National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The investigation was planned and executed to study the influence of various concentrations of antioxidants (Ascorbic acid, AA 500, 750 and 1000 ppm and Benzyl adenine, BA 50, 100 and 150 ppm) with alkaline emulsion of ethyl oleate (AEEO, 2.4% K2CO3 + 1.5% ethyl oleate) as a pre-drying treatment on rate of drying, drying ratio (grape: raisin), yield and colour of raisins prepared from seedless varieties of grapes. The Selected grape bunches of seedless varieties Thompson Seedless (TS), 2A Clone (2AC), Sonaka (SO), Manik Chaman (MC) and Merbein Seedless (MS) were dried in ventilated rooms after pre-drying treatment. Results showed that the raisins prepared by using AEEO with AA 1000 ppm as pre-treatment showed lowest brown and mixed colored raisins, and correspondingly increased percentage of green colored raisins. The berries dried early in variety MS and it takes only 13.64 days followed by 2AC, TS, MC and SO in order. The raisins prepared from variety TS were superior compared to others in terms of drying ratio, raisin yield, raisin waste, average raisin weight. From this finding it can be concluded that the raisins prepared from Thompson Seedless by using alkaline emulsion of ethyl oleate with ascorbic acid 1000 ppm was superior to other varieties.
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