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Effect of drying temperature on the composition of hydro distilled cinnamon bark oil

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dc.contributor.advisor Amarasinghe, Dr. ADUS Kumarage, NDI 2015-06-26T05:47:30Z 2015-06-26T05:47:30Z 2015-06-26
dc.description CD-ROM Included ; A Thesis submitted to the Department of Chemical and Process Engineering for the degree of Master of Science in Sustainable Process Development. en_US
dc.description.abstract Cinnamon (Cinnamomum Zeylanicum) is an endemic plant popularly known as “Kurundu” in Sri Lanka. Cinnamon yields mainly cinnamon leaf oil and cinnamon bark oil. Cinnamon bark oil produces by processing dried cinnamon chips. Composition of cinnamon bark oil varies due to many factors including the type and quality of cinnamon chips. Good quality cinnamon chips can be produced by uniform drying. Present study examines the effect of air drying temperature during pre processing of cinnamon chips on the volatile organic compounds of cinnamon bark oil extracted by the method of hydro-distillation of cinnamon chips. Laboratory scale tunnel dryer fitted with an electrical heater was used to dry cinnamon chips at five different air drying temperatures; ambient temperature, 35 °C, 40 °C, 45 °C and 50 °C. The extracted cinnamon bark oil was analysed by gas chromatography-mass spectrometry (GC-MS). A total of 16 compounds were identified, cinnamaldehyde-E, cinnamyl acetate, linalool and eugenol, in that order, being the main volatile organic compounds. Results indicated that air drying temperature of cinnamon chips significantly altered the composition of cinnamon bark oil. Percentage of Cinnamaldehyde-E increased with the increase in drying temperature. High percentage of monoterpenes, cinnamaldehyde and cinnamaldehyde derivatives such as cinnamyl acetate, and 2-methoxy-cinnamaldehyde was observed at low temperature drying. Increase in drying temperature resulted in substantial losses in certain oxygenated terpenes and sesquiterpene. The percentage of cinnamaldehyde-E could be substantially increased by hot air drying but at the expense of oil yield. Keywords: Bark oil, air drying, volatile organic compounds, cinnamon chips en_US
dc.language.iso en en_US
dc.title Effect of drying temperature on the composition of hydro distilled cinnamon bark oil en_US
dc.type Thesis-Abstract en_US
dc.identifier.faculty Engineering en_US M.Sc en_US
dc.identifier.department Department of Chemical and Process Engineering en_US 2013
dc.identifier.accno 107102 en_US

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