Effect of some Materials on Growth of <i>B. longum</i> and <i>B.adolescentis</i>

Abstract

The effect of some materials including sucrose, peptone and yeast extract on growth of B. longum and B.adolescentis in the extract of Fructus tribuli was studied by measuring optical density at 600nm (OD600) and pH. The addition of sucrose, peptone and yeast extract was 0.0%-2.40%, 0-1.4% and 0-1.4%, respectively. Results were as follows: addition of sucrose, peptone and yeast extract could promote the growth of B. longum and B.adolescentis. The optimum concentration of sucrose, peptone and yeast extract in the extract of Fructus tribuli was 2.0%, 1.0% and 1.0% for B. longum and 2.20%, 1.0% and 0.8% for B.adolescentis