Citation
Shu, Hui Gan and Thing, Chai Tham and Mei, Xiang Ng and Lee, Suan Chua and Aziz, Ramlan and Baba, Mohamed Redza and Abdullah, Luqman Chuah and Sze, Pheng Ong and Chung, Lim Law
(2017)
Study on retention of metabolites composition in misai kucing (orthosiphon stamineus) by heat pump assisted solar drying.
Journal of Food Processing and Preservation, 41 (6).
pp. 1-9.
ISSN 0145-8892; ESSN: 1745-4549
Abstract
In this research, the effects of different drying methods on the two biomarker compounds concentrations, such as sinensetin (SEN) and rosmarinic acid (RA) of Orthosiphon staminues Benth leaves, flowers, stems and mix were investigated. SEN and RA retention among the dehydrated samples were maximum 83.07% in leaves and 92.54% in flowers, respectively by heat pump assisted solar drying method. For heat pump assisted solar dried samples, there are no significant differences (p > .05) in the retention of SEN and RA as compared to fresh samples. However, there are significant differences (p < 0.05) in SEN and RA retention in solar dried leaves, flowers, stems and mix as compared to fresh samples. Besides, an optimization study was performed to evaluate the optimal drying conditions for obtaining high SEN yields from Misai Kucing's leaves, flowers, stems and mixes with high RA contents within the drying parameters.
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