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Optical methods for quality evaluation of fruits (part 3)-relationships between optical density, slopes of the optical density distribution of fruits and fruit firmness

机译：水果质量评估的光学方法（第3部分）-光密度，水果光密度分布的斜率与水果硬度之间的关系

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摘要

A light transmittance measurement system consisting of a 783nm low power laser was examined to determine the optical density and slope of the distribution of optical density in cylindrical flesh samples of apple and Japanese pears. Furthermore,the relationships between these optical properties and the firmness of samples were examined. There were relationships (r >0.80) between the optical density and the firmness of fruits. The relationships between the slope and fruit firmness were very poor(r<0.53), except for Raritan apple (r=0.80). Changes in optical density and firmness were probably due to the ultra structural changes in the cell wall and in the middle lamella of fruit tissue.
机译：检查了由783nm低功率激光器组成的光透射率测量系统，以确定苹果和日本梨的圆柱形果肉样品的光密度和光密度分布的斜率。此外，检查了这些光学性质与样品的硬度之间的关系。果实的光密度与硬度之间存在关系（r> 0.80）。除Raritan苹果（r = 0.80）外，坡度与果实硬度之间的关系非常差（r <0.53）。光学密度和硬度的变化可能是由于水果组织的细胞壁和中间薄片的超微结构变化所致。

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