Advances in value addition of horticultural crops: postharvest shelf-life extension, clean-label preservation, minimally processed products, and by-product valorization : Advances in value addition of horticultural crops

Saravanan Raju

Authors

Raju Saravanan ICAR-Central Tuber Crops Research Institute

Keywords:

Postharvest quality retention, Clean-label preservation, Minimally processed horticultural products, Smart and active packaging, , By-product valorisation

Abstract

India’s horticulture sector is expanding rapidly, yet substantial value is lost through postharvest deterioration and quality downgrading within fresh supply chains. This review synthesises science-based pathways for value addition in Indian horticultural crops, focusing on major fruits and vegetables such as mango, banana, tomato, and onion, as well as high-value spices. Roots and tubers are considered within the broader horticultural context. The review integrates the mechanistic basis of postharvest losses, including respiration, ripening, water loss, browning, pigment instability, microbial spoilage, and mechanical injury, with practical strategies for preservation and processing. It examines quality-retention approaches for minimally processed produce, including harvest maturity management, pre-cooling, maintaining a cold-chain, using modified atmosphere packaging, applying edible coatings, using clean-label antimicrobials, and exploring alternative sanitisation methods. Value-addition is also highlighted through fresh-cut, RTC/RTU, dehydrated, and fermented products, as well as through valorising by-products into functional ingredients and sustainable packaging materials. A matching framework aligns perishability with feasible technologies across farm-gate, FPO/MSME, and industrial scales. Key research priorities include predictive shelf-life models, matching packaging with produce, validating clean-label sanitation, developing energy-efficient cooling, and supporting by-product valorization with safety and techno-economic evidence.

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Advances in value addition of horticultural crops: postharvest shelf-life extension, clean-label preservation, minimally processed products, and by-product valorization