News Column

New Biochemistry and Biotechnology Findings from Swedish University of Agricultural Sciences Discussed

June 24, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Biochemistry and Biotechnology. According to news reporting from Umea, Sweden, by NewsRx journalists, research stated, "Sawdust can be used to make pellets (biofuel) and particle boards and as a potential lignocellulose feedstock in bioethanol production. Microbial activity can affect sawdust quality; hence, we monitored the microbial population in birch- and spruce sawdust after 3 months' storage at various temperatures."

The news correspondents obtained a quote from the research from the Swedish University of Agricultural Sciences, "Species composition was similar on both materials but was strongly influenced by temperature. Bacteria were present on all materials at all conditions: on birch, 2.8x10(8), 1.1x10(8), and 8.8x10(6), and on spruce, 4.1x10(8), 5.6x10(7), and 1.5x10(8)CFU/g DM, at 2, 20, and 37 degrees C, respectively. Dominant bacteria at 2, 20, and 37 degrees C were Pseudomonas spp. (some Enterobacteriaceae spp. present), Luteibacter rhizovicinus, and Fulvimonas sp., respectively. Pseudomonas spp. were absent at 20 degrees C. Among microfungi, yeasts dominated at 2 degrees C but were absent at 37 degrees C, whereas molds dominated at 20 and 37 degrees C. Common yeasts included Cystofilobasidium capitatum, Cystofilobasidium infirmominiatum, Candida saitoana, Candida oregonensis, and Candida railenensis."

According to the news reporters, the research concluded: "Ophiostoma quercus was a common mold at 2 and 20 degrees C, whereas the human pathogens Aspergillus fumigatus and Paecilomyces variotii dominated at 37 degrees C. Attempts to influence the microflora by addition of the biocontrol yeasts, Wickerhamomyces anomalus and Scheffersomyces stipitis, were unsuccessful, as their growth in sawdust was poor to absent."

For more information on this research see: Temperature-dependent changes in the microbial storage flora of birch and spruce sawdust. Biotechnology and Applied Biochemistry, 2014;61(1):58-64. Biotechnology and Applied Biochemistry can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell -; Biotechnology and Applied Biochemistry -

Our news journalists report that additional information may be obtained by contacting J. Blomqvist, Swedish University of Agricultural Science, Div Biomass Technol & Chem, S-90183 Umea, Sweden. Additional authors for this research include S.L.L. Leong, M. Sandgren, T. Lestander and V. Passoth (see also Biochemistry and Biotechnology).

Keywords for this news article include: Umea, Sweden, Europe, Biochemistry and Biotechnology

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Source: Life Science Weekly

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