Quantitative visualization of pectin distribution maps of peach fruits.
Quantitative visualization of pectin distribution maps of peach fruits.
复制标题
桃果实果胶分布图的定量可视化
DOI：
10.1038/s41598-017-09817-7
复制
发表时间：
2017-08-24
影响因子：
4.6
通讯作者：
He Y
中科院分区：
文献类型：
--
作者：
Zhu N;Huang W;Wu D;Chen K;He Y
果胶含量是水果的重要品质指标，桃子成熟过程中果胶含量发生显着变化。常用的咔唑比色法只能测量每个果肉样品中每种果胶的总含量值，无法提供整个果肉果胶含量的分布图。本工作利用高光谱成像技术，在像素水平上定量可视化桃浆内部果胶含量的分布图。原果胶含量预测良好，最佳残差预测偏差为2.264，而水溶性果胶和总果胶含量的预测则不理想。在最佳预测模型的基础上，定量可视化原果胶含量的分布图。原果胶分布实例的直方图揭示了桃果肉中存在多种原果胶含量。我们的结果表明，高光谱成像有望成为咔唑比色法的有力替代方法，用于测量桃浆内原果胶分布的空间变化。分布图可作为成熟度指标，深入了解和评价桃果实的成熟过程。
Pectin content is an important quality index of fruits, as pectin content undergoes significant changes during the peach ripening process. The commonly used carbazole colorimetry method measures only the total content value of each kind of pectin for each pulp sample and cannot provide distribution maps of the pectin contents for the whole fruit pulp. This work used the hyperspectral imaging technique to quantitatively visualize the distribution maps of pectin contents inside peach pulp at the pixel level. The protopectin contents were well predicted, with the best residual predictive deviation of 2.264, whereas the predictions of the water-soluble pectin and the total pectin contents were not satisfied. On the basis of the best predictive model, the distribution maps of the protopectin contents were quantitatively visualized. A histogram of an example protopectin distribution revealed the existence of a wide range of protopectin contents in peach pulp. Our results show that hyperspectral imaging holds promise as a powerful alternative to the carbazole colorimetry method for measuring the spatial variations in the protopectin distribution inside peach pulp. The distribution maps could be used as a maturity indicator to understand and evaluate the ripening process of peach fruit in depth.
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影响因子：
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作者：
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通讯作者：
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