山東拓普生物工程有限公司

Shandong Tuopu Biol-Engineering Co.,Ltd

Eubacterium lentum Medium

培養(yǎng)基配方
Composition per 1205.0mL:
Peptone ..................................................................30.0g
Arginine...................................................................5.0g
K2HPO4 ....................................................................5.0g
Yeast extract..............................................................5.0g
L- Cysteine·HCl·H2O .....................................................0.5g
Chopped meat extract filtrate..............................................1.0L
Chopped meat extract solids.............................................200.0mL
Resazurin (0.025% solution) ..............................................4.0mL
pH 7.0 ± 0.2 at 25°C
Chopped Meat Extract:
Composition per liter:
Beef or horse meat.......................................................500.0g
NaOH (1N solution).......................................................25.0mL
Preparation of Chopped Meat Extract: Use lean beef or horse
meat. Remove fat and connective tissue. Grind. Add meat and NaOH
to distilled/deionized water and bring volume to 1.0L. Gently heat and
bring to boiling while stirring. Cool to 25°C. Remove fat from surface.
Filter. Reserve ground meat particles and filtrate. Add distilled/deion-
ized water to filtrate and bring volume to 1.0L.
Preparation of Medium: To 1.0L of chopped meat extract filtrate,
add the remaining components, except  L -cysteine·HCl·H2O and
chopped meat solids. Mix thoroughly. Gently heat to boiling. Cool to
room temperature. Add the  L -cysteine·HCl·H2O. Adjust pH to 7.0. Dis-
tribute 1 part chopped meat solids (by volume) and 5 parts of liquid (by
volume) into tubes under O2 -free 97% N2 + 3% H2 . Cap with rubber
stoppers and place tubes in a press. Autoclave for 15 min at 15 psi pres-
sure–121°C with fast exhaust.
Use:  For the cultivation and maintenance of Eubacterium lentum.