Abstract: A high-yield bacterial strain for producing acetoin named Bacillus pumilus XH195 has been deposited in a microorganism deposit center in Germany. The deposit number is DSM 16187. The bacteria of the strain are rod-shaped, 1.5 ?m to 3.0 ?m in length, and 0.6 ?m to 0.7 ?m in diameter. The colony color of the bacterial strain is yellow or white. The strain has the typical fatty acid profile of Bacillus and its physiological and biochemical characteristics align with those of Bacillus pumilus. When the bacteria of strain were cultured at 37° C. for 60 hours with shaking, the yield of acetoin could reach 63.0 g/L or 58.1 g/L, when glucose or sucrose was used as the substrate, respectively.

Abstract: This invention provides a high-yield bacterial strain for producing tetramethylpyrazine named Bacillus pumilus RX3-17. The strain has been deposited in China Center for Type Culture Collection on Apr. 19, 2006. The deposit number is CCTCC M 206043. The bacterial strain, isolated from soil, is rod-shaped, 1.5 ?m to 3.0 ?m in length and 0.6 ?m to 0.7 ?m in diameter. The colony color of the strain is milky-white. The strain has typical physiological and biochemical characteristics of Bacillus pumilus. The 16s rDNA sequence of this strain shares a similarity of 99% with other Bacillus pumilus strains. This invention belongs to the domain of biotechnology. The strain can be applied to the production of tetramethylpyrazine with glucose as the substrate, solving the bottleneck of low yield in bacterial tetramethylpyrazine fermentation.

Abstract: This invention provides a high-yield bacterial strain for producing tetramethylpyrazine named Bacillus pumilus RX3-17. The strain has been deposited in China Center for Type Culture Collection on Apr. 19, 2006. The deposit number is CCTCC M 206043. The bacterial strain, isolated from soil, is rod-shaped, 1.5 ?m to 3.0 ?m in length and 0.6 ?m to 0.7 ?m in diameter. The colony color of the strain is milky-white. The strain has typical physiological and biochemical characteristics of Bacillus pumilus. The 16s rDNA sequence of this strain shares a similarity of 99% with other Bacillus pumilus strains. This invention belongs to the domain of biotechnology. The strain can be applied to the production of tetramethylpyrazine with glucose as the substrate, solving the bottleneck of low yield in bacterial tetramethylpyrazine fermentation.

Abstract: A high-yield bacterial strain for producing acetoin named Bacillus pumilus XH195 has been deposited in a microorganism deposit center in Germany. The deposit number is DSM 16187. The bacteria of the strain are rod-shaped, 1.5 ?m to 3.0 ?m in length, and 0.6 ?m to 0.7 ?m in diameter. The colony color of the bacterial strain is yellow or white. The strain has the typical fatty acid profile of Bacillus and its physiological and biochemical characteristics align with those of Bacillus pumilus. When the bacteria of strain were cultured at 37° C. for 60 hours with shaking, the yield of acetoin could reach 63.0 g/L or 58.1 g/L, when glucose or sucrose was used as the substrate, respectively.

Abstract: A method of vanillin production from ferulic acid with a high concentration by biotransformation using a Streptomyces sp. strain is claimed in this invention. This strain is named as Streptomyces sp. V-1, which has been deposited in China Center for Type Culture Collection on Jul. 12, 2006 with the number of CCTCC M 206065. Using this strain, high concentration of vanillin fermentation broth is obtained from ferulic acid by biotransformation in GY biotransformation medium. With the addition of macroporous adsorbent resin DM11, the concentration of vanillin can be greatly improved. The advantage of this invention is less environmental pollution, high product concentration, less by-product, short processing cycle, low production cost, simple product extraction, clean production process, product environmental friendly, safe and reliable, which solves many difficulties in the vanillin production from botanical raw material extraction or chemical synthesis, and therefore it has good application prospect.