阳丰甜柿果实营养成分和氨基酸组分分析

Analysis on Nutritive Compositions,Amino Acid Content of Diospyros kaki cv.Youhou Fruit

为探明阳丰甜柿的营养价值,对阳丰甜柿(Diospyros kaki cv.Youhou)主要营养成分进行测定,并与11种常见水果的VC、部分矿物质及微量元素、氨基酸含量及组分进行对比分析。结果表明:阳丰甜柿水分、粗纤维、脂肪、蛋白质、灰分、单宁及总糖含量分别为80.7、1.2、0.1、0.6、0.4、0.2和11.4g·(100g)-1;VC含量为59.5mg·(100g)-1,排名第3位;K、Na、Ca、Mg、Fe含量分别居第4、7、7、3、12位。阳丰甜柿含有全部18种氨基酸,氨基酸含量为339mg·(100g)-1,但Met和Cys含量极低;E/T、E/N、CE/T值分别为34%、52%、12%,排至第5、5、4位;鲜味类、甜味类、芳香族氨基酸含量分别居第8、8、9位。阳丰甜柿各种人体必需氨基酸,Thr、Val、Lle、Leu、Phe+Tyr、Lys的含量占氨基酸总量的比例与1973年FAO/WHO修订的人体必需氨基酸含量模式谱基本一致,仅Cys+Met缺乏。综合来看,阳丰甜柿营养价值相对较高。

In order to ascertain nutritional value of Diospyros kaki cv .Youhou ,the nutritive compositions were deter‐mined ,while the VC content ,mineral substance and trace element ,amino acid content and composition were compared to other eleven kinds of fruit .The results showed that the water content ,crude fiber ,fat ,protein ,ash ,tannin and total sugar were 80 .7 ,1 .2 ,0 .1 ,0 .6 ,0 .4 ,0 .2 and 11 .4 g·（100 g）^‐1 ,respectively .VC content was 59 .5 mg·（100 g）^‐1 ranking in the third .The rank of K ,Na ,Ca ,Mg and Fe were the fourth ,seventh ,seventh ,third and twevelth .The Dio‐spyros kaki cv .Youhou fruit contained 18 kinds of amino acids which the total amino acid content was 339 mg·（100 g）^‐1 ,but Met and Cys were very low .The E/T value was 34% ,the E/N value was 52% ,and the CE/T value was 12% ,they were ranked at 5 ,5 ,4 ,respectively .In Diospyros kaki cv .Youhou fruit ,the delicate taste ,the sweet taste and the aromatic amino acid contents ranked 8 ,8 and 9 .The percentage of human essential amino acid con‐tent in Diospyros kaki cv .Youhou fruit including Thr ,Val ,Lle ,Leu ,Phe＋Tyr and Lys to the total amino acid content were in according with the pattern spectrum which FAO/WHO revised in 1973 ,only Cys＋Met was lacked .In gener‐al ,Diospyros kaki cv .Youhou fruit had relatively high nutritional value .