Pre-harvest application of hexanal formulations for improving post-harvest life and quality of mango ( Mangifera indica
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ORIGINAL ARTICLE
Pre-harvest application of hexanal formulations for improving post-harvest life and quality of mango (Mangifera indica L.) cv. Dashehari Kirandeep Kaur1 • Gagandeep Kaur1 • Jaswinder Singh Brar1
Revised: 2 October 2019 / Accepted: 23 April 2020 Ó Association of Food Scientists & Technologists (India) 2020
Abstract The highly perishable nature of the mango fruit which leads to quick deterioration in quality is the major limiting factor for mango growers of north India. Studies were, therefore, planned to determine the role of ‘enhanced freshness formulation’ (EFF) having hexanal as the main component in extending the storage life and quality of mango fruits of cultivar Dashehari. Aqueous formulations of hexanal are known to retard the activity of phospholipase-D thereby increasing the shelf-life and quality of stored fruits. Mango trees were given pre-harvest sprays of hexanal @800 lM, 1200 lM, 1600 lM and 2000 lM at 30 and 15 days before harvesting of the fruit. After harvest at physiologically mature stage, fruits were stored in walkin-cool chambers at a temperature of 12 ± 2 °C and 85–90% relative humidity. These fruits were analysed for different physiological and biochemical parameters at weekly intervals till the stipulated storage period of 35 days. The results of the research revealed that the hexanal treatments widened the storage period of fruits while maintaining their freshness in comparison to the untreated mango fruits. Hexanal formulation @1600 lM significantly reduced the decay incidence, pectin methyl esterase activity and respiratory rate of mango fruits. These fruits also exhibited increased firmness, total soluble solids, acidity and maintained acceptable palatability up to 28 days of storage. The lower doses of EFF did not showed significant effect in expanding the storage span of fruits beyond 21 days while the higher dose of hexanal @2000 lM did not showed a significant enhancement in & Kirandeep Kaur [email protected] 1
Department of Fruit Science, Punjab Agricultural University, Ludhiana 141014, India
quality and storage life of mango fruits in comparison to hexanal @1600 lM. Keywords Pre harvest sprays Hexanal formulations Mango Respiration rate Fruit quality
Introduction Mango (Mangifera indica Linn.) is a predominant fruit crop which is liked all over the globe due to its excellent aroma and flavour. India is the largest mango producing country in the world due to large area under mango. The production of mangoes was to the tune of 18,642 thousand metric tons from an area of 2208.56 thousand hectares (Indian Horticulture Database 2017). Dashehari is a popular cultivar of north India because of its high yielding capacity and excellent fruit quality. The fruit of this variety is mainly harvested in July month when the temperature and humidity is very high. Moreover, mango being a climacteric fruit needs to be harvested at proper stage of maturity to reduce the postharvest losses. A number of pre and post-harvest factors directly or indirectly affect the qual
