苎麻近缘植物氨基酸组成及其营养评价

摘要

In order to investigate the nutrients and utilize the forage value better , the contents of crude protein , amino acid and crude fiber of ramie -closed species were studied , the results showed that the amino acids of Boehmeria nivea var.tenacissima ( Gaudich) Miq, B.tricuspis ( Hance) Makino, B.formosana Hayata and B.longispica Steud were very rich , and the contents of TAA and EAA were higher than the control , among which B.nivea var.tenacissima ( Gaudich ) Miq had the highest content.EAA /TAA of the seven kinds of ramie -closed species ( varieties ) was above 40% and EAA/NEAA was above 69%.The protein contents of B.nivea var.tenacissima ( Gaudich ) Miq and B.formosana Hayata were above 20%and the fiber contents were below 18%.All the nutrients in these two ramie -closed species could meet the requirement of the protein feeds , so they could be exploited as an excellent material for animal protein feeds.%为探明苎麻近缘植物营养成分和更好开发利用其饲用价值，对苎麻近缘植物的粗蛋白、氨基酸及粗纤维含量进行了比较研究，结果表明：青叶苎麻、悬铃叶苎麻、海岛苎麻和大叶苎麻氨基酸含量较为丰富， TAA和EAA含量均优于对照苎麻，以青叶苎麻优势表现较为明显，增幅显著。苎麻7种近缘种（变种）的EAA /TAA均超过了40％， EAA /NEAA均在69％以上。青叶苎麻、海岛苎麻粗蛋白含量均高于20％，纤维含量低于18％，符合植物蛋白质饲料要求，鉴于此，可作为动物优异蛋白饲料开发利用。