貯蔵温度がじゃがいも塊茎の萌芽,呼吸量糖含量及びポリフェノールオキシダーゼ活性に及ぼす影響

概要

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Potato tubers were stored at 4°, 20°, or 33℃, and the sprouting time, respiration rate, sugar content, and polyphenol oxidase activity were examined. Sprouting was observed after about 70 days of storage at 20℃ but was not found when storage was at 4 or 33℃ after 160 days. Tubers transferred to 33℃ after 70 days of storage at 20℃ did not sprout during the next 160 days. When tubers were stored at 33℃ for 42 days and then trasferred to 20℃, sprouting was observed after 27 days. The respiration rates of potato tubers stored at 4° or 20℃ were low. At 33℃, the respiration rate was initially high, but decreased during storage. The total sugar content of tubers stored at 22℃ was low. At 4°or 33℃, however, this content increased rapidly to about 2%. The reducing-sugar content of tubers stored at 33℃ was lower than when storage was at 4℃. Polyphenol oxidase activity in potato tubers stored at 20℃ increased twofold during storage, but rapidly decreased during storage at 33℃.
社団法人日本農芸化学会の論文
1995-03-01