Brewer's grains, a major byproduct of the brewing process, are rich in protein, fiber, vitamins, and minerals, yet they have traditionally been considered waste. Traditionally, these grains have been composted, stored in piles, or simply discarded, but this has led to pollution and resource waste. Rich in protein, fiber, vitamins, and minerals, these grains possess high nutritional value and can be further processed to increase their added value.

  Dried grains have a high moisture content and require drying to reduce moisture content for easier transportation and storage. A brewer's grain dryer uses heat exchange between hot air and the material to rapidly dehydrate the grains, reducing moisture to below 10%. This improves drying efficiency while preserving nutrients for easier processing and reuse.

  Applications of Brewer's Grains

  1. Feed:

  Brewers' grains are rich in protein and fiber and are a good feed source for animals, especially ruminants (such as cattle and sheep) and poultry.

  Fermenting brewers' grains improves the digestibility and utilization of nutrients and degrades some anti-nutritional factors, further enhancing feed value.

  Brewers' grains can be fed directly as a single feed or mixed with other feed ingredients to make pelleted feed.

  2. Biogas Production:

  Brewers' grains can be used as a feedstock in anaerobic digestion systems, where microbial fermentation produces biogas for power generation or heating.

  The biogas fermentation process effectively utilizes the organic matter in brewers' grains, reducing environmental pollution while generating renewable energy.

  3. Food and Food Additives:

  The protein and fiber in brewers' grains can be extracted and used in the production of plant-based beverages, snack bars, baked goods, and more.

  Brewers' grains can also be used as food additives to improve the nutritional value and taste of foods.

  4. Other Applications:

  Brewers' grains can be used to extract bioactive substances such as polyphenols and polysaccharides, which have antioxidant and anti-inflammatory properties. Brewer's spent grains can also be used to produce environmentally friendly leather and bioplastics, effectively reusing waste as a resource.

  Brewery spent grains can also be used as a soil conditioner, improving soil structure and fertility.

  In short, brewer's grains are a multi-purpose by-product. After being processed by a spent grain dryer, they can be widely used in feed, energy, food, chemical industry and other fields to achieve resource recycling and value maximization.