• 제목/요약/키워드: Rice properties

검색결과 1,978건 처리시간 0.032초

멥쌀 전분과 검물질 혼합물 겔의 특성 (Characteristics of non-waxy rice starch/gum mixture gels)

  • 신말식;권지영;송지영
    • 한국식품조리과학회지
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    • 제21권6호통권90호
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    • pp.942-949
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    • 2005
  • 쌀전분겔의 매트릭스와 구조를 안정화하고 텍스쳐 특성을 개선하기 위하여 멥쌀전분에 다양한 검물질을 혼합하여 겔을 제조하여 형태적, 텍스쳐 특성, 냉동-해동 안정성을 비교하였다. 검물질을 첨가하면 종류에 따라 다르나 쌀전분겔을 조밀하고 균일하여 안정된 매트릭스 갖게 할 수 있었으며 겔란검과 알긴이 효과적이었다. 쌀전분/검질 혼합 겔의 텍스쳐 특성도 검질에 따라 달랐으며 겔란검은 단단하고 알긴은 부드러운 겔을 형성하였다. X-선 회절도에 의하면 쌀전분겔은 V형의 결정형을 나타내며 검을 첨가하였을 때 $2\theta$ = $20^{o}$의 피크가 낮아졌다. 냉동-해동 안정성도 검물질을 혼합하였을 때 증가하였으며 겔란검과 알긴을 첨가한 쌀전분겔이 바람직 하였다.

수도중심(水稻中心) 작부별(作付別) 토양환경(土壤環境) 변화(變化)와 작물수량(作物收量) (Changes of Soil Physico-Chemical Properties and Crop Yieds at the Different Rice-Based Cropping Systems)

  • 김리열;조인상;엄기태
    • 한국토양비료학회지
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    • 제24권1호
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    • pp.22-27
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    • 1991
  • 답이작(畓裏作) 형태별(形態別)로 토양환경(土壤環境) 및 후작(後作)벼의 생산성(生産性) 변화(變化)를 구명(究明)하기 위하여 하성충적지인 미사질양토(微砂質壤土)에서 수도단작(水稻單作) 관행(慣行)으로 풋마늘-수도(水稻), 청예호밀-수도(水稻) 및 알타리무우-수도(水稻) 작부(作付)를 대상(對象)으로 포장시험(圃場試驗)하였다. 1. 토양(土壤)의 물리성(物理性)은 전작물(前作物) 수확후(收穫後) 작물별(作物別) 차이(差異)가 있었으며 이들의 잔류효과는 후작(後作)벼 이앙후(移秧後) 60~70일(日) 정도(程度)까지 유지(維持)되었다. 2. 전작물별(前作物別) 통기성(通氣性)은 청예호일, 풋마늘, 알타리무우 순(順)으로 컸으며 후작(後作)벼 재배시(裁培時) 감수심(減水深) 변화(變化)도 이와 유사(類似)한 경향(傾向)이었다. 3. 표토(表土)의 화학적(化學的)은 작부별(作付別) 시비량(施肥量)에 따라 달라졌고 전작물별(前作物別) 시비량(施肥量) 차이(差異)는 후작(後作)벼 수확기(收穫期)까지도 영향(影響)을 미쳤다. 연간(年間) 3요소(要素) 시비량(施肥量)과 흡수량비(吸收量比)로 볼때 청예호밀-수도(水稻), 알타리무우-수도(水稻), 수도단작(水稻單作), 풋마늘-수도(水稻) 작부(作付) 순(順)으로 효율적(效率的)이었으며 이를 감안(勘案) 후작(後作)벼의 시비량(施肥量) 조절(調節)이 요망(要望)되었다. 4. 후작(後作)벼 뿌리분포(分布)는 청예호밀 재배지(栽培地) 심토(深士)까지 고루 분포(分布)되었으며 표토(表土)에 양분잔존량(養分殘存量)이 많은 풋마늘, 알타리무우 후작(後作)벼 뿌리는 표토(表土)의 분포률율(分布率)이 높은 경향(傾向)이었다. 5. 전작물별(前作物別) 후작(後作)벼 수량(收量)은 풋마늘, 알타리무우, 수도단작(水稻單作), 청예호밀 순(順)이었다.

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비목재펄프를 이용한 도공원지의 특성이 도공지의 물성 및 인쇄적성에 미치는 영향(II) -볏짚 표백 크라프트펄프- (Effects of Base Papers Containing Nonwood Pulp on the Properties and Printabilities of Coated Papers(II) -Rice Straw Bleached Kraft Pulp-)

  • 임현아;강진하;이용규
    • 펄프종이기술
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    • 제32권4호
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    • pp.49-57
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    • 2000
  • This study was carried out to investigate the effect of the type of base papers containing rice straw-BKP on the properties and printabilities of coated papers. Also, it was intended to evaluate the effect of coated paper prepared with anionic and amphoteric latex based coating color. The results obtained from this study were as follows. The fiber length of rice straw-BKP was observed much shorter than those of the wood pulps(Sw-BKP, Hw-BKP). This has effect on physical properties. Therefore, the results of measured physical properties were much lower than those of wood pulps. Also, physical properties tended to increase slightly with the increase of the mixing ratio of Sw-BKP. Opacity of the base paper containing rice straw-BKP, was higher than that of the wood pulps. As the mixing ratio of Sw-BKP increases the opacity tended to decrease. On the other hand, smoothness and roughness to rice straw-BKP were similar with Sw-BKP and its air permeability was lower than those of wood pulps. The optical properties of coated papers containing rice straw-BKP tended to be similar to those of other base papers. The ink receptivity of coated papers containg rice straw-BKP was higher than those of wood pulps and printing gloss was similar to wood pulps. The mixing ratio of Sw-BKP, the ink receptivity and printing gloss of rice straw-BKP were showed no difference irrespective the mixing ratio of Sw-BKP. Meannwhile, amphoteric latex improved the optical properties and printability of coated papers.

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일반계 및 다수계 쌀의 성질 및 밥의 텍스쳐 특성 (Relationship of Properties of Rice and Texture of Japonica and J/Indica Cooked Rice)

  • 홍영희;안홍석;이승교;전승규
    • 한국식품과학회지
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    • 제20권1호
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    • pp.59-62
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    • 1988
  • 일반계 및 다수계 쌀 각 6품종을 대상으로 뜨거운 밥($70^{\circ}C$)과 식은 밥($20^{\circ}C$)의 텍스쳐를 평가하고 쌀 및 전분의 성질과의 상호 관계를 조사 하였다. 일반계와 다수계 밥의 텍스쳐는 유의적인 차이를 보이지 않았다. 밥의 단단함은 식은 밥에서 set-back과 정의상관(${\gamma}$=0.613)관계를 나타내었으며, 쌀의 아밀로스 함량은 밥의 단단함과는 뚜렷한 상관 관계를 보이지 않았다.

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건조 찹쌀가루를 이용한 오븐구이 찰떡의 관능적.물리적 최적화 (반응 표면 분석법을 이용) (Optimization of the Sensory and Physical Properties of Oven-Roasted Glutinous Rice Cakes Prepared with Dry Glutinous Rice Flour (By Response Surface Methodology))

  • 김경미;김옥선;김종군
    • 동아시아식생활학회지
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    • 제17권6호
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    • pp.883-893
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    • 2007
  • To optimize the preparation process for oven-roasted glutinous rice cake, an experiment was derived using a central mixing composite design to determine the optimal conditions. The addition of flour by soaking time as well as sucrose and water, were the independent variables, with the moisture content, color, sensory, and texture properties of the ovenroasted glutinous rice cakes selected as response variables. For the moisture content, color, sensory, and textural properties, we found significant effects for moisture, lightness, redness, hardness, and cohesiveness in the oven-roasted glutinous rice cakes, and water was one of the most influential factors. The optimal mixing conditions for the highest quality oven-roasted glutinous rice cake, in terms of sensory and textural properties, were 266.0 g of water, 25.4 g of sucrose, and 61.5 minutes of soaking time for the glutinous rice flour. The soaking time was in close to the median, whereas the water and sucrose values were slightly above the median.

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옥수수 전분과 찰옥수수 전분 첨가 비율에 따른 Gluten-free 제빵 특성 (Baking Properties of Gluten-free Rice Bread with Different Percentages of Corn Starch and Waxy Corn Starch)

  • 김상숙;정혜영
    • 한국식품영양학회지
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    • 제28권4호
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    • pp.586-593
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    • 2015
  • The baking properties of gluten-free rice bread with different percentages of corn starch and waxy corn starch were investigated. The specific gravity and color (L, a, b) of the dough as well as the appearance, color (L, a, b) and texture of the rice bread were analyzed. Replacement of rice flour with 1, 2.5, 5, 7.5 and 10% corn starch did not have a significant effect on the specific gravity and color of the dough. The volume and specific volume of the rice bread showed an increasing trend as the amount of added corn starch increased. The chewiness, gumminess and hardness of the rice bread showed a decreasing trend as the amount of added corn starch increased. Replacement of rice flour with 1, 5 and 10% waxy corn starch did not have a significant effect on the specific gravity and color of the dough. The color of the rice bread showed an increasing trend as the amount of added waxy corn starch increased. These results suggest that replacement of rice flour with 7.5% corn starch or 1% waxy corn starch is effective for gluten-free rice bread.

왕겨의 화학적 조성 및 왕겨섬유의 형태적 특성 (Chemical Composition of Rice Hull and Morphological Properties of Rice Hull Fibers)

  • 성용주;신수정;오민택
    • 펄프종이기술
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    • 제41권3호
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    • pp.22-28
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    • 2009
  • The rice hull could be the one of the most abundant agricultural waste in Korea. Since the efficient utilization of agricultural waste or byproducts of food industry would be critical for the sustainable growth, this study conducted the investigation of the chemical composition and the morphological properties of rice hull and rice hull fiber. It was found that there was big difference between the outer surface and the inner surface in the chemical composition and the morphological properties. Expecially, the outer surface showed the rugged patterns in which most of silica of rice hull existed. Little or no silica was found in the inner surface and rice hull fiber. The average fiber length of rice hull fiber was 0.45mm which was shorter than that of hardwood fiber. Rice hull fiber showed a round long shape which is typical shape of non-wood fibers

죽순분말을 첨가한 절편(떡)의 특성 (Quality Properties of Rice Cake Containing Bamboo Sprout Powder)

  • 문은우;박헌조;나환식;박정숙
    • 한국식생활문화학회지
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    • 제30권5호
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    • pp.650-655
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    • 2015
  • Bamboo sprout powder was added to rice cake in an effort to improve the quality and functional properties of dough. The contents of crude protein and carbohydrates increased as the amount of bamboo sprout powder increased, whereas moisture contents decreased. According to increasing contents of bamboo sprout powder, total amino acid contents significantly increased. Hunter's L value decreased as contents of bamboo sprout powder increased, whereas sucrose contents increased. Addition of bamboo sprout powder to rice cake increased dietary fiber contents. Sensory scores of rice cake containing 90 g of bamboo sprout powder were the highest of all rice cakes tested. According to the results, adding bamboo sprout powder could improve the quality and sensory characteristics of rice cake.

습식 및 건식 쌀가루의 유지 종류 및 첨가 비율에 따른 쌀빵 품질 특성 (Effects of the Type and Percentage of a Lipid on the Quality Characteristics of Rice Bread Depending on the Use of Wet and Dry Rice Flour)

  • 김상숙;정혜영
    • 한국식품영양학회지
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    • 제31권4호
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    • pp.511-519
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    • 2018
  • The baking properties of rice bread with different percentages of butter and oil in wet and dry rice flour were investigated. The moisture, damaged starch, mean diameter, pasting properties by amylogram and RVA (Rapid Visco Analyzer), as well as thermal properties by DSC (Differential Scanning Calorimetry) of wet and dry rice flour were analyzed. The specific gravity and color (L, a, b) of the dough, as well as the appearance, color (L, a, b) and texture of the rice bread with different percentages of butter and oil in wet and dry rice flour were also analyzed. As a result, the wet rice flour were composed of a noted higher content in moisture, compared to the dry rice flour (p<0.001). The wet rice flour had lower values of damaged starch, higher values of mean diameter and a higher peak viscosity than was noted in the dry rice flour (p<0.001). The wet rice flour showed a higher degree of hydration and gelatinization than was seen in the dry rice flour (p<0.001). The prevailing principle to utilize the replacement of wet rice flour with oil had a significant effect on the volume, specific volume and hardness of the rice bread (p<0.001). The hardness of the rice bread also showed a decreasing trend as the amount of the added oil was increased into the mixture. These results suggest that the replacement of wet rice flour with 5.8% oil is effective for the production of rice bread.

건식, 습식 및 반습식 쌀가루에 의한 쌀빵의 특성 비교 (Bread-making Properties of Rice Flours Produced by Dry, Wet and Semi-wet Milling)

  • 이명희;이영택
    • 한국식품영양과학회지
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    • 제35권7호
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    • pp.886-890
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    • 2006
  • 제분방법을 달리하여 제조한 건식, 습식 및 반습식 쌀가루를 사용하여 제조한 쌀빵의 품질특성을 비교하였다. 습식제분 쌀가루의 제조 시 쌀의 수침온도를 $25^{\circ}C$$55^{\circ}C$로 하였으며 반습식 처리로서 쌀을 살수처리한 후 제분하였다. 쌀가루에 밀가루를 7:3의 비율로 혼합한 복합분에 활성 글루텐을 첨가한 후 mixograph로 반죽의 특성을 측정한 결과 습식제분한 쌀가루에서 반죽시간과 안정성이 증가함을 보여주었다. 습식제분 쌀가루로 제조한 쌀빵이 건식제분과 반습식제분 쌀가루로 제조한 쌀빵에 비해 빵의 체적이 증가했으며, 특히 수침온도에 있어 $55^{\circ}C$의 가온 수침처리가 쌀전분에 변화를 초래하여 상온에서 수침한 쌀가루에 비해 쌀빵의 체적을 향상시켰다. 쌀빵의 저장중 경도의 변화에서 습식제분 쌀가루로 제조한 빵이 가장 낮은 증가폭을 보여주었다.