Xylanase

1. Introduction

Xylanase is a group of hemicellulase enzymes that catalyze the hydrolysis of β-1,4-xylosidic bonds in xylan, a major component of plant cell walls. By breaking down xylan and related arabinoxylans, xylanase helps reduce the anti-nutritional effects of non-starch polysaccharides (NSPs) in plant-based feed ingredients.

Xylanase is widely used as a feed enzyme additive in poultry, swine, livestock, and other animal nutrition applications, particularly in diets containing wheat, barley, rye, and other cereal grains rich in arabinoxylans.

2. CAS No.

9025-57-4

3. Structural Formula

Complex protein / enzyme

Xylanase is a protein enzyme and therefore does not have a single simple molecular structural formula. Its molecular structure varies according to the enzyme source and production process.

4. Physicochemical Properties

• Appearance: White to light-yellow powder, depending on the formulation
• Solubility: Generally soluble or dispersible in water or suitable buffer solutions
• Enzyme nature: Protein-based biological catalyst
• pH stability: Varies according to the xylanase source and formulation
• Temperature stability: Sensitive to excessive heat; enzyme activity may decrease during high-temperature processing
• Storage: Store in a cool, dry environment and protect from moisture and excessive heat

5. Application and Benefits

Xylanase is primarily used as a feed enzyme additive to improve the nutritional value and utilization of plant-based feed ingredients.

Its major functions include:

• Xylan degradation: Breaks down xylan and arabinoxylans in cereal-based feed ingredients.
• Reduced intestinal viscosity: Helps reduce the viscosity associated with soluble NSPs, particularly in wheat- and barley-based diets.
• Improved nutrient utilization: By degrading cell-wall components, xylanase can improve access to nutrients and support more efficient digestion.
• Better feed efficiency: Improved nutrient utilization may contribute to more efficient feed conversion when the enzyme is appropriately formulated and dosed.
• Improved intestinal environment: Reduction of undigested NSP substrates may help support a more favorable intestinal environment.
• Broad feed applications: Particularly suitable for poultry and swine diets containing wheat, barley, rye, and other cereal grains.

The effectiveness of xylanase depends on enzyme activity, dosage, feed ingredients, NSP content, processing conditions, animal species, and gastrointestinal conditions. Product activity should be specified according to the manufacturer’s declared enzyme activity unit.