What is yeast and what is koji? What is the difference?

Jiumu: It originally refers to the artificial yeast culture solution which contains a lot of sugar and can be fermented into alcohol. Later, people used to call solid artificial yeast culture solid yeast.

Jiuzuo: generally write wine songs. After intense cooking, the conidia of Aspergillus are transplanted into white rice, and then kept warm, hyphae will grow on the rice grains, which is called koji.

Difference:

1, with different properties.

Yeast: artificial yeast culture solution

Distiller's yeast: hyphae on rice grains

2. Different roles

Yeast: Sugar is fermented into yeast.

Daqu: Moldy grain is made into Daqu, and the grain raw materials are saccharified and fermented into wine by enzyme preparation contained in Daqu.

Extended data:

Classification of sake koji:

According to koji-making raw materials, there are mainly wheat and rice. Therefore, they are called wheat koji and rice koji respectively. There are many kinds of rice-based koji, such as rice-based Xiaoqu, steamed rice-based red koji or black-coated red koji, and rice koji (Aspergillus oryzae).

According to whether the raw materials are ripe or not, they can be divided into raw wheat koji and cooked wheat koji.

According to the additives in koji, there are many kinds, including Chinese herbal medicine koji and bean koji with bean raw materials (peas, mung beans, etc.). ).

According to the shape of qu, it can be divided into Daqu (straw bag qu, brick qu, hanging qu), Xiaoqu (cake qu) and Sanqu.

According to the source of microorganisms in koji, it can be divided into traditional koji (naturally inoculated by microorganisms) and pure koji (such as koji inoculated by Aspergillus oryzae, koji inoculated by Rhizopus, koji inoculated by Aspergillus Niger).

Baidu Encyclopedia _ Nine Songs

Baidu Encyclopedia _ Jiumu