Studies on the ripening of Mango (Mangifera indica L.) cv. Dashehari by ethephon and calcium carbide
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Date
2011
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Publisher
CCSHAU
Abstract
An expriement was conducted to compare the ripening caused by ethephon (source of natural
ripening hormone, ethylene) and calcium carbide (source of acetylene and applied commercially) in
mango fruits as compared to control. Physiological loss in weight increased with increase in the period
of storage in all the treatments. There was no decay loss up to 6th day, however it was observed on 8th
day of storage in all the treatments and further it increasd on 10th day of storage. Fruits treated with
calcium carbide had higher physiological loss in weight, decay loss, sugars and total soluble solids as
compared to fruits ripened with ethephon. However, acidity, ascorbic acid, cellulose and pectin content
of fruits were lower in calcium carbide treated fruits as compared to fruits ripened with ethephon.
Sugars (total, reducing and non-reducing) and total soluble solids increased with increase in
period of storage up to 4th and 6th day of storage respectively in all the treatments and decreased
thereafter whereas cellulose, pectin, acidity and ascorbic acid decreased with increase in the period of
storage in all the treatments. Among the different treatments, calcium carbide @ 3g/kg was highly
effective in increasing decay loss, total soluble solids and sugars and decreasing acidity, ascorbic acid,
pectin and cellulose content. Fruits ripened with ethephon @ 250 ppm showed better ripening and
sensory qualities.
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Keywords
Mangifera indica, Ethephon, calcium carbide, Ripening, Physiological loss in weight, Decay loss, Acidity, Ascorbic acid, Sugars, Total soluble solids.