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目的:优选苦瓜有效物质的最佳提取工艺.方法:以苦瓜中有效物质总甾(醇)苷的含量为指标,采用正交试验优选最佳提取工艺.结果:水提取的最佳工艺条件为A1B3C3;乙醇提取的最佳工艺条件为A1B2C3D.结论:乙醇提取法总甾(醇)苷含量较高. 相似文献
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苦瓜降血糖有效物质的提取工艺研究 总被引:5,自引:0,他引:5
目的:优选苦瓜有效物质的最佳提取工艺。方法:以苦瓜中有效物质总甾(醇)苷的含最为指标,采用止交试验优选最佳提取工艺。结果:水提取的最佳工艺条件为A1B3C3;乙醇提取的最佳工艺条件为A1B2C3D。结论:乙醇提取法总甾(醇)苷含量较高。 相似文献
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消渴颗粒剂提取工艺的研究 总被引:3,自引:1,他引:3
目的:确定消渴颗粒剂适宜的提取工艺。方法:采用正交试验的方法,以分组提取的药物中有效成分的提出率为指标,确定提取用溶剂及加入量、提取次数与时间等工艺参数。结果:确定黄芪单独醇提的工艺条件为60%乙醇回流提取2次,每次6倍量,每次2h;葛根等3味药共同醇提的工艺条件为80%乙醇回流提取4次,每次6倍量,每次1h;鬼箭羽等3味药共同水提的工艺条件为加水12倍量,提取3次,每次1.5 h。结论:确定的提取工艺能保证有效成分提取充分,同时减少了出膏量。 相似文献
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目的:确定亚贡叶中总酚酸提取工艺。方法:确定以溶媒量、提取时间、提取次数为考察因素,水回流法提取总酚酸,采用正交设计试验确定最佳提取工艺。结果:最佳提取工艺为水回流法提取3次,每次10倍量水提取20min。结论:该工艺条件稳定,简便易行,重现性好,适于亚贡叶中总酚酸提取。 相似文献
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目的研究苦瓜总皂苷的纯化方法。方法苦瓜醇提的浓缩液,通过经处理的NKA大孔吸附树脂,用不同浓度的乙醇进行梯度洗脱,UV法跟踪检测。结果80%乙醇洗液中苦瓜总皂苷的含量最高,可达到36%。结论NKA大孔吸附树脂可有效地分离提取苦瓜总皂苷。 相似文献
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目的 研究苦瓜不同部位对实验性糖尿病模型小鼠体质量、进食量、进水量和血清中血糖值( GLU)、总胆固醇(TC)、甘油三酯(TG)、超氧化物歧化酶(SOD)、丙二醛(MDA)和游离脂肪酸(NEFA)的影响.方法 雄性昆明种小鼠喂以高脂饲料(10%蛋黄,10%猪油,1%胆固醇,0.2%胆盐,78.8%基料)1个月,诱发胰岛素抵抗,继以腹腔注射低剂量四氧嘧啶(90mg·kg-1),使之产生高血糖症,建立实验性糖尿病小鼠模型.苦瓜水提物冻干粉经100%甲醇回流提取得部位Ⅰ,残渣为部位Ⅱ.分别以10 g·kg-1(相当于生药材重量)的剂量灌胃给药,4周后测定小鼠空腹血糖、糖耐量、血液各项生化指标.结果 苦瓜部位Ⅰ和部位Ⅱ提取物均能缓解由糖尿病所引起的多食多饮病症,降低实验性糖尿病小鼠的GLU、NEFA、TC和MDA值(P<0.05),升高实验性糖尿病小鼠SOD值(P<0.05).结论 苦瓜部位Ⅰ和部位Ⅱ提取物能够降低实验性糖尿病小鼠的血糖值,并可调节其血脂代谢,且部位Ⅰ效果更好. 相似文献
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To examine the effects of Momordica charantia on glucose uptake and adiponectin secretion in adipose cells, 3T3-L1 adipocytes were treated with three concentrations (0.2, 0.3 and 0.4mg/ml) of water and ethanol extracts of Momordica charantia fruit and seeds alone and in combination with either 0.5nM or 50nM insulin. The treatment combination of 0.2mg/ml water extract and 0.5nM insulin was associated with significant (p<0.05) increases in glucose uptake (61%) and adiponectin secretion (75%) over control levels. The ethanol extract was not associated with an increase in glucose uptake; however, a dose-dependent decrease in basal glucose uptake and insulin-mediated glucose uptake was observed with the ethanol extract in combination with 50nM insulin. In the absence of insulin, no effects on glucose uptake were observed in adipocytes exposed to the water extracts whereas the highest concentration (0.4mg/ml) of the ethanol extract was associated with a significant (p<0.05) decrease in glucose uptake relative to controls. The present results indicate that water-soluble component(s) in Momordica charantia enhance the glucose uptake at sub-optimal concentrations of insulin in 3T3-L1 adipocytes, which is accompanied by and may be a result of increased adiponectin secretion from the 3T3-L1 adipocytes. 相似文献
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目的优选安乳颗粒的水煎工艺。方法以浸膏得率和芍药苷含量为指标,采用L9(34)正交试验进行优选。结果水煎工艺影响因素依次为加水量、提取时间和浸泡时间。最佳工艺条件为加8倍量水,煎煮2次,每次1.0 h。结论优选的水煎工艺易于操作,合理可行。 相似文献
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正交试验优选健胃消食口崩片提取工艺 总被引:6,自引:6,他引:0
目的:优化健胃消食口崩片的提取工艺。方法:通过正交试验,以橙皮苷提取率、绿原酸提取率和干膏得率为指标,考察加水量、煎煮时间和煎煮次数对提取效果的影响。结果:健胃消食口崩片的最佳提取工艺为煎煮2次,第1次加6倍量水煎煮2 h,第2次加5倍量水煎煮1 h。结论:最佳提取工艺合理、稳定、可行。 相似文献
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Antihyperglycemic effects of three extracts from Momordica charantia 总被引:19,自引:0,他引:19
Virdi J Sivakami S Shahani S Suthar AC Banavalikar MM Biyani MK 《Journal of ethnopharmacology》2003,88(1):107-111
Momordica charantia (L.) (Cucurbitaceae) commonly known as bitter gourd or karela is a medicinal plant, used in Ayurveda for treating various diseases, one of which is diabetes mellitus. In this study, various extract powders of the fresh and dried whole fruits were prepared and their blood glucose lowering effect compared by administrating them orally to diabetic rats. The aqueous extract powder of fresh unripe whole fruits at a dose of 20mg/kg body weight was found to reduce fasting blood glucose by 48%, an effect comparable to that of glibenclamide, a known synthetic drug. This extract was tested for nephrotoxicity, hepatotoxicity and biochemical parameters such as SGOT, SGPT and lipid profile. The extract did not show any signs of nephrotoxicity and hepatotoxicity as judged by histological and biochemical parameters. Thus the aqueous extract powder of Momordica charantia, an edible vegetable, appears to be a safe alternative to reducing blood glucose. 相似文献
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