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Polysaccharides in Selenium-Enriched Tea: Extraction Performance under Innovative Technologies and Antioxidant Activities
| Content Provider | MDPI |
|---|---|
| Author | Gao, Weilan Zhang, Na Li, Shuyi Li, Shuyao Zhu, Shiyu Cong, Xin Cheng, Shuiyuan Barba, Francisco J. Zhu, Zhenzhou |
| Copyright Year | 2022 |
| Abstract | Pulsed electric fields (PEF) and ultrasonic-assisted extraction (UE) were applied to improve the extraction performance of selenium-enriched tea polysaccharides (Se−TPSs) in mild conditions. Two combined extraction processes were investigated: (1) PEF strength at 10 kV/cm followed by conventional extraction (CE) at 50 °C for 60 min and (2) PEF+UE (PEF strength at 10 kV/cm followed by UE at 400 W for 60 min). The optimal extraction yields, and energy consumption rates were obtained at 36.86% and 41.53% and 78.78 kJ/mg and 133.91 kJ/mg, respectively. The Se−TPSs were analyzed and characterized by GPC, UV, and FT-IR, which evidenced the structural stability of the Se−TPSs during the extraction processes. It was found that PEF and UE could reduce the particle size diameter of the Se−TPS extract, as well as the proportion of uronic acid. Moreover, PEF could increase the selenium content in the Se−TPS extract by 160.14% due to a lower extraction temperature compared to conventional extraction. The antioxidant activities of the Se−TPSs in vitro were investigated using OH, |
| Starting Page | 2545 |
| e-ISSN | 23048158 |
| DOI | 10.3390/foods11172545 |
| Journal | Foods |
| Issue Number | 17 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-23 |
| Access Restriction | Open |
| Subject Keyword | Foods Food Science and Technology Integrative and Complementary Medicine Pulsed Electric Fields Selenium-enriched Tea Selenium Polysaccharide Antioxidant Activity |
| Content Type | Text |
| Resource Type | Article |
