The main strain in koji is yeast. According to the raw materials of koji making, the main raw materials of koji making are rice and wheat, so it can also be called rice koji and wheat koji. There are many varieties of rice koji, among which Xiaoqu is made of rice flour, and red koji, rice koji (Aspergillus oryzae) and Wuyi red koji are made of steamed rice. Modern koji can be divided into Xiaoqu, Daqu, Maiqu, Monascus and bran koji, among which Xiaoqu can brew Xiaoqu liquor, Daqu can brew distilled liquor, Maiqu can brew yellow wine, Monascus can brew Monascus liquor, and bran koji can replace some Xiaoqu or Daqu.

First, what strain is sake koji?

1. Yeast is the main strain in distiller's yeast, which is used for brewing wine and making soybean paste.

2. According to the raw materials of koji making, rice and wheat are the main raw materials, also known as rice koji and wheat koji. There are many kinds of rice koji, such as Xiaoqu made from rice flour, red koji for steamed rice, rice koji (Aspergillus oryzae) and Wuyi red koji.

3. In modern times, koji can be roughly divided into five categories, namely Xiaoqu, Daqu, Maiqu, Hongqu and bran koji. Xiaoqu is mainly used to brew yellow rice wine and Xiaoqu wine. Daqu can be used to brew distilled liquor; Wheat starter is mainly used for brewing yellow rice wine; Monascus is mainly used for brewing monascus; Bran koji is a culture inoculated with pure mold from bran, which can replace some Xiaoqu and Daqu.

Second, the difference between koji and yeast

1, with different properties.

(1) distiller's yeast: The conidia of Aspergillus are transferred into the boiled white rice, and then the temperature is kept, so that hyphae will flourish on the rice.

(2) Yeast: Fermented organic matter is decomposed by some bacteria or enzymes. Fermentation? Fungi that can ferment organic matter are called. Yeast? .

2. Different origins

(1) Jiuqu: The source has not been verified, and the earliest written record may be Zhou Dynasty works & gt in? If you are a wine cellar, you are just a tiller? .

(2) Yeast: Originated in 3000 BC, the earliest product sold in the market is yeast mud. The product has the characteristics of fast fermentation speed, but it is inconvenient to use and transport, and it is difficult to commercialize.

3. Different uses

(1) Daqu: It is rich in microorganisms and enzymes, and sugar will be decomposed into ethanol under the catalysis of enzymes, so it is often used to make wine.

(2) Yeast: generally used for fermenting food, such as bread, cakes and biscuits. Adding edible yeast powder (about 5%) can improve its nutritional value.