中国食品添加剂2025，Vol.36Issue(6)：1-7,7.DOI:10.19804/j.issn1006-2513.2025.6.001
不同pH值酸处理对江蓠琼脂提取的影响研究
The effect of different pH value on agar extraction from Gracilaria during acidic treatment
摘要
Abstract
Agar is a crucial algal polysaccharide product.However,the effects and standardized control of acidic treatment process for its extraction from Gracilaria has not been fully optimized.This study investigated the effect of acidic treatment at varying pH levels on agar extraction from Gracilaria.The results demonstrated that acid treatment at different pH values significantly influenced Gracilaria microstructure as well as the extraction rate,sulfate content,gel strength,turbidity,gelling temperature,and melting temperature.Within the pH range of 3.3 to 2.1,as the acid treatment pH decreased,the exposure of Gracilaria's medulla cells increased,with the agar extraction rate initially increasing and then decreasing.Concurrently,the gel strength of the agar consistently increased,while the sulfate content,turbidity,gelling temperature,and melting temperature continually decreased.This study provides a theoretical basis for optimizing acidic treatment in agar production and contributes to the development of standardized extraction technologies.关键词
江蓠/琼脂/酸处理/理化性质/结构Key words
Gracilaria/agar/acidic treatment/physicochemical property/structure分类
轻工业引用本文复制引用
张馨月,姚沅俊,木尼热·卡地尔,郑明静,姜泽东,杜希萍,倪辉..不同pH值酸处理对江蓠琼脂提取的影响研究[J].中国食品添加剂,2025,36(6):1-7,7.基金项目
国家重点研发计划课题(2023YFD2100603) （2023YFD2100603）
