82303

Peptone from casein, enzymatic digest

Enzymatic digest of casein, for biotechnological purposes

• Synonym(s): Peptone from casein
• CAS Number: 91079-40-2
• EC Number: 293-428-4
• eCl@ss: 42040102
• NACRES: NA.85

Properties

• biological source: bovine milk
• Quality Level: 200
• grade: for biotechnological purposes
• form: powder
• composition: total nitrogen (N), ~13%
• nitrogen analysis: , ~0.3 AN:TN ratio
• ign. residue: <17%
• loss: <6% loss on drying
• pH: 7.0±0.5 (2% in H₂O)
• solubility: H₂O: 2%, clear, yellow to tan; water: soluble 2%, clear, faintly brown-yellow
• application(s): food and beverages; microbiology

Description

General description

Peptone from an enzymatic digest of casein is used as a nitrogen source in culture media formulated for isolating and cultivating fastidious and non-fastidious bacteria and fungi. It is a refined hydrolysate with high solubility and is used as a microbiological nutrient. It is a rich source of amino acids and peptides recommended for culture media in analytical microbiology and industrial fermentation.

Application

Peptone from casein may be used as medium supplement in the following:

• Bacterial cultures for short term storage of bacteria.
• The basal Glucose Yeast Peptone (GYP) medium.
• As nitrogen supplement in the culture medium of Ceriporiopsis subvermispora.
• Culture medium of Methylobacterium rhodesianum and Ralstonia eutropha.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves