Research Process of Anaerobic Fermentative Hydrogen Production and Its Development Future / 中国生物工程杂志

Hydrogen is an ideal energy due to its high conversion efficiency, recyclability and nonpolluting nature. Compared with conventional methods, biological hydrogen production process is found to be less energy intensive and more environmental friendly, and nowadays more and more attentions are being paid on its fermentative way. A survey of fermentative bio-hydrogen production process was provided, followed by its new approaches in the future development.

Screening of High Daptomycin-producing Strain by He-Ne Laser Irradiation and Streptomycin Resistance Screening Method / 微生物学通报

The spores suspension of Streptomyces roseosporus D-38 irritated with 20mW He-Ne laser for 20 min were incubated on G1 medium plates containing 1. 9?g/mL of streptomycin. Ten percent of mutants increased the potency of daptomycin by streptomycin-resistance method, including the mutant LC-54, which could produce daptomycin 81. 2 mg/L, which was 39% higher than that of the beginning strain by flask fermentation.