A lot should be considered when you start your brewery like craft brew tech, brewery equipment cost and price,find a location for brewery equipment, license and regulation of a brewery. This article column is specially to answer some common question during brewing.
What is the dormancy period of barley and how to remove it?
The dormancy period of barley is caused by germination inhibitors, which are present in the husk and must be decomposed or oxidized during ripening.
"Embryo" has no germinating ability under the optimum conditions (such as oxygen, water and temperature). The newly harvested barley generally lasts for 6-8 weeks before wheat production. This period is called barley dormancy period.
The following methods can be used to remove the dormancy period.
① Remove the husk, seed coat and pericarp of barley, or drill holes in the cortex near the embryo.
② Barley was heated to 40 ~ 50 ℃ to promote the oxidation of germination inhibitors in the peel. Or add 1% hydrogen peroxide solution, oxygen can enter the peel and seed coat. The addition of 0.05% H2S or mercaptan and 1% thiourea could inhibit the phenoloxidase in the peel and provide more oxygen for the embryo.
③ Gibberellin can stimulate the production of glutathione and cysteine and promote the formation of enzyme.
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