Polyphenol is an important secondary metabolite with unique physiological functions and biological activity.The polyphenols in different plants and biomass have different chemical structures,which needs various extrac...Polyphenol is an important secondary metabolite with unique physiological functions and biological activity.The polyphenols in different plants and biomass have different chemical structures,which needs various extraction methods to obtain them.Recently,plant polyphenols and their application research in food and medicine have become a research hotspot,which is mainly focused on preparation,purification,structural identification,and biological activity assays.Among these researches,extraction and separation are the key sections to investigate the structure and activity of polyphenol.Hence,this review summarized the recent extraction and separation techniques of polyphenol,including solvent extraction,supercritical fluid extraction,ultrasonic extraction,enzymatic extraction,resin adsorption extraction,and electric field method,etc.In addition,this review also reveals the current problems and proposes future extraction research of polyphenol.It is hoped that this review will provide a guide for the researchers who are actively committed to promoting progress in the field of polyphenolics.展开更多
通过吸附、解吸试验,筛选适合分离纯化核桃青皮多酚的大孔树脂,并对分离纯化条件进行优化。以没食子酸、原儿茶素等9种标准品绘制标准曲线,采用HPLC对所得核桃青皮多酚物质进行定性和定量分析。结果表明:NKA-9树脂是分离纯化核桃青皮多...通过吸附、解吸试验,筛选适合分离纯化核桃青皮多酚的大孔树脂,并对分离纯化条件进行优化。以没食子酸、原儿茶素等9种标准品绘制标准曲线,采用HPLC对所得核桃青皮多酚物质进行定性和定量分析。结果表明:NKA-9树脂是分离纯化核桃青皮多酚的最佳树脂,吸附条件为上样液多酚浓度0.574 mg/m L,p H 1.0,上样速率1.3 m L/min,吸附率可达90.1%;洗脱条件为体积分数50%的乙醇洗脱剂,p H 3.0,洗脱速率0.43 m L/min,解吸率达87.9%。经HPLC鉴定和分析,核桃青皮酚类物质主要由原儿茶素、绿原酸、咖啡酸、表儿茶素、阿魏酸、芦丁等单体组成,其中含量较高的为表儿茶素、原儿茶素和芦丁。展开更多
[目的]对马尾藻中褐藻多酚进行研究。[方法]采用试验的方法,对广西北海涠洲岛马尾藻中多酚的提取、分离提纯、定性、定量分析以及抗菌的活性检验进行研究,考察不同的乙醇浓度、体积数及提取时间对褐藻多酚提取量的影响。[结果]40 ml 65...[目的]对马尾藻中褐藻多酚进行研究。[方法]采用试验的方法,对广西北海涠洲岛马尾藻中多酚的提取、分离提纯、定性、定量分析以及抗菌的活性检验进行研究,考察不同的乙醇浓度、体积数及提取时间对褐藻多酚提取量的影响。[结果]40 ml 65%乙醇提取2 h对褐藻多酚的提取有显著影响,测得马尾藻中褐藻多酚的含量为7.777 mg/g;当纸片法的褐藻多酚浓度为140.055μg/张时,对沙门氏杆菌抑菌效果明显,大肠杆菌次之,但对枯草芽孢杆菌抑菌效果不明显,对金黄色葡萄球菌不敏感。[结论]乙醇的浓度、体积数和提取时间都会影响马尾藻多酚的提取。展开更多
基金This work was sponsored by Natural Science Foundation of Jiangsu Province(BK20180772)National Natural Science Foundation of China(31800501)Qing Lan Project.
文摘Polyphenol is an important secondary metabolite with unique physiological functions and biological activity.The polyphenols in different plants and biomass have different chemical structures,which needs various extraction methods to obtain them.Recently,plant polyphenols and their application research in food and medicine have become a research hotspot,which is mainly focused on preparation,purification,structural identification,and biological activity assays.Among these researches,extraction and separation are the key sections to investigate the structure and activity of polyphenol.Hence,this review summarized the recent extraction and separation techniques of polyphenol,including solvent extraction,supercritical fluid extraction,ultrasonic extraction,enzymatic extraction,resin adsorption extraction,and electric field method,etc.In addition,this review also reveals the current problems and proposes future extraction research of polyphenol.It is hoped that this review will provide a guide for the researchers who are actively committed to promoting progress in the field of polyphenolics.
文摘通过吸附、解吸试验,筛选适合分离纯化核桃青皮多酚的大孔树脂,并对分离纯化条件进行优化。以没食子酸、原儿茶素等9种标准品绘制标准曲线,采用HPLC对所得核桃青皮多酚物质进行定性和定量分析。结果表明:NKA-9树脂是分离纯化核桃青皮多酚的最佳树脂,吸附条件为上样液多酚浓度0.574 mg/m L,p H 1.0,上样速率1.3 m L/min,吸附率可达90.1%;洗脱条件为体积分数50%的乙醇洗脱剂,p H 3.0,洗脱速率0.43 m L/min,解吸率达87.9%。经HPLC鉴定和分析,核桃青皮酚类物质主要由原儿茶素、绿原酸、咖啡酸、表儿茶素、阿魏酸、芦丁等单体组成,其中含量较高的为表儿茶素、原儿茶素和芦丁。
文摘[目的]对马尾藻中褐藻多酚进行研究。[方法]采用试验的方法,对广西北海涠洲岛马尾藻中多酚的提取、分离提纯、定性、定量分析以及抗菌的活性检验进行研究,考察不同的乙醇浓度、体积数及提取时间对褐藻多酚提取量的影响。[结果]40 ml 65%乙醇提取2 h对褐藻多酚的提取有显著影响,测得马尾藻中褐藻多酚的含量为7.777 mg/g;当纸片法的褐藻多酚浓度为140.055μg/张时,对沙门氏杆菌抑菌效果明显,大肠杆菌次之,但对枯草芽孢杆菌抑菌效果不明显,对金黄色葡萄球菌不敏感。[结论]乙醇的浓度、体积数和提取时间都会影响马尾藻多酚的提取。