Improved stabilization of coix seed oil in a nanocage-coating framework based on gliadin-carboxymethyl chitosan-Ca2

Wenyu Zheng; Zhan-Peng Chen; Yan-Hong Yang; Rong Yang; Tu-di Yang; Pei-Li Lai; Tong-Lin Chen; Shui-Ling Qiu; Shao-Yun Wang; Lan Liao

doi:10.1016/j.carbpol.2020.117557

Improved stabilization of coix seed oil in a nanocage-coating framework based on gliadin-carboxymethyl chitosan-Ca²

Carbohydr Polym. 2021 Apr 1:257:117557. doi: 10.1016/j.carbpol.2020.117557. Epub 2021 Jan 21.

Authors

Affiliations

¹ Department of Food Science, College of Food Science and Engeerning, Foshan University, Foshan, Guangdong, 528000, People's Republic of China.
² College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, People's Republic of China.
³ College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, People's Republic of China. Electronic address: shywang@fzu.edu.cn.
⁴ Department of Food Science, College of Food Science and Engeerning, Foshan University, Foshan, Guangdong, 528000, People's Republic of China; College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, People's Republic of China. Electronic address: felliao@fosu.edu.cn.

PMID: 33541626
DOI: 10.1016/j.carbpol.2020.117557

Abstract

Coix seed oil (CSO) is easily suffered functional-loss by oxidation and hydrothermal-treatment. The environmental stable nanocage-coating-CSO particles (OGC-Ca) by the frameworks consist of gliadins, carboxymethyl chitosan (CMCS) and Ca²⁺ were investigated. Results showed Ca²⁺ was the key controller for fabricating this nanocage-coating-frameworks, bridging macromolecule-chains with electrostatic interaction and hydrogen bonds, detected by FTIR, CD, DSC and XRD. SEM displayed new-formed velvet-like twigs after cross-linking CMCS to gliadins. Ca²⁺ assisted the nanocage-coating by significant down-sizing conversion OGC to OGC-Ca with consumption of twigs. OGC-Ca displayed a good stability towards heat (60-80 °C, 0-80 min), pH (3-8), NaCl (0-0.5 mM), storage (4/25 °C, 12 days), and a reduce of the pre-oxidation value of CSO in water and the improved controlled release of CSO in simulated GI tract. It illustrated GC-Ca frameworks would be a suitable delivery carrier for the CSO like pharmaceuticals and nutraceuticals for the food or medical use.

Keywords: Ca(2+); Carboxymethyl chitosan; Coix seed oil; Gliadin; Nanocage-coating frameworks; Nanoparticles.