Analysis of amino acid composition and content in three new varieties of red sand pear

Abstract：【Objective】Analysis the amino acids of fruits variance in three new varieties of red sandy pear, in order to provide theoretical basis, which study on resource quality and production of red sand pear.【Methods】The content of 17 kinds of amino acids in fruits was determined by using an automatic amino acid analyzer with three new varieties of red pears, which were intended to be popularized in large area, called'Hongcui''Zhengzhuhong'and'Caiyunhong'.【Results】The results showed that the amino acids in 3 medium ripe red pear fruits were all of various kinds, all containing 17 amino acids measured, including 7 essential amino acids for human body, 2 essential amino acids for children and 8 other amino acids.The total amount of amino acid in the three kinds of fruit juice was 2 083-4 118 mg·mL-1, among which the lowest was'Hongcui'and the highest was'Zhengzhuhong'.【Conclusion】There was disparity of different red pears in forms of the content of essential amino acid content of human, the essential amino acid content of children as well as the kind of taste amino acid.Compare to'Hongcui'and'Zhengzhuhong''Caiyunhong'fits more the growth of children.In the next step, this characteristic can be used as the direction of fruit quality development or selection of good varieties.