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The Nutrient Content of High and Low Quality Fresh Eggs

Authors :
Elizabeth Dyar
H. S. Wilgus
L. W. Charkey
Source :
Poultry Science. 26:626-631
Publication Year :
1947
Publisher :
Elsevier BV, 1947.

Abstract

IN AN attempt to relate the quality of eggs to their chemical composition, eggs of high and low albumen quality were assayed comparatively for their content of certain vitamins. Procedures for the selection and handling of samples are detailed in the previous paper, as is also the uniform procedure for digestion and extraction of subsamples for microbiological assays. Nicotinic acid was determined by the method of Krehl, Strong and Elvehjem (1943), using Lactobacillus arabinosus 17-5 as the test organism. Apparent * folic acid and apparent* pyridoxine were measured with Streptococcus faecalis, by modifications, of the methods of Luckey, Briggs and Elvehjem (1944) and of Snell, Guirard and Williams (1942), respectively. In all microbiological assays folic acid added was the pure synthetic material. † Carotene was determined colorimetrically in a washed, dried petroleum ether extract of the saponified yolk samples. Vitamin A was measured colorimetrically also, following addition of the Carr-Price (1926) reagent . . .

Details

ISSN :
00325791
Volume :
26
Database :
OpenAIRE
Journal :
Poultry Science
Accession number :
edsair.doi.dedup.....27ee1ef0aee15590193fcd8ce1f0c505
Full Text :
https://doi.org/10.3382/ps.0260626