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首页> 外文期刊>IEEE sensors journal >Determination of Pears Ripening Stages Based on Electrochemical Ethylene Sensor
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Determination of Pears Ripening Stages Based on Electrochemical Ethylene Sensor

机译：基于电化学乙烯传感器的梨成熟阶段的测定

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摘要

Fruit firmness and color as simple, and ethylene emission as more sophisticated, are indicators of fruit maturity. Many studies have reported that 'William' pears generally ripen within 7 days at 20 degrees C after purchase. Usually, this information is based on experiments that were performed in a controlled environment. In reality, at the point of sale, storage time and conditions are not known, neither commercial handling procedures implemented to extend the shelf life after storage. The objective of this study is to implement and evaluate the electrochemical sensor system as a non-destructive approach to measure ethylene, which might be a reliable indicator of overall fruit maturity. Three experiments were performed during 9 days of shelf life at a temperature of 25 degrees C to obtain firmness (N), color parameters (L*, a*, b*), calculate hue angle (h degrees), and ethylene emission of 'William' pears purchased at the local store. Based on firmness, we have defined three ethylene concentration stages (ECS) with distinct ethylene emission rates that were determined by our sensor system (ECS1 - underripe, not ready to eat, ECS2 - ripe, ready to eat, ECS3 - overripe, senescent). The system gives good reproducibility and good correlation to the firmness stages as defined from related work. In general, the employed sensor system can determine ripening stages based on ethylene emission rate that also includes other volatile compounds.
机译：果实坚定和颜色如同简单，乙烯排放更复杂，是果实成熟的指标。许多研究报告称，“威廉”梨在购买后在20摄氏度的7天内成熟。通常，该信息基于在受控环境中执行的实验。实际上，在销售点，储存时间和条件尚不清楚，既不经过商业处理程序都没有实施，以延长储存后的保质期。本研究的目的是实施和评估电化学传感器系统作为测量乙烯的非破坏性方法，这可能是整体果实成熟度的可靠指标。在25摄氏度的温度下在9天内保质期进行三次实验，得到坚固的（n），颜色参数（L *，a *，b *），计算色调角（H度）和乙烯排放'威廉的梨在当地商店购买。基于坚定性，我们定义了三种乙烯浓度阶段（ECS），其由我们的传感器系统（ECS1 - 底伤，未准备吃，ECS2 - 成熟，即可吃，ECS3 - 覆盖，衰老）的不同乙烯排放率（ECS）。 。该系统提供良好的再现性和与相关工作所定义的坚固阶段的良好相关性。通常，所用的传感器系统可以基于乙烯排放率确定成熟阶段，所述乙烯发射率还包括其他挥发性化合物。

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