[Determination of 5 kinds of fish anesthetics residues in fish by ultra-high performance liquid chromatography-tandem mass spectrometry].

Objective: A method for the simultaneous determination of 5 kinds of fish anesthetics residues in fish has been developed by ultra-high performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS). Eugenol, methyl-eugenol, methyl-isoeugenol, acetyl-isoeugenol and tricaine methanesulfonate(MS-222) were concerned.

Methods: After homogenization fish samples were extracted by acetonitrile-water(80↿0, V/V), purified by Oasis PRiME HLB solid-phase extraction column.

[Colorimetric detection of trace mercury in mineral water via cloud-pointextraction coupled with gold nanoparticle probe].

Objective: To developed a method for rapid visual and colorimetric detection of trace high toxicity element mercury( Hg~(2+)) in natural mineral water via coupling cloud-point extraction with gold nanoparticle probe.

Methods: The concentration of Hg~(2+)was quantified via the color degree of the Triton X-114 phase. The functionalized gold nanoparticle probe was synthesized and purified.

Cinnamon extract lowers glucose, insulin and cholesterol in people with elevated serum glucose.

Cinnamon ( ròu guì) has insulin potentiating activity, and proanthocyanidins from cinnamon prevent formation of advanced glycation end products. Some human studies were equivocal, but several have shown beneficial effects of cinnamon supplementation on circulating glucose, lipids, and/or insulin. This placebo-controlled double-blind trial tested the effects of a dried water extract of cinnamon () on circulating glucose, lipids, insulin, and insulin resistance.

[Determination of vitamin D in calcium fortified foods using solid-phase extraction-high performuance liquid chromatography].

A method for the determination of vitamin D in calcium fortified foods using solid-phase extraction-high performance liquid chromatography has been developed. The Chromabond XTR solid-phase extraction column (14,500 mg, 70 mL) was used to extract and clean-up the sample. The calibration curve of vitamin D showed good linearity in the range of 0.

[Study on the acryl amide intake in the Beijing diet].

Objective: A 24-hours recall study was performed to get the acryl amide intake in the Beijing diet.

Methods: 24 separate items bought in the Beijing Market were analyzed and 2460 diet lists (820 participants x 3 days) were calculated.

Results: The following mean intakes of acryl amide have been estimated (microg/dm): males 18.

[Study on the absorption, distribution and excretion of 3-chloro-1,2-propandiol in rats].

Objective: To explore the absorption, distribution and excretion of 3-Chloro-1,2-propandiol (3-MCPD) in healthy male SD rats after oral administration.

Methods: 3-MCPD was administrated with a single oral dosage of 75 mg/kg BW to each rat. Samples of blood, tissues (including liver, kidney, brain and testicle) and excreta were then collected, and analyzed by the GC-MS method to determine 3-MCPD concentrations.

[Determination of total lovastatin in red rice].

In order to text effectiveness and safety of red rice products, the determination of total lovastatin is more optional than that of determination of its lactone only. The method for determination of total lovastatin is established in this study. HPLC method is applied with the C18 column (250 mm x 4.