食品工业科技2026，Vol.47Issue(6)：96-106,11.DOI:10.13386/j.issn1002-0306.2025030404
硫酸酯化无籽刺梨渣可溶性膳食纤维的亚硝酸盐吸附和体外降脂作用
Adsorption of Nitrite and in Vitro Lipid-lowering Studies of Sulfated Soluble Dietary Fiber from Rose sterilis Pomace
摘要
Abstract
The structural modification of Rosa sterilis pomace soluble dietary fiber(RSDF)was performed through the sulfamic acid-N,N-dimethylformamide method to obtain sulfated Rosa sterilis pomace soluble dietary fiber(SSDF).The adsorption characteristics and mechanism of SSDF on nitrite,cholesterol,and three bile salts(sodium taurocholate,sodium glycochenodeoxycholate,and sodium cholate)were systematically investigated by analyzing adsorption kinetics and isothermal adsorption model under varying additions,including additive amount,adsorption times,and initial solution concentrations.The results showed that the sulfuric acid esterification modification significantly improved the adsorption capacity of SSDF for nitrite.At an addition amount of 100 mg,SSDF exhibited a higher adsorption amount(34.84 mg/g)and adsorption rate(68.94%)compared to RSDF(29.01 mg/g,34.24%).For cholesterol adsorption,the difference between SSDF and RSDF was minimal.However,SSDF demonstrated superior performance within a short time(≤30 min).The adsorption of nitrite onto cholesterol by SSDF and RSDF was suitable to be fitted by quasi-secondary kinetics and Freundlich model.Furthermore,SSDF exhibited a better adsorption characteristic for cholate,especially for sodium cholate,achieving a maximum adsorption rate of 90.31%.The adsorption process was in accordance with the Freundlich model fitting(R2>0.9534).This study has the potential to provide theoretical insights into enhancing the adsorption capacity and utilization efficiency of soluble dietary fiber in Rosa sterilis pomace.Furthermore,these results can establish a scientific foundation for the application of sulfated modified dietary fiber in human health regulation.关键词
无籽刺梨/可溶性膳食纤维/硫酸酯化改性/吸附动力学/等温吸附模型Key words
Rose sterilis pomace/soluble dietary fiber/sulfuric acid esterification modification/adsorption kinetics model/isothermal adsorption models分类
轻工纺织引用本文复制引用
陈颖,苏靖程,鲁燕玲,郭磊,范方宇,马倩..硫酸酯化无籽刺梨渣可溶性膳食纤维的亚硝酸盐吸附和体外降脂作用[J].食品工业科技,2026,47(6):96-106,11.基金项目
云南省"兴滇英才计划"青年人才专项(YNWR-QNBJ-2018-046) （YNWR-QNBJ-2018-046）
云南省科技厅中青年学术和技术带头人后备人才项目(202405AC350032). （202405AC350032）
