NEW XYLANASE WITH IMPROVED THERMOSTABILITY AND INCREASED ENZYME ACTIVITY ON ARABINOXYLAN

The present invention relates to novel polypeptides with xylanase activity， especially xylanase variants， such as genetically engineered xylanase variants， which show improved thermostability， improved resistance against acid treatment and increased enzyme activity on arabinoxylan. The invention includes the use of said polypeptides in applications， such as for food or feed， for brewing or malting， for the treatment of xylan containing raw materials like grain-based materials， e.g. for the production of biofuels or other fermentation products， including biochemicals， and/or for the wheat gluten-starch separation industry， and methods using these polypeptides， as well as compositions (such as feed additive compositions) comprising said polypeptides. The present invention relates to novel polypeptides with xylanase activity， especially xylanase variants， such as genetically engineered xylanase variants， which show improved thermostability， improved resistance against acid treatment and increased enzyme activity on arabinoxylan. The invention includes the use of said polypeptides in applications， such as for food or feed， for brewing or malting， for the treatment of xylan containing raw materials like grain-based materials， e.g. for the production of biofuels or other fermentation products， including biochemicals， and/or for the wheat gluten-starch separation industry， and methods using these polypeptides， as well as compositions (such as feed additive compositions) comprising said polypeptides.

本发明涉及具有木聚糖酶（xylanase）活性的新型多肽，尤其是木聚糖酶（xylanase）变体，例如经基因工程改造的木聚糖酶（xylanase）变体，这类变体展现出更优的热稳定性（thermostability）、更强的抗酸处理性能，以及对阿拉伯木聚糖（arabinoxylan）更高的酶催化活性。本发明涵盖了所述多肽在多种场景中的应用，例如用于食品或饲料、酿酒或制麦芽、处理含木聚糖的原料（如谷物基原料）——例如用于生产生物燃料或其他发酵产物（包括生物化学品），以及/或用于小麦谷蛋白-淀粉分离工业；同时涵盖了使用这些多肽的方法，以及包含所述多肽的组合物（例如饲料添加剂组合物）。
本发明涉及具有木聚糖酶（xylanase）活性的新型多肽，尤其是木聚糖酶（xylanase）变体，例如经基因工程改造的木聚糖酶（xylanase）变体，这类变体展现出更优的热稳定性（thermostability）、更强的抗酸处理性能，以及对阿拉伯木聚糖（arabinoxylan）更高的酶催化活性。本发明涵盖了所述多肽在多种场景中的应用，例如用于食品或饲料、酿酒或制麦芽、处理含木聚糖的原料（如谷物基原料）——例如用于生产生物燃料或其他发酵产物（包括生物化学品），以及/或用于小麦谷蛋白-淀粉分离工业；同时涵盖了使用这些多肽的方法，以及包含所述多肽的组合物（例如饲料添加剂组合物）。