Citation
Gan, Shu Hui and Ng, Mei Xiang and Tham, Thing Chai and Chua, Lee Suan and Aziz, Ramlan and Baba, Mohamed Redza and Abdullah, Luqman Chuah and Ong, Sze Pheng and Law, Chung Lim
(2017)
Drying characteristics of Orthosiphon stamineus Benth by solar assisted heat pump drying.
Drying Technology, 35 (14).
1755 - 1764.
ISSN 0737-3937; ESSN: 1532-2300
Abstract
Processing methods of Misai Kucing still remain crude and lack technological advancements. In terms of drying, very few studies have attempted to apply advanced drying technology to improve Misai Kucing quality and drying time. This paper presents first attempt to improve Misai Kucing drying kinetics and product quality through solar-assisted heat pump drying and comparison was made against solar drying. Experimental results showed that solar-dried samples had the greatest total color change and loss of two bioactive ingredients as compared to solar-assisted heat pump-dried samples due to its longer time process, higher drying temperature, and chlorophyll degradation. By comparing the statistical values, it showed that the Page model had the best goodness of fit at all tested dried samples by both drying methods.
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