食品与发酵工业2024，Vol.50Issue(1)：89-97,9.DOI:10.13995/j.cnki.11-1802/ts.034032
基于共混和层层自组装方法协同交联剂对琼胶/海藻酸钠复合膜性能的影响
Effect of synergistic crosslinking agent based on blending and layer-by-layer assembly method on properties of agar/sodium alginate composite film
摘要
Abstract
Agar/sodium alginate blend films and bilayer films were prepared by direct mixing and layer-by-layer assembly,and the cross-linking agents involving citric acid and ferulic acid were introduced.By investigating the mechanical strength,water resistance,thermal stability,Fourier transform infrared spectrometer(FT-IR),and microstructure of the composite films,the effects of different film-making methods combined with cross-linking agents on the properties of the composite films were explored.Results showed that compared with the blend films,the bilayer films showed better mechanical properties and water resistance.After adding crosslinking agents,the wa-ter vapor permeability of the films decreased significantly(P＜0.05)and the tensile strength,thermal stability,and opacity increased.Among them,citric acid crosslinked bilayer film had the best comprehensive properties,namely,tensile strength of 51.57 MPa,elonga-tion at break of 26.02％,water solubility of 24.42％,and swelling rate of 101.67％.FT-IR analysis showed that citric acid was cova-lently crosslinked by esterification with seaweed polysaccharide to form C=O,while ferulic acid was noncovalently crosslinked by hydro-gen bonding with the film-forming substrate.SEM analysis showed that agar and sodium alginate had good compatibility,and the surface of each film was flat and smooth.After adding a crosslinking agent,the cross-sections of the films were smoother and the structure of the films was more compact.Therefore,the combination of layer-by-layer assembly and crosslinking agents can prepare a composite membrane with better comprehensive properties.关键词
琼胶/海藻酸钠/层层自组装/交联剂Key words
agar/sodium alginate/layer-by-layer assembly/crosslinking agent引用本文复制引用
王牌,陈胜军,杨少玲,戚勃,杨贤庆,李春生,王迪,赵永强,李来好,胡晓..基于共混和层层自组装方法协同交联剂对琼胶/海藻酸钠复合膜性能的影响[J].食品与发酵工业,2024,50(1):89-97,9.基金项目
国家重点研发计划项目(2019YFD0901905) （2019YFD0901905）
财政部和农业农村部国家现代农业产业技术体系资助项目(CARS-50) （CARS-50）
农业农村部水产品加工重点实验室开放基金项目(NYJG202108) （NYJG202108）
中国水产科学研究院基本科研业务费资助项目(2020TD69) （2020TD69）
中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费项目(2021SD06) （2021SD06）
