New Alliance Dye Chem Pvt. Ltd.
Yeast Extract

Yeast Extract

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Information of Yeast Extract

Yeast Extract Powder is a natural biological preparation manufactured by spray drying of autolyzed Brewer Yeast

manufactured by complete autolysis i.e a transformation of proteins into peptides and amino acids, implemented

through the enzymes present in the yeast. Beside peptides and amino acids, Yeast Extract also contains water-soluble

vitamins i.e., B1-B2-B6, carbohydrates, purine and pyrimidine bases.

Specification:-

Physical and Chemical parameter-

S.No.

Parameters

Specifications

1.

Appearance

Yellow to light brownish free flowing powder

having characteristic yeast odour but not pungent

smell.

2.

Solubility (2% soln. at 25oC)

Soluble in distilled water, clear.

Insoluble in alcohol

3.

Clarity (2% Soln. at 121ºC.)

Clear solution. No ppt.

4.

pH (2% Soln. at 25ºC)

5.5 6.5

5.

Loss on drying (at 105ºC)

NMT - 6.0%

6.

Total Nitrogen (DWB)

NLT - 10.0%

7.

Amino Nitrogen

NLT - 3.0%

8.

Total Ash

NMT - 15.0%

9.

Chloride (as NaCl)

NMT - 5.0%

10.

Indole Test

Positive

Microbiological parameter-

S.No.

Parameters

Specifications

1-

Total viable count

NMT- 10,000cfu/gm

2-

Escherichia coli

Negative

3-

Salmonella spp.

Negative

4-

Staphylococcus aureus

Negative

5-

Yeast & molds

100/gm

YEAST EXTRACT POWDERGROWTH PROMOTION TESTCultural Characteristic observed in 2%

Yeast Extract and 1.5% agar after incubation at 35-37°C for 18-24 hours.

S.No.

Microorganism

ATCC

GROWTH

1.

Staphylococcus aureus

25923

Good - Luxuriant

2.

Escherichia coli

25922

Good - Luxuriant

3.

Pseudomonas aeruginosa

27853

Good -Luxuriant

4.

Bacillus subtilis

6633

Good - Luxuriant

5.

Enterococcus faecalis

29212

Good - Luxuriant

6.

Streptococcus pyogenes

19615

Good - Luxuriant

Packing: 25kg HDPE bag/HDPE drum
STORAGE:Hygroscopic by nature, store the material below 25ºC, protect from direct sunlight.