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The Critical Role of Steam Generators in Douchi Production


Douchi is a traditional Chinese fermented soybean condiment known for its rich umami flavor and well-balanced savory taste. It is primarily made from soybeans or yellow beans through the action of mucor, aspergillus, or bacterial proteases, which break down soybean proteins. When the fermentation reaches a certain level, salt, alcohol, or other ingredients are added, and the mixture is dried to halt enzymatic activity and slow down the fermentation process. Dishes prepared with douchi exhibit a distinctive and delightful flavor.

In the modernization of this series of traditional processes, steam generators have become key equipment for ensuring quality and efficiency.  

 

During the raw material pretreatment stage, the temperature control capability of steam generators lays the foundation for subsequent fermentation. Soybeans require high-temperature steaming to loosen their protein structures, facilitating microbial enzymatic hydrolysis. Steam generators ensure uniform heating for each soybean through stable temperature output. This controllability avoids temperature fluctuations typical of traditional heating methods, preventing overcooking that could lead to overly soft beans while ensuring optimal protein denaturation. This provides an ideal substrate for microorganisms such as *Mucor* and *Aspergillus*, reducing the risk of undercooked raw materials or nutrient loss.During the finished product processing stage, steam generators contribute to quality preservation. In the sterilization step prior to drying, slightly superheated steam rapidly penetrates douchi (fermented soybean) particles, thoroughly eliminating residual bacteria without compromising the umami compounds or distinctive savory aroma. This physical sterilization method aligns better with the preservation of traditional flavors compared to chemical approaches, ensuring the final product is both safely stabilized and retains its authentic savory and palatable taste.Steam generators empower traditional techniques through technology, enabling douchi—this ancient condiment—to retain its authentic characteristics of "delicious flavor and well-balanced salinity" even in industrial production. Meanwhile, standardized control ensures consistent quality, striking a balance between tradition and modernity at every stage of the process, and allowing the rich, savory aroma of douchi to endure.

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The Critical Role of Steam Generators in Douchi Production

Steam generators empower traditional techniques through technology, enabling douchi—this ancient condiment—to retain its authentic characteristics of "delicious flavor and well-balanced salinity" even in industrial production. Meanwhile, standardized control ensures consistent quality, striking a balance between tradition and modernity at every stage of the process, and allowing the rich, savory aroma of douchi to endure.


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