Sauce-flavor Baijiu distillers’ grains offer nutritional and functional value

Sauce-flavor Baijiu, represented by Moutai, holds a prominent place in China’s liquor market and drinking culture. Produced mainly from Hongyingzi sorghum through repeated fermentation and distillation, it generates solid co-products known as sauce-flavor Baijiu distillers’ grains. Sauce-flavor Baijiu distillers’ grains are already used as a feed resource in livestock production. Their protein, fiber and fermentation-derived compounds provide a basis for both nutritional utilization and functional feed development. Concentrated regional supply also supports collaboration between distilleries and nearby farms, connecting brewing co-product utilization with livestock feeding.

The review examines the nutritional composition, fermentation upgrading and feeding applications of sauce-flavor Baijiu distillers’ grains. It considers microbial structures, organic acids, peptides and polyphenols alongside conventional nutrients. Studies in cattle, poultry and pigs illustrate how processing and diet formulation shape feeding outcomes. This integrated perspective connects resource utilization, functional components and animal nutrition.

The review highlights the nutritional value and functional development opportunities of sauce-flavor Baijiu distillers’ grains. In a cited 42-day broiler study, the tested fermented Moutai product maintained growth at dietary inclusion levels up to 10%. A 60-day finishing-cattle study found no significant impairment of intake, daily gain or feed efficiency at 15% and 30% fermented material on a dietary dry-matter basis. In growing-finishing pigs, the tested fermented product maintained growth at up to 10%, with 5% showing the clearest later-finishing economic and carcass responses. Together, these studies provide species- and product-specific references for feed formulation and fermentation upgrading.

Building on established feed use, the review outlines opportunities to improve the consistency and functional value of Baijiu distillers’ grains. Fermentation and processing can be assessed through nutrient recovery, component profiles and animal responses. Nutritionally matched trials can help clarify the contributions of microbial structures and associated compounds. Combining product characterization with environmental and economic assessment can guide efficient regional brewing-feed-livestock systems.