Supercritical extraction to obtain vetiver （Vetiveria zizanioides L. Nash） extracts from roots cultivated hydroponically
Supercritical extraction to obtain vetiver （Vetiveria zizanioides L. Nash） extracts from roots cultivated hydroponically作者机构：Department of Chemical Engineering-UFRN Natal RN 59072-970 Brazil LASEFI/DEA/FEA（College of Food Eng）/UNICAMP（University of Campinas）CampinasSao PauloCx.P.612113083-970Brazil LAC（Agronomic Institute of Campinas）CampinasSao PauloCx.P.2813001-970Brazil
出 版 物：《Journal of Agricultural Science and Technology》 (农业科学与技术（美国大卫英文）)
年 卷 期：2008年第2卷第10期
页 面：44-50页
学科分类：082802[工学-农业水土工程] 090707[农学-水土保持与荒漠化防治] 0907[农学-林学] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程] 0904[农学-植物保护]
主 题：manufacturing cost hydroponics supercriticalfluid extraction Vetiveria zizanioides
摘 要：We determined the global yield and composition of extracts from vetiver roots cultivated hydroponically. We extracted roots of two varieties collected at different times after planting. The extracts were obtained by supercritical fluid extraction （SFE）; we also estimated manufacturing costs. Constituents were quantified by gas-chromatography/time ionization detection （GC-FID）. Results demonstrated the efficacy of a hydroponic system in producing vctiver with a high root extract content. The largest yield was obtained from roots collected on days 132 and 92 after planting from varieties National （1.41%） and Bourbon （1.28%）, respectively. The major compounds present in the extract were khusimoi, isovalencenol, alpha-vetivone and beta-vetivone. To determine the economic viability of producing these extracts, manufacturing costs were estimated using a simplified methodology. The manufacturing costs were US$ 22.26/kg and US$ 24.26/kg for varieties national and Bourbon, respectively.
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