... produced simultaneously with hydrogen production. Simultaneous n- butyrate production with hydrogen was also reported in anaerobic hydrogen fermentation (Lay et al., 1999; Noike et al., 2000), meaning ... and Benemann, J. R., 2002. Biological hydrogen production; fundamentals and limiting processes, Int. J. Hydrogen Energy, 27, 1185-1193. Han, S.-K. and Shin, H.-S., 2002. Enhanced acidogenic fermentation ... B. J. and Klenk D. C., 1985. Measurement of protein using bicinchoninic acid, Anal. Biochem., 150, 76-85. Sparling, R., Risbey, D. and Poggi-Varaldo, H. M., 1997. Hydrogen production from inhibited...