11/28/2023 0 Comments Bovine hidesAcinetobacter and Alkalibacillus, members of the core microbiome of raw and well-cured salted hides, are suggested as hide contaminant inhibitors that need further analysis. It was concluded that hide contaminations were driven by clonal outbreaks of a few specific microbes, which may have been non-pigmented collagen degraders. Putative degrading inhibitors were also identified from among the Alkalibacillus isolates. Resumen: en May 2023 Hides equino y bovino en Estados Unidos contabilizaron exportaciones hasta 71,8M y las importaciones representaron hasta 972k, resultando en un positivo balance comercial de 70,8M. The results showed that hides enriched with the non-pigmented isolate Halomonas utahensis COIN160 damaged the collagen fibers similarly to Halorubrum, and together they were considered to be one of the major causes. The major contaminants were isolated and hide infections, together with collagenase activity, were evaluated. Halobacteria, mainly Halovenus, Halorubrum and Halovivax, increased by up to 36.24-39.5% in the red- and purple-affected hides. In damaged hides, only a few operational taxonomic units (OTUs), from among the hundreds detected, were able to proliferate and, remarkably, a single Halomonas OTU represented 57.66% of the reads. In addition, archaea were missing from well-cured hides, whereas Psychrobacter and Acinetobacter were highly represented (23% and 17.4%, respectively). Entre 2020 y 2021 las exportaciones de Hides Equino y Bovino bronceado grew en un 30,8, desde 11,7MM a 15,3MM. Comparison of raw hides and correctly cured hides revealed a core microbiome that was absent from contaminated hides. ![]() To understand the basis of these industrial hide contaminations, the microbial community from raw hide samples, salt-cured samples and four different industrial salts, was analyzed by 16S rRNA gene metabarcoding together with standard cultivation methods. To ensure full traceability, gelatine is generally produced in batches. However, halophiles may proliferate and affect the integrity of the hide-collagen structure, as well as leading to undesirable red colorations or less-frequent purple stains. Pig skin and bovine hides, as well as pig and bovine bones, are processed separately. The leather-making industry is an age-old industry and desiccation with salt has been one of the most used methodologies for obtaining valuable skins.
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