Rapid Colorimetric Determination of Yellow Seed Content in Red Pepper (Capsicum annuum L.) Powder |
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Authors: | Jee Yun Jung Ji-Sun Kim Ki-Seon Yoo Donghwa Chung Nam Soo Han |
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Affiliation: | (1) Department of Food Science and Technology, Research Center for Bioresource and Health, Chungbuk National University, Cheongju, 361-763, Korea;(2) Department of Marine Food Science and Technology, Medical and Bio-Materials Research Center, Gangneung-Wonju National University, Gangneung, Gangwon, 210-702, Korea; |
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Abstract: | When the color reflectance of red pepper powders and their yellow seeds were measured using a colorimeter, the mean lightness
(L*), redness (a*), and yellowness (b*) values differed considerably between the pepper powders and seeds. On the basis of this difference, we determined the seed
content in the red pepper powders by using the correlated reflectance values. As the seed content of the powders increased,
both L* and b* increased, while a* decreased. The polynomial regression curve equation, Y( seed content, % ) = 3.51 ×L * - 1.10 ×a * - 1.34 ×b * - 72.74 Y\left( {{\hbox{seed content}},{ }\% } \right) = 3.51 \times L * - 1.10 \times a * - 1.34 \times b * - 72.74 , was obtained from the tristimulus data (L*, a*, and b*) of all the samples used. This is an easy method for the determination of the seed content in red pepper powders and it
can be applied to a similar system. |
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