Effects of aqueous 1-methylcyclopropene (1-MCP) on postharvest quality of carrots were evaluated
by comparing to gaseous 1-MCP and modified atmosphere packaging (MAP) treatments. After
washing with tap water, carrots were distributed into 4 batches the first of which was subject to
aqueous 1-MCP application, the second to gaseous 1-MCP application, the third to MAP and the
fourth left non-treated as control. The carrots were put into clamshell polyethylene terephthalate
containers apart from MAP-treated ones, and stored 23 ± 1°C for 10 days. During the period of
storage, the carrots were assessed by tracking weight loss, firmness, color, headspace gas
composition, total soluble solids, pH, titratable acidity, carotenoid content and decays. The results
indicated that gaseous 1-MCP application may have a potential for impeding postharvest quality
losses by restricting decay ratios for carrots held in room temperature. Aqueous 1-MCP and MAP
applications were however found to be ineffective for arresting or delaying postharvest quality losses.
Department of Horticulture, Bingol University, Bingol, Turkey.
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