Color and textural quality of packaged wild rocket measured by multispectral imaging
Color and textural quality of packaged wild rocket measured by multispectral imaging
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DOI：
10.1016/j.postharvbio.2012.06.018
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发表时间：
2013-01-01
影响因子：
7
通讯作者：
Edelenbos, Merete
中科院分区：
文献类型：
--
作者：
Lokke, Mette Marie;Seefeldt, Helene Fast;Edelenbos, Merete
绿色和质地是野生火箭新鲜度感知的重要属性。包装绿叶蔬菜可以延缓衰老和黄化，但缺点是无氧呼吸可能导致组织完整性丧失和形成橄榄棕色。本文的基本假设是，多光谱成像可以预测包装后的野生火箭叶的颜色和质地质量，以便在科学实验中更快地评估绿叶蔬菜的视觉质量。多光谱成像与包装野生火箭质量的感官评价相关。从多光谱图像和分光光度计得出的CIELAB值在存储过程中发生了变化，但数据不足以描述感官感知颜色和质地的变化。来自多光谱图像的CIELAB值允许与8 mm口径的分光光度计测量相比，更详细地确定颜色。此外，多光谱图像能够减去样品的背景信息，并对野生火箭叶的视觉颜色给出更准确的结果。描述质地变化的近红外范围内的波长和描述颜色变化的可见光范围内的波长的组合对于量化包装的野生火箭的感官感知颜色和质地质量是最优的。(C)2012爱思唯尔B.V.保留所有权利。
Green color and texture are important attributes for the perception of freshness of wild rocket. Packaging of green leafy vegetables can postpone senescence and Yellowing, but a drawback is the risk of anaerobic respiration leading to loss of tissue integrity and development of an olive-brown color. The hypothesis underlying this paper is that color and textural quality of packaged wild rocket leaves can be predicted by multispectral imaging for faster evaluation of visual quality of leafy green vegetables in scientific experiments. Multispectral imaging was correlated to sensory evaluation of packaged wild rocket quality. CIELAB values derived from the multispectral images and from a spectrophotometer changed during storage, but the data were insufficient to describe variation in sensory perceived color and texture. CIELAB values from the multispectral images allowed for a more detailed determination of color compared to measurement with a spectrophotometer with an 8 mm aperture. Furthermore, the multispectral images enabled subtraction of background information of the sample and gave more accurate results on visual color of wild rocket leaves. The combination of wavelengths in the NIR range describing textural changes, and wavelengths in the VIS range describing color changes was optimal for quantification of sensory perceived color and textural quality of packaged wild rocket. (c) 2012 Elsevier B.V. All rights reserved.