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KMID : 1024420120160010020
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Food Engineering Progress
2012 Volume.16 No. 1 p.20 ~ p.25
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Starch Index Derived from Stained Images for Rapid Quantification of Starch in Apples
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Gil Bog-Im
Cho Young-Jin
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Abstract
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Starch content in apples is one of important quality parameters to evaluate their maturity or ripeness. This study aimed to develop a rapid and simple method for the quantification of starch content by means of computer vision. In advance, three types, or type I, type II and type III, of starch indices to indicate starch content in apples stained with KI/I2 solution were proposed. When the proposed starch indices were correlated with total starch content and amylose content, the type I of starch index indicated total starch content of three types of starch indices. The type I index was defined as the ratio of the area with pure blue to the total area in an Hue-Lightness-Saturation (HLS) image for apple stained with KI/I2. When the total starch content was particularly expressed on a dry basis, the highest correlation coefficient (0.811) was observed.
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KEYWORD
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starch index, image, rapid quantification, apple
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