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29 Newest Publications about the topic light scattering detectors

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Improvement of Total Lipid and Glycerophospholipid Recoveries from Various Food Matrices Using Pressurized Liquid Extraction

15-Sep-2010 | Li Zhou; Julie Le Grandois; Eric Marchioni; Minjie Zhao; Saïd Ennahar; Françoise Bindler, Journal of Agricultural and Food Chemistry, 2010

The extraction of three major phospholipid (PL) classes contained in soybean, egg yolk, calf brain, and ox liver was investigated by means of two methods. The PL amounts were evaluated. A new method, based on pressurized liquid extraction (PLE), was applied for total lipids (TL), including PL, ...

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Improvement of Total Lipid and Glycerophospholipid Recoveries from Various Food Matrices Using Pressurized Liquid Extraction

15-Sep-2010 | Li Zhou; Julie Le Grandois; Eric Marchioni; Minjie Zhao; Saïd Ennahar; Françoise Bindler, Journal of Agricultural and Food Chemistry, 2010

The extraction of three major phospholipid (PL) classes contained in soybean, egg yolk, calf brain, and ox liver was investigated by means of two methods. The PL amounts were evaluated. A new method, based on pressurized liquid extraction (PLE), was applied for total lipids (TL), including PL, ...

more

Asphaltene Stability in Crude Oils and Petroleum Materials by Solubility Profile Analysis

19-Aug-2010 | Estrella Rogel; Cesar Ovalles; Michael Moir, Energy & Fuels, 2010

A new method to evaluate the colloidal stability of crude oils and related products was developed on the basis of the evaluation of the solubility profile or solubility distribution of asphaltenes in these materials. The new method uses an on-column precipitation coupled with an evaporative light ...

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Alternatives to amino acid analysis for the purity control of pharmaceutical grade L‐alanine

01-Aug-2010 | Ulrike Holzgrabe, Cees-Jan Nap, Tanja Beyer, Stefan Almeling; Ulrike Holzgrabe; Cees‐Jan Nap; Tanja Beyer; Stefan Al ..., Journal of Separation Science, 2010

The quality control of drugs is important for safety of patients and consumers. International pharmacopoeias mostly employed HPLC with UV detection for this purpose. This is always a problem when the drugs, such as most amino acids, are lacking a chromophor. Instead of UV detection, the impurity ...

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Quantification in the analysis of polyethylene glycols and their monomethyl ethers by liquid adsorption chromatography with different detectors

08-Jun-2010 | Bernd Trathnigg, Hasnat Ahmed, Analytical and Bioanalytical Chemistry, 2010

It is shown that the molar mass distribution of polyethylene glycols (PEGs) and their monomethyl ethers can be determined by liquid adsorption chromatography (LAC) on reversed phases using isocratic or gradient elution. In gradient LAC, the evaporative light scattering detector (ELSD) has to be ...

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2‐D chromatography with optimized size exclusion chromatography resolution and multi‐angle light scattering coupling

01-Jun-2010 | Moyses, Stephan, Journal of Separation Science, 2010

2-D chromatography has become an important tool for the polymer chemist and engineer interested in understanding reaction mechanisms in multiple step polymerization reactions and for establishing the relationships between structure and property. As with 1-D chromatography, it is desirable to ...

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Application of triacylglycerol and fatty acid analyses to discriminate blended sesame oil with soybean oil

28-Apr-2010 | Young Woo, Park , Pahn-Shick, Chang , JaeHwan, Lee, Food Chemistry, 2010

Triacylglycerols (TAGs) and fatty acids in the mixture of sesame oil (SO) with soybean oil were analyzed using high performance liquid chromatography (HPLC)- an evaporative light scattering detector (ELSD) and gas chromatography (GC)- a flame ionization detector (FID). Relative percentage of ...

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Characterization of Triterpenic Acids in Fruits of Ziziphus Species by HPLC-ELSD-MS

28-Apr-2010 | Sheng Guo; Jin-Ao Duan; Yu-Ping Tang; Nian-Yun Yang; Da-Wei Qian; Shu-Lan Su; Er-Xin Shang, Journal of Agricultural and Food Chemistry, 2010

The fruits of Ziziphus species have been utilized as food as well as crude drugs for their health benefits in China for thousands of years. This paper reported a reversed-phase high-performance liquid chromatography (HPLC) method for the simultaneous characterization and quantitation of 11 ...

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Composition of phospholipid fraction in raw chicken meat and pre-cooked chicken patties: influence of feeding fat sources and processing technology

15-Mar-2010 | Federico Ferioli, Maria Fiorenza Caboni, European Food Research and Technology, 2010

The effect of dietary lipid sources (animal fat, AF vs. vegetable oil, VO) was investigated on the phospholipid (PL) fraction of raw chicken meat and pre-cooked chicken patties. PL classes were determined on extracted lipids by high-performance liquid chromatography (HPLC) connected with an ...

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