TABLE 2.
Basic characteristics of each jiuqu.
| Jiuqu | Types | Baijiu | Raw material | Microorganism species | References |
| High-temperature Daqu | Maotai-flavored baijiu | Moutai, Langjiu | Mostly made from wheat, barley, and/or peas; Maotai-flavored Daqu is only made from wheat | Some fungi, lactic acid bacteria; Bacillus are the main flora in Daqu production. Ascomycota and Basidiomycota were the dominant phyla | Jin et al., 2017; Song et al., 2017; Guan et al., 2020; Wang et al., 2020b; Cai et al., 2021 |
| Te-flavored baijiu | Si’te-jiu | ||||
| Medium/high-temperature Daqu | Strong-flavored baijiu | Luzhou laojiao, Wuliangye | |||
| Feng-flavored baijiu | Xifengjiu | ||||
| Medium-temperature Daqu | Laobaigan-flavored baijiu | Laobaigan | |||
| Xiaoqu | Rice-flavored baijiu | Sanhua jiu | Rice, sorghum, and barley are used as main raw materials, and several traditional Chinese medicines are added. | Rhizopus, Mucor, Lactobacillus, and some Yeast, e.g., Saccharomyces cerevisiae, and Saccharomycopsis fibuligera | Zhou, 2011; Xiong et al., 2014; Jin et al., 2017 |
| Chi-flavored baijiu | Yubingshao jiu | ||||
| Daqu Xiaoqu mixture | Medicine-flavored baijiu | Dong jiu | |||
| Fuyu-flavored baijiu | Jiugui jiu | ||||
| Daqu and Fuqu mixture | Sesame-flavored baijiu | Jingzhijiu | Fuqu: bran as raw material | Aspergillus flavus, Aspergillus niger, some thermotolerant yeast, and lipogenic yeast | Jin et al., 2017; Wang et al., 2017a; Dai et al., 2020 |
| Daqu (high-temperature Daqu/medium-temperature Daqu) | Miscellaneous-flavored baijiu | Baiyunbian | − | Salmonella, Penicillium, Aspergillus, Streptococcus, Saccharomyces cerevisiae, Ssaccharomycopsisibuligera, Pichia pastoris and Debaryomycesansenii | Xiong et al., 2014; Dong et al., 2022; Shi et al., 2022 |
| Daqu, Xiaoqu, and Fuqu mixture | Light-flavored baijiu | Fenjiu | Bacillus, Lactobacillius, Acetobacter and Lactococcus | Dong et al., 2020; Su et al., 2020; Hu Y.A. et al., 2021; Tang et al., 2022 |