نتایج جستجو برای: pressure liquid chromatography

تعداد نتایج: 647124  

2012
Ji-Eun Eom Sang-Chul Kwon Gi-Seong Moon

To support beneficial effects of makgeolli for human health, we investigated for the presence of 1,4-dihydroxy-2-naphthoic acid (DHNA), a bifidogenic growth stimulator (BGS), from commercial makgeolli products. Among eleven makgeolli products (A∼K), four showed positive peaks for DHNA in high performance liquid chromatography analysis. Makgeolli product A in particular contained the highest con...

Journal: :Plant physiology 1977
A J Ciha M L Brenner W A Brun

Abscisic acid (ABA) was purified from soybean (Glycine max [L.]) seed extract using a preparative high performance liquid chromatography (HPLC) procedure. The preparative procedure was rapid (70 minutes per sample), required no prior partitioning for purification and was quantitative as demonstrated with an internal standard of [2-(14)C]ABA, of which 98.9% was recovered.Following purification b...

2013
Salvatore Sotgia Elisabetta Pisanu Gianfranco Pintus Gian Luca Erre Gerard Aime Pinna Luca Deiana Ciriaco Carru Angelo Zinellu

Two sensitive and reproducible capillary electrophoresis and high-performance liquid chromatography-fluorescence procedures were established for quantitative determination of L-egothioneine in plasma. After derivatization of L-ergothioneine with 5-iodoacetamidofluorescein, the separation was carried out by HPLC on an ODS-2 C-18 sperisorb column by using a linear gradient elution and by HPCE on ...

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