• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
• /
• pp.966-978
• /
• 1993

A power operated 90.5 hp electric motor) grain flour separator was designed and developed for separation of grain (wheat, corn, chickpea and soybean) flour into various fractions based on the size of the particles of the product. The separator agitating mechanism, feed control, cylindrical separator unit and an eccentric mechanism. The machine was tested for wheat ( variety ; Sujata) flour separation into four fractions, viz ; semolina, Gr-I and II, flour (coarse) and white (fine) flour. Wheat samples (6.8% m.c., db) were first pearled by CIAE pearler for 15.8% bran removal . The pearled wheat grains were then milled for semolina by a burre mill. The product and machine characteristics were determined at different capacities varying from 24 kg/h to 143 kg/h. It was found that 76 kg/h capacity gave reasonably best results in terms of purity and recovery of semolina vis-a-vis the market product. The energy requirement of the machine at no-load was found to be 230 W and at load c nditions, it varied between 36.3-6.4 KJ per kg of fead seperation. The macine could be used by small flour millers small/medium size traders and retailers and other processors for making available various flour products of different particle size in the market for ready use of the consumers.

• 한국식품과학회지
• /
• 제49권6호
• /
• pp.638-643
• /
• 2017

본 연구에서는 머핀의 품질향상을 위해 두류-밀(1:1) 혼합가루로 제조한 머핀의 품질특성을 살펴보았다. 두류가루를 첨가하였을 때 밀가루만으로 제조한 대조군 머핀에 비해 명도가 감소하고 적색도가 증가하였다. 두류첨가 머핀은 대조군에 비해 상대적으로 많이 존재하는 식이섬유에 의해 높은 수분함량을 나타냈으며 조단백과 조회분의 함량도 대조군에 비해 높게 나타났다. 두류가루가 첨가된 머핀은 대조군에 비해 중량이 높았으나 높이와 부피가 감소하였고 기공의 분포도 다소 불규칙적으로 나타났다. 또한 두류가루 첨가로 인하여 머핀의 경도는 증가하였고 반대로 탄력성과 응집성이 유의적으로 감소하였다. 그러나 관능적으로 두류가루를 첨가한 머핀은 색에 대한 선호도가 대조군에 비해 높았으며 전체적인 기호도는 동부가루와 녹두가루로 제조된 머핀은 대조군에 비해 낮았으나 렌틸가루와 병아리콩가루로 제조한 머핀은 대조군과 유사한 결과를 보였다. 본 연구를 통해 두류가루를 밀가루의 50%까지 대체하여 제조한 머핀의 관능특성은 대조군과 거의 유사했고 영양성은 개선되었으며 이는 두류를 활용한 기능성 제빵 제품 개발의 기초자료로 활용될 수 있을 것으로 생각된다.

• 동아시아식생활학회지
• /
• 제23권5호
• /
• pp.586-596
• /
• 2013

This study was designed to investigate the effect of Korean whole wheat flour making pan bread. Korean whole wheat flour was mixed with flour at the level of 10% (WHF10), 20% (WHF20), 30% (WHF30), 40% (WHF40) and 50% (WHF50) in order to make bread. According to mixogram, the CON (control), WHF10, WHF20, WHF30, WHF40, except WHF50 were found to be proper between 3 and 5 min. in terms of peak time. CON and WHF10 for peak value were at the level of over 60%. By increasing the ratio of Korean whole wheat flour, the pH, dough fermentation rate, volume, specific volume and moisture content were decreased, and gumminess, cohesiveness and hardness except springiness, were increased for storage days. In the crumbScan analysis, the addition of Korean whole wheat flour decreased the volume and increased the crumb fineness of pan bread. In the sensory evaluation, WHF30 showed good preference in the aspect of flavor, taste and overall acceptance, but was not significant between WHF20. CON scored the highest points in volume, specific volume, moisture content and texture, but was not significant between WHF20.

• Journal of Microbiology and Biotechnology
• /
• 제32권6호
• /
• pp.768-775
• /
• 2022

In this study we aimed to derive the response surface models for Escherichia coli reduction in wheat flour using atmospheric cold plasma (ACP) with three types of gas. The jet-type atmospheric cold plasma wand system was used with a 30 W power supply, and three gases (argon, air, and nitrogen) were applied as the treatment gas. The operating parameters for process optimization considered were wheat flour mass (g), treatment time (min), and gas flow rate (L/min). The wheat flour samples were artificially contaminated with E. coli at a concentration of 9.25 ± 0.74 log CFU/g. ACP treatments with argon, air, and nitrogen resulted in 2.66, 4.21, and 5.55 log CFU/g reduction of E. coli, respectively, in wheat flour under optimized conditions. The optimized conditions to reduce E. coli were 0.5 g of the flour mass, 15 min of treatment time, and 0.20 L/min of nitrogen gas flow rate, and the predicted highest reduction level from modeling was 5.63 log CFU/g.

• 동아시아식생활학회지
• /
• 제24권6호
• /
• pp.853-861
• /
• 2014

우리밀과 수입밀로 쿠키, 머핀, 바게트를 제조하여 총 페놀 함량, 항산화 효과, 단백질 소화도를 비교하였다. 또한 쿠키와 머핀 제품에 천년초와 홍화씨를 첨가하여 총 페놀 함량, 항산화 효과 및 단백질 소화도에 미치는 영향을 연구하였다. 천년초의 첨가는 우리밀 쿠키 및 머핀의 80% methanol 추출물에서 총 페놀 함량 및 항산화 효과를 증가시켰으나, 유의적인 차이는 보이지 않았다. 홍화씨 첨가는 우리밀 쿠키의 80% ethanol과 80% methanol 추출물의 총 페놀 함량을 유의적으로 증가시켜 기능성 소재의 첨가가 쿠키의 품질 특성을 향상시키는 결과를 보여주었다. 우리밀과 수입밀로 만든 쿠키, 머핀, 바게트의 80% ethanol 추출물에서 우리밀로 만든 머핀의 총 페놀 함량이 4.53 mg QE/g으로 가장 높게 나타나, 수입밀로 만든 머핀보다 약 1.5배 높게 나타났다. 80% methanol 추출물은 수입밀 바게트가 우리밀 바게트보다 약 1.2배 높게 나타나 용매에 따라 다른 경향을 나타냈다. 80% ethanol 추출물과 80% methanol 추출물의 총 페놀 함량을 비교하면 ethanol 추출물이 모든 시료에서 높은 총 페놀 함량을 보여, 우리밀에서 더 높은 총 페놀 함량을 나타냈다. 우리밀과 수입밀의 ethyl acetate 추출물의 항산화 효과는 유의적인 차이는 나타나지 않았으나, 머핀의 80% methanol 추출물은 우리밀이 수입밀보다 2.4배 가량 높은 항산화 효과를 나타냈다. 그 결과, 추출 용매에 따라 차이는 있으나, 우리밀 제품이 수입밀 제품보다 높은 항산화 효과를 가진다고 추정된다. 단백질 소화도에서 우리밀과 수입밀을 비교해 보면 모든 제품에서 유의적인 차이를 보이지 않았다. 결과적으로 단백질 소화도와 같은 품질 특성은 우리밀이 수입밀의 품질과 유사하며, 항산화 효과와 총 페놀 함량은 우리밀 제품이 우수한 결과를 보여 기능성 면에서 우수한 밀 품종이라고 사료된다.

• 한국식품조리과학회지
• /
• 제22권4호통권94호
• /
• pp.419-427
• /
• 2006

The purpose of this study is to promote the substitution of rice flour for wheat flour in making bread and thus the consumption of rice by examining the effect of particle size of rice flour on leavening rice bread. For this purpose, several experiments were carried out. With regard to particle size distribution, 59.45% of wheat flour had passed 200 mesh and 3 kinds of rice flour milled to penetrate into 20, 35, and 45 mesh (S1, S2 and S3) had passed 21.88%, 33.1% and 36.38% of those for 200 mesh, respectively. To leaven the rice flour dough to bread, 25% of vital gluten was needed. To determine the optimal water quantity for rice bread dough, the hardness of wheat and rice flour dough was measured by rheometer. The appropriate water quantity for S1, S2 and S3 was set at 285 ml , 295 ml and 335${\sim}$340m1, respectively. The loaf volume index of the wheat flour bread was 6.24, while that of and rice flour bread S1, S2 and S3 was 5.38, 5.50 and 5.75, respectively. These results indicated that the loaf volume index of rice flour bread is lower than that of wheat flour bread, but that the volume of rice flour bread was increased with fuel particle size of rice flour. Scanning electron microscopy (SEM), image of the wheat bread tissue at a magnification of 35 times showed long, large, oval-shaped, air cells and thin cell membrane, as well as small air cells, whereas the images of rice flour showed angular, circular, air cells and rough and thick cell membrane. The size and number of air cells in the rice bread were larger in S2 and S3 with fuel particle flours than in S1. In particular, the bread made with S3 contained many air cells that were as large as those in the wheat bread were. In addition, when the inner cell wall was magnified 1500 times, almost no small air cell was observed in C and S3, whereas many fine air cells were observed in the cell wall of S1 and S2.

• Food Science and Biotechnology
• /
• 제16권6호
• /
• pp.918-923
• /
• 2007

To investigate the relationship of wheat single kernel characteristics with end-use properties, 183 soft wheat cultivars and lines were evaluated for milling quality characteristics (kernel hardness, kernel and flour protein, flour ash), and end-use properties (i.e., as ingredients in sugar-snap cookies, sponge cake). Significant positive correlations occurred among wheat hardness parameters including near-infrared reflectance (NIR) score and single kernel characterization system (SKCS). The SKCS characteristics were also significantly correlated with conventional wheat quality parameters such as kernel size, wheat protein content, and straight-grade flour yield. The cookie diameter and cake volume were negatively correlated with NIR and SKCS hardness, and there was an inverse relationship between flour protein contents and kernel weights or sizes. Sugar-snap cookie diameter was positively correlated with sponge cake volume.

• 한국수산과학회지
• /
• 제43권6호
• /
• pp.747-750
• /
• 2010

This study investigated the effect of wheat flour content in the diet on the growth of the snail Semisulcospira gottschei. Six diets were prepared containing wheat flour contents of 35, 40, 45, 50, 55, and 60%. Three replicate groups of snails (average weight 0.61 g) were fed each experimental diet for 8 weeks. The survival was above 85% in all groups, and did not differ significantly among treatments. The weight gain of snails fed the diets containing 35 and 40% wheat flour was significantly higher than that of snails fed the other diets (P<0.05), and the weight gain decreased when the dietary wheat flour content increased beyond 45%. The crude protein and ash contents in snails were significantly affected by the dietary wheat flour content (P<0.05). Therefore, a diet containing 35~40% wheat flour produces the optimal growth of snails. The results of this study will be used to develop cost-effective diets for commercial snail production.

• 한국식품과학회지
• /
• 제36권5호
• /
• pp.749-753
• /
• 2004

제빵에 주요 원료인 쇼트닝 대신 최근 기능성 식품으로 널리 알려지고 있는 올리브유를 대체 원료로 사용하여 건강에 좋은 제품을 제조하기 위해 그 첨가 비율을 달리 하면서 제빵 반죽의 물리적 특성인 파리노그램, 아밀로그램 및 익스텐소그램과 제빵 품질에 영향을 미치는 반죽의 발효 팽창력을 조사하였다. 파리노그램에서 올리브유 4%와 6%를 첨가한 반죽은 대조구(쇼트닝 4%)와 비교하여 발전 시간, 탄력도 및 강력도는 감소한 반면에 안정도와 흡수율은 유사하였다. 아밀로그램에서 최고 점도는 감소하였으나, 호화개시온도와 최고점도시온도는 유사하였다. 익스텐소그램에서 면적은 발효시간 45분에서 올리브유 6%를 첨가하였을 때는 대조구(쇼트닝 4%)와 비교하여 증가하였으나 다른 시험구는 유사하였다. 반죽의 발효 팽창력 특성은 올리브유 4%를 첨가한 경우에는 대조구와 비교하여 낮은 값을 나타내었으나, 표준 편차 이내로 유사하였다. 올리브유 6%는 대조구보다 낮은 팽창력을 나타내었으며, 유지를 첨가하지 않은 반죽과 비교해서 팽창력이 높게 나타났다.

• 한국식품과학회지
• /
• 제11권2호
• /
• pp.99-104
• /
• 1979

밀가루에 멥쌀(밀양 23호) 또는 통일찹쌀 가루를 10, 20 및 30% 대체한 복합분의 물리적 성질 및 제빵 적성을 검토하였다. 밀-밀양 복합분은 밀-찹쌀 복합분 보다 높은 점도를 보였다. 복합분의 파리노그라프 안정성은 밀가루 보다 짧았으나 최적 반죽발전 시간은 비슷하였다. 제빵 적성은 밀-밀양 복합분이 다소 좋은 결과를 보였고 대체로 밀가루(멥쌀 또는 찹쌀)를 20%수준까지는 대체할 수 있을 것으로 보인다. 10%수준으로는 밀가루 빵에 크게 손색이 없는 제품이 가능하였다.