Oxford University Press (OUP)
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Effects of Vitreoscilla hemoglobin on the 2,4-dinitrotoluene (2,4-DNT) dioxygenase activity of Burkholderia and on 2,4-DNT degradation in two-phase bioreactors
Oxford University Press (OUP) - Tập 30 - Trang 362-368 - 2003
Expression of vgb, encoding Vitreoscilla hemoglobin (VHb), in Burkholderia strain YV1 was previously shown to improve cell growth and enhance 2,4-dinitrotoluene (2,4-DNT) degradation compared with control strain DNT, especially under hypoxic conditions. In the work reported here, the ratio of 2,4-DNT degraded to oxygen uptake was approximately 5-fold larger for strain YV1 than for strain DNT. The...... hiện toàn bộ
Purification and characterization of a novel haemagglutinin from Chlorella pyrenoidosa
Oxford University Press (OUP) - Tập 33 - Trang 967-973 - 2006
We previously identified a strong haemagglutination activity in the freshwater unicellular green alga, Chlorella pyrenoidosa. Here, we sought to purify and characterize the haemagglutinin associated with this activity. Ammonium sulfate precipitation, gel filtration on sephacryl S-200 and DEAE-Sepharose ion-exchange chromatography were used to purify the haemagglutinin, which was designated CPH (Ch...... hiện toàn bộ
Bioconversion of glycerol to 1,3-propanediol in thin stillage-based media by engineered Lactobacillus panis PM1
Oxford University Press (OUP) - Tập 41 - Trang 629-635 - 2014
Thin stillage (TS) is a waste residue that remains after bioethanol production, and its disposal reflects the high costs of bioethanol production. Thus, the development of cost-effective ways to process TS is a pending issue in bioethanol plants. The aim of this study was to evaluate the utilization of TS for the production of the valuable chemical, 1,3-propanediol (1,3-PDO), by Lactobacillus pani...... hiện toàn bộ
Cellulose degradation by a mixed bacterial culture
Oxford University Press (OUP) - Tập 2 - Trang 257-265 - 1987
An integrated mixed bacterial culture consisting of four strains has been isolated by a batch enrichment technique. The cellulolytic member (strain D) is aCellulomonas sp. and the others are non-cellulolytic. The interaction between strains D and C is pronounced and appears to involve an exchange of reducing sugars and growth factors. The symbiotic relationship of this naturally occurring mixed cu...... hiện toàn bộ
Nutrition and bioprocess development for efficient biosynthesis of an antitumor compound from marine-derived fungus
Oxford University Press (OUP) - Tập 40 - Trang 1131-1142 - 2013
An integrated nutrition and bioprocess strategy was developed for improving the biosynthesis of an antitumor compound, 1403C, by a marine-derived fungus, Halorosellinia sp. (no. 1403). First, statistical design strategies were synthetically applied to optimize the nutritional composition. The resulting 1403C production reached 2.07 g/l, which was 143.5 % higher than the original production. Howeve...... hiện toàn bộ
Lactic acid production from enzyme-thinned corn starch usingLactobacillus amylovorus
Oxford University Press (OUP) - Tập 7 - Trang 27-34 - 1991
An alternative process for industrial lactic acid production was deveooped using a starch degrading lactic acid producing organism,Lactobacillus amylovorus B-4542. In this process, saccharification takes place during the fermentation, eliminating the need for complete hydrolysis of the starch to glucose prior to fermentation. The cost savings of this alternative are substantial since it eliminates...... hiện toàn bộ
Diversity among bacteria isolated from the deep subsurface
Oxford University Press (OUP) - Tập 17 - Trang 219-227 - 1996
Culturable bacteria from the deep subsurface (179 m) at Cerro Negro, New Mexico were isolated and characterized. The average number of viable aerobic bacteria was estimated to be 5×105g−1 of sediment, but only about 0.1% of these could be recovered on agar medium when incubated under aerobic conditions. Of 158 strains isolated from this depth, 92 were characterized by cellular fatty acid profiles ...... hiện toàn bộ
Gene expression profiling of a nisin-sensitive Listeria monocytogenes Scott A ctsR deletion mutant
Oxford University Press (OUP) - Tập 40 - Trang 495-505 - 2013
Listeria monocytogenes is a food-borne pathogen of significant threat to public health. Nisin is the only bacteriocin that can be used as a food preservative. Due to its antimicrobial activity, it can be used to control L. monocytogenes in food; however, the antimicrobial mechanism of nisin activity against L. monocytogenes is not fully understood. The CtsR (class III stress gene ...... hiện toàn bộ
Cellulase production by six Trichoderma spp. fermented on medicinal plant processings
Oxford University Press (OUP) - Tập 36 - Trang 605-609 - 2009
Capabilities of cellulase production, using delignified bioprocessings of medicinal and aromatic plants, viz. citronella (Cymbopogon winterianus) and Artemisia annua (known as marc of Artemisia) and garden waste (chiefly containing Cynodon dactylon), by the six species of Trichoderma were comparatively evaluated. Among the members of Trichoderma studied, T. citrinoviride was found to be the most e...... hiện toàn bộ
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