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Acta microbiologica Hungarica最新文献

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Distribution of aflatoxin-producing moulds and aflatoxins in dairy cattle feed and raw milk. 产黄曲霉毒素霉菌和黄曲霉毒素在奶牛饲料和原料奶中的分布。
Acta microbiologica Hungarica Pub Date : 1992-01-01
M Skrinjar, R D Stubblefield, I F Vujicić, E Stojanović
{"title":"Distribution of aflatoxin-producing moulds and aflatoxins in dairy cattle feed and raw milk.","authors":"M Skrinjar,&nbsp;R D Stubblefield,&nbsp;I F Vujicić,&nbsp;E Stojanović","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Distribution of aflatoxigenic moulds and aflatoxin B1 in Yugoslav dairy cattle feeds as well as the presence of aflatoxin B1 and M1 in raw milk, was tested. The experiments were carried out through three years (in all seasons). Samples were taken from state and private farms in Vojvodina. Feeds were contaminated in 83-100% with moulds. Fungi of farms in Vojvodina. Feeds were contaminated in 83-100% with moulds. Fungi of Aspergillus flavus-oryzae group were present permanently and the highest incidence of them was noticed during the third research year. Aflatoxin B1 was not found in the first year, but malt spent grains used for cows' feeding in summer of the second research year was contaminated with it (50.0 micrograms/kg). The same feed and pelleted sugar beet pulp were contaminated with aflatoxin B1 in winter, spring and summer of the third research year (5.0 to 16.0 micrograms/kg). Aflatoxin B1 and M1 were not found in raw milk through three-years investigations.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 2","pages":"175-9"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12482147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diazald, a newly recognized antimicrobial agent and its spectrophotometric determination. 新发现的抗菌剂氮唑啉及其分光光度法测定。
Acta microbiologica Hungarica Pub Date : 1992-01-01
J V Uri, F Scola
{"title":"Diazald, a newly recognized antimicrobial agent and its spectrophotometric determination.","authors":"J V Uri,&nbsp;F Scola","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Diazald, a chemical intermediate for the synthesis of biologically active compounds, was found to be a potent in vitro antimicrobial agent against yeasts, yeast-like and filamentous fungi as well as Gram-positive and Gram-negative bacterial strains. Its activity is not inhibited by either para-aminobenzoic acid (PABA) or the nitroso group-specific 2-aminothiazole-methoxyimino acetic acid (ATMAA). This suggests that the molecule as such is responsible for the antimicrobial activity. For its quick measurement a sensitive spectrophotometric method has been developed.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 3-4","pages":"317-22"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12517852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasmids determining enzymatic inactivation of lincomycin in Staphylococcus epidermidis. A preliminary report. 质粒测定表皮葡萄球菌林可霉素酶失活。初步报告。
Acta microbiologica Hungarica Pub Date : 1992-01-01
I Barcs, L Jánosi
{"title":"Plasmids determining enzymatic inactivation of lincomycin in Staphylococcus epidermidis. A preliminary report.","authors":"I Barcs,&nbsp;L Jánosi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Coagulase-negative staphylococcal strains isolated from immunocompromised patients harboured in 41% non-MLS type lincomycin resistance determinant. Two kinds of resistance plasmids were detected in Staphylococcus epidermidis isolates of this origin in connection with lincomycin resistance. One of them represented by pBI1 and pBI84 (1.4 Md in size) determines no other resistance marker. The pBI109PGL plasmid determines also penicillinase production and aminoglycoside resistance, its molecular mass is 31 Md. Hybridization using linA, linA' and linA-like specific gene probes suggested occurrence of genes of lincosamid-inactivating enzyme belonging to the lin gene family but differring from the previously characterized determinants.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 1","pages":"93-101"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12799256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reversion of UV light morphological and colour mutants of Trichoderma viride. 绿木霉紫外光形态和颜色突变体的逆转。
Acta microbiologica Hungarica Pub Date : 1992-01-01
A Fargasová
{"title":"Reversion of UV light morphological and colour mutants of Trichoderma viride.","authors":"A Fargasová","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>By using UV light 13 years ago from Trichoderma viride 8-7 Pers. ex S. F. Gray 82 colour and morphological mutants were prepared. The reversion of these mutants was high and in 1985 only 26 stable mutants (i.e. 32%) could be used for genetic studies. In 1991, from these 26 mutants we had only 6 stable types (i.e. 7.3% from the original state). These mutants were permanently transferred on fresh CzDA medium every 3-4 months and checked for morphology, growth, conidiation, heterokaryons and diploids production. The group of mentioned mutants was enlarged with mutants which were after 3-4 transfers on fresh medium, preserved dried to the present time. The largest differences were observed in microscopic appearance of colonies. Differences between growth rates, intensity of conidiation were comparable with those made 13 years ago.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 3-4","pages":"249-56"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12517139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of kanamycin treatment of rats on the development of gastro-intestinal syndrome of radiation disease. 卡那霉素治疗大鼠对放射病胃肠综合征发生的影响。
Acta microbiologica Hungarica Pub Date : 1992-01-01
L Bertók, L B Sztanyik, L Bertók
{"title":"The effect of kanamycin treatment of rats on the development of gastro-intestinal syndrome of radiation disease.","authors":"L Bertók,&nbsp;L B Sztanyik,&nbsp;L Bertók","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Kanamycin pretreatment through stomach tube eliminates the endotoxin producing Gram-negative bacteria of the intestinal flora and can delay the death of rats suffering from gastro-intestinal syndrome of radiation disease. Endotoxins probably play a significant role in the pathological process of the syndrome.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 2","pages":"155-8"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12482276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of microbial immunomodulants on the course of LCMV infection in old mice with thymus involution. 微生物免疫调节剂对胸腺退化老年小鼠LCMV感染过程的影响。
Acta microbiologica Hungarica Pub Date : 1992-01-01
I Szeri, P Anderlik, Z Bános, Z Barna
{"title":"Effect of microbial immunomodulants on the course of LCMV infection in old mice with thymus involution.","authors":"I Szeri,&nbsp;P Anderlik,&nbsp;Z Bános,&nbsp;Z Barna","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Old mice with thymus involution were treated intraperitoneally with a live vaccine containing a mesogenic strain of attenuated Newcastle Disease Virus or with Mannozym (M, 1% zymosan suspension). One day after the treatments mice were infected with lymphocytic choriomeningitis virus (LCMV) intracerebrally. The fatal course of the consequent LCMV infection was stimulated by each of the pretreatments, indicating that the cellular immune response was stimulated. The results are compared with results of experiments carried out on suckling, young adult and old mice in similar experimental systems. The authors' previous publication suggesting that the direction and degree of the immunomodulant effect may be influenced by the actual age-dependent condition of the lymphoid system, have been confirmed.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 1","pages":"13-9"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12797857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anthraquinone pigments production by brown mutant Trichoderma viride M-108 under various nutrition conditions. 不同营养条件下棕色突变体绿木霉M-108生产蒽醌类色素的研究
Acta microbiologica Hungarica Pub Date : 1992-01-01
A Fargasová
{"title":"Anthraquinone pigments production by brown mutant Trichoderma viride M-108 under various nutrition conditions.","authors":"A Fargasová","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In this work the influence of 12 carbon and 9 nitrogen sources on pigment production of brown mutant Trichoderma viride M-108 was tested. There were two concentrations of nutrient sources used and the tests were carried out in three light regimes. The pigmentation was good only on media containing sodium nitrate, sodium nitrite, sucrose, starch and glycerol and there was no pigment production on media with adenine, ammonium chloride and ammonium sulphate. In mixtures of pigments, individual compounds were determined by using thin-layer chromatography and UV spectra of colour fractions.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 3-4","pages":"241-7"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12517138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Mannozym on the course of LCMV infection in mice with undeveloped and normal immune system. 甘露酶对免疫系统不发达和正常小鼠LCMV感染过程的影响。
Acta microbiologica Hungarica Pub Date : 1992-01-01
P Anderlik, I Szeri, Z Bános, Z Barna
{"title":"Effect of Mannozym on the course of LCMV infection in mice with undeveloped and normal immune system.","authors":"P Anderlik,&nbsp;I Szeri,&nbsp;Z Bános,&nbsp;Z Barna","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Adult germfree (Gf) mice with undeveloped immune system due to antigen deficient environment, conventional (Cv) mice with normal immune system and Cv suckling mice with undeveloped immune system due to age were treated intraperitoneally with Mannozym (M, 0.1% zymosan suspension) 4 days or 4 days and 1 day before the intracerebral inoculation with lymphocytic choriomeningitis virus (LCMV). One dose of M was equal to 40 mg/kg of zymosan. In suckling mice, both applied doses of M contributed the development of fatal lymphocytic choriomeningitis after infection with 100 LD50 dose of LCMV, thus M pretreatment increased the cellular immune response to LCMV infection. M pretreatments had no influence on the course of LCMV infection either in adult Gf or in Cv mice. Spleen hypertrophy was caused by applied doses of M both in adult (Gf and Cv) and Cv suckling mice, but modulating effect on the cellular immune response manifested simultaneously only in Cv sucklings.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 1","pages":"3-11"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12797859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Differences and similarities in the sensitivity of lymphocytic and macrophage plasma membrane to deoxycholate. 淋巴细胞和巨噬细胞质膜对脱氧胆酸盐敏感性的异同。
Acta microbiologica Hungarica Pub Date : 1992-01-01
A Hrabák, F Antoni, M T Szabó, I Csuka
{"title":"Differences and similarities in the sensitivity of lymphocytic and macrophage plasma membrane to deoxycholate.","authors":"A Hrabák,&nbsp;F Antoni,&nbsp;M T Szabó,&nbsp;I Csuka","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Human tonsillar lymphocytes separated on nylon wool and rat macrophages showed different sensitivity to deoxycholate (DOC) treatment at a low (0.24 mM, 0.01%) concentration for 3 h. The T cell-enriched fraction was stimulated more readily by PHA whereas the B-cell enriched fraction lost its adherence and a decrease of chromium binding capacity was observed after the detergent treatment. Rat peritoneal macrophages under the same conditions lost their chromium label and lysozyme content, whereas their adherence and phagocytic capacity decreased dramatically without affecting their binding capacity. Higher sensitivity to the detergent was observed in peritoneal macrophages compared to tonsillar lymphocytes when various DOC concentrations were used. These findings proved that this low concentration DOC treatment, at least in macrophages, touched mainly the adhesive proteins and the dynamics of the membrane and not its receptor-associated properties.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 1","pages":"75-84"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12799254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ochratoxigenicity of Aspergillus ochraceus group and Penicillium verrucosum var. cyclopium strains on various media. 赭曲霉群和疣状青霉在不同培养基上的产氧性。
Acta microbiologica Hungarica Pub Date : 1992-01-01
M Skrinjar, G Dimić
{"title":"Ochratoxigenicity of Aspergillus ochraceus group and Penicillium verrucosum var. cyclopium strains on various media.","authors":"M Skrinjar,&nbsp;G Dimić","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Production of ochratoxin A (OA) by strains of Aspergillus ochraceus group (A. ochraceus--21, A. sclerotiorum--1, A. sulphureus--1) and Penicillium verrucosum var. cyclopium strains--11, on various media was investigated. Thirteen percent of A. ochraceus strains and 18% of P. verrucosum var. cyclopium formed OA growing on sterile crushed wheat for 14 days at 25 to 27 degrees C (preliminary experiments). Toxin concentrations were 5.0 to 7.0 micrograms/kg. Five strains OA-positive on crushed wheat and four OA-negative strains were cultivated on various liquid nutritional media (YES, RM, OAT, CG and AFP). All the strains tested, including OA-negative ones, produced OA on certain liquid media. Concentrations of OA were low again (trace to 16.0 micrograms/l). The largest number of mould strains examined produced OA on YES (55.5%) and RM media (44.0%), but the highest concentration (16.0 micrograms/l) was formed on YES and CG media.</p>","PeriodicalId":76970,"journal":{"name":"Acta microbiologica Hungarica","volume":"39 3-4","pages":"257-61"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12517140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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