Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Effects of Waxy and Normal Hull-less Barley Flours on Bread-making Properties

찰성 및 메성 쌀보리가루의 첨가가 제빵 특성에 미치는 영향

  • Lee, Young-Tack (Department of Food and Bioengineering, Kyungwon University) ;
  • Chang, Hak-Gil (Department of Food and Bioengineering, Kyungwon University)
  • 이영택 (경원대학교 식품생물공학과) ;
  • 장학길 (경원대학교 식품생물공학과)
  • Published : 2003.10.01
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Abstract

Replacement of wheat flour by 10, 20 30% waxy and normal (non-waxy) hull-less barley flour was tested for the effects on bread-making properties. The addition of waxy hull-less barley flour resulted in lower amylograph pasting temperature, peak, and set back viscosities and in higher water absorption, compared with normal hull-less barley flour. Increasing proportions of hull-less barley flour significantly decreased the loaf volume and had deleterious effects on subjective bread scoring. Replacement of 10% of wheat flour by both waxy and normal hull-less barley flour did not significantly affect bread characteristics. However, significant differences in bread quality were observed between the control bread and bread containing more than 20% barley flour, with the normal barley flour showing slightly better scores in organoleptical preference. Textural measurements of crumb firmness showed that the bread containing 20% waxy hull-less barley flour hardened slower during 5-day storage at $25^{\circ}C$ than bread containing normal hull-lee barley flour.

찰성 및 메성 쌀보리가루을 밀가루에 $10{\sim}30$ 대체한 복합분에 대하여 반죽의 물리적 특성 및 제빵 특성을 비교 분석하였다. Amylograph 호화특성에서 찰성 쌀보리가루를 첨가한 복합분은 호화개시온도와 최고점도가 메성에 비해 낮았으며 set back 역시 현저히 낮아 전분의 노화가 느리게 진행됨을 제시해 주었다, Mixograph에 의한 반죽의 리올로지 특성은 찰성 쌀보리가루 복합분의 peak height가 메성에 비해 높은 반면 mixing time은 약간 낮게 나타났다. 쌀보리가루의 첨가는 빵의 체적을 떨어뜨리고 주간적인 관능평가에서 대조구와 비교하여 찰성 및 메성 쌀보리가루 10% 첨가수준에서는 서로 유의적인 차이가 없었으나 20% 첨가수준부터는 대조구에 비해 큰 차이로 품질이 떨어졌으며 메성이 기호도에 있어 다소 높게 평가되었다. 20% 쌀보리가루를 첨가한 빵의 저장중 성도변화를 조사한 결과 찰성 쌀보리가루를 첨가한 빵의 경도가 메성에 비해 낮았으며 빵의 staling이 보다 완만히 진행됨을 나타내 주었다.

Keywords

References

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