Dry yeast is a common biological fermenter. Without yeast, we can't make fermented noodles. Yeast is a kind of single-cell fungus. Yeast is added to flour. Yeast uses the sugar and other substances in dough to reproduce rapidly under certain conditions, and decomposes the sugar with the enzymes secreted by yeast to produce a large amount of carbon dioxide and other products.

The yeast used to ferment and make pasta has common active dry yeast, which is a common starter in the market and commonly used in home-made pasta, as well as the self-cultivation of old noodles, seed koji and starter containing yeast.

In our life, sometimes we don't remember to use all the yeast powder in the bag, and we can't determine whether yeast still has activity. So we can activate yeast first according to the method mentioned above when making pasta. When yeast is activated, a small amount of sugar can be added to the water. If the yeast solution bubbles, it indicates that yeast is still active.

Guangxi lejiao Biotechnology Co., Ltd. is a high-tech enterprise of biological products. At present, the company's three major products: lejiao α - amylase (special for sugar production), lejiao yeast promoter and acid free fermentation complex enzyme have been put on the market. Due to the independent R & D products, the company has independent intellectual property rights, coupled with the particularity and high cost performance of biological enzyme products, since it was put on the market, it has been praised by the majority of users. Guided by the application technology of enzyme engineering, the company has adhered to the road of independent research and development for many years. The three kinds of products are applied in the fields of sugarcane sugar manufacturing process, yeast culture and fermentation of starch alcohol production and sugar alcohol production. With unique technical experience and process route, the company has developed niche, high-tech and unique biological enzymes to fill the market gap and meet the needs of users New products of preparations have come out a new path for the development of small and micro technology enterprises.

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