金耳营养成分分析及其溶液功能性研究  

Nutrient analysis and solution functionality study of Tremella aurantilba

作　　者：赵迎春 冯慧 孙丽平[2] ZHAO Ying-chun;FENG Hui;SUN Li-ping(Center for Food and Drug Inspection of Yunnan Province,Kunming 650106,China;Faculty of Food Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]云南省食品药品审核查验中心,云南昆明650106 [2]昆明理工大学食品科学与工程学院,云南昆明650500

出　　处：《云南民族大学学报(自然科学版)》2025年第2期167-174,共8页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：云南省重点研发项目(202202AG050009).

摘　　要：基于国家标准方法测定营养成分、矿物质元素和蛋白氨基酸,利用三重四极杆串联质谱仪分析亲水性滋味成分和有机酸.采用频率扫描、振幅扫描与稳态剪切,测定金耳水提物在不同浓度下的模量、黏度与抗变形能力.基于金耳对葡萄糖吸附容量和α-淀粉酶抑制率,表征金耳在体外消化中对葡萄糖释放及淀粉消化的影响.结果发现,金耳子实体富含多糖和矿物质,具有高钾低钠的特点,共检出15种蛋白氨基酸、13种亲水性滋味成分和6种有机酸;其水提物中多糖质量分数为75.63%,且随着浓度的增加,呈现出良好的凝胶性和弹性行为;此外,仿生消化体系中,添加0.5 g金耳粉后,表现出优异的控糖特性,其葡萄糖吸附能力为15.15 mmol/g且α-淀粉酶抑制率高达20.91%.上述结果表明金耳子实体营养丰富,其溶液具有粘弹性行为和一定的体外控糖性能.Macronutrient compositions,nine mineral elements and amino acids were determined based on the national standard methods.Hydrophilic taste components and organic acids were determined using a triple quadrupole-tandem mass spectrometer.The water extracts of Tremella aurantialba were prepared and the polysaccharide content was determined.The modulus,viscosity and resistance to deformation of the extracts at different concentrations were investigated by frequency scanning,amplitude scanning and steady state shear.The glucose adsorption capacity andα-amylase inhibition ability of Tremella aurantialba were measured by evaluating its inhibiting effects on glucose release and starch digestion during in vitro digestion.The results showed that Tremella aurantialba was rich in polysaccharides,protein and mineral elements.Tremella aurantialba showed high content of potassium and low content of sodium.15 protein amino acids,13 hydrophilic taste components and 6 organic acids were detected from Tremella aurantialba.The polysaccharide content of its water extract reached 75.63%,and it exhibited improved gelation and elastic behavior with increasing concentration.In addition,the addition of 0.5 g of Tremella aurantialba powder in the in vitro system showed good glucose adsorption ability(15.15 mmol/g)andα-amylase inhibition rate(20.91%).In summary,Tremella aurantialba is a kind of highquality food materials for the development of healthy products.

关 键 词：金耳 营养成分 流变学特性 体外控糖性能 

分 类 号：TS201.4[轻工技术与工程—食品科学]