厚朴叶营养成分随不同采收期的变化分析  

Variation of Nutrients in Magnolia officinalis Leaves with Different Growing Periods

作　　者：张梦娜 田强 朱雨欣 韩竺伶 马林 ZHANG Meng-na;TIAN Qiang;ZHU Yu-xin;HAN Zhu-ling;MA Lin(School of Life Science and Engineering,Southwest University of Science and Technology;Engineering Research Center for Biomass Resource Utilization and Modification of Sichuan Province,Mianyang 621010,China)

机构地区：[1]西南科技大学生命科学与工程学院 [2]四川省生物质资源利用与改性工程技术研究中心,绵阳621010

出　　处：《天然产物研究与开发》2018年第8期1392-1398,共7页Natural Product Research and Development

基　　金：绵阳市科技局重点项目(15N-02-4);西南科技大学生命科学与工程学院大学生创新实践训练项目(smcx1608)

摘　　要：测定不同月份厚朴叶营养成分,了解厚朴叶营养成分含量变化趋势,为厚朴叶作为饲料添加剂或饲料提供可行性依据。采用一系列常规方法测定厚朴叶中营养成分、矿质元素和氨基酸的含量。结果表明厚朴叶水分含量为41.6%~82.5%,粗纤维为20.5%~24.1%,粗脂肪为3.9%~5.9%,维生素C为22.8~91.0μg/g,还原糖为7.5%~14.0%,可溶性糖为22.1~61.9 mg/g,蛋白质为0.2%~6.4%。分析发现厚朴叶含有Ca、Mg、Fe、Cu、Mn、Zn等矿质元素,共检测出17种氨基酸。所有营养成分指标在不同月份间大多具有显著性差异。厚朴叶粗纤维含量高可作为牛羊等反刍动物饲料,也可根据动物的营养需求作为饲料添加剂。与其它月份比较而言,9月份生长的厚朴叶各项营养成分指标相对较好。The aim of this study was to investigate the content and change of nutrients in Magnolia officinalis leaves in different growing periods and to analyze the feasibility of M.officinalis leaves as feed or feed additives.Using the conventional analysis methods,the content of water,crude fiber,crude fat,soluble sugar,reducing sugar,vitamin C,protein,amino acids and mineral elements of the leaves,collected from April to September in 2015,were determined.The results showed that the content of water,crude fiber,crude fat and vitamin C in M.officinalis leaves was 41.6%-82.5%,20.5%-24.1%,3.9%-5.9%and 22.8-91.0μg/g respectively,and the soluble sugar content ranged from 22.1 to 61.9 mg/g and the reducing sugar content was 7.5%-14.0%.The mineral elements such as Ca,Mg,Mn,Fe,Zn,Cu and 17 kinds of amino acid were identified in M.officinalis leaves.The protein content in M.officinalis leaves was limited,from 0.2%to 6.4%.To be taken together,the nutrients in M.officinalis leaves were changed significantly with the growing period.M.officinalis leaves with high crud fiber can be used as feedstuff of ruminant animal including cattle and sheep or as feed additives according to the nutritional needs of animals.On the whole,the leaves collected in September were better than those from other months.

关 键 词：厚朴叶 营养成分 饲料添加剂 含量测定 

分 类 号：S567.11[农业科学—中草药栽培]