V. Chandan et al., SIMPLE EXTRACTION OF CAMPYLOBACTER LIPOPOLYSACCHARIDE AND PROTEIN ANTIGENS AND PRODUCTION OF THEIR ANTIBODIES IN EGG-YOLK, International journal of food microbiology, 22(2-3), 1994, pp. 189-200
Antigens were heat extracted from Campylobacter jejuni (LI04) and C co
li (LI020) in the presence of ethylenediaminetetraacetate (EDTA) and w
ere recovered in the supernatant of a low-speed centrifugation. The me
thod is simpler, safer and more efficient in extracting lipopolysaccha
ride (LPS) antigens than the hot phenol method. The extracted antigens
(LPS plus several proteins) elicited production of antigen-specific a
ntibodies in the egg yolk of immunized hens. Antibodies purified by po
lyethyleneglycol fractionation were used to detect antigens fractionat
ed on SDS polyacrylamide gel electrophoresis.