Spent grains brewers

DisK Presses Figure 18-157 shows a disk press. The two disks, or press wheels, converge to a veiy narrow space at the bottom. This is the point of maximum compression, which can be more than 14 times the feed pressure. The press wheels have channels to cany the hquid from the dewatered product, and they are covered with a screen plate. Wheels 1.5 m (5 ft) in diameter are used on a large press that requires about 80 connected horsepower and produces just under 1 tonne/h (0.9 ton/h) of sohds (diy basis). Typical apphcations are fibrous materials such as coffee grounds, pineapple and citrus peels and wastes, alfalfa, and brewers spent grain. 

D. hansenii at concentrations above 0.5 g/1, and the inhibitory effects on fermentation increased with vanillin concentration up to 3 g/1. Furfural was less inhibitory to batch fermentations, with concentrations between 1 and 5 g/1 exhibiting similar effects [23], From experiments with brewers spent grain hydrolysate (85 g/1 xylose) pretreated in various manners (raw, treated with activated carhon, concentrated, or amended with xylose), it appears that total phenolics (3.93 g/1), including vanillin and syringaldebyde, are the most inhibitory compounds to C guilliermondii fermentations. The presence of furfural (0.61 g/1) did not effect the fermentation. Sanchez and Bautista [31] found that 2 g/1 fiirfiiral inhibits oxidative metabolism and fermentation by C. guilliermondii, and it has been previously observed that furfural concentrations below 1 g/1 are not inhibitory [32-33]. Keating et al. 

Kuzmanova, E., Akunna, J.C. (2013). Evaluation of the biochemical methane potential (BMP) from brewers spent grain. Project Report, unpublished. 

Mussatto, S. I., Dragone, G., Roberto, I. C. (2006). Brewers spent grain generation, characteristics and potential applications. Journal of Cereal Science, 43, 1-14. 

Treimo, J., Westereng, B., Horn, S.J. et al. (2009) Enzymatic solubilization of brewers spent grain by combined action of carbohydrases and peptidases. J. Agric. Food Chem., 57, 3316-3324. 

Coelho E, Rocha MA, Saraiva JA, Coimbra MA. Microwave superheated water and dilute alkali extraction of brewers spent grain arabinoxylans and arabinoxylo-oligosaccharides. Carbokydr Polym 2014 99 415-22. 

Brewers spent grains The extracted residue of barley malt, alone or in mixture with other cereal grains or adjuncts, resulting from the manufacture of wort or beer. Brewers spent grains are mainly used to feed ruminants. 

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