In:
Journal of AOAC INTERNATIONAL, Oxford University Press (OUP), Vol. 67, No. 3 ( 1984-05-01), p. 569-572
Abstract:
An assay procedure has been developed for virginiamycin in mash-type feeds which includes removing fat interferences from the feeds by a rapid petroleum ether wash, a citric acid extraction, an acetone extraction, and the use of the pad-plate diffusion system. The procedure eliminates the need for compensatory curves prepared from feeds of the same or similar composition. Recoveries from 10 laboratory-prepared feeds containing 11.0 μg virginiamycin/g averaged 89.3% with a coefficient of variation (CV) of 5.76%. Recoveries from a laboratory-prepared feed containing 13.2 μg virginiamycin/g averaged 89.9% (CV 9.92%). The procedure is simple, reasonably accurate, and precise.
Type of Medium:
Online Resource
ISSN:
0004-5756
DOI:
10.1093/jaoac/67.3.569
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
1984
