天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (11): 1843-1848.

• 开发研究 • 上一篇    下一篇

泽泻梗的营养成分及对α-葡萄糖苷酶活性的影响

易醒1,卢艳梅1,谭潇啸1,肖小年2*   

  1. 1 南昌大学中德食品工程中心;2 南昌大学中德联合研究院,南昌 330047
  • 出版日期:2014-11-29 发布日期:2014-12-18

Nutrients and α-Glucosidase Inhibitory Activity of Peduncle of Alisma orientale

YI Xing1, LU Yan-mei1, TAN Xiao-xiao1, XIAO Xiao-nian2*   

  1. 1 Sino-German Food Engineering Center,Nanchang University;2 Sino-German Joint Research Institute, Nanchang University,Nanchang 330047,China
  • Online:2014-11-29 Published:2014-12-18

摘要: 采用国标方法测定泽泻梗的营养成分,用化学比分法和氨基酸比值系数法对其蛋白质的营养价值进行评价。此外,还对泽泻梗粗提物抑制α-葡萄糖苷酶的活性进行了测定。结果表明:泽泻梗(每100 g干样)含粗蛋白26.10 g、粗脂肪2.20 g、总膳食纤维27.56 g、灰分8.70 g、多糖4.22 g、还原糖4.87 g、维生素C 406.30 mg、胡萝卜素380.00 μg。泽泻梗蛋白质组成中必需氨基酸/总氨基酸(EAA/TAA)为39.54%、必需氨基酸/非必需氨基酸(EAA/NEAA)为60.46%,鲜味氨基酸占总氨基酸含量的40%以上;其第一限制性氨基酸为含硫氨基酸(蛋氨酸和胱氨酸)。浓度为500 μg/mL的泽泻梗水提醇沉物、泽泻梗醇提物的α葡萄糖苷酶抑制率分别为43.75%、39.90%。

关键词: 泽泻, 营养成分, &alpha, -葡萄糖苷酶抑制活性, 氨基酸评价

Abstract: The nutrients components of the peduncle of Alisma orientale (Sam.) Juzep.were determined using national standard method and its nutritional value of protein was evaluated by methods of chemical score and ratio coefficient of amino acid.In addition,the inhibitory activity of its crude extracts on α-glucosidase was investigated. The results showed that the contents (per 100 g of dry sample) of crude protein,crude fat,total dietary fiber,ash,polysaccharide,reducing sugar,vitamin C and carotene were 26.10,2.20,27.56,8.70,4.22,4.87 g,406.30 mg and 380.00 μg,respectively.The ratio of essential amino acid to total amino acid (EAA/TAA) was 39.54% and the ratio of essential amino acid to not essential amino acid (EAA/NEAA) was 60.46%.The proportion of flavor amino acid in total amino acid was more than 40%.Sulphur amino acids (methionine and cystine) were its first limiting essential amino acid.In addition,both of its water and alcohol extract (500 μg/mL) showed inhibitory activity on α-glucosidase,with inhibition rates of 43.75% and 39.90% respectively.

Key words: Alisma orientale, nutrients, &alpha, -glucosidase inhibition, amino acids assessment

中图分类号: 

TS201.4