以林芝觉木和百巴两地的橙黄疣柄牛肝菌为研究对象,对水分、总糖、粗脂肪、粗纤维、粗蛋白、灰分、18种氨基酸及矿物元素进行分析。结果表明,(1)两地的橙黄疣柄牛肝菌含水分质量分数分别为91.07%和90.74%;粗蛋白质量分数分别为21.17%和19.77%;总糖质量分数分别是10.11%和9.02%;粗纤维质量分数分别为13.73%和13.72%;粗脂肪质量分数分别是4.67%和4.42%;灰分质量分数分别为5.88%和7.33%。(2)两菌的必需氨基酸含量占氨基酸总量为(E/T)44.34%、42.81%,E/N为0.80、0.75,且必需氨基酸总量均高于FAO/WHO提出的标准模式,根据AAS和CS评分,第一限制性氨基酸为Met+Cys,第二限制性氨基酸为Leu;两者的必需氨基酸指数分别是80.31和84.66,为可用蛋白源。(3)该菌的矿物元素含量丰富,其中常量元素中K含量最高,其次是Na和Ca;在微量元素中, Se含量较高(达3.72 mg/kg),且子实体中铅、镉、砷的含量均在国家规定的食品安全标准之内。因此,橙黄疣柄牛肝菌是一种高蛋白、高膳食纤维、低脂肪、具有较高营养价值的绿色食用菌。
In this paper, the nutritional components in the Leccinum aurantiacum (Bull.etPers.) Gray from Juemu and BaibA from Linzhi city were comprehensively analyzed.The results showed that: 1) the moisture contents of Juemu and Baiba' Leccinum aurantiacum (Bull.etPers.) Gray were 91.07% and 90.74%, respectively; the crude protein contents were 21.17% and 19.77%, respectively; the total sugar contents were 10.11% and 9.02%, respectively; the crude fiber contents were 13.73% and 13.72%, respectively; the crude fat contents were 4.67% and 4.42%, respectively; the ash contents were 5.88% and 7.33%.2) The ratio of (E/T) were 44.34%, 42.81%,and the ratio of E/N were 0.80 and 0.75, both are higher than FAO/WHO recommend.The essential amino acids index (EAAI) of Juemu and Baiba' Leccinum aurantiacum (Bull.etPers.) Gray are 80.31% and 84.66%, respectively.This study indicates this kind of mushroom is a good resources of high quality protein.According to AAS and CS, Met+Cys is the first limited amino acid, the second limited amino acid is Leu.3)The Leccinum aurantiacum (Bull.etPers.) Gray were abundant of mineral elements, especially K, Na, Ca.The mushrooms from both places contained abundant Se and less heavy metals.Therefore, Leccinum aurantiacum (Bull.etPers.) Gray is a kind of higher protein, higher dietary fiber, and lower fat.It has higher nutritional value.