黑木耳、银耳、黑牛肝菌的红外光谱研究

FT-IR Study of the Mushrooms Auricularia auricular, Boletus aereus and Tremella fuciformis

利用傅里叶变换红外光谱仪对三种食用菌(黑木耳、黑牛肝菌、银耳)样品进行了研究。三种菌的光谱各具特征,黑木耳和银耳光谱主要谱峰相似,但与黑牛肝菌的光谱区别较大;根据吸收强度比可以将黑木耳和银耳区分开。光谱结果还显示,三种食用菌多糖,既有α糖苷键,也有β糖苷键。红外光谱具有快速、简便、不需对样品进行分离提取等优点。

Three mushrooms (Auricularia auricula, Boletus aereus, and Tremella fuciformis) were studied by Fourier transform infrared (FT-IR) spectroscopy. The results show that the mushrooms have characteristic infrared spectrum respectively, by which the mushroom Boletus aereus can be differentiated from the others. Auricularia auricula also can be distinguished from Tremella fuciformis by several major absorbance ratios, although the spectrum of Auricularia auricula is similar to that of Tremella fuciformis. The infrared spectra also indicate that the polysaccharides of the three mushrooms contain α-glycosidic linkage and β-glycosidic linkage. It is proved that FT-IR spectoscopy is a rapid, simple, reliable and non-destructive method in the identification of mushrooms.