• 한국유기농업학회지
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• 제19권spc호
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• pp.234-237
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• 2011

This study was carried out to investigate the effect of soil covering materials such as rice bran, rice hull and saw dust on garlic growth through a field experiment in wintertime. Rice bran was the smallest in term of particle size, but it recorded the highest level of bulk density. The missing plant rate after winter season was relatively high, 59.3%, and that of soil covering materials stood at the low level of 10%. Other growth factors recorded the highest level during application of rice bran. In terms of chemical properties of soil-covering materials, rice bran recorded the highest level of 1.84, 2.34 and 0.16% in the content of N, P, and K, respectively. The subsoil temperature was higher by application of rice bran as compared to that of other materials which stood at the lowest temperature ($-9^{\circ}C$).

• 대한영양사협회학술지
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• 제25권2호
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• pp.105-114
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• 2019

This study examined the quality characteristics of brown rice Sulgidduk containing acorn powder and the optimal mixing rate (0%, 5%, 10%, and 15%). The moisture contents of brown rice Sulgidduk increased with increasing amount of acorn powder. The DPPH free radical scavenging activities (16.15%~28.06%) and ABTS free radical scavenging activities (22.98%~42.81%) of the brown rice Sulgidduk increased with increasing acorn powder content. The L value of the Hunter's color value decreased with increasing amount of acorn powder. The hardness and chewiness of brown rice Sulgidduk increased with increasing amount of acorn powder. The brown rice Sulgidduk containing 10% acorn powder showed the highest score with regard to the sensory characteristics. These results suggest that the most desirable amount of acorn powder is 10% and the addition of acorn powder could contribute positively toward the quality characteristics of brown rice Sulgidduk.

• 한국작물학회지
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• 제51권spc1호
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• pp.12-20
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• 2006

정조 함수율과 저장온도에 따른 쌀 품질 변화를 구명하고자 신동진벼와 동진1호를 함수율 $13{\sim}14,\;15{\sim}16,\;{\sim}18%$로 조절하여 상온 및 저온에서 저장기간에 따른 품질관련 특성을 조사하였다. 1. 정조 함수율이 많고 저장온도가 높을수록 호흡율이 높았으며 함수율에 의한 호흡율의 차이가 저장온도에 의한 차이보다 컸다. 2. 발아율은 16개월 저온저장후 80%이상을 유지하였으나 상온에서는 저장기간이 경과함에 따라 급격히 감소하였으며 12개월 저장까지는 함수율이 높은 $17{\sim}18%$에서 발아율이 높았으나 그 이후에는 $15{\sim}16%$에서 높았고, $13{\sim}14%$에서는 16개월 저장후 10%이하의 낮은 발아율을 나타냈다. 3. 밥의 윤기치는 저장 초기에 급격히 감소하다가 그 후 완만해졌으며 저온에서 상온에 비하여 높았고 함수율이 많을수록 높게 유지되다가 12개월 후에는 큰 차이가 없었다. 4. 현미지방산도는 저장기간이 경과할수록 8개월까지 급격히 증가하였으며 저온에서 상온보다 낮았고, 신동진벼가 동진1호에 비하여 낮은 경향이었다. 5. 식미관능평가치는 상온에 비하여 저온저장에서 양호하였고 신동진벼가 동진1호에 비하여 높았으며 저온저장 16개월 후 신동진벼는 함수율 $17{\sim}18%$에서, 동진1호는 $15{\sim}16%$에서 우수하였으며 상온저장시는 신동진벼와 동진1호 모두 함수율 $15{\sim}16%$에서 좋았다. 6. 식미관능평가치는 현미색도 b값 > 밥의 윤기치 > 현미 색도 L값의 순으로 각각 0.731**, 0.625*, 0.615*의 정의 상관성을 나타냈으며 강하점도, 최고점도, 호화개시온도, 현미 지방산도와는 각각 -0.864**, -0.795**, -0.786**, -0.779**의 고도로 유의한 부의 상관성을 나타냈다.

• Asian-Australasian Journal of Animal Sciences
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• 제2권3호
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• pp.311-314
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• 1989

• 한국유기농업학회지
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• 제9권3호
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• pp.45-71
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• 2001

The duck-rice forming system is increasingly spread up throughout Korea since 1992. It is discussed the rice field, rice quality, weed and pest management in the duck-rice weeding system compared to conventional farming system. Moreover the optimizing duck population, system management and fertilizer application rate were reported. Energy input and output by duck-rice farming system were carefully compared with those of low input sustainable paddy field and conventional farming paddy field. To find out the environmentally sound function of duck-rice system, the total nitrogen in paddy soil and paddy water, and nitrogen cycle in paddy rice cultivation system were analysed. finally the input and output were calculated, and ecological characteristic were determined in terms of nitrogen balance, labor input, animal input, renewable energy input, turnover of soil organic matter, energy loss, non-renewable indirect and direct energy input. It was concluded duck-rice weeding system could be recommended in terms of net only environmentally sound, but also farmer's income. But there are still some research needs for successful adaption of duck-rice farming to investigate to determine the optimal population of duck in rice paddy field unit, release time of duckling, duck management after release, and strategy for duck marketing and duck processing.

• 한국식품영양학회지
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• 제31권1호
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• pp.94-103
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• 2018

The quality characteristics of bread with black rice flour were investigated to find the most preferred ratio of black rice flour. Its moisture, ash content, crude protein, crude fat, amino acids, and texture were analyzed. A sensory evaluation was also performed. The moisture and crude fat of bread with black rice flour were decreased in proportion to the added amount of black rice flour, but the crude protein and ash content were increased. The volume of bread decreased as the added amount of black rice flour increased. The pH value of bread increased in proportion to the added amount of black rice flour. The value of brightness and yellowness of the dough were the highest in the control. The added amount of black rice flour was negatively correlated with the brightness and the yellowness of the dough, but was positively correlated with the redness. Total free amino acids were found, and the dough with 5% black rice flour contained the highest amount, followed by 3%, 2%, and 1%. When evaluating the storage days, the springiness and cohesiveness of bread with black rice flour they decreased with time, but the chewiness and brittleness increased. Regarding the taste, preference was given to the bread with 2% black rice flour, which had the lowest rejection rate and was not affected by time in any meaningful sense. The bread with 2% black rice flour won the highest scores in the overall preference measurement.

• 한국식품조리과학회지
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• 제16권1호
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• pp.91-97
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• 2000

본 연구는 외국산 쌀과 국산 쌀의 취반 특성을 비교하기 위하여 수입 쌀 2종류(1998년도산 중국산 및 태국산)와 국산 쌀 2종류(1997년도산 및 1998년도산 추청)에 대하여 쌀 입자의 형태, 흡수특성, 일반 성분 및 색도, 점도특성, 취반특성, 텍스쳐특성, 관능특성 등을 조사하였다. 그 결과 태국산 쌀은 장립종으로서 흡수율이 낮고 amylose 함량, 호화 온도가 높았으며, 텍스쳐는 단단하고 찰기가 없어 취반 특성이 가장 떨어졌다. 1998년도산 국산 쌀의 취반 특성이 종합적으로 가장 뛰어났고, 중국산 쌀의 취반 특성은 1998년도산 국산 쌀보다는 약간 떨어졌지만 1997년도산 쌀보다는 조금 낫거나 비슷하였다.

• 한국자원식물학회지
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• 제30권3호
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• pp.318-322
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• 2017

The study was carried out to determine the changes of growth characteristics, anthocyanidin, and brown rice yield grown at coast and inland areas apart from the east coastline of Gyeongsangbuk-do province. Number of spikelets per panicle was much more increased in inland area. Regional difference in number of spikelets per panicle was observed in Jeongjinju cultivar. Among these red rice cultivars, the highest brown rice yield was Jeongjinju rice cultivar having 702 kg in inland area and 692 ㎏ in coast area, respectively. Anthocyanidin content ranged 524 to $610{\mu}g/g$ dry weight basis. Cyanidin content was 11.4 to 14.0 times higher than that of delphinidin under coast and inland area. Anthocyanidin content was higher in rice cultivar grown at coast area. Highest head brown rice rate was only observed in Geonganghongmi to 95.2 at coast area and 95.4 inland area. In considering brown rice yield and pigment content, Hongjinju rice cultivar was recommended in optimal pigment rice cultivar in eastern coast of Gyeongsangbuk-do Province.

• Journal of Biosystems Engineering
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• 제18권4호
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• pp.390-401
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• 1993

This study was conducted to analyze the optimum capacity of Rice Processing Complex (RPC) and to select the optimum location of RPC based on the analysis of rice production and its commercializing rate for each county of major area of paddy field nationally. The study results showed that 500 of RPC having a drying capacity of 3,000 tons of rice would be needed nationally based on the selection analysis.

• Journal of Plant Biotechnology
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• 제34권1호
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• pp.47-53
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• 2007

To assess the risk of genetically modified (GM) rice on the agricultural ecosystem, agronomic characteristics, pollen longevity and outcrossing rate between GM (Iksan 483 and Milyang 204) and non-GM (their wild types and female parents) varieties were investigated using the bar gene as a tracer marker in paddy field. The agronomic characteristics of two GM rice were similar to their female-parents (non-GM rice) except heading date and 1,000 grain weight of Iksan 483, and they did not show a difference by the introgression of the bar gene as the genetic traits of rice varieties. Pollen viability was more than 90% just after shedding, and it was rapidly decreased below 50% at 5 minutes after shedding both GM and non-GM varieties. The Pollen longevity was lost after 30 minutes of anthesis. When the distance of gene flow from GM to non-GM rice detected to 6 m from the edge of GM rice plant, the maximum distance of pollen dispersal was 4.5m and 3.9m in Iksan 483 and Milyang 204, respectively, and that was increased in order of west, south, east, and north to the dominant wind direction, west-south. Mean outcrossing rate was very low as 0.003 and 0.001% within 1.5 m from the edge of Iksan 483 and Milyang 204, and the GM hybrids by the pollen dispersal did not detected over 4.5 m from the edge of GM rice plant. The results may help to establish the strategy which reduce the risk of pollen-mediated gene flow between GM and non-GM rice.