Effect of some Postharvest Treatments on Quality and Storability of Lettuce during Cold Storage | ||||
| Egyptian Journal of Horticulture | ||||
| Volume 52, Issue 1, April 2025, Page 85-100 PDF (619.99 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejoh.2025.364428.1282 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sherin Atala; Neama Hussein; Safaa Zakaria 
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| Department of Postharvest and Handling of Vegetable Crops, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt. | ||||
| Abstract | ||||
| Lettuce heads (Lactuca sativa L.) cv. Iceberg were harvested at a suitable maturity stage of marketing in the 2024 and 2025 seasons to study the impact of some postharvest treatments [chitosan (CS) at 1% and carboxymethyl cellulose (CMC) at 1% separately and each of them in combination with L-cysteine (L-Cys) at 1% and ascorbic acid (AsA) at 5%], besides an untreated control (spray with distilled water), on preserving quality and enhancing storability of lettuce heads during storage at 0°C and 95% relative humidity for 16 days. The obtained results revealed that all postharvest treatments were the most effective treatments in preserving head quality attributes, controlling the discoloration of heads, and overall appearance of lettuce heads in comparison with untreated control. However, lettuce heads treated with CMC at 1% + L-Cys at 1% were the most effective treatment in lowering weight loss percentage, discoloration, phenylalanine ammonia-lyase activity, polyphenol oxidase activity, and maintained quality attributes (firmness, ascorbic acid content, TSS, and total phenols) and gave an excellent appearance after 16 days of storage at 0°C. | ||||
| Keywords | ||||
| Lettuce heads; Carboxymethyl cellulose; Chitosan; L-cysteine; Ascorbic acid; Quality; Cold storage | ||||
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