两种辐照方式对灵芝孢子粉灭菌效果及品质影响的比较

Comparative Study on Sterilization Effects and Quality of Ganoderma Lucidum Spore Powder by Two Irradiated Modes

作者以破壁灵芝孢子粉为材料,研究了电子束和γ射线两种射线的不同辐照剂量对灵芝孢子粉微生物和品质的影响。结果表明:两种射线辐照对产品微生物和多糖质量分数变化基本一致。电子束和γ射线辐照灵芝孢子粉菌落总数的D_(10)值分别为2.167 k Gy和2.172 k Gy,霉菌与酵母菌的D_(10)值分别为2.646 k Gy和2.452 k Gy;当辐照低于8 k Gy时,电子束和γ射线辐照对灵芝孢子粉的多糖质量分数均无明显影响,而高于8 k Gy时,其多糖质量分数有显著变化。因此,低于8 k Gy的辐照剂量可视为破壁灵芝孢子粉安全辐照剂量。

In this study,the survival microorganism and quality of Ganoderma lucidum spore powder affected by electron beam and γ-rays was studied. The results showed that the microorganism and quality affected by electron beam was accordance with that of γ-rays. The D10 values of electron beam and γ-rays irradiation for aerobic bacterial count were 2.167 k Gy and 2.172 k Gy respectively,whereas the D10 values of mould and yeasts were 2.646 k Gy and 2.452 k Gy,respectively. When the irradiation dose was lower than 8 k Gy,ganodermic polysaccharide of Ganoderma Lucidum spore powder was not significant difference irradiated by this two models.However,when the irradiation dose was higher than 8 k Gy,the significant difference of ganodermic polysaccharide of Ganoderma lucidum spore powder was found. The irradiation dose of Ganoderma lucidum spore powder was best to lower than 8 k Gy.