Afiqah, Yeop and Pang, Sook Fun and M. M., Yusoff and Sureena, Abdullah and Jolius, Gimbun (2019) POCER1914: Elucidation of Gallic Acid Degradation Pathway from Labisia Pumila via Mass Spectroscopy Technique. In: Proceedings of the 5th Postgraduate Colloquium for Environmental Research (POCER 2019) , 8-9 August 2019 , Putrajaya, Malaysia. pp. 36-38., 8. ISBN 978-967-11279-6-4
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Abstract
Thermal degradation kinetics and mechanism of gallic acid was investigated at temperatures ranging from 60 to 120 °C with a heating time of 90 min. The ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometer was used to elucidate the degradation mechanism of gallic acid in the heated sample. The degradation kinetics of gallic acid shows a good fit with the 1st order model with correlation coefficients of R2 ≥ 0.96. The kinetics rate constant (k) were 0.0011, 0.0038 and 0.0076 min-1 at the temperature of 60, 90 and 120 °C, respectively. This finding in this work may serve as a useful guide to minimize the gallic acid degradation and formation of unwanted by-products during processing of L. pumila.
| Item Type: | Conference or Workshop Item (Lecture) |
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| Uncontrolled Keywords: | Labisia pumila; thermal degradation kinetics; mass spectrometry |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow Faculty of Chemical & Natural Resources Engineering Faculty of Industrial Sciences And Technology |
| Depositing User: | Prof. Dr. Jolius Gimbun |
| Date Deposited: | 16 Dec 2019 08:04 |
| Last Modified: | 16 Dec 2019 08:04 |
| URI: | http://umpir.ump.edu.my/id/eprint/26835 |
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