Search Results

You are looking at 1 - 10 of 518 items for :

  • "cholesterol" x
  • Refine by Access: All Content x
Clear All

): Determination of cholesterol oxides in dairy products. Effect of storage conditions. J. agric. Fd Chem. , 45 , 4318-4323. Determination of cholesterol oxides in dairy products. Effect of storage conditions

Restricted access
Acta Alimentaria
Authors: N. Parunović, M. Petrović, V. Matekalo-Sverak, D. Radojković, D. Vranić, and Č. Radović

1990 Bohac, C.E. & Rhee, K.S. (1988): Influence of animal diet and muscle location on cholesterol content of beef and pork muscles

Restricted access

) Fletouris , D.J. , Botsoglou , A. & Psomas , I.E. ( 1998 ): Rapid determination of cholesterol in milk and milk products by direct saponification and capillary gas chromatography . J. Dairy Sci. , 81 , 2833 – 2840

Restricted access

Abstract  

The standard molar enthalpy of combustion of cholesterol was measured at constant volume. According to value of Δr U m θ(−14358.4±20.65 kJ mol−1), Δr H m θ(−14385.7 kJ mol−1) of combustion reaction and Δf H m θ(2812.9 kJ mol−1) of cholesterol were obtained from the reaction equation. The enthalpy of combustion reaction of cholesterol was also estimated by the average bond enthalpies. By design of a thermo-chemical recycle, the enthalpy of combustion of cholesterol were calculated between 283.15∼373.15 K. Besides, molar enthalpy and entropy of fusion of cholesterol was obtained by DSC technique.

Restricted access

Altmann, S. W., Davis, H. R. Jr., Zhu, L. J. és mtsai: Niemann-Pick C1 Like 1 protein is critical for intestinal cholesterol absorption. Science, 2004, 303 , 1021

Restricted access

513 Donmez, M. (2009): Determination of fatty acid compositions and cholesterol levels of some freshwater fish living in Porsuk Dam Lake, Turkey. Chem. Nat. Compounds , 45

Restricted access

Ahluwalia, P. and Malik, V. B. T. (1989): Effects of monosodium glutamate (MSG) on lipids, blood glucose and cholesterol in adult male mice. Toxicol. Lett. 45 , 195

Restricted access

Daniels, T. F., Killinger, K. M., Michal, J. J. és mtsai: Lipoproteins, cholesterol homeostasis and cardiac health. Int. J. Biol. Sci., 2009, 5 , 474

Restricted access

Summary

A method for determining underivatized cholesterol and its oxygen derivatives (ChlOs) in animal tissue specimens and some food has been developed using capillary gas chromatography (GC) and mass spectrometry (MS) with 5α-cholestane as the internal standard. The analysis preparation procedure for cholesterol and ChlOs consisted of lipid extraction followed by gentle saponification using 2 M KOH in ethanol. The analyzed samples were saponified overnight at room temperature in the dark with shaking. Then, free cholesterol and ChlOs were extracted using diethyl ether. The extracts were dried under argon, and the residues were redissolved in chloroform before GC-MS analysis. Cholesterol was analyzed in biological materials using the short column temperature program. The simultaneous quantification of cholesterol and its oxides in biological materials was performed using the longer column temperature program. Cholesterol was eluted faster than ChlOs. The chromatographic method that used column temperature program A can be successfully used for the simple and rapid quantification of cholesterol in biological materials, while the method using column temperature program B is more suitable for the simultaneous quantification of cholesterol and its oxides in biological materials.

Full access
Orvosi Hetilap
Authors: Krisztina Kőhalmy, Damjana Rozman, Jean-Marc Pascussi, Enikő Sárváry, and Katalin Monostory

349 Fon Tacer, K., Haugen, T. B., Baltsen, M. és mtsai: Tissue-specific transcriptional regulation of the cholesterol biosynthetic pathway leads to accumulation of testis

Restricted access