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Química Nova  2008 

Desenvolvimento de metodologia analítica para determina??o de colesterol em ra??o para ruminantes através de planejamento experimental fatorial

DOI: 10.1590/S0100-40422008000600027

Keywords: gc, extraction, validation.

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a chromatographic method was developed for cholesterol determination in feed for ruminants using response surface methodology. among the five approaches of sample preparation methods tested, the saponification of the sample without heating presented less interference in the gas chromatography. the method presented a relative standard deviation (rsd) of 4.3%, recoveries between 84 and 87% and detection limit of 0.001 mg of cholesterol per g of feed.


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