摘要
以新鲜龙香芋为原料,对其水溶性多糖的水溶醇沉提取工艺进行优化,并通过体外模拟人体胃肠消化环境,测定其对脂肪、胆固醇、胆酸盐的结合能力,考察芋头多糖的体外降脂效果。结果表明,当提取温度80℃、提取时间6h、料液比1∶6(g/mL)、乙醇体积分数85%时,芋头多糖提取效果最好,提取率达(4.92±0.18)%。芋头多糖经过胃肠消化系统后,对脂肪和胆酸盐的吸附效果优于对照纤维素,对两者的结合能力与其质量浓度呈现显著相关性;对胆固醇的吸附效果低于纤维素,表明芋头多糖具有一定的降脂功能,降脂机理与纤维素不同。
The extraction technology of water soluble polysaccha rides in fresh taro was investigated in this paper. Using simulated conditions of human digestion in vitro, its fat-binding, cholesterol binding and bile salts-binding capacities were studied in order to eval uate its potential hypocholesterolemic activity in vitro. The results showed that the highest extraction efficiency of taro polysaccharide could be obtain under the conditon of using solid-liquid ratio at 1 ： 6, reacting at 80 ℃ for 6 h with 85% ethanol, and the extraction ratio reaches （4.92±0.18）%. Taro water soluble polysaccharides ex- hibited much higher binding capacities of both fat and bile acid, while much lower one of cholesterol, compared to cellulose. The above re- suits revealed that taro water - soluble polysaccharides could po＊en- tially alleviate the hyperlipidemia.
作者
刘萍
祁兴普
刘靖
姚芳
李志方
LIU Ping QI Xing-pu LIU Jing YAO Fang LI Zhi-fanng(School of Food Science and Technology, J iangsu A gri Animal Husbandry Vocational College, Taizhou, Jiangsu 225300, Chin)
出处
《食品与机械》
CSCD
北大核心
2016年第10期132-136,199,共6页
Food and Machinery
基金
泰州市农业科技支撑项目(编号:TN2013001)
江苏省青蓝工程科技创新团队培养对象
关键词
芋头
多糖
体外降脂
胆酸
胆固醇
Taros polysaeeharide
lipid-lowering in vitro
bile acid
cholesterol
作者简介
刘萍，女，江苏农牧科技职业学院副教授，博士。
通讯作者：李志方（1972-），男，江苏农牧科技职业学院副教授，硕士。Email：292510731@qq．com.
