陈皮压制饮片的煎煮质量评价

目的:评价陈皮压制饮片的煎煮质量。方法:采用传统煎煮法,以橙皮苷含量和干膏率为评价指标,考察陈皮压制饮片和普通饮片的煎煮溶出情况及二者在中药复方中的煎煮溶出情况。采用高效液相色谱法测定橙皮苷的含量;采用相似因子f2法比较二者溶出曲线的相似性。结果:在单味饮片和复方的煎煮中,压制饮片的干膏率和橙皮苷含量均高于普通饮片,但差异无统计学意义(P>0.05);f2相似因子比较结果f2=82,表明压制饮片和传统饮片溶出行为相似。结论:陈皮压制饮片不影响陈皮的煎煮溶出效果,且有效成分橙皮苷的含量较高,并具有易于运输、贮藏等优点,符合中药现代化的要求。     

加味皮康颗粒中橙皮苷的含量测定

目的:建立以高效液相色谱法测定加味皮康颗粒中橙皮苷含量的方法。方法:色谱柱:SHISEIDO C18(4.6mm×250mm,5μm);流动相:甲醇-乙腈-0.1%磷酸溶液(12∶13∶75),柱温:35℃,检测波长:284nm,流量:1.0ml/min。结果:橙皮苷进样量在0.06336~2.5344μg/ml范围内线性良好(r=0.9998),平均回收率为98.83%,RSD为1.34%(n=6)。结论:本方法简便快速、准确、可用于加味皮康颗粒的质量控制。     

HPLC法测定肾乐胶囊中橙皮苷的含量

目的:建立HPLC测定肾乐胶囊中橙皮苷含量的方法。方法:采用HPLC法对肾乐胶囊中橙皮苷进行含量测定。测定条件:采用Diamonsil C18色谱柱(250 mm×4.6 mm,5μm),流动相为甲醇-水(40∶60),检测波长:283 nm,流速:1.0mL.min-1,柱温:35℃。结果:在本法条件下,橙皮苷与其他杂质峰分离良好,进样量在8.544～85.44 mg.mL-1与峰面积呈良好的线性关系(r=0.999 9),平均加样回收率为101.6%,RSD为0.54%(n=6)。三个批次的肾乐胶囊中橙皮苷的平均含量为2.75 mg.g-1。结论:采用该方法测定肾乐胶囊中的橙皮苷,简便易行,结果准确,可作为肾乐胶囊的质量控制方法。     

高效液相色谱法测定百花定喘片中橙皮苷的含量

目的:建立高效液相色谱法测定百花定喘片中橙皮苷的含量。方法:以十八烷基硅烷键合硅胶为填充剂,甲醇-醋酸-水(35:4:61)为流动相,检测波长283nm。结果:平均回收率为98.26%,RSD为0.89%。结论:该方法简便、准确。     

正交实验法优选青皮的醇提工艺

目的优选青皮的最佳醇提工艺。方法以橙皮苷为标样,采用HPLC归一化法测定出的总黄酮提取率为考察指标,先比较不同浓度的乙醇对青皮的提取效果,然后采用L9(34)正交试验法,考察乙醇用量、提取时间及提取次数对提取效果的影响。结果 60%乙醇的提取效果最好,提取次数对考察指标具有显著性影响。结论青皮的最佳醇提工艺为加8倍药材量的60%乙醇,加热回流提取3次,每次1.0h。     

正交设计优选健脾颗粒中橙皮苷的提取工艺

目的：优选健脾颗粒中橙皮苷的提取工艺。方法：以处方中的主要药效成分橙皮苷含量为观察指标,采用正交设计法筛选最佳提取工艺条件。结果：最佳提取方法为回流1.0 h、加95%甲醇50 ml。结论：优选的提取方法为健脾颗粒中橙皮苷含量测定提供可靠方案,保证产品质量。     

Protective effect of hesperidin against γ-radiation induced oxidative stress in Sprague-Dawley rats

The high risk of human exposure to ionizing radiations during radiation therapy and also during space travel underscores the need to develop novel radioprotectors with improved efficacy. Increased oxidative stress and antioxidant deficit have been suggested to play a major role in radiation induced toxicity, and hence maintaining an antioxidant balance through dietary supplementation might provide beneficial effects during radiation exposure. The present study was designed to evaluate the effect of hesperidin, a flavanone glycoside found in citrus plants, on the antioxidant defense system and lipid peroxidation against γ-radiation induced damage in rats. Exposure of rats to γ-radiation (5 Gy) resulted in tissue damage characterized by significantly elevated levels of serum marker enzymes (AST, ALT, ALP, LDH, and CPK) and a decrease in their activities in the heart tissue. γ-Radiation induced oxidative stress was observed by elevated levels of lipid peroxidation and a decrease in the activities of endogenous antioxidants (SOD, CAT, GPx, and GSH) in the heart and kidney of rats. Post-treatment with hesperidin (50 and 100?mg/kg bw/day, orally) for 7 days following exposure to γ-radiation significantly attenuated these changes when compared to the radiation exposed groups. Histopathological examination of the heart tissue of rats exposed to γ-radiation and treated with hesperidin also showed minimal damage when compared to those exposed to γ-radiation alone. These findings indicate the protective effect of hesperidin on lipid peroxidation and the antioxidant tissue defense system during γ-radiation induced tissue damage in rats.     

HPLC法测定枳术颗粒中枳实的5种黄酮类物质

目的：建立枳术颗粒5种黄酮类物质含量控制方法。方法：采用高效液相色谱法在同一色谱条件下测定枳术颗粒中柚皮苷、橙皮苷、新橙皮苷、柚皮素、橙皮素含量。色谱条件：流动相乙腈-0.1%磷酸水梯度洗脱;检测波长为285 nm。结果：柚皮苷进样量在22.655～591.734 μg范围内呈良好线性关系,相关系数r²=0.9994;橙皮苷进样量在2.981～71.532 μg范围内呈良好线性关系,相关系数r²=0.9997;新橙皮苷进样量在22.152～531.648 μg范围内呈良好线性关系,相关系数r²=0.9994;柚皮素在3.015～72.378 μg范围内呈良好线性关系,相关系数r²=0.9997;橙皮素在2.868～68.85 μg范围内呈良好线性关系,相关系数r²=0.9990;5个成分的平均回收率分别为99.9%、100.4%、98.6%、99.9%和100.0%（RSD%＜3%）。结论：本方法准确可靠,可准确测定枳术颗粒中5种黄酮类物质的含量。     

蒸制陈皮炮制工艺的研究

目的：优化蒸制陈皮的最佳炮制工艺。方法：以橙皮苷、挥发油含量为评价指标,选择加水量、闷润时间、蒸制温度、蒸制时间为考察因素,采用正交设计L9（3^4）,优选蒸制陈皮的最佳炮制工艺。结果：确立了蒸制陈皮的最佳炮制工艺为：每100kg陈皮加200kg水,室温闷润2h,在70—80℃下蒸制30min。结论：该工艺合理可行。     

五参二连颗粒的质量标准

目的:建立五参二连颗粒的质量标准。方法:采用TCL法鉴别处方中的丹参、黄连;采用HPLC法测定陈皮中橙皮苷的含量,ZOBRAX SB C₁₈色谱柱（150 mm×4.6 mm,5μm）,甲醇-0.5%冰醋酸（38:62）,流速1.0 ml·min^-1,柱温32℃,检测波长283 nm。结果:TLC法鉴别色谱特征斑点明显,橙皮苷在4.144～62.160μg·ml^-1范围内线性关系良好（r=0.9999）,平均回收率为99.96%,RSD=0.48%（n=6）。结论:所建立的TLC和HPLC方法操作简便快捷,准确可靠,重复性好,可用于该制剂的质量控制。