University of São Paulo, Department of Food Science and Experimental Nutrition, FCF, São Paulo, Brazil.
University of São Paulo, Department of Food Science and Experimental Nutrition, FCF, São Paulo, Brazil; Food Research Center (FoRC-CEPID), São Paulo, Brazil.
Food Res Int. 2018 Mar;105:384-392. doi: 10.1016/j.foodres.2017.11.007. Epub 2017 Nov 10.
Brazil is a major producer and consumer of various banana types. Thap Maeo is a promising cultivar for the market due to its resistance to Black and Yellow Sigatoka disease. However, a lack of information and postharvest technologies concerning Thap Maeo physiology seems to be a significant problem limiting its expansion in the market. Thus, this study aims to establish Thap Maeo fruit's physical, biochemical, and physiological aspects, defining the best ethylene dosage for treatment considering fruit ripening parameters. Bananas were harvested and monitored during both natural and ethylene-induced ripening processes. Assessments of pulp firmness, peel color and endogenous ethylene production showed different profiles between ethylene-treated and non-treated fruits, whereas the ethylene responses concerning the carbohydrates and hormones profiles, as well as the ethylene receptors expression, were observed in all ethylene-treated fruits, even applying low concentrations of the hormone. It thus indicated the high ethylene-sensitivity of Thap Maeo cultivar. Such postharvest behaviors reverberate in lower ethylene requirements for treatment, which was established at 10μLL. Ethylene-inducible changes in fruit volatile compounds throughout ripening are also discussed.
巴西是各种香蕉类型的主要生产国和消费国。由于其对黑星病和黄曲叶斑病的抗性，Thap Maeo 是一种有前途的市场品种。然而，由于缺乏有关 Thap Maeo 生理学的信息和采后技术，这似乎是限制其在市场上扩张的一个重大问题。因此，本研究旨在建立 Thap Maeo 果实的物理、生化和生理方面的特征，确定最佳的乙烯剂量，以考虑果实成熟参数进行处理。香蕉在自然和乙烯诱导的成熟过程中进行了收获和监测。果肉硬度、果皮颜色和内源乙烯产生的评估显示，乙烯处理和未处理果实之间存在不同的特征，而碳水化合物和激素特征以及乙烯受体表达的乙烯反应在所有乙烯处理的果实中都观察到，即使施加低浓度的激素也是如此。这表明 Thap Maeo 品种对乙烯高度敏感。这种采后行为反映在较低的处理乙烯需求上，确定处理的乙烯浓度为 10μLL。还讨论了通过成熟过程中诱导的果实挥发性化合物的乙烯诱导变化。
