Yeast: Difference between revisions
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Minerals such as zinc, manganese, magnesium, and calcium are found in trace amounts in worts and are required for adequate fermentation performance. A poor quality barley crop can give rise to worts that are deficient in these metals. This, in turn, can lead to inconsistencies in the process and product, including lagging fermentations and poor yeast quality.<ref name=brobow>Bromberg SK, Bower PA, Duncombe GR, et al. [https://www.tandfonline.com/doi/abs/10.1094/ASBCJ-55-0123 Requirements for zinc, manganese, calcium, and magnesium in wort.] ''J Am Soc Brew Chem.'' 1997;55(3):123–128.</ref> | Minerals such as zinc, manganese, magnesium, and calcium are found in trace amounts in worts and are required for adequate fermentation performance. A poor quality barley crop can give rise to worts that are deficient in these metals. This, in turn, can lead to inconsistencies in the process and product, including lagging fermentations and poor yeast quality.<ref name=brobow>Bromberg SK, Bower PA, Duncombe GR, et al. [https://www.tandfonline.com/doi/abs/10.1094/ASBCJ-55-0123 Requirements for zinc, manganese, calcium, and magnesium in wort.] ''J Am Soc Brew Chem.'' 1997;55(3):123–128.</ref> | ||
The most important metals that influence yeast fermentation processes are potassium and magnesium (as bulk metals), and calcium, manganese, iron, copper and zinc (as trace metals).<ref name=walden>Walker G, De Nicola R, Anthony S, Learmonth R. [https://research.usq.edu.au/download/286887950bc7e5fc18959042c5efa3ddb1798fc69584bc7ae41fb1680bbf81b6/239682/Walker-De_Nicola__Anthony_Learmonth_aper_IBD_Hobart_2006.pdf Yeast-metal interactions: impact on brewing and distilling fermentations.] In: Proceedings of the Institute of Brewing & Distilling Asia Pacific Section 2006 Convention. 2006.</ref> | |||