香蕉果實寒害之化學藥劑防治試驗

Effects of Chemical Treatments on the Chilling Injury of Detarched Banana Fruit

多酚氧化酵素（polyphenol oxidase）之抑制劑及還原劑處理採後香蕉果實，可減緩果實維他命C之降低並促進可溶性單寧之分解，因而提高低溫貯藏中之抗寒力。2-ME, 2-MBT, DMS, SDT，草酸、硫脲EDTA及Alar等抑制劑；維他命C，硫代硫酸鈉還原劑；硫酸鈣及甘油等細胞膜完整性維護劑；N6-BA等細胞活化劑及TBZ等均有減輕香蕉果實貯藏中受寒害之效果。減壓貯藏（220mmHg）下不會減輕寒害且各藥效不顯。以高溫處理打斷連低溫，可減輕寒害且藥效更明顯。

The object of this experiment is to find out effective chemicals, chemical treatment methods, and storage conditions to improve the chilling tolerance of detached banana fruits. Polyphenol oxidase inhibitors and antioxidants could delay the decrease of ascorbic acid content in pulp and accerate the decrease of thannin content in peel. Polyphenol oxidase inhibitors (2-Mercapto-ethanol, 2-Mercapto benzothiazol, Dimethyl sulfoxide Sodium diethyl dithiocarbamate, Thio urea. Oxalic acid, EDTA, Tea, Phenol, Alar); antioxidants (Ascorbic acid; Na3S2O3); membrane intergrity protectors (Ca So2 glycerol) and cell activator (N6-BA) could enhance chilling tolerance of banana fruits And, TBZ could ameliorate chilling in addition to its effect as a fungicide Chilling injury could not be alleviated in hypobaric storage and chemical effects were not significiant. But alternating temperatures could lessen chilling injury.