• Title/Summary/Keyword: Diastic power

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Quality Characteristics of Korean Malt Barley Varieties (한국산(韓國産) 맥주맥(麥酒麥)의 품질특성(品質特性)에 관(關)한 연구(硏究))

  • Shin, H.K.;Kim, Y.S.;Bae, S.H.;Kim, Z.U.
    • Applied Biological Chemistry
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    • v.23 no.3
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    • pp.150-156
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    • 1980
  • Local malt barleys have been examined for the quality characteristics. Regional differences in quality characteristics of malt barley were observed in a single variety. Promising barley varieties for brewing, in terms of protein contents, germinating power and diastic power were Sacheon No. 2,6,9, Mokpo 11 and 12. Possible use of certain malt barleys is suggested and discussed.

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Effect of Water Table Depth in Different Soil Texture on Quality of Barley and Wheat Grain (토성별 지하수위가 밀, 보리의 품질에 미치는 영향)

  • 이홍석;구자환
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.40 no.3
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    • pp.278-284
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    • 1995
  • This experiment was performed to characterize the optimum water table level for the grain quality, seed germination and diastic power of barley(var. Olbori) and wheat(var. Grumil). Olbori and Grumil grew in the 550 liter plastic pot that filled with silt loam or sandy loam. During the whole growth period, the underground water level adjusted to be 20, 30, 40, 50 and 70cm. Filled grain ratio and specific gravity were not affected by soil texture and water table. Low level of water table caused the increase of 1,000 grain weight in wheat and barley, but soil texture didn't. Crude protein content tended to be high as the water table level was high, especially in wheat. Change in crude protein content was affected by underground water level more than soil texture. And the affection was slightly higher in sandy loam than silt loam, but the difference was small. The higher level of water table led to the lower crude lipid content in barley and wheat grain. Crude lipid content of both wheat and barley grain grown in sandy loam was higher than those grown in silt loam. As the water table level down, the ash content of barley and wheat grain tend to increase, especially in sandy loam. Wheat flour yield was not affected by soil texture. It was about 65% at 20cm of water level and above 67% at 40cm water level. The seed germination of wheat and barley was more than 95% when the seeds were placed at 2$0^{\circ}C$ for three days. Regardless of soil texture, the lowest germination was seen at 20cm of water table level. And the seed germination rate increased as the underground water level became low. Above 89% of barley grains were germinated within 48 hours except 20cm level of water table in sandy loam. Diastic power of germinated barley was the lowest at 20cm of water table level, and it was almost unchanged below 30cm of water table level. And also it was not affected by soil texture.

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