Search PubMed⌕ Search

Biomedical subjects

M Wiewiórowska

Publications and source records attributed to M Wiewiórowska.

At least 19 recordsLinked to original sources
PubMed1996

Biosynthesis of gibberellic acid (GA3) and mycotoxins by F. moniliforme sheldon and other species of Liseola section.

F. moniliforme and other species of Liseola section, F. culmorum, F. dlamini, and F. nygamai, were examined for their ability to produce gibberellic acid (GA3), fumonisins, trichothecenes, zearalenone, moniliformin, and bikaverin (TLC method). Gibberellic acid was produced by F. moniliforme strains in liquid medium and on rice kernels with a maximum concentration level of 470 mg/dm3 and 1 g/kg, respectively. No strain isolated in Poland produced GA3. High-yielding gibberellic acid strains produced neither trichothecenes and fumonisins nor other tested compounds. Also the rest of strains of examined species did not produce trichothecenes and other mycotoxins except for fumonisins which were found in rice cultures of F. moniliforme, F. proliferatum, and F. subglutinans. Bikaverin was produced by F. moniliforme always together with fumonisins. Filtrates of liquid cultures of gibberellin producing strains were tested for their toxicity to brine shrimps larvae (Artemia salina). It was found that GA3 presence does not increase toxicity of these filtrates.

Animals↗
PubMed1987

Mycotoxins in cereal grain. Part 12. Contamination with ochratoxin A and penicillic acid as indicator of improper storage of cereal grain.

Formation of ochratoxin A and penicillic acid in wheat kernels at 6 moisture levels: 15, 18, 21, 24, 27 and 30% at 15 degrees C has been examined during 4 months of storage. The minimum time for formation of significant amount (0.5-1 mg/kg) of ochratoxin A and penicillic acid (6-8 mg/kg) in stored grain has been found for the various water contents as follows: 18%-16 weeks, 21%-6 weeks, 24% and more - 2 weeks. At 15% of moisture content formation of ochratoxin A and penicillic acid was not observed until 4 months of storage.

Caproates↗
PubMed1983

Mycotoxins in cereal grain. Part IX. Zearalenone and Fusaria in wheat, barley, rye and corn kernels.

Toxigenic Fusaria, producing zearalenone, appeared in 31% of cereal grain samples. However zearalenone was present only in 0.5% of 584 cereal samples assayed during 1979-1981 at level 0.2-1.2 mg/kg. Fungi able to form zearalenone were present mainly in grain collected from breeding stations. Fusarium culmorum was dominant among toxigenic isolates from domestic cereals and yield of zearalenone was up to 700 mg/kg.

Animal Feed↗
PubMed1982

Mycotoxins in cereal grain. Part 5. Changes of cereal grain biological value after ammoniation and mycotoxins (ochratoxins) inactivation.

Ammoniation was proved to be a suitable detoxification procedure to remove toxicity of Aspergillus ochraceus mycotoxins (mainly ochratoxin A) from contaminated cereal grain (corn, wheat and barley). It was found that ammoniation should be performed to achieve decomposition of ochratoxin A to nondetectable level. Ammoniated grain can be used as feedstuff component without essential change of nutritive value during ammoniation.

Ammonia↗
PubMed1982

[Sick person].

Explore the source record for details and available documents.

Nurse-Patient Relations↗
PubMed1981

Mycotoxins in cereal grain. Part IV. Inactivation of ochratoxin A and other mycotoxins during ammoniation.

Addition of ammonia to final concentration 2% inactivates ochratoxin A, aflatoxin, citrinin, penicillic acid and partially zearalenon at temperature 20-50 degrees C. Detoxification of contaminated cereal grain (wheat, corn or barley) can be performed on a farm using ammoniation without special investment during 4 to 6 weeks. Ammoniation changes nutritional value of grain as feed in a small extent.

Ammonia↗