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Efficacy of Edible Chitosan Formulation in Quality Maintenance and Shelf Life of Guava (Psidium guajava L.) Fruit During Cold Storage

Efficacy of Edible Chitosan Formulation in Quality Maintenance and Shelf Life of Guava (Psidium guajava L.) Fruit During Cold Storage

Amina, Muhammad Zahid Rashid and Amina Rashid

1Horticultural Research Institute, Faisalabad; 2Department of Agronomy,University of Agriculture Faisalabad, Pakistan. 

 
*Correspondence | Muhammad Zahid Rashid, Horticultural Research Institute, Faisalabad, Pakistan; Email: uafzahid@gmail.com 

ABSTRACT

Guava is crop of tropical and subtropical regions, but the consumption time is three or four days, so it cannot be sold in a distant market. This trial was carried out to investigate the role of chitosan coating on partially mature guava to retain good quality and prolong shelf life in cold (11°C). Different chitosan concentrations i.e. 20% 30% and 40% were coated and stored at 11°C temperature. These fruits were compared with control (non-treated) fruit after 15 days. It was observed that the fruits coated with 40% chitosan showed minimum weight losses of 18.66% at cold storage (11°C) respectively as compared to control where weight losses were 34.50% at cold storage respectively. Treated fruits were firmer (41.67 N) after 15 days storage period as compared to control. Fruit chilling injury percentage was also minimum at cold storage (12.67%) in fruits coated with 40%. All the treatments exhibited potential to maintain the post-harvest life of fruits as compared to untreated fruits. These were found effective in quality attributes such as TSS, titratable acidity, total sugars, total phenolic compounds as well as antioxidants.

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Sarhad Journal of Agriculture

November

Vol. 39, Sp. Iss. 2

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