食用菌的傅里叶变换红外光谱鉴别

Identification of Edible Mushrooms by Fourier Transform Infrared Spectroscopy

利用傅里叶变换红外光谱法 (FTIR)研究了担子菌木耳目、非褶菌目和伞菌目 6个科 9个属的 10种食用菌的子实体。将光谱分为 5个区S1区 ( 30 5 0～ 2 80 0cm-1) ,S2区 ( 175 0～ 15 0 0cm-1) ,S3区 ( 15 0 0～12 0 0cm-1) ,S4区 ( 12 0 0～ 95 0cm-1) ,S5区 ( 95 0～ 70 0cm-1) ;在 5个区中 ,强峰出现在S4区的 10 80cm-1附近和 10 4 0cm-1( 10 2 0cm-1)附近 ,以及S2区的 16 4 0cm-1附近 ,16 4 0cm-1附近的峰为酰胺Ⅰ振动峰 ,前两峰为糖类振动峰。根据 5个区光谱峰值和吸收强度比 ,可以鉴别不同的食用菌。70 0～ 95

In this paper, Fourier transform infrared spectroscopy (FTIR) was used to identify edible mushrooms belonging to Auriculariales, Aphyllophorales, and Agaricales, of Basidiomycotina. Vibrational spectra of fruiting bodies of ten species belonging to nine different genera of mushrooms (one is cultivated, and the others are wild growing) were recorded. The spectra were divided into five regions, i.e. 3050 to 2800 cm(-1), 1750 to 1500 cm(-1), 1500 to 1200 cm(-1), 1200 to 950 cm(-1), and 950 to 700 cm(-1). These regions contain characteristic bands among different mushrooms. According to the characteristic bands in the five regions, different species of mushrooms can be identified. Vibrational spectra in the interval between 950 and 700 cm(-1) could serve as fingerprints to discriminate different genera of mushrooms.