Effect of post-harvest temperature of tomato ‘Rinka 409’ on quality and autofluorescence during overripening
Effect of post-harvest temperature of tomato ‘Rinka 409’ on quality and autofluorescence during overripening
复制标题
番茄‘Rinka 409’采后温度对过熟过程中品质和自发荧光的影响
DOI：
10.1088/1755-1315/924/1/012020
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Kuramoto M
中科院分区：
文献类型：
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作者：
Konagaya K;Takahashi N;Fukugaichi S;Morimatsu K;Kuramoto M
日本番茄品种"Rinka 409"适合在完全成熟阶段收获，因为它在该阶段保持坚固，从而延长货架期。然而，很难估计质量变化，因为它的颜色在完全成熟阶段后不会改变。对于‘桃太郎’，我们以前提出了一种基于荧光的过熟指示剂，然而，它是否适合另一个品种‘林卡409’，以及它与温度和品质的关系还不清楚。因此，在本研究中，我们研究了这种基于荧光的指数用于上述目的的适当性。2021年，将2020年种植的45株番茄苗在全熟期采收，用于试验。评价重量损失和硬度以确定番茄的质量。收获后温度设定为10、17和25 ℃。结果表明，失重率呈线性增加，而硬度呈指数下降。对于这些性质的非破坏性估计，分别在250 - 460 nm和280 - 750 nm范围内测量激发和发射的激发-发射矩阵（EEM）。‘Rinka 409’分别在400 nm/620 nm的激发/发射处显示出强的荧光发射，而与天数和温度无关。荧光强度以及硬度呈指数下降。因此，在它们之间观察到线性关系。利用该方法，可以用一个比以往研究更简单的线性回归模型来估计“林卡409”的硬度。
Japanese tomato cultivar'Rinka 409'is suitable for harvesting at a fully ripe stage since it remains firm at the stage, resulting in longer shelf life. However, it is difficult to estimate the quality change because its color does not change after the fully ripe stage. For'Momotaro,'we previously proposed a fluorescence-based indicator of overripening; however, its suitability for another cultivar,'Rinka 409', and its relationship with temperature and quality were unclear. Therefore, in this study, we investigated the appropriateness of this fluorescence-based index for the above purposes. In 2021, 45 tomato seedlings planted in 2020 were harvested at the fully ripe stage and used for experiments. Weight loss and firmness were evaluated to determine the quality of the tomatoes. The post-harvest temperatures were set as 10, 17, and 25 C. The results showed that the rate of weight loss increased linearly, whereas the firmness decreased exponentially. For non-destructive estimation of these properties, the excitation-emission matrix (EEM) was measured in the range of 250–460 nm and 280–750 nm for the excitation and emission, respectively.'Rinka 409'showed a strong fluorescence emission at 400 nm/620 nm of the excitation/emission, respectively, regardless of days and temperature. The fluorescence intensity, as well as the firmness, decreased exponentially. Thus, a linear relationship was observed between them. The firmness of'Rinka 409'can be estimated using a simpler linear regression model using this method than previous researches.