Sour dough fermentation inoculant dry powder and preparation method thereof

The invention relates to the technical field of food processing, and particularly provides sour dough fermentation inoculant dry powder and a preparation method thereof. The sour dough fermentation inoculant dry powder is obtained by mixing sour dough and flour paste, then carrying out enlarged fermentation culture, then mixing the mixture with cereal powder, and then carrying out staged low-temperature drying and crushing. The sour dough fermentation inoculant dry powder provided by the invention is convenient to preserve, fully retains the activity of strains, not only retains the advantages of traditional sour dough fermentation, avoids the hidden danger of introducing contaminating florae, but also prolongs the shelf life of food, enables the dough to be quickly formed, slows down the aging rate of flour food, and improves the quality of the flour food. And the product has good flavor and relatively high nutritional quality. 本发明涉及食品加工技术领域，具体提供一种酸面团发酵菌剂干粉及其制备方法。所述酸面团发酵菌剂干粉以酸面团与面浆混合后扩大发酵培养，再与谷物粉混合后分阶段低温干燥、粉