TABLE 3.

Predominant amylolytic bacteria in RS chemostat enrichments^a

D (h−1)	Predominant bacteria
0.03	Bacteroides ovatus, Bacteroides uniformis, Bacteroides thetaiotaomicron, Bacteroides caccae, Bifidobacterium angulatum, Bifidobacterium adolescentis, Bifidobacterium sp. strain 1, Bifidobacterium sp. strain 2, Clostridium sporogenesb, Clostridium sordellii
0.30	Bacteroides uniformis, Bacteroides thetaiotaomicron, Bifidobacterium angulatum, Clostridium sporogenes, Clostridium sordellii, novel Clostridium sp.c, Clostridium perfringens, Clostridium butyricum, Eubacterium limosum, Peptostreptococcus micros, Lactobacillus acidophilus

^aIdentification based on automated cellular fatty acid analysis (32) and fermentation product formation (18). 

^bBacteria in boldface are species that produced a minimum of 5 mM butyrate during growth in PYG broth. 

^cMicroscopic identification and RNA abundance measurements.