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Physiological Changes
However, black heart (BH) disorder and post harvest diseases will shorten the storage life of fruits at low temperature. BH, a physiological disorder, is considered the most critical problem in most pineapple producing countries including Australia, Philippines, the United States (Hawaii), Taiwan and Cote d’Ivoire. When pineapple fruits are exposed to low temperatures either in storage or in surrounding environment, characteristic symptoms of watery spots at the base of the fruitlets appear and these enlarge as severity increases. The symptoms are not detectable externally unless the fruits are cut and the flesh exposed. The disorder is induced at 5-20ºC, which covers the recommended temperature range for storage of pineapple.