柑桔(Citrus Reticulata L.)的去脂替代品茉莉酸甲酯Var. Arrayana水果

Carlos Gómez, Anibal Herrera, V. Flórez, H. B. López
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引用次数: 9

摘要

柑橘在哥伦比亚柑橘类水果生产中占很大一部分,在热带地区收获柑橘时,这些产品的采收后去角质以获得色素沉着是一种常见的做法。内源信号分子如茉莉酸甲酯和乙烯在果实形成过程中产生,它们在采后和胁迫反应中起关键作用。后者通常用于去绿柑橘,然而,表现出对这种化合物的低敏感性。因此建立乙烯的脱脂替代品是很重要的。因此,本研究的目的是确定茉莉酸甲酯对柑桔(Citrus reticulata L.)去角质的影响。为此,测定了呼吸速率、失重、显色指数、总叶绿素、总可溶性固形物、硬度和总酸度。处理方法:茉莉酸甲酯(MeJA) 1 μM 24h,乙烯(ET) 1000 ppm 20 min, 1-甲基环丙烯(1- mcp) 0.5 μL L 2h;以及1-MCP + MeJA、1MCP + ET的组合。通常采用MeJA和1-MCP + MeJA处理,在处理实施后14天(DATI)总可滴定酸度的结果最为显著,在4 DATI时总叶绿素和颜色指数的结果最为显著。在MeJA处理下,TSS/酸比(成熟度比)在7 DATI后保持不变。因此,在1-MCP预处理后使用MeJA是一个有趣的去核化选择,尤其是考虑到这些生理反应在以前的研究中没有报道过。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Methyl Jasmonate, a Degreening Alternative for Mandarin (Citrus Reticulata L.) Var. Arrayana Fruits
Mandarin accounts for a significant part of the Colombian citrus fruit production, the postharvest degreening of these products to attain pigmentation being a common practice when they are harvested in the tropics. The endogenous signaling molecules such as methyl jasmonate and ethylene are produced during fruit formation, and they play a key role in postharvest and stress responses. The latter is commonly used to degreen mandarin, which, however, exhibits low sensitivity to this compound. It is therefore important to establish degreening alternatives to ethylene. Thus, the aim of this study was to determine the effect of methyl jasmonate on the degreening of Arrayana mandarin (Citrus reticulata L.). For such purpose, respiration rate, weight loss, color index, total chlorophyll, total soluble solids, firmness and total acidity were determined. The treatments applied were: methyl jasmonate (MeJA) 1 μM 24h, Ethylene (ET) 1000 ppm 20 min, 1-methylcyclopropene (1-MCP) 0.5 μL L 2h; and the combinations 1-MCP + MeJA, 1MCP + ET. Generally obtained with the MeJA and 1-MCP + MeJA treatments, the most significant results took place at 14 days after treatment implementation (DATI) for total titratable acidity, and at 4 DATI for total chlorophyll and color index. The TSS/acid ratio (maturity ratio) became constant since 7 DATI under the MeJA treatment. Thus, the use of MeJA after 1-MCP pretreatment comes to be an interesting degreening option, all the more when considering that these physiological responses have not been reported in previous studies.
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