Effect of the drying process on saffron petals color features using machine vision

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Kasali Sedigheh; MINAEI SAEID; AYYARI MAHDI

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Journal: Saffron Agronomy and Technology Year:2019 | Volume:7 | Issue:1 Page(s): 81-91

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Title

Effect of the drying process on saffron petals color features using machine vision

Author(s)

Kasali Sedigheh | MINAEI SAEID | AYYARI MAHDI | Issue Writer Certificate

Keywords

saffronQ2

color changesQ1

L * a * b *Q1

vision machineQ2

anthocyaninsQ2

Abstract

Drying is one of the methods commonly used to increase the shelf life of medicinal plants and agricultural products. In this study, the drying process of saffron petals with a thin layer hot air dryer at five levels at 40, 60, 80, 100 and 120 ° C and three air flows of 0. 5, 1 and 1. 5 m/s and their impacts on color parameter (amounts R, G and B) have been studied. By using machine vision system, color images of saffron dried petals were taken, and analyzed using image processing algorithms. Feature colors (RGB) were also obtained. In addition, the anthocyanin content, (using differential pH method) and L*a*b* characteristics were measured in order to determine the proper drying conditions of the samples. The data were analyzed using factorial experiment based on randomized complete design. The results showed that maximum RGB values were at the temperature range of 80 to 100° C, representing the greatest ratio and intensity of red, green and blue colors. Also, in this temperature range, the highest anthocyanin content (482. 21mg/l) and lowest color changes (Δ E) were obtained which indicate the relative desirability of this range for drying saffron petals.

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APA: Copy

Kasali, Sedigheh, MINAEI, SAEID, & AYYARI, MAHDI. (2019). Effect of the drying process on saffron petals color features using machine vision. SAFFRON AGRONOMY AND TECHNOLOGY, 7(1 ), 81-91. SID. https://sid.ir/paper/373109/en

Vancouver: Copy

Kasali Sedigheh, MINAEI SAEID, AYYARI MAHDI. Effect of the drying process on saffron petals color features using machine vision. SAFFRON AGRONOMY AND TECHNOLOGY[Internet]. 2019;7(1 ):81-91. Available from: https://sid.ir/paper/373109/en

IEEE: Copy

Sedigheh Kasali, SAEID MINAEI, and MAHDI AYYARI, “Effect of the drying process on saffron petals color features using machine vision,” SAFFRON AGRONOMY AND TECHNOLOGY, vol. 7, no. 1 , pp. 81–91, 2019, [Online]. Available: https://sid.ir/paper/373109/en

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