Abstract
Nepal produces large quantity of mandarin (Citrus reticulata Blanco) annually but faces big losses due to improper postharvest treatments. The experiment was carried out during 2012-2013 with the objective of assessing the effect of different postharvest treatments on quality and shelf life of mandarin. The postharvest treatments were: wax emulsion at 10%, bavistin at 0.1%, wax at 10% with bavistin at 0.1%, calcium chloride at 1%, Jeevatu at 5% along with untreated fruits as a control. The experiment was conducted for four weeks of storage at ambient condition in Nepal Agricultural Research Council, Khumaltar, Kathmandu. Wax in combination with bavistin was found as the most effective in reducing the physiological loss in weight, whereas bavistin proved to reduce decay loss up to four weeks of storage. The fruits treated with wax alone and with combination of bavistin retained maximum firmness, juice percentage, vitamin C and palatability rating during the storage. The minimum total soluble solid and maximum titrable acidity were recorded in the fruits treated with wax plus bavistin. The present findings indicate that mandarin can be stored up to four weeks when treated with wax as well as wax with bavistin in the condition with 14˚C - 18˚C temperature and 45% - 73% relative humidity.
Highlights
Mandarin (Citrus reticulata Blanco) is a most promising fruit crop that stands in first position of the total fruitHow to cite this paper: Rokaya, P.R., Baral, D.R., Gautam, D.M., Shrestha, A.K. and Paudyal, K.P. (2016) Effect of Postharvest Treatments on Quality and Shelf Life of Mandarin (Citrus reticulata Blanco)
Physiological loss in weight (PLW) was significantly increased in all the treatments with the advancement of the storage period and the increasing trends in the weight loss percentage was found maximum in the fruits with untreated as a control in each week up to the 4th week of storage period
Minimum percentage of Physiological Loss in Weight (PLW) was observed in the fruits treated with wax in combination with bavistin in all the weeks during storage and the losses ranged from 3.02% in the 1st week to 9.81% in the 4th week which was statistically at par with the findings of wax 10% (3.09 to 10.18%) whereas maximum weight loss was recorded in the fruits with control (6.41% to 21.41%) during the storage (Table 1)
Summary
Mandarin (Citrus reticulata Blanco) is a most promising fruit crop that stands in first position of the total fruitHow to cite this paper: Rokaya, P.R., Baral, D.R., Gautam, D.M., Shrestha, A.K. and Paudyal, K.P. (2016) Effect of Postharvest Treatments on Quality and Shelf Life of Mandarin (Citrus reticulata Blanco). (2016) Effect of Postharvest Treatments on Quality and Shelf Life of Mandarin (Citrus reticulata Blanco). The prevalence of high inoculums of pathogens in the orchards due to poor plant protection measures besides non-adoption of scientific harvesting, handling, transit, storage, and antimicrobial treatments leads to heavy losses of fruits after harvest [8]. Nepal faces big losses of mandarin annually due to not adopting proper postharvest handling practices during harvesting, transportation and storage. To minimise these postharvest losses and to maximise the quantitative and qualitative parameters along with prolongation of storage capacity, postharvest treatments with wax and other safe fungicides are urgent for effective marketing of mandarin in the country
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