Silicates
Please check back later for additional changes
Silicates are abundant in the barley husk and they are soluble as colloids. The presence of silicates is are correlated with beer haze.[1]
Silica is ubiquitous in water supplies, and can also be extracted as silicate from grain husks. High levels can slow lautering and haze in beer.[2]
Is excessive silica is extracted from grain (e.g. from sparging at a high pH), it can impair fermentation.[3]
Beer is a rich source of dietary silicon which is readily absorbed by the body. This silicon comes from two natural sources – water and barley (The Brewer of Europe, 2004). In the form of silicate, it is soluble as a colloid and can be detected in all beer hazes (Kunze, 2004 ).[4]
Another component worth looking at in brew water is silica. Silica also has limited solubility in water and therefore should be removed to levels below 25 ppm[5]
See also[edit]
References[edit]
- ↑ kunze ch1 p52
- ↑ water ch3
- ↑ Comrie AA. Brewing liquor—a review. J Inst Brew. 1967;73(4):335–346.
- ↑ Montanari L, Mayer H, Marconi O, Fantozzi P. Chapter 34: Minerals in beer. In: Preedy VR, ed. Beer in Health and Disease Prevention. Academic Press; 2009:359–365.
- ↑ Eumann M. Chapter 9: Water in brewing. In: Bamforth CW, ed. Brewing: New Technologies. Woodhead Publishing; 2006:183–207.