Bio treatment of brewery barley

Barley preservation in big bulks has challenges, because for many buyers and maltsters, only 2% of broken grains is accepted. Meaning that the vacuum level have to be adjusted in order to be effective but also to make sure that the grain doesn’t break.
VacQPack recognizes such challenges and its machinery is prepared to comply with such conditions, because it’s an unique technology capable of measuring accurately the pressure level inside the package.

Problems of high level of moisture on storage of barley are well known and the standards are a top moisture content of 14%. Our EVOH gas tight barrier delivers very low transmission rates of water vapor and oxygen. Problems with instable or uncontrollable moisture are no longer.

Common fumigation by phosphine can be replaced by a modified atmosphere approach as studies on grains have been proving.

Once the moisture content on barley grain is measured and the values accepted, CO2 can be flushed without hazards of acidification. CO2 will promote a more rapid effect on pest control and can be freely used on food.

N2 can be also applied as an option of an inert gas. By comparison with CO2, has no risks of reaction with moisture to produce acid and on the other hand, takes more time to preform pest control, although equally effective.

Barley preservation

Hordeum vulgare

Source of molybdenum, manganese, dietary fiber, and selenium, copper, vitamin B1, chromium, phosphorus, magnesium, and niacin.

Barley grain must be dried before storage. Often, the crop is left in the field until the moisture content is reduced to 12-14%.
Feed efficiency improves with the removal of hulls, grinding, or the breaking of the bran layer. Common processes include rolling (dry or steam rolling), flaking, grinding, and pelleting.

A known risk on barley preservation is the Penicillium verrucosum growth and Ochratoxin A (OA) formation. To overcome such hazard, barley should be dried up to 13% of moisture and kept monitored ant the same rate for an effective long-term storage.