For the study of the effects of low gamma-irradiation on malt enrymes, barley seeds were irradiated by Co-60, with 10, 100, 1,000 and 10,000 rails respectively.
The experiments on the germinated green malt were resulted as follows.
(1) By the low doses below 1,000 rads the fresh weights of green malts increased but at the high doses of 10,000 rails they decreased.
(2) In all doses α-amylase activity and saccharifying ability were expedited, showing the increased effects of 26-69% and 87-178% respectively and their peaks at 100 rads.
(3) Protease activity showed almost no changes ein the low doses below 1,000 rads and decreased remarkably at the high doses of 10,000 rads.
(4) Reducing sugar contents of green malts were decreased, particularly in 100 and 1,000 rads.
(5) Soluble protein contents of green malts were increased in all doses and had their highest value at 100 rads.
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