Jawandha, S. K.Jaskirat Singh2017-12-202017-12-202017http://krishikosh.egranth.ac.in/handle/1/5810037944The 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.ennullThesis