期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
高效液相色谱法测定手冲咖啡中绿原酸与咖啡酸含量 被引量:2
1
作者 袁栋勇 周湧智 +3 位作者 毛玮琪 毕建辛 张黔文 纪晓娜 《科技创新与应用》 2022年第35期54-56,60,共4页
采用高效液相色谱法(HPLC)检测5种手冲咖啡中的绿原酸和咖啡酸含量。色谱条件为C18固定相,柱温35℃;0.5%乙酸水溶液-乙腈为流动相,梯度洗脱,流速1 mL·min^(-1);紫外检测器,检测波长为285 nm;进样量10μL。结果显示,5种手冲咖啡中... 采用高效液相色谱法(HPLC)检测5种手冲咖啡中的绿原酸和咖啡酸含量。色谱条件为C18固定相,柱温35℃;0.5%乙酸水溶液-乙腈为流动相,梯度洗脱,流速1 mL·min^(-1);紫外检测器,检测波长为285 nm;进样量10μL。结果显示,5种手冲咖啡中的绿原酸含量在1.334~3.097 g·kg^(-1),中国云南省小粒咖啡咖啡豆制作的手冲咖啡中咖啡酸含量为0.020 g·kg^(-1),其余未检出。样品中绿原酸和咖啡酸的相对标准偏差(RSD)0.82%~1.34%,加标回收率83.6%~96.0%,最低检出限分别为0.007 g·kg^(-1)(S/N=2.58)、0.004 g·kg^(-1)(S/N=3.37)。该方法简单、高效,可用于测定手冲咖啡中绿原酸和咖啡酸的含量;对于指导手冲咖啡的调制和饮用提供数据支撑。 展开更多
关键词 手冲咖啡 绿原酸含量 咖啡酸含量 高效液相色谱 紫外检测
下载PDF
注射用苦碟子中绿原酸和咖啡酸含量测定方法研究
2
作者 韦翠玲 《当代医学》 2012年第8期150-151,共2页
目的建立注射用苦碟子中绿原酸和咖啡酸含量测定方法。方法色谱柱为迪马C18柱(250mm×4.6mm,5μm);流动相为1.0%的冰乙酸水溶液-1.0%冰乙酸乙腈溶液梯度洗脱;检测波长为327nm;流速1.0mL·min-1;柱温30℃;进样量10μl。结果绿原... 目的建立注射用苦碟子中绿原酸和咖啡酸含量测定方法。方法色谱柱为迪马C18柱(250mm×4.6mm,5μm);流动相为1.0%的冰乙酸水溶液-1.0%冰乙酸乙腈溶液梯度洗脱;检测波长为327nm;流速1.0mL·min-1;柱温30℃;进样量10μl。结果绿原酸在3.02~120.80μg·mL-1质量浓度范围内线性关系良好,r=0.9999(n=6),平均回收率为100.0%,RSD为0.45%;咖啡酸在2.44~97.60μg·mL-1质量浓度范围内线性关系良好,r=0.9999(n=6),平均回收率为100.1%,RSD为0.65%。结论方法操作简便,结果准确,可用于注射用苦碟子中的绿原酸、咖啡酸含量测定。 展开更多
关键词 注射用苦碟子 绿原酸 咖啡酸含量
下载PDF
Simultaneous determination of seven caffeoylquinic acids and three flavonoids in Pyrrosia petiolosa(Christ) Ching by RP-UFLC-DAD 被引量:1
3
作者 任彪 孙洪阳 王弘 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2014年第9期642-648,共7页
An efficient, sensitive, accurate and rapid analytical ultra-fast liquid chromatography (UFLC) method for quality evaluations ofPyrrosia petiolosa (Christ) Ching from 20 regions of China was developed in this stud... An efficient, sensitive, accurate and rapid analytical ultra-fast liquid chromatography (UFLC) method for quality evaluations ofPyrrosia petiolosa (Christ) Ching from 20 regions of China was developed in this study. Ten marker compounds were simultaneously quantified, including 5-caffeoylquinic acid (5-CQA), 3-caffeoylquinic acid (3-CQA), 4-caffeoylquinic acid (4-CQA), 1-caffeoylquinic acid (1-CQA), 3,5-dicaffeoylquinic acid (3,5-diCQA), 4,5-dicaffeoylquinic acid (4,5-diCQA), 3,4-dicaffeoylquinic acid (3,4-diCQA), astragalin, kaempferol-3,7-di-O-glucoside and (±)eriodictyol-7-O-β-D-glucuronide. Chromatography was performed on a Kromasil 100-2.5C18 (100 mm×2.1 mm, 2.5 μm) C18 column with gradient elution. The mobile phases consisted of 0.1% formic acid/water (A) and 0.1% formic acid/methanol (B). The detection wavelength was set at 326 nm and the flow rate was 0.4 mL/min. Ten components were separated well with good linearity (r2〉0.9998), precision, repeatability, stability. The recovery was in the range of 99.08%-102.77%. The results showed that the content determination using RP-UFLC-DAD fingerprint technique provides an efficient, sensitive, accurate and rapid analytical method for quality assessment ofP. petiolosa (Christ) Ching. Cluster analysis and principal components analysis were successfully applied to analyze 20 samples, the results revealed that the method was efficient and authentic to distinguish producing areas and the source of P. petiolosa (Christ) Ching. Keywords: Pyrrosiapetiolosa (Christ) Ching, Caffeoylquinic acids, Flavonoids, Multicomponent determination, UFLC 展开更多
关键词 Pyrrosia petiolosa (Christ) Ching Caffeoylquinic acids FLAVONOIDS Multicomponent determination UFLC
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部