liquid chromatography (HPLC). The changes of pomegranate peel surface after ultrasonic treatment were also studied. The results showed that with ultrasonic assistant conditions, water as a solvent, had a higher yield of polyphenols, which was better than other organic solvents such as methanol. Therefore, water was used as a solvent for subsequent research. In the optimal conditions of liquid-solid ratio (mL:g) 60:1, ultrasonic power 400 W and ultrasonic time 25 min, the optimal yield of polyphenols was 39.30 mg/g (using gallic acid as the standard), which was higher than that of conventional solvent extraction method (32.58 mg/g). HPLC analysis showed that the content of punicalagin in pomegranate peel polyphenols was highest, followed by punicalin. Ultrasonic treatment could greatly enhance the extraction effect. The microscopic observation on the surface of pomegranate peel showed that ultrasound could significantly destroy the surface of pomegranate peel and affect the integrity of plant tissue, thus releasing more polyphenols. © 2021, Editorial Department of Journal of Food Science and Technology. All right reserved.

引用

页码：65 / 69and77

页数：6912

共 16 条

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