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红阳猕猴桃和葛根配方的解酒保肝与抗氧化作用研究 总被引:1,自引:0,他引:1
研究红阳猕猴桃、葛根及其配方组合物的解酒保肝与抗氧化作用。采用乙醇所致小鼠自主活动减少和小鼠共济失调实验评价解酒作用;采用小鼠酒精性肝损伤模型评价保肝作用,采用ELISA测定大鼠尿液中8-羟基脱氧鸟苷酸(8-hydroxy-2-deoxyguanosine,8-OHdG)和乙酰—赖氨酸加合物(hexanoyl-lysine adduct,HEL),以了解配方组合物对DNA过氧化和脂质过氧化的影响。结果表明,红阳猕猴桃—葛根配方可减轻酒精所致小鼠行为抑制和共济失调,提示具有解酒作用;对酒精所致小鼠肝脏MDA、TG水平升高和GSH水平降低有明显改善,提示具有保护化学性肝损伤作用;降低正常和酒精损伤大鼠尿液中过氧化生物标志物水平,提示具有较好的抗氧化作用。红阳猕猴桃—葛根配方具有快速解酒作用,且可持续2—4h;对酒精性肝损伤有一定的保护作用,其机制与抗氧化有关。 相似文献
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亚临界丙烷萃取条件对人参提取物中有机氯农药残留脱除的影响 总被引:1,自引:0,他引:1
以人参提取物为原料,利用亚临界丙烷萃取技术脱除其中的有机氯农药残留,研究了一定范围内的萃取压力(4~12 Mpa)、萃取温度(50~80 ℃)、萃取时间(60~180 min)和溶剂流量(1 96~3 92 kg/h)对亚临界丙烷萃取脱除人参提取物中农药残留的影响.由正交实验确定了最佳萃取条件: 萃取压力8 Mpa,萃取温度65 ℃,萃取时间120 min,溶剂流量2.94 kg/h.在此条件下,γ-BHC、op-DDT残留的脱除率接近100%,TCNB、pp-DDT脱除率大于60%,人参皂甙损失小于6.53%. 相似文献
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The molluscicidal activity of essential oils from two endemic (Juniperusbrevifolia; Laurus azorica) and three introduced (Hedychium gardnerianum; Pittosporum undulatum; Psidium cattleianum) Azorean plants against the snail Radix peregra was studied under laboratory conditions. Essential oils from leaves of H. gardnerianum, L. azorica and J.brevifolia presented promising molluscicidal activity on both adults and juveniles stages of R. peregra. The molluscicidal activity of these essential oils was found to be both time and concentration dependent. Lethal concentrations (LC50) varied between 15.4 (L. azorica) and 44.6 ppm (H. gardnerianum) for juveniles and from 45.3 (H. gardnerianum) to 54.6 ppm (J. brevifolia) for R. peregra adults. Ovicidal effect, calculated as percentage of egg hatching, at 100 ppm concentration, was observed in essential oils from P. undulatum flowers (4.2% of hatching) and leaves of H. gardnerianum (4.9%), L. azorica (7.4%) and J. brevifolia (17.7%). The present study is the first attempt to assess the molluscicidal potential of some Azorean plants essential oils against a Lymnaeidae snail. In fact, the H. gardnerianum, L. azorica and J. brevifolia can offer natural alternative tools for the control of R. peregra population, but more research is needed in order to determine the mode of action of these oils and determine the side effects on the ecosystem where this freshwater snail occurs. 相似文献
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利用电感耦合等离子体-质谱仪(ICP-MS)测定板蓝根原药材和水煎液中13种元素的含量。形态研究采用高速离心和滤膜分离水煎液中的溶解态和颗粒态,元素的溶解态再用树脂XAD-4、树脂D001、树脂D301和树脂D751分别区分非极性吸附态、阳离子交换态、阴离子交换态和螯合吸附态。结果表明,板蓝根药材含有微量Cu、Pb和Cd等重金属,同时含有丰富的Mg、Ca、Fe、Al等大量元素,其中Ca含量最高,为2739 mg·kg-1;Zn、Mg、Ca、Mn、Al和Fe的浸出率较高,在42.9%到81.9%之间;Pb和Cu的浸出率最低,只有10%左右。Zn、Mg、Ca、Mn和Pb元素颗粒态比例在0%到9.3%之间,其他元素颗粒态比例在14.3%到85.7%之间。在溶解态当中,所有元素都具有阴离子交换态;Cu、Sn、Cr和Al没有或者很少有阳离子交换态,其余元素的阳离子交换态在32.4%到98.3之间;Al、Fe、Cu、Cr和Sn没有或者很少螯合吸附态,其余元素在54.9%到98.4%之间;Zn、Cu、Sn、Cd和Pb有非极性吸附态,其余元素没有。 相似文献
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