REGULATION OF MALTING USING NANOBIOCOMPOSITES

There was conducted a search for environmentally friendly regulators of malting barley, which allowed reducing time of germination and weight losses with quality of malt maintained. Laboratory experiments have proved that the growth regulators prepared from plant material by mechanochemical activation (nanobiocomposites) have a significant impact on malting of Acha cultivar of brewer’s barley. It has been established that germination of seeds at 20 °C during 5 days is accompanied by the rapid growth of roots and shoots (malt weight loss reaches 26-29%); 3-day germination decreases losses down to 1.6-7.6%, but remains malting unfinished. The composite CL-06 prepared from larch bark stimulates starch and protein fermentation as evidenced by increased glucoamylase activity as well as glucose and formol nitrogen content rising as compared to the control. Malting mode at the room temperature with CL-06 addition at 10 mg/g dose makes it possible to reduce germination time and cut costs for cooling grain comparably to the standard technology. It has been proved that the composites studied enhance the fermentation activity at low temperature (14-15 °C) that allows obtaining malt of good or satisfactory quality during 4 to 5 days. The CL-06 composite of larch bark at 10mg/g dose was demonstrated as the most stable and promising regulator for reduced malting period.

солод, ячмень, солодоращение, солодование, ферментация, качество солода, регуляторы роста, нанобиокомпозиты, malt, barley, malting, fermentation, malt quality, growth regulators, nanobiocomposites

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