Determination of choline in Enternal Nutrition,Amino Acid,
Elental by spectrophotometry
ABSTRACT
In this paper, the absorbance of choline in Enternal Nutrition,Amino Acid, Elental solution was measured by spectrophotometry at the wavelength 500 nm. The results showed that there was a good linear relationship (r = 0.9997) between the absorbance and concentration at the range of 2.5~12.7μg/ml, and the recovery was at the range of 95.33-104.05%(RSD =2.8%). This method was approved to have good reproducibility and stability which was applied to measure the phosphatidylcholine content in Enternal Nutrition,Amino Acid, Elental which was recommended from Japan.