نتایج جستجو برای: micellar liquid chromatography

تعداد نتایج: 274571  

2004
Zilin Chen

Since the turn of the twentieth century, it has been recognized that many drugs, agrochemicals, food additives and fragrances are chiral compounds and their chirality may considerably affect their bioactive behavior [1, 2]. The demand has been increasing for new analytical methods with high selectivity and efficiency. Chiral separation has become an attractive and important field in the separat...

Journal: :nutrition and food sciences research 0
hossein habibi national nutrition and food technology research institute, shahid beheshti university of medical sciences, tehran, iran abdorreza mohammadi national nutrition and food technology research institute, shahid beheshti university of medical sciences, tehran, iran marzieh kamankesh department of chemistry, faculty of science, iran university of science and technology, tehran, iran

background and objectives: furfural (f) and hydroxymethyl furfural (hmf) are cyclic aldehydes, which are formed during the heat processing of foods. these chemical contaminants have received much attention due to their suspected health hazards and heat damage indicators. the aim of the present study was extraction and determination of f and hmf in baby-foods using dispersive liquid-liquid micro...

Journal: :Chemical & pharmaceutical bulletin 2002
Li-hua Xie Xuan Wang Purusotam Basnet Naoko Matsunaga Seiichi Yamaji Dong-ye Yang Shao-qing Cai Tadato Tani

Micellar electrokinetic chromatography (MEKC) conditions were developed to analyze the constituents of Scutellariae Radix (SR) and Scutellaria baicalensis roots. Using the MEKC method, the major flavonoid constituents of baicalin, baicalein and wogonin of wild and cultivated S. baicalensis roots were compared. In a preliminary comparison of electropherogram, one special peak was found in a wild...

Journal: :Journal of Chromatography & Separation Techniques 2014

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