摘要:

ABSTRACTResults obtained with tetrathionate broth (TBB) using the standard method and Rappaport‐Vassiliadis medium (RV) did not differ markedly with respect to the proportion of positive samples or the sero‐ and phage types of salmonellae isolated from minced beef and pork. TBB, based on the commercial dehydrated medium of Oxoid (CM 343), gave fewer positive samples while that of Merck (Art. No. 5172) was equivalent to RV. In individual experiments results were sometimes markedly different. Results obtained for reference samples of minced meat, with salmonellae added, demonstrated that the chances of detecting salmonellae increase with increasing numbers present initially. At the same time it was also demonstrated that the presence of minced meat and its competing microflora have an unpredictable effect on the detection of salmonel

ISSN:0149-6085    

DOI:10.1111/j.1745-4565.1986.tb00547.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

ABSTRACTThe distribution and elimination of %H‐ochratoxin A was studied in pregnant rats following s.c. administration of a single dose of 2.5 mg/kg on day 12 of gestation. Elimination of radioactivity from serum was biphasic. The overall elimination (beta) half life was 55.88 h. Fecal elimination of radioactivity accounted for 29.1% of the total radioactivity in the first 24 h and 36.2% in 48 h. Radioactivity in the urine accounted for 6.7% of the total at 24 h and 8.6% at 48 h. Thin‐layer chromatography (TLC) of whole fetal extracts demonstrated the presence of the parent compound 12 h after maternal dosing, with peak fetal levels (64.2 ng/g) occurring at 48 h. Virtually all of the radioactivity from the extracts was equivalent to ochratoxin A by TLC. No metabolic congeners of ochratoxin were detected in fetal tiss

ISSN:0149-6085    

DOI:10.1111/j.1745-4565.1986.tb00548.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

ABSTRACTA Holstein cow was given a single, oral dose of T‐2 toxin (200 mg), and blood and urine samples were collected at regular time intervals for 48 h. The animal was dosed once more with the same amount and samples were again collected over another 48 h period. Trace amount (2 ppb) of T‐2 toxin was detected in the blood up to 24 h as well HT‐2, TC‐3, and T‐2 tetraol. De‐epoxy‐T‐2‐tetraol was detected in the blood and urine up to 48 h. No T‐2 could be found in the urine but HT‐2, TC‐1, TC‐3 and T‐2‐tetraol were detected. In addition, three major metabolites, i.e., iso TC‐1, de‐epoxy‐TC‐3 and de‐epoxy‐T‐2 tetraol, were found in the urine. Production of these metabolites was maximum at 14–20 h after administration of the toxin. No substantial accumulation of T‐2 toxin derivatives were found in the lung, heart, liver or kidney when the

ISSN:0149-6085    

DOI:10.1111/j.1745-4565.1986.tb00549.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

ABSTRACTAn analytical survey was conducted of the nitrate, cadmium and selenium content of baby foods containing fruits, vegetables or meats. Those containing greenbeans, beets, carrots, spinach, squash and mixed vegetables were notably higher in nitrate ranging up to 5228 ppm (dry weight) in squash. Among the vegetables, beets, carrots and spinach were highest in cadmium, with carrots containing 2467 ppb. Selenium was consistently higher in meats and vegetables. Fruit‐containing baby foods were lowest in all three constituents measured. The epidemiologic health implications of this study are discusse

ISSN:0149-6085    

DOI:10.1111/j.1745-4565.1986.tb00550.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0149-6085    

DOI:10.1111/j.1745-4565.1986.tb00551.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0149-6085    

DOI:10.1111/j.1745-4565.1986.tb00552.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY