Chilling injury investigation by non-destructive measuring methods during banana cold storage
香蕉冷藏過程中無損測量方法對冷害的調查
Zsom Tamás，Strohmayer Edina ，Phuong Le Nguyen Lien，Hitka Géza ，Zsom-Muha Viktória
Abstract
Banana is a really chilling injury sensitive product. Its sensitivity to cold temperatures generates serious practical, economical and commercial problems. Chilling injury related physiological responses of Cavendish type green banana samples stored at 2.5, 5, 10 °C and near optimal (15 °C) cold storage temperature were investigated by nondestructive optical methods (surface color and chlorophyll fluorescence measurement, DA-index® evaluation) and by the determination of the physiological reactions (respiration, ethylene production, symptom manifestation) during cold storage and the 8-day long subsequent shelf-life. The positive effects of low temperature storage were proven on mass loss, respiration and ethylene production. In case of bananas stored at 2.5–10 °C, the chilling injury related changes in chlorophyll content related DA-index®, IR-values; Fm and Fv chlorophyll fluorescence values, the L*, a*, b*, C* and hue angle color characteristics suggested clearly from day 3 the onset of chilling injury several days before the visible signs of chilling injury appeared.
香蕉是一種非常耐寒的對傷害敏感的產品。它對低溫的敏感性產生了嚴重的實際，經濟和商業問題。通過無損光學方法(表面顏色和葉綠素熒光測量，DA-index®評估)研究了在2.5、5、10°C和接近(15°C)冷藏溫度下的卡文迪許綠色香蕉樣品與冷害相關的生理反應。 )，并確定冷藏期間和隨后8天的貨架期后的生理反應(呼吸，乙烯生成，癥狀表現)。低溫存儲的積極作用已被證明對質量損失，呼吸作用和乙烯生成有影響。如果香蕉在2.5–10°C下儲存，則冷害引起的葉綠素含量變化與DA-index®相關，IR值；Fm和F v葉綠素熒光值，L *，a *，b *，C *和色相角顏色特征從第3天開始明顯出現冷害開始，直到出現明顯的冷害跡象。
Keywords: chlorophyll fluorescence, DA-index®, respiration, ethylene, low temperature
關鍵字： 葉綠素熒光，DA-index®，呼吸，乙烯，低溫
