DESCRIPTION
The
β-glucanase preparation is produced by submerged fermentation of a finely
selectedTrichoderma reesei strain followed by purification, drying and
formulation. The preparation contains mainly β-glucanase but also other beneficial side activities
like cellulase, xylanase and pentosan degrading enzymes.
MECHANISM
β-glucan is a
long chain of β-1,3- and β-1,4- linked glucoses. 90% of β-glucans in
barley have this configuration. During malting abundant native β-glucanases
developed but lost most of their activities during kilning due to heat
instability. External enzymes will make up for the gap with the aboriginal
counterparts, resulting in satisfactory brewing.
REACTION PARAMETERS
PARAMETERS |
RANGE |
Activity
Temperature |
45℃-75℃ |
Activity pH |
4.5-6.0 |
PRODUCT
SPECIFICATION
Items |
Description |
Physical Form |
Powder |
Color** |
Light yellow |
Odour |
Normal microbial
fermentation odour. |
** Color: Color can
vary from batch to batch. Color intensity is not an indication of enzyme
activity.
PRODUCT STANDARD
The product
complies with GB1886.174.
No. |
ITEMS |
INDEX |
|
1 |
Particle size (%<40 mesh) |
≥80 |
|
2 |
≤8.0 |
||
3 |
Lead/(mg/kg) |
≤5.0 |
|
4 |
Arsenic/(mg/kg) |
≤3.0 |
|
5 |
Total viable count/(CFU/g) |
≤50000 |
|
6 |
Coliform Bacteria/(CFU/g) |
≤30 |
|
7 |
Escherichia coli |
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