With grains (also Träber ) is known in the food technology that in the production of beer resulting residues of Braumalzes . The spent grains are a by-product that can be used as animal feed , in human nutrition or in industry. The residues from the mashing process during whiskey production are also referred to as spent grains.
Brewer's grains contain the husks , the undissolved parts of the barley or wheat malt and the coagulated , insoluble protein . The high protein content makes spent grains an important substitute forage in the rearing and fattening of cattle in the dairy industry . Brewed grains are delivered freshly fed or stored in feed silos. The addition of spent grains has a positive effect on the milk yield of cows.
In the kitchen, spent grains can be used to make breadcrumbs (“Treberschnitzel”) or vegetarian fillings (“Trebermaultaschen”). Bakeries make bread and gingerbread that contain brewer's grains. The mash residues from beer production are added to a grain bread made from wheat dough or sourdough . This hearty bread is used in southern Germany as breading for meat dishes ("brewer's schnitzel").
Treber can also be fermented in biogas plants. One ton of fresh material can generate around 230 kWh of electrical energy.
- Brewer's spent grain ( en ) onthe United Nations Food and Agriculture Organization website. Retrieved November 11, 2009.
- Wolfgang Preißinger et al .: spent grains: feed value, conservation and successful use in ruminants. Bayerische Landesanstalt für Landwirtschaft (LfL), 1st edition March 2008. At LfL.Bayern.de ( PDF ; 760 KB), accessed on January 11, 2019.
- Christian Märtel: grains, pulp & Co: Biogas from waste products. In: Agro-Industry. On Heizungsfinder.de, accessed on January 11, 2019.