Postharvest temperature and water status influence postharvest splitting susceptibility in summer radish ( Raphanus sativus L.)

Lockley, R.A., Beacham, A.M., Grove, I.G. and Monaghan, J.M. (2020) Postharvest temperature and water status influence postharvest splitting susceptibility in summer radish ( Raphanus sativus L.). Journal of the Science of Food and Agriculture.

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Abstract

BACKGROUND Splitting is a problem that seriously affects appearance and marketability in a number of fruit and vegetables. In summer radish (Raphanus sativus L.), splitting can occur during growth, harvesting and postharvest. We investigated the factors affecting splitting susceptibility in summer radish cv. Celesta during postharvest handling. RESULTS Splitting susceptibility was negatively related to temperature, with higher temperature reducing splitting due to dropping impact. Radish diameter was positively associated with compression failure force, suggesting that larger radishes are more resistant to compressive splitting. An increase in radish hypocotyl water content (WC) was associated with an increase in splitting susceptibility due to impact and decrease in failure force for both compression and puncture forces. Increased hypocotyl WC may increase splitting susceptibility by increasing the water potential of the radish tissue. In agreement, we found that increased hypocotyl WC was associated with higher internal water potential in radish tissue. CONCLUSIONS We therefore recommend that the hypocotyl WC of summer radish crops be managed during the harvest and postharvest phases, and that crops are processed at higher, ambient, temperature in order to reduce splitting, before storing at low temperature and high humidity to maintain quality and shelf life.

Item Type: Article
Keywords: radish, Raphanus, splitting, temperature, water status, texture analysis, hypocotyl
Divisions: Crop and Environment Sciences
Depositing User: Ms Kath Osborn
Date Deposited: 09 Oct 2020 14:03
Last Modified: 09 Oct 2020 14:03
URI: https://hau.repository.guildhe.ac.uk/id/eprint/17578

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