Product Name : Lactase

System Name: β-D-galactoside galactohydrolase

It is a lactase preparation made with fine processes through biological fermentation.

Appearance: Yellow to light brown powder.

Principles of function: The : β-D-galactoside bond in hydrolytic lactose  molecules can  hydrolyze lactose to generate glucose, galactose and small quantity of galacto-oligosaccharides.

Stable performances:

 ① thermal stability: It is stable under PH ＆#118alue of 6.6-7.0

Below 40°C. the survival rate of enzyme is 90% in 2 hours. The activity of enzyme

Becomes unstable above 45°C. It will lose activity completely very fast above

50°C

.②PH stability : It si stable with PH ＆#118alue at 6.2-8.6. It will lose activity very

fast below or such range.

Most suitable temperature:39°C.

Most suitable PH ＆#118alue : PH 6.8

Influence to activity of enzyme by metal ions : it can be activated by Mn2+ or

Mg2+ and inhibited by Ca2+, Zn2+, cu2+ or Fe2+.

Specifications:

Enzymatic activity:                                           3000 U/g Min.

Moisture:                                                          8% max

Rate  of preservation of enzymatic activity

(for half a year at low temperature) :            85% min.

Pb:                                                                     1.0mg/kg max

As:                                                                      0.5mg/kg max

Coli group (MPN/100g)                                 40 max

Pathogen (intestinal pathogen and pathogenic cocci): Negative

Use: It can be used for hydrolysis of lactose in food industry, health-care products

And pharmaceutical industry .

Packing : 1kg plastic bag./25kg drum.