Xylanase is an enzyme that breaks down the cell wall of certain plant materials, such as xylans. This enzyme can be found in a variety of organisms, including bacteria and fungi. Xylanase is also used to process plant material for biofuel production or for biodegradation.

There are a few different types of best xylanase enzymes, each with its own specific function. The most common type is amylolytic xylanase, which breaks down fragments of xylan into smaller pieces that can be absorbed by plants. This type of enzyme is mainly found in bacteria, but some plant strains also contain amylolytic xylanases.

The second type of enzyme is the polysaccharide lytic xylanase. This type of enzyme hydrolyzes long chains of polysaccharides, which plants can't use directly, into glucose and other simple molecules. Polysaccharide lytic enzymes are mostly found in fungi and some bacteria.

The third type of enzyme is beta-xylosidase. This type of enzyme breaks down beta-xylans, a type of complex sugar molecule found in certain plant cell walls. Beta-xylosidases are mainly found in fungi and some bacteria.

When you buy enzymes, it's important to make sure you're getting the right kind – there are many different types of enzymes available on the market, and each one is designed to do a specific job.