Effect of Postharvest Application of Putrescine on Shelf Life and Quality of Guava Fruit cv. Hisar Safeda under Cold Storage Conditions

Abstract

Daksh Parashar and Maninderjit Singh

Guava (Psidium guajava L.) cv. Hisar Safeda is a commercially important tropical fruit known for its high nutritional value but suffers from rapid postharvest deterioration. Uniform, bruise-free and disease-free fruits were harvested and treated with putrescine (0.5, 1.0, 2.0, 3.0 and 4.0 mM), while untreated fruits served as control. The treated fruits were packed in corrugated fiber board (CFB) boxes lined with paper and stored at 6°C with 85–90% RH. Physical and biochemical parameters were recorded at 5 days of interval during cold storage Results demonstrated that 2.0 mM putrescine was most effective in maintaining fruit quality, showing significantly lower physiological weight loss (10.08%), spoilage, higher fruit firmness, and superior preservation of chlorophyll content compared to control treatment. The study concludes that postharvest application of 2.0 mM putrescine significantly extends storage life and maintains quality parameters of guava cv. Hisar Safeda under cold storage conditions

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