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한국자원식물학회 / v.4, no.3, 2001년, pp.140-146 
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( $eta$-glucan Contents and Their Characteristics of Winter Cereals According to Particle Sizes and Milling Recoveries ) |
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| 초 록 |
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| This study was conducted to investigate the $eta$-glucan contents and their characteristics of winter cereals according to particle sizes and milling recoveries. Sieved fractions differed in their average contents of $eta$-glucans, and the coarse fraction had higher contents of $eta$-glucan than finely milled fractions. In all winter cereals, the $eta$-glucan contents of raw flours were higher than those of their brans, and the highest $eta$-glucan contents of every cereals were observed at 100 mesh > or 100-140 mesh fractions except the Chalssalbori fractions which showed the higest $eta$-glucan contents (12.9%) at 140-200 mesh fraction. As compared with the $eta$-glucan content of Chalbori among the various milling recoveries, the $eta$-glucan was distributed more evenly throughout the endosperm but $eta$-glucan content in bran of Chalbori was only 1.5%. However, $eta$-glucan content of Chalssalbori (hull-less waxy barley) was the highest in the subaleurone region (8.2%) and declined slightly toward inner layers of grain. This results suggest that $eta$-glucan distribution between high (Chalbori) and low $eta$-glucan barley (Chalssalbori) may explain the difference in milling performance of barley. On the other hand, $eta$-glucan contents of two rye varieties (Chilbohomil, Chunchoohomil) were lower than those of two waxy barley varieties, and the higest $eta$-glucan contents were observed at the 60% milling recoveries. In all winter cereals, the L-values (lightness) of raw flours were higher than those of brans. And the L-values of barley varieties were higher than those of oat and rye varieties. As the particle sizes and milling recovery ratios were decreased, the L-value were increased. The a-values (redness) in brans of every winter cereals were higher than those of every particle size flours and every milling ratio fractions, and this tendency was observed in the b-values (yellowness) of every particle size of cereal flours. The L and b-value of barley, the b-value of oat, and L, a, b-value of rye have the significant relationship with the $eta$-glucan contents, respectively. This results represent the fact that $eta$-glucans affected the color of the flours and pounded grains of winter cereals. |
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| 키워드 |
| barley;${eta}$-glucan;Huter color value;milling recoveries;oat;particle sire;rye; |
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Plant Resources / v.4, no.3, 2001년, pp.140-146
한국자원식물학회
ISSN : 1226-8771
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111921401875)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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