冷藏与辐照对山药保鲜效果的比较研究

Comparison on the Preservation Effect of Cold Storage and Irradiation of Dioscorea opposita Thunb

以铁棍山药为试材,研究冷藏与不同剂量γ射线辐照后常温贮藏期间山药的发芽及重量损失情况,并分析了不同处理样品的感官指标和可溶性总糖、粗蛋白、水分及灰分含量。结果表明:冷藏和70~100 Gy剂量辐照均可有效地抑制山药的发芽、减少重量损失率,100 Gy处理贮藏期间的重量损失比70 Gy显著减小,且贮藏期越长,冷藏和辐射处理减少山药重量损失的效果越显著;冷藏和辐照保鲜90 d的山药品质优良,冷藏的保鲜效果优于辐照。

This study aimed to compare the preservation effect of cold storage with irradiation of post harvest the Chinese yam tuber.The effects of cold storage and different irradiation dosages of 60Coγ rays on inhibiting sprouting and reducing weight loss during storage at room temperature were investigated,and the indices of sensory organ,the contents of crude protein,soluble sugar,ash and water of the Chinese yam before and after radiation were compared respectively.The results showed that cold storage and 70~100 Gy rays can effectively inhibit sprouting and reducing weight loss during storage.The effect of 100 Gy rays on inhibiting sprouting and reducing weight loss was more significant than 70 Gy.With the prolonging of storage period,the results of cold storage and irradiation on inhibiting sprouting and reducing weight loss were more remarkable.The quality of and in cold storage was better than irradiated yam tuber.