Taking fresh juiced apple as the testing object,and rhizopus,beer yeast,candicidin and candida as the zymogen,the experiment researches on the protein quantity change in the products of apple dregs fermented by single germs and mixed germs.

A laboratory study of biodegradation and adsorption and desorption of trichloroethylene to mixed bacteria;

The merits and demerits of hydrogen production by immobilized pure bacterium and mixed bacteria were analyzed and the effects of materials and bioreactors on hydrogen production by immobilized microorganisms were presented.

With the mixed bacteria after aerated as the research subject,the effects of the different iron valences and concentration on hydrogen production capacity were discussed.

Batch experiments were conducted to investigate the effect of various concentrations of Fe~(2+),Co~(2+) and Ni~(2+) on microbial growth and hydrogen production using mixed cultures.

Batch tests were conducted to investigate the effect of gas phase on growth and hydrogen production of mixed cultures and pure culture.

Hydrogen production from starch by mixed cultures under light and dark conditions was studied in batch experiments.

A stairway fermentation of sauce with mixed multi-microorganisms was primarily studied.