摘要
选取新疆特色植物药桑与黑桑的桑葚、桑叶和桑树皮为研究对象,分别利用高效液相色谱法、原子吸收光谱法、紫外分光光度法和常规方法测定氨基酸、矿物质、黄酮、多糖和生物碱含量。结果表明:药桑和黑桑不同部位中蛋白氨基酸种类丰富,均含有17种氨基酸,必需氨基酸与总氨基酸的比值均在0.60以上;对人体有益的矿物质含量也较丰富;生物活性物质含量也较为丰富,其中药桑葚中生物碱含量最高,可达1.393 mg/g(干基),药桑皮中黄酮含量最高,可达11.999 mg/g(干基),黑桑葚中多糖含量最高,可达337.491 mg/g(干基)。利用主成分分析对29个指标提取了4个主成分,累计方差贡献率达97.000%。综合评分结果表明药桑价值更高。
The fruits,leaves and barks of Morus nigra L.and M.alba L.var.tatarica,two special plants in Xinjiang autonomous region,were analyzed by high performance liquid chromatography（HPLC）,atomic absorption spectrometry,UV spectrophotometry and conventional methods for amino acids,mineral elements,flavonoids,polysaccharides,and alkaloids.The results showed that different plant parts of both mulberry species were rich in a wide variety of amino acids（17 amino acids）with an essential amino acid to total amino acid ratio higher than 0.60,and contained abundant health beneficial mineral elements and bioactive ingredients.Alkaloids,flavonoids and polysaccharides were the most abundant in the fruits and barks of Morus nigra L.,and the fruits of M.alba L.var.tatarica（1.393,11.999 and 337.491 mg/g on a dry basis）,respectively.Four principal components,which had a cumulative variance contribution ratio of 97.000% to the information on 29 initial indexes,were extracted in principal component analysis（PCA）.Morus nigra L.scored higher overall,thereby having higher medicinal value.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2016年第8期91-96,共6页
Food Science
基金
国家自然科学基金地区科学基金项目(31460080)
塔里木大学校长基金项目(TDZKQN201513)
塔里木大学研究生创新项目(TDGRI201519)
关键词
氨基酸
矿物质
总黄酮
生物碱
多糖
主成分分析
amino acids
mineral elements
flavonoids
alkaloids
polysaccharides
principal component analysis（PCA）
