Chen, Zhenchun; Mei, Xin; Jin, Yuxia; Kim, Eun-Hye; Yang, Ziyin; Tu, Youying published an article in 2014, the title of the article was Optimisation of supercritical carbon dioxide extraction of essential oil of flowers of tea (Camellia sinensis L.) plants and its antioxidative activity.Formula: C7H7FO And the article contains the following content:
BACKGROUNDTo extract natural volatile compounds from tea (Camellia sinensis) flowers without thermal degradation and residue of organic solvents, supercritical fluid extraction (SFE) using carbon dioxide was employed to prepare essential oil of tea flowers in the present study. Four important parameters-pressure, temperature, static extraction time, and dynamic extraction time-were selected as independent variables in the SFE. RESULTSThe optimum extraction conditions were the pressure of 30 MPa, temperature of 50°C, static time of 10 min, and dynamic time of 90 min. Based on gas chromatog.-mass spectrometry anal., 59 compounds, including alkanes (45.4%), esters (10.5%), ketones (7.1%), aldehydes (3.7%), terpenes (3.7%), acids (2.1%), alcs. (1.6%), ethers (1.3%) and others (10.3%) were identified in the essential oil of tea flowers. Moreover, the essential oil of tea flowers showed relatively stronger DPPH radical scavenging activity than essential oils of geranium and peppermint, although its antioxidative activity was weaker than those of essential oil of clove, ascorbic acid, tert-butylhydroquinone, and butylated hydroxyanisole. CONCLUSIONEssential oil of tea flowers using SFE contained many types of volatile compounds and showed considerable DPPH scavenging activity. The information will contribute to the future application of tea flowers as raw materials in health-care food and food flavor industries. © 2013 Society of Chem. Industry. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Formula: C7H7FO
The Article related to camellia essential oil supercritical carbon dioxide extraction, antioxidative activity, essential oil, supercritical carbon dioxide extraction, tea flower, volatile, Food and Feed Chemistry: Packaging, Preservation, and Processing and other aspects.Formula: C7H7FO
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