It is rich in vitamins especially those belonging to B complex and is often used to supply these factors in culture media at a concentration of 0.3% to 0.5%. It is particularly used in media for cultivation of microorganisms encountered in milk or other dairy products.
Yeast Extract Powder is prepared by drying the extract from autolysing yeast cells (Saccharomyces) specially cultivated for this purpose.It is rich in vitamins and other nutritive substances such as free amino acids.It is a low salt extract refined for use in microbial culture media, fermentation and other biological products. Also used with beef extract or in place of beef extract.
Appearance
Light yellow to brownish yellow Homogenous Free flowing powder,having Characteristic odor but not putrescent.
Solubility
Freely soluble in distilled/ purified water, insoluble in alcohol.
Clarity
2% w/v aqueous solution remains clear and neutral without any haziness after autoclaving at 15 lbs pressure (121ºC) for 15 minutes.
Reaction
Reaction of 2% w/v aqueous solution at 25ºC.
Storage and Shelf Life
Store below 30°C. Use before expiry date on the label.