bv伟德源自英国始于1946(中国)有限公司

Yeast Extract
Code: LP0021
A water soluble autolysate in powder form, for use in culture medium as a source of nitrogen and water soluble B vitamins.

Physical Characteristics:
Straw, free flowing powder
Formal Nitrogen 4.5 – 5.8%
Total Nitrogen 10.0 – 12.5%

Typical analysis                  (% w/w)

Total Nitrogen                      10.9

Amino Nitrogen                     5.3

Sodium chloride                    0.3

pH (2% solution)             7.0 ± 0.2

Storage instructions
Store the powder at 10–30°C and use before the expiry date

Quality control
Test                                 Expected results from a 2% solution
Fermentable Carbohydrate                        Positive
Growth recovery of ; 
Escherichia coli ATCC© 25922,             Turbid Growth
Staphylococcus aureus ATCC© 9144,     Turbid Growth
Enterococcus faecalis ATCC© 29212,      Turbid Growth