摘要
采用国际上通用的氨基酸评分(AAS)、必需氨基酸指数(EAAI)、氨基酸比值系数分(SRCAA)等营养评价方法,对8种李(木奈)进行了蛋白质营养评价,并采用组间连接聚类法对8种供试材料进行了聚类分析。结果表明:李果实中氨基酸总量丰富,必需氨基酸占氨基酸总量的比例平均为20.23%;由氨基酸评分和氨基酸比值系数可知,甲硫氨酸和胱氨酸为第一限制氨基酸;8种李中三月李的必需氨基酸指数最高,其次为芙蓉李、红玫瑰李、黑琥珀李;8种李的必需氨基酸比值系数分均可达50以上。结果显示李果实蛋白质具有较高的营养价值。聚类分析将8种李分为3类,黑琥珀李、红玫瑰李、芙蓉李、三月李为一类且综合评价最好。
The internationally adopted nutrient value assessment method （amino acid score, AAb ; essential amino acid index, EAAI ; score of ratio coefficient of amino acid, SRCAA） was applied to the nutrient value assessment of protein of plums. 8 cuhivars of plums were analyzed. Between - groups linkage Hierachical Cluster Analysis also used to the assessment. The result showed that the contents of amino acids in plums were high. And essential amino acid accounted for 20. 23 % of total amino acid. Methionine and cystinic acid were the first limited amino acid of plums according to AAS and ratio coefficient of amino acid （RC） . Among the tested plums, the EAAI was highest of Sanyue plum, and then Furong plum, Red Rose and Black Amber. The SRCAA of 8 plums were all at a level of 50. These conclusions suggested that plums were good at nutrition of protein. On the other hand, 8 cultivars of plums were divided into three sorts, Black Amber, Red Rose, Furong and Sanyue plums were classified to a group, and they were fine of all -round assessment.
出处
《福建果树》
2012年第4期1-6,共6页
Fujian Fruits
基金
福建省农业科学院"双百"项目(sbmb1233)
农业部公益类行业科研专项(201003058-8)
福建省公益类科研院所专项(2011R1016-2)
福建省财政专项(CXTD2011-19)
关键词
李
氨基酸
营养评价
聚类分析
Plums
Amino acids
Nutrition assessment
Cluster analysis
