Carina Pereyra, María Del Pilar Monge, Silvestre Bongiovanni, Andrea Cristofolini, Sergio Campos, Lilia Cavaglieri
{"title":"Kluyveromyces marxianus VM004 培养条件对细胞壁结构的影响及其对黄曲霉毒素 B1 结合力的影响。","authors":"Carina Pereyra, María Del Pilar Monge, Silvestre Bongiovanni, Andrea Cristofolini, Sergio Campos, Lilia Cavaglieri","doi":"10.1016/j.ram.2024.07.004","DOIUrl":null,"url":null,"abstract":"<p><p>The aim of this study was to determine the impact of Kluyveromyces marxianus VM004 culture conditions on the cell wall (CW) structure and its influence on aflatoxin B<sub>1</sub> binding. The yeast was inoculated into two types of culture media: yeast extract-peptone-dextrose (YPD) broth and dried distiller's grains with solubles (DDG). The CW was extracted from the biomass produced in these media. AFB<sub>1</sub> (150ng/ml) adsorption tests using the biomass (1×10<sup>7</sup>cells/ml) and the CW (0.001g) were performed at pH 2 and pH 8. Transmission electron microscopy (TEM) evaluated the CW thickness, and infrared spectroscopy (IR) determined the CW composition. Biomass production in YPD was higher than that in DDG. Cell diameter (μm) and CW thickness (μm) increased in the DDG medium. The CW percentage obtained in DDG was higher than that in YPD. The absorbance of carbohydrates by IR was higher in YPD. pH influenced AFB<sub>1</sub> adsorption, which was lower at pH 8. The proportion of β-glucan and chitin present in CW was higher in the YPD medium. The IR method allowed to study the CW carbohydrate variation under the influence of these carbon sources. In conclusion, the culture media composition influenced the β-glucan and chitin composition and consequently, AFB<sub>1</sub> adsorption.</p>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of Kluyveromyces marxianus VM004 culture conditions on the cell wall structure and its influence on aflatoxin B<sub>1</sub> binding.\",\"authors\":\"Carina Pereyra, María Del Pilar Monge, Silvestre Bongiovanni, Andrea Cristofolini, Sergio Campos, Lilia Cavaglieri\",\"doi\":\"10.1016/j.ram.2024.07.004\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The aim of this study was to determine the impact of Kluyveromyces marxianus VM004 culture conditions on the cell wall (CW) structure and its influence on aflatoxin B<sub>1</sub> binding. The yeast was inoculated into two types of culture media: yeast extract-peptone-dextrose (YPD) broth and dried distiller's grains with solubles (DDG). The CW was extracted from the biomass produced in these media. AFB<sub>1</sub> (150ng/ml) adsorption tests using the biomass (1×10<sup>7</sup>cells/ml) and the CW (0.001g) were performed at pH 2 and pH 8. Transmission electron microscopy (TEM) evaluated the CW thickness, and infrared spectroscopy (IR) determined the CW composition. Biomass production in YPD was higher than that in DDG. Cell diameter (μm) and CW thickness (μm) increased in the DDG medium. The CW percentage obtained in DDG was higher than that in YPD. The absorbance of carbohydrates by IR was higher in YPD. pH influenced AFB<sub>1</sub> adsorption, which was lower at pH 8. The proportion of β-glucan and chitin present in CW was higher in the YPD medium. The IR method allowed to study the CW carbohydrate variation under the influence of these carbon sources. In conclusion, the culture media composition influenced the β-glucan and chitin composition and consequently, AFB<sub>1</sub> adsorption.</p>\",\"PeriodicalId\":21163,\"journal\":{\"name\":\"Revista Argentina de microbiologia\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-09-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Revista Argentina de microbiologia\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1016/j.ram.2024.07.004\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista Argentina de microbiologia","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1016/j.ram.2024.07.004","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MICROBIOLOGY","Score":null,"Total":0}
Impact of Kluyveromyces marxianus VM004 culture conditions on the cell wall structure and its influence on aflatoxin B1 binding.
The aim of this study was to determine the impact of Kluyveromyces marxianus VM004 culture conditions on the cell wall (CW) structure and its influence on aflatoxin B1 binding. The yeast was inoculated into two types of culture media: yeast extract-peptone-dextrose (YPD) broth and dried distiller's grains with solubles (DDG). The CW was extracted from the biomass produced in these media. AFB1 (150ng/ml) adsorption tests using the biomass (1×107cells/ml) and the CW (0.001g) were performed at pH 2 and pH 8. Transmission electron microscopy (TEM) evaluated the CW thickness, and infrared spectroscopy (IR) determined the CW composition. Biomass production in YPD was higher than that in DDG. Cell diameter (μm) and CW thickness (μm) increased in the DDG medium. The CW percentage obtained in DDG was higher than that in YPD. The absorbance of carbohydrates by IR was higher in YPD. pH influenced AFB1 adsorption, which was lower at pH 8. The proportion of β-glucan and chitin present in CW was higher in the YPD medium. The IR method allowed to study the CW carbohydrate variation under the influence of these carbon sources. In conclusion, the culture media composition influenced the β-glucan and chitin composition and consequently, AFB1 adsorption.
期刊介绍：
La Revista Argentina de Microbiología es una publicación trimestral editada por la Asociación Argentina de Microbiología y destinada a la difusión de trabajos científicos en las distintas áreas de la Microbiología. La Asociación Argentina de Microbiología se reserva los derechos de propiedad y reproducción del material aceptado y publicado.
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