辐照生姜的贮藏性状研究

8 0～ 2 5 0Gyγ射线辐照处理生姜 ,可以导致生姜贮藏初期Vc损失 ,但辐照处理能够抑制生姜的发芽和呼吸代谢作用 ,从中长期贮藏的角度来看 ,反而有利于Vc含量的维持。辐照处理还引起生姜贮藏过程中还原糖含量的增加 ,以 1 5 0和 2 5 0Gy剂量处理升高幅度最明显。2 5 0Gy辐照处理使生姜蛋氨酸和精氨酸含量明显下降 ,但对其余 1 6种氨基酸含量影响较小。生姜受到辐照后 ,短期内出现呼吸高峰 ,然后呼吸强度迅速下降 ,并维持在较低水平。 80～40 0Gy剂量辐照处理使生姜根茎肉质部电解质渗透率升高 ,但同样剂量的辐照没有引起生姜组织酯酶同工酶酶谱的变化

STUDY ON THE STORAGE PROPERTIES OF IRRADIATED GINGER

The γ-ray irradiation could cause the loss of Vc during the early stage of storage ,however, after 150 days’storage there were no significant differences of Vc content between irradiated and non-irradiated samples.The content of reduced sugar was increased by irradiation especially with 150 and 250Gy .When ginger were irradiated with 250Gy and stored at room temperature for 120 days ,the content of Met and Arg decreased obviously,but the contents of other 16 amino acids were not affected .The respiration rate of irradiated ginger reached its peak at 7～9 days of storage, and from then it kept lower level for the rest storage time.The electrolyte permeability increased slightly after γ- irradiation.Irradiation with 80～400Gy had no effects on lipid isoenzyme zymogram.