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Brewer's spent grain (BSG) or draff is a food waste that is a byproduct of the brewing industry that makes up 85 percent [1] of brewing waste. BSG is obtained as a mostly solid residue after wort production in the brewing process.
The water is removed from the grain, and becomes wort for brewing. The remaining grain, called "spent grain" for the removal of simple sugars and starch, can then be sold as a by-product. The conversion rate of grains to ethanol and distillers grains varies with the different types of grains and the process used. The details are outlined below:
Spent mash is also known as spent beer, distillers' spent grain, and slop or feed mash because it is also used as animal feed. The acid introduced by the sour mash controls the growth of bacteria that could taint the Bourbon.
Brewer's spent grain (also called spent grain, brewer's grain or draff) is the main by-product of the brewing process; [161] it consists of the residue of malt and grain which remains in the lauter tun after the lautering process. [162] It consists primarily of grain husks, pericarp, and fragments of endosperm. [163]
A customer looks at refrigerated items at a Grocery Outlet store in Pleasanton, Calif.,. on Thursday, Sept. 15, 2022. "Best before” labels are coming under scrutiny as concerns about food waste ...
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The watering system should not beat down on the grain bed and form a channel. Large breweries have self-closing inlets on the bottom of the tun through which the mash is transferred to the lauter tun, and one outlet, also on the bottom of the tun, into which the spent grains fall after lautering is complete.
Greenfield said that its $800 million grain terminal would have generated more than 1,000 construction jobs, north of 300 permanent jobs, $300 million in state tax revenue and $1.4 million in ...