天然产物研究与开发2018，Vol.30Issue(2)：316-324,9.DOI:10.16333/j.1001-6880.2018.2.024
地木耳粗多糖超声波辅助提取工艺优化及其动力学和热力学分析
Optimization of Ultrasonic-assisted Exaction of Crude Polysaccharide from Nostoc commune vauch and Its Kinetic and Thermodynamic Analysis
摘要
Abstract
Response surface methodology was applied to optimize the ultrasonic-assisted extraction of crude polysaccharide from Nostoc commune vauch based on the results of single factor including the effect of solid-liquid ratio,ultrasonic temperature,ultrasonic power and ultrasonic time on the yield of crude polysaccharides.A kinetic model of crude polysaccharide extraction was established according to Fick's second law,and the dynamics parameters such as rate constant,relative extraction rate and activation energy were obtained.Meanwhile,thermodynamic properties were studied.The results showed that optimal extraction condition of crude polysaccharide was solid-liquid ratio of 1/50 (g/mL),ultrasonic temperature of 350.15 K,ultrasonic power of 540 W and ultrasonic time of 25 min,the yield of crude polysaccharide was up to 13.07％ under above condition.The extraction process conforms to the first-order kinetic model,and the experimental data agreed well with the calculated values of the kinetic model.Thermodynamic analysis showed that the extraction process of polysaccharides from N.commune was endothermic,irreversible and spontaneous.关键词
地木耳/超声波辅助多糖提取/响应面分析法/动力学与热力学Key words
Nostoc commune vauch/ultrasonic assisted polysaccharides extraction/response surface analysis/kinetics and thermodynamics分类
轻工纺织引用本文复制引用
刘继超,刘晓风,Lormoua Kiatoukosin,王永刚,徐也,张璇,杨明俊..地木耳粗多糖超声波辅助提取工艺优化及其动力学和热力学分析[J].天然产物研究与开发,2018,30(2):316-324,9.基金项目
国家自然科学基金(31460032,81660581) （31460032,81660581）
