1.05391

Malt extract

suitable for microbiology

• Synonym(s): Malt extract, Malt extract powder
• CAS Number: 8002-48-0
• MDL number: MFCD00131570
• UNSPSC Code: 41106212
• EC Index Number: 232-310-9
• NACRES: NA.74

Properties

• biological source: plant
• Quality Level: 200
• form: powder
• packaging: pkg of 500 g
• storage condition: protect from light (Store dry and tightly closed)
• color: brownish-yellow Powder
• pH: 4.8 (25 °C, 17 g/L in H₂O, after autoclaving)
• solubility: 17 g/L
• bulk density: 590 kg/m³
• application(s): microbiology
• storage temp.: 15-25°C

Description

General description

Malt extract is the water-soluble portion of malted barley. It contains a high content of reduced sugars and lesser nitrogenous constituents. The carbohydrates mainly comprise the disaccharide maltose and fractions of hexoses such as glucose and fructose, the disaccharide sucrose, and other carbohydrates. The nitrogenous components include peptides, amino acids, purines, and vitamins. Malt extract favors the sporulation of molds such as Aspergillus and Penicillium.

Application

Malt Extract is used as a nutritive substrate in mycological media for the propagation of yeasts and molds and test strains in vitamin assays.

Analysis Note

Appearance (color): brownish-yellow
Appearance (description): fine powder
Identity: passes test
pH-value (2 %; water): 4.5 - 6.0
Sulfated ash (800 °C): ≤ 3.0 %
Loss on Drying (105 °C): ≤ 6.0 %
Suitability for microbiology: passes test

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable