Rassem, Hesham H. A. and Nour, A. H. and R. M., Yunus (2017) Extraction and characterization of bioactive compounds from hibiscus flower via microwave-assisted hydrodistillation (MAHD). In: Proceedings of the 2nd International Conference on Separation Technology: ICoST 2017 , 15-16 April 2017 , Johor Bahru, Malaysia. pp. 1-5.. ISBN 978-967-0194-85-1
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Abstract
In this study, the influence of several experimental parameters on the Microwave-assisted Hydrodistillation (MAHD) extraction of Hibiscus flower was investigated: extraction time, solvent polarity, sample amount, solvent volume and sample particle size. It was concluded that the most influential variables were extraction time and solvent polarity. The optimized procedure employed 35 g of ground flowers, 280 mL of methanol and 120 min of extraction. The extracts were fractionated using preparative silica columns (30 m * 0.25 mm i.d., film thickness 0.25 mm). Oven temperature was programmed to 60 oC for 10 min, and then increased at 20 oC/min to 230 oC and held at 250 oC for 10 min. The carrier gas, helium, was adjusted to a linear velocity of 30 cm/s and the resulting fractions were analyzed by Gas Chromatography-mass Spectroscopy (GC-MS). Some saturated hydrocarbons and fatty acid methyl esters were identified in theHIbiscus flowers extracts. Thirty-seven compounds were identified, representing 99.9.% of the oil. The main components were Ethanimidic acid, ethyl ester (31.43%), Propanal, 2,3-dihydroxy (12.58%) and 4H-Pyran-4-one, 2,3-dihydro-3,5-di hydroxy-6-methyl (10.69%).
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | Essential oil, Hibiscus flower, Microwave-assisted Hydrodistillation (MAHD), Gas Chromatography-mass Spectroscopy (GC-MS) |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering |
| Depositing User: | Noorul Farina Arifin |
| Date Deposited: | 26 Jul 2019 07:33 |
| Last Modified: | 26 Jul 2019 07:33 |
| URI: | http://umpir.ump.edu.my/id/eprint/25521 |
| Download Statistic: | View Download Statistics |
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