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| 1-MCP处理对采后大荔黄花菜保鲜效应及作用机理分析 |
| Preservation Effects and Mechanisms of 1 Methylcyclopropene Treatment on Postharvest ‘Dali’ Daylily |
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| DOI： |
| 中文关键词: 大荔黄花菜 1-甲基环丙烯 保鲜 超氧化物歧化酶活性 可溶性固形物 |
| 英文关键词:‘Dali’ daylily 1-methylcyclopropene Postharvest preservation Superoxide dismutase activity Soluble solids |
| 基金项目:2022年度渭南市重点研发计划项目“ 1 MCP 延缓大荔黄花菜采后生理后熟衰老的机制研究”（WZYKJ2022 4）；渭南职业技术学院2023年度院级科研一般项目“不同浓度的 1 MCP 处理对采后大荔黄花菜的保鲜研究”（WZYYZ202318）。 |
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| 中文摘要: |
| 为了改善黄花菜的保鲜储存效果，延缓黄花菜的成熟和衰老，本研究以新鲜黄花菜为原料，选择1-甲基环丙烯对采后黄花菜进行保鲜处理，从多个考核指标分析了1-甲基环丙烯对黄花菜的保鲜效应。研究发现，1-甲基环丙烯的处理可有效改善黄花菜的感官特性，28 d后样品的感官特性评分均高于商品界限评分，腐烂率均低于0.6。1-甲基环丙烯的使用可有效抑制黄花菜水分蒸发、减缓代谢效率；1.00 μL/L浓度下，黄花菜样品的失重率仅3.946%。同时，该保鲜措施可有效维持黄花菜样品的可溶性固形物、维生素C以及可滴定酸含量，1.00 μL/L浓度实验组的营养物质含量与其他组相比存在极显著差异（P<0.01）。此外，1-甲基环丙烯处理后的黄花菜抗氧化防御能力较强，并有效降低了活性氧的积累。 |
| 英文摘要: |
| To improve postharvest preservation and storage quality and to delay the ripening and senescence of daylily, fresh ‘Dali’ daylily was treated with 1-methylcyclopropene (1-MCP). The preservation effects of 1-MCP on daylily were evaluated using multiple quality indices. The results showed that 1-MCP treatment significantly improved the sensory quality of daylily. After 28 days of storage, sensory scores of all treated samples remained above the commercial acceptability threshold, and the rot rate was lower than 0.6%. 1-MCP treatment effectively inhibited moisture loss and reduced metabolic intensity in daylily. At a concentration of 1.00 μL/L, the weight loss rate of daylily samples was only 3.946%. In addition, 1-MCP treatment effectively maintained the levels of soluble solids, vitamin C, and titratable acidity in daylily samples. The nutrient contents in the 1.00 μL/L treatment group were significantly higher than those in the other groups (P < 0.01). Furthermore, 1-MCP treated daylily exhibited enhanced antioxidant defense capacity and significantly reduced the accumulation of reactive oxygen species. These results indicate that 1-MCP treatment effectively delays postharvest senescence of daylily and has significant potential for extending shelf life during storage. |
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