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 |
In India, presently about 35 to 40 per cent of the onion is estimated to be lost as post-harvest losses during various operations including handling and storage. Serious losses occur during storage due to sprouting and rotting. Keeping this in view, an investigation was carried out to study the effect of different packing and storage methods on storage life of aggregatum onion cv. CO on 5. This experiment was conducted at Department of Vegetable Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during 2008-2010 and laid out in factorial completely randomized design (FCRD) with eight treatments and three replications. Pre-harvest spray with growth inhibitors and fungicides were given. The pre-harvest sprayed onion bulbs were harvested, cured and subjected to different packing and storage methods. Among the different packing and storage treatments, the lowest physiological loss in weight (5.18 %), sprouting (0.62 %), rotting (0.64 %), rooting (0.00 %), total loss (6.78 per cent) and quality parameters viz., TSS (17.22 ï‚°Brix), ascorbic acid (10.24 mg 100 g-1), pyruvic acid (2.53 µmol g-1), sulphur content (0.704 %), total phenolics content (625.56 µg g-1), phenylalanine ammonia lyase activity (6.86 µg ml-1min-1), peroxidase activity (1.825 absorbance g-1min-1) and polyphenol oxidase activity (1.321 absorbance g-1min-1) were observed and bulbs in ventilated room temperature storage method. The harvested bulbs stored under low cost bottom ventilated storage structure realized maximum shelf life (up to 6 months) compared to spreading of bulbs in room temperature.
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