Postharvest application of AVG and 1-MCP enhance quality of ‘Kinnow' mandarin during cold storage
Journal Title: International Journal of Farming and Allied Sciences - Year 2015, Vol 4, Issue 6
Abstract
Fruit tissue softening and decline in fruit quality are two postharvest shelf life limiting factors, which are due to mechanical damages during transportation and high respiration along with water loss respectively. Ethylene accelerates these effects, but plant bioregulators such as 1-methylcyclopropene (1- MCP) and aminoethoxyvinyl glycine (AVG) have been developed to mitigate its effect. 1-MCP is an ethylene action inhibitor and AVG acts as an inhibitor to the biosynthesis of ethylene. The goal of this project was to evaluate the effectiveness of AVG and 1-MCP for maintaining fruit quality and enhancing storage life in ʻ Kinnowʼ mandarin (Citrus reticulate Blanco). The effects of two different AVG doses (250 and 500 mg L-1) and 1-MCP at 1 µL L-1 concentration, after harvest in 15-day and 30-day cold storage were investigated. In order to carry out this investigation the two different AVG doses and 1-MCP were applied on fruit firmness, chilling injury, natural decay, weight loss, total soluble solids content (TSS), titrable acidity (TA), vitamin C content and total antioxidant activity (TAA) of mandarins. Fruits treated with AVG (250 mg L-1) along with 1-MCP (1 mg L-1) resulted in minimum incidence of chilling injury, decay and weight loss and significant increase in fruit firmness, TSSC, TA, vitamin C content and TAA both in 15-day and 30-day cold storage. The highest chilling injury, natural decay and weight loss and the lowest TSSC, TA, vitamin C content and TAA were recorded in no treated mandarins.
Authors and Affiliations
Vahid Tavallali, Marzieh Maleki Moghadam
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