PHYSIO-CHEMICAL CHANGES DURING POST HARVEST HANDLING OF ONION (Allium cepa L.)–A REVIEW

DOI: 10.5958/0976-0741.2014.00909.X    | Article Id: R-1399 | Page : 225-232
Citation :- PHYSIO-CHEMICAL CHANGES DURING POST HARVEST HANDLING OF ONION (Allium cepa L.)–A REVIEW.Agricultural Reviews.2014.(35):225-232
Shivakumar* and Chandrashekar S.Y. sbgajre@gmail.com
Address : K.R.C. College of Horticulture, Arabhavi, Gokak tq., Belgaum-591 218, India

Abstract

Harvested onion bulbs under goes several physio-chemical changes like increase in respiration, physiological loss in weight (PLW), rotting and sprouting. Chemical changes in stored of onions include dry matter content, pungency, abscisic acid and fructans concentration. The seasonal differences were observed in the weight of the onions, dry matter content, glucose and total carbohydrates. Even some of  the pre-harvest cultural practices like nutrition, maturity, growth regulator spraying etc and also post harvest curing would extend shelf life of onion bulbs. Onion storage in ventilation condition is satisfactory when the temperature is maintained between 25oC to 30oC with a relative humidity 65 to 70 per cent.

Keywords

Ascorbic acid Onion PLW Pyruvic acid Storage.

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