期刊
FOOD CHEMISTRY
卷 362, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130218
关键词
Chitosan; Molecular weight; Antioxidant activity; beta-carotene; Nanoemulsion; Layer-by-layer technique
资金
- National Natural Science Foundation of China [22078198, 31601512]
- Guangdong Basic and Applied Basic Research Foundation [2020A1515010747, 2019A1515011690]
- Science and Technology Innovation Commission of Shenzhen [JCYJ201 80305125358023, JCYJ20170818143102818, JCYJ2017081809342 9961, KQJSCX20180328095421750]
This research synthesized and characterized three chitosan-gallic acid conjugates with different molecular weights, showing that the high molecular weight conjugate exhibited the highest antioxidant activity and improved the chemical stability of β-carotene nanoemulsion.
In this research, three various Mw of chitosan (CS)-gallic acid (GA) conjugates were synthesized, characterized, and used for improvement of physicochemical stability of 0-carotene (BC) nanoemulsion (NE) by layer-by-layer technique. GA conjugation degrees were in the following order: HCS (125.6 mg/g) > MCS (102.3 mg/g) > LCS (74.6 mg/g) at GA:CS mass ratio of 0.5:1. Three varying Mw of CS-GA conjugates exhibited pronouncedly higher antioxidant abilities than native CS. For native CS, antioxidant abilities increased with the decrease of Mw. However, HCS-GA conjugate showed the highest antioxidant activity, due to the higher GA conjugation degrees and decreased intramolecular hydrogen bonds and crystallinity in HCS-GA conjugate. CS-GA conjugates substantially improved BC chemical stability in NE than CS and BC retentions were in the following order: HCS-GA (76.8%) > MCS-GA (68.3%) > LCS-GA (53.4%) after 30 days storage. The results obtained may provide some useful information for the applications of CS-GA conjugates for nutraceuticals stabilization in food systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据