【摘要】 红香蕉苹果的果皮和果心是两个酚类物质代谢的活跃区域,前者主要合成花色苷,后者合成木质素.采收期不同,虎皮病发病率不一,贮藏到次年3月,早采果61%发病,晚采果仅14%,生化分析表明,早采果果皮中水溶性酚含量、多酚氧化酶活性和花色苷含量分别是晚采果的2倍、1.6倍和35%.更多还原

【Abstract】 Water soluble phenolics(WSP)and anthocyanin content,PPO,PALactivity and superficial scald of apple fruits harvested at diffrent dates(26/8,10/9,25/9)were studied.The results showed that the superficial scaldof fruits had a positive correlation with WSP content and PPO activity,while a negative correlation with anthocyanin content.The WSP,anthocy-anin content and PPO activity were remarkably affected by harvest date offruits.Conpared with the late harvested fruits(25/9)the peel of early har-vested ones(26/8)contained 2-fold WSP,1.6 fold PPO a(?)tivity and 35%anthocyanin which enabled the early harvested fruits to possess a muchhigher browning index(61%)while only 14% in the late harvested oneswhen they were storaged until the tenth of March.更多还原