Chilling Injury Of Fruits And Vegetables
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Chilling insensitive fruits such as apple and pear have much lower critical temperatures around 00c.
Chilling injury of fruits and vegetables. The chilling injury of the fruits during storage was qualitatively determined based on visual observation using a numerical rating scale of 1 4 1 no chilling injury 2 slight chilling injury 3 moderate chilling injury 4 severe chilling injury. The critical temperature for occurrence of chilling injury was 5ºc for prata banana and 10ºc for nanica banana. 3 enhancement of the antioxidant system activity.
Langra fruit at 5 1 ºc and if no technology is available for alleviation of chilling injury it may be stored at. The disease incidence was calculated zhang et al. The cellular events of chilling injury can be separated into primary and secondary events.
Chilling injury is what happens to some vegetable crops of tropical origin held at the wrong storage or transit temperature but a temperature above 32 f 0 c. Occurrence and economic impact chilling injury presents a major problem in the postharvest handling of tomato fruit and other produce since it precludes both the cold storage of mature green fruit which could be ripened at a later date and subsequently used for fresh con sumptiodprocessing and extension of the growing season into colder. It was concluded that chilling injury occurs after 10 days in mango cv.
Some crops of temperate zone origin are also susceptible. Most crops of tropical and subtropical origin are sensitive to chilling injury. 2 enhancement of heat shock protein gene expression and accumulation.
At these temperatures the tissues weaken because they are unable to carry on normal metabolic. Surface pitting is the most common form of chilling injury in many tropical and subtropical fruits and vegetables. Chilling injury occurs at temperatures well above freezing point.
Membrane damage and reactive oxygen species production are multifarious adverse effects of chilling as oxidative stress in sensitive fruits and vegetables. These crops are injured by low but nonfreezing temperatures. Pitting can occur on citrus fruits cucumbers eggplant melons okra papayas pomegranates sweet peppers sweetpotatoes and tamarillos.