Method for improving erythritol sweetness by co-crystallizing withstevioside

The invention provides a method for improving erythritol sweetness by co-crystallizing with stevioside. The method comprises the following steps: a. preparing an erythritol and stevioside solution; (2) co-crystallizing erythritol and stevioside; (3) post-treating a co-crystallized product. The method provided by the invention is simple to operate, the erythritol sweetness is obviously improved, and finally the co-crystallized product with uniform sweetness and controllable mesh number is obtained. The technology provided by the invention has a great significance on the further development and utilization of erythritol.