| Autor: |
CHEN Xiao-chen, DU Xi-ping, ZHOU Li-juan, WU Ling, LI Zhi-peng, YANG Yuan-fan |
| Jazyk: |
English<br />Chinese |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Shipin yu jixie, Vol 39, Iss 2, Pp 140-146 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1003-5788 |
| DOI: |
10.13652/j.spjx.1003.5788.2022.80537 |
| Popis: |
Objective: This study aimed to optimize the extraction process of Porphyra haitanensis polyphenols to develop natural hypoglycemic foods. Methods: The Box-Behnken response surface method was used to optimize the extraction process of P. haitanensis polyphenols. The α-glucosidase inhibition activity was applied to evaluate the hypoglycemic activity of P. haitanensis polyphenols at different harvest periods, and the antioxidant activities of them were evaluated based on DPPH, ABTS+ radical scavenging rate and ORAC value. Results: The optimal extraction process conditions were liquid-solid ratio (Vethanol∶mP. haitanensis) 51∶1, ethanol concentration 56% and ultrasonication time 51 min. Under the control of these conditions, the extracted content of polyphenols was 5.027 mg/g. The inhibition of α-glucosidase activity by P. haitanensis polyphenols was in a concentration-dependent manner, and the inhibition by the fourth-harvest-period polyphenols was significantly higher than other harvest periods polyphenols. P. haitanensis polyphenols at different harvest periods showed antioxidant activity, and the antioxidant activity of the fourth-harvest-period polyphenols was strongest. Conclusion: The high polyphenol contents, strong inhibition of α-glucosidase activity and strong antioxidant capacity of the fourth-harvest-period makes it an excellent food source for developing natural hypoglycemic foods and antioxidants. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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