Synergistic effects of superfine grinding and high hydrostatic pressure on the contents, distribution, digestive behaviors and antioxidant activities of polyphenols in barley leaves

Huijuan Zhu; Jiahao Li; Xin Yuan; Jiajia Zhao; Lingjun Ma; Fang Chen; Xiaosong Hu; Junfu Ji

doi:10.1016/j.foodchem.2024.139574

Synergistic effects of superfine grinding and high hydrostatic pressure on the contents, distribution, digestive behaviors and antioxidant activities of polyphenols in barley leaves

Food Chem. 2024 May 8:452:139574. doi: 10.1016/j.foodchem.2024.139574. Online ahead of print.

Authors

Huijuan Zhu¹, Jiahao Li¹, Xin Yuan¹, Jiajia Zhao¹, Lingjun Ma¹, Fang Chen¹, Xiaosong Hu¹, Junfu Ji²

Affiliations

¹ College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, China Agricultural University, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing 100083, China.
² College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruit and Vegetable Processing, China Agricultural University, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing 100083, China. Electronic address: junfu.ji@cau.edu.cn.

PMID: 38733683
DOI: 10.1016/j.foodchem.2024.139574

Abstract

Barley leaves (BLs) naturally contained abundant phenolics, most of which are hardly completely released from food matrix during gastrointestinal digestion. Superfine grinding (SFG) and high hydrostatic pressure (HHP) are generally used to treat the functional plants due to their effectiveness to cell wall-breaking and improvement of nutraceutical bioavailability. Thus, this study investigated the synergistic effects of SFG and HHP (100, 300, 500 MPa/20 min) on the bioaccessbility of typical phenolics in BLs during the simulated in-vitro digestion. The results demonstrated that the highest bioaccessbility (40.98%) was found in the ultrafine sample with HHP at 500 MPa. CLSM and SEM confirmed SFG led to microstructurally rapture of BLs. Moreover, the recovery index of ABTS radical scavenging activity and FRAP of HHP-treated ultrafine and fine BLs samples maximumly increased by 53.62% and 9.61%, respectively. This study is expecting to provide the theoretical basis to improve the consumer acceptance of BLs.

Keywords: Barley leaves; High hydrostatic pressure; Insoluble bound polyphenols; Soluble polyphenols; Superfine grinding.