Comparison of Chemical Composition and Toxicity of Essential Oils from Lemongrass (Cymbopogon Citratus) Extracted with Microwave-Assisted Hydrodistillation (MAH) and Conventional Hydrodistillation (HD) Methods
Journal Title: JOURNAL OF ADVANCES IN NATURAL SCIENCES - Year 2014, Vol 1, Issue 1
Abstract
The demand of essential oil in current industry has increased due to its bioactive compound that shows various therapeutic effects. Therefore, the qualities of essential oil mainly depend on its constituents. This study was carried out to determine the effects of Microwave-assisted hydrodistillation (MAHD) and hydrodistillation (HD) methods on yield, chemical composition and toxicity of essential oil from Lemongrass (Cymbopogon citratus). A pale yellow oil yield of 1.46 % (90 min) and 1.38% (180 min) were obtained from MAHD and HD methods, respectively. GC-MS results shows a total of twenty compounds in MAHD oil and seven compound in HD oil. MAHD oil contained slightly higher amount of citral, which is the key component of Lemongrass (Cymbopogon citratus), compared to HD oil, 86.48% and 83.15%, respectively. However, hydrodistilled oil showed the presence of higher β-Myrcene, 9.91%, and only 3.96% were found in the MAHD oil. Other identified constituents, include Linalool, 1,6-Octadiene,3,5-dimethyl-,trans, Pinane, Geranic acid and 1,5-Octadiene. Cytotoxicity study was also carried out by using Artemia Salina (Brine shrimp) lethality bioassay. The Lemongrass (Cymbopogon citratus) oil extracted using MAHD and HD gives LC50 value of 0.35µg/ml and 0.29µg/ml, respectively. A minor variation in the total chemical composition of essential oil may contribute for different level of biological activity expression.
Authors and Affiliations
Ranitha. M, Dr. Abdurahman H. Nour, Ziad A. Sulaiman, Azhari H. Nour, Thana Raj. S
Keywords
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- EP ID EP654880
- DOI 10.24297/jns.v1i1.380
- Views 204
- Downloads 0
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