Effect of surface coatings on storage life and quality of Baramasi lemon (Citrus limon L. Burm) fruits
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Date
2017
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Punjab Agricultural University, Ludhiana
Abstract
The present investigations entitled “Effect of surface coatings on storage life and quality of
Baramasi lemon (Citrus limon L. Burm) fruits” was carried out during 2017 in the Postharvest
laboratory, Department of Fruit Science, Punjab Agricultural University, Ludhiana.
Mature light green, uniform and healthy fruits of winter crop of Baramasi lemon cv. PAU
Baramasi lemon 1 were coated with the chitosan (0.25,0.50, 0.75 %), carboxymethyl cellulose
(0.25, 0.50, 0.75 %) and Aloe vera gel (0.25, 0.50, 0.75 %). Coated fruits were stored under
low temperature conditions (11±1°C, 90-95% RH) for 60 days. Fruits were analyzed after 15,
30, 45 and 60 days for various physico-chemical characters. Results revealed that
physiological loss in weight (PLW), spoilage, total soluble solids, total sugars, reducing
sugars, non-reducing sugars increased with the advancement of storage period. Whereas peel
thickness, peel percentage and vitamin-C content showed a declining trend with the extension
of storage period. Other parameters like juice percentage and titratable acidity (TA) showed
an increasing trend during initial stage of storage, but at the end of storage a decline was
observed. Chitosan @ 0.75 % was highly effective to extend the storage life of Baramasi
lemon fruits (winter crop) under low temperature storage conditions. Chitosan @ 0.75 %
maintained the acceptable quality of baramasi lemon fruits up-to 45 days at low temperature
storage by reducing physiological loss in weight, spoilage and maintaining high peel
thickness, peel content, juice content, TSS, acidity, vitamin- C content and sugars.
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