共查询到10条相似文献,搜索用时 234 毫秒
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灵香草精油化学成分研究 总被引:9,自引:0,他引:9
采用毛细管柱气相色谱和色谱-质谱-计算机联用技术分析了灵香草(Lysimachia foenum-graecum Hance)全草精油的化学成分。共鉴定出47个成分,其中以十六酸(Hexadecanoic acid)、十七酸(Heptadecanoic acid)、二十碳三烯酸甲酯(Eicosatrienoic acid methy1exter)等含量较多。 相似文献
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玫瑰花保藏方法与精油得率关系的研究 总被引:2,自引:0,他引:2
根据实际条件对玫瑰花的保藏方法进行了研究,寻找出了几种有效的保藏方法.包装袋A保藏玫瑰花,温度变化小,花香、花色好,是一种既经济又简便易行的短时间保藏玫瑰花的好方法,可保藏24 h;室内摊放,散热好、玫瑰花不发热,在放置6 h后因后熟作用,出油率比立即提取提高20%,但随着时间的延长,香气不断向空气中散失,出油率下降,所以室内摊放保藏鲜花时间不宜过长,最好不要超过6 h;冷冻能长时间地保藏玫瑰花,出油率亦不受影响;盐渍可以较长时间地保藏玫瑰花,15%的加盐量效果较好. 相似文献
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Epoxysesquithujene, a new sesquiterpene epoxide has been characterized in the essential oil of Valeriana hardwickii var. hardwickii on the basis of chemical reactions and extensive NMR data. Fourteen other terpenoids have also been identified on the basis of GC-MS. 相似文献
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Vigilio Ballabeni Massimiliano Tognolini Carmine Giorgio Simona Bertoni Renato Bruni Elisabetta Barocelli 《Fitoterapia》2010
Here we investigated the anti-inflammatory properties of Ocotea quixos essential oil and of its main components, trans-cinnamaldehyde and methyl cinnamate, in in vitro and in vivo models. Ocotea essential oil and trans-cinnamaldehyde but not methyl cinnamate significantly reduced LPS-induced NO release from J774 macrophages at non-toxic concentrations, inhibited LPS-induced COX-2 expression and increased forskolin-induced cAMP production. The essential oil (30–100 mg/kg os) and trans-cinnamaldehyde (10 mg/kg os) in carrageenan-induced rat paw edema showed anti-inflammatory effect without damaging gastric mucosa. In conclusion we provide the first evidence of a significant anti-inflammatory gastro-sparing activity of O.quixos essential oil. 相似文献
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沤置后油茶果实内物质的转化和积累 总被引:5,自引:0,他引:5
本文研究了采摘后的油茶果实内物质的转化和积累规律。把形态上已经成熟的油茶鲜果进行沤置处理,测定结果表明沤置后能使油茶果实产生后熟作用。沤置5—7天后油脂积累达最高水平(50.07%),继续沤制时油脂含量下降;沤置后的油茶果其油脂组成也发生了变化,饱和脂肪酸含量下降,不能和脂肪酸含量增加。该研究结果为采摘后的油茶果如何进行后期处理以提高出油率和油的质量提供了理论依据。 相似文献