E3S Web Conf.
Volume 302, 20212021 Research, Invention, and Innovation Congress (RI2C 2021)
|Number of page(s)||8|
|Section||Environmental Science and Engineering|
|Published online||10 September 2021|
Production and Quality Evaluation of Young Thai Jasmine Rice Flake Using Drum Dryer
Department of Innovation and Product development Technology, Faculty of Agro-industry, King Mongkut’s University of Technology North Bangkok, 129 Moo21 Nernhom, Prachinburi, 25230, Thailand
2 Department of Food and Nutrition, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
* Corresponding author: firstname.lastname@example.org
Immature rice grains contain high bioactive compounds. Drying has been used for the food preservation and reduction of agricultural waste. This study aimed to produce the rice flake from young Thai Jasmine rice grain (light green and soft texture) using double drum dryer at 120 °C, drum rotation speed 0.5, 0.7, and 0.9 rpm, and the ratios of grain to water of 1:3 1:5 and 1:7w/w. The nutritional properties of rice flake were also investigated. The results showed that increasing rotation speed gives a significant effect on the higher moisture content and water activity. Using lower water ratio with slowing down rotation speed resulted in higher brightness of the flake products including quicker dehydration. The selected optimal condition of preparing rice flake was 1:5 w/w young grain to water at 0.5 rpm drum speed. The flake contains fat, protein, carbohydrate, ash, approximately 0.004%, 6.140%, 88.686% and 0.92%, respectively. Phenolic content and antioxidant capacity of rice flake were decreased after drying. Total phenolic content of the flake was 280.931 mg GAE/g and antioxidant activities; DPPH, FRAP and ABTS were 254.158, 123.172 and 372.298 mg TE/g, respectively. Young rice flake remains a great nutritional value which has potential in the food industry.
Key words: Young rice grain / Thai Jasmine rice / Double drum dryer / Rice flake / Total phenolic / Antioxidant activity
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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