Description
β-Mannanase plays a role in mannan (Glucomannan,
Galactomannan, etc.) of feed. It can be widely used in a variety of
feed to improve nutrient digestibility and animal production
performance to increase economic efficiency. It is a new type of
enzymes.
Definition of activity
One unit
(U) of mannanase is defined asthe
quantity of enzyme, which
liberates 1μmol reducing sugar per minute from 3mg/mL mannan
solution at *7℃, pH5.5.
Anti-nutrientEffect of Mannan
Mannan,
the most widely distributed hemicellulose in plant feed materials,
is a kind of non-starch polysaccharide (NSP). It can be commonly
found in plant feed, with high level in feed meals, particularly in
soybean meals (Table 1).Even in some non-conventional cake meals,
such as palm meals and coconut meals, higher contents of mannan
have been determined (about *5% ~ *5%).
Table1 Contents of
Mannan in conventional feed stuff
|
Feed
stuff
|
Total
mannan（%）
|
Feed
stuff
|
Total
mannan（%）
|
|
Soybean
meal（*4%）
|
1.5~1.8
|
Dehulled soybean
meal（*4%）
|
1.1~1.3
|
|
Palm
meal
|
2.5~3.0
|
Rapeseed
meal
|
0.*8
|
|
Coconut
meal
|
*5~*5
|
Cottonseed
Meal
|
0.*7
|
|
Sunflower
meal
|
0.*6
|
Peanut
Meal
|
0.*2
|
|
Sorghum
|
0.*0
|
Wheat
|
0.*1
|
|
Rice
bran
|
0.*3
|
Sesame
meal
|
3~4
|
1.
Interacting with intestinal lipid micelles and
polysaccharide-protein complexes, thus reducing the absorption of
nutrients.
2.
Combining with digestive enzymes, bile salts, thus reducing the
activity of digestive enzymes and affecting the digestion and
absorption of fat, which result in the decrease of feed energy
value.
3. Nutrients are enwrapped by mannan and
hard to be digestedï¼›
the chyme viscosity increases, thus
destroying the intestinal micro-ecological balance and affecting
the health of livestock and poultry.
4.
Through interfering the insulin secretion and the generation of
insulin-like growth factors, the absorption rate of dextrose in
intestinal and the process of carbohydrate metabolism are degraded,
thus reducing the energy value of feed.
Product Features
1. High
mannan specificity, especially effective in degrading mannan of
feed meals, such as soybean meal.
2.
leading-edge technology of genetic engineering strain, advanced
submerged fermentation and post-treatment process are used to
enhance the effect.
3.BroadpH range of
activity (**7.5) ensures the
ideal effect of enzyme in animal digestive
tract.
4.
Significant effect. The decrease of feed cost and the increase of
energy utilization have been proved by practices after using
β-mannanase in feed.
Product Functions
β-Mannanase, as a kind of hemicellulose, cleaves
internal β*1, *-glycosidic bonds of mannan. The non-reducing
terminal of degradation products is mannose. The specific roles are
as follows:
1. Reducing the chyme viscosity and
increasing the digestion and absorption of nutrients through
decomposition of mannan. NSP.
2.
Degrading the complex of mannan and lipopolysaccharide and protein
to enhance the absorption of fat and increase the energy value of
feed stuff.
3.
Eliminating the combination of mannan, NSP, digestive enzyme and
bile salt, thus improving the digestion enzyme
activity.
4. Degrading mannan, breaking down cell
wall and releasing enwrapped nutrients to contact with digestive
enzymes, thus enhancing the nutritional value of feed.
5.
Mannose, the degradation product of mannan, can reduce the
colonization of pathogenic bacteria in intestine, protect the
integrity of intestinal mucosa, significantly promote the
proliferation of profitable bacteria represented by bifidobacterium
in animal intestine, lessen the diarrhea, and ultimately improve
the production performance of animal.
