Characterization of antimicrobial effect of organotin-based catalysts on diesel–biodiesel deteriogenic microorganisms
作者： Rodolfo Ribas , Juciana Clarice Cazarolli , Eid Cavalcante da Silva , Mario Roberto Meneghetti , Simoni Margareti Plentz Meneghetti
DOI: 10.1007/S10661-020-08744-X
关键词:
摘要: Organotin compounds are applied in several industrial reactions and can present antifungal antibacterial activities. Incorrect handling storage practices of biodiesel diesel–biodiesel blends lead to microbial development, impacting its final quality. Concerning this problem, work investigated the antimicrobial action two organotin catalysts used production with four isolated microroorganisms (Bacillus pumilus, Pseudomonas aeruginosa, Pseudallescheria boydii, Aureobasidium pullulans) a pool microorganisms (ASTM E1259 standard practice). Samples soybean different concentrations dibutyl tin dilaurate (catalyst 1) di-n-butyl-oxo-stannane 2) were prepared added mineral medium. The was inoculated incubated at 30 °C biomass weighted after 14 days. Thereafter, catalyst 2 used. Fungal weighted, plate count assess bacterial growth. Results show that 1 presented no inhibitory activity on evaluated. A slight observed for B. pumilus A. pullulans growth, but not P. or microorganisms. All experiment exhibited acidification higher than sterile control. Infrared analysis less microbiological degradation products tin-protected fuel ASTM inoculum. These results suggest these tin-based toxic effect native population some laboratory scale first time shows be employed safely as catalyst.
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