• 한국식품과학회지
• /
• 제36권5호
• /
• pp.812-817
• /
• 2004

한국 전통약주와 기존에 암세포주에 대한 세포독성이 보고되어 있는 알코올 음료에 대한 항종양 세포독성을 비교하기 위하여 무증자 발효 방법으로 발효시키면서 한약재를 첨가한 전통약주I과 뽕잎, 메밀 등을 첨가한 전통약주II, 비교 시료로 적포도주, 백포도주, 맥주, 일본 청주 등에 대하여 연구하였다. 각 시료에 대하여 10-80배까지 단계적으로 희석하여 DLD-1, HepG2, K562, EMT6, LLC1에 처리하였을 때, 인체유래 대장암 세포주인 DLD-1의 경우 적포도주에서만 강한 세포독성이 확인되었는데, 전통약주I의 경우 그 농축액에서 DLD-1에 대하여 적포도주와 유사한 세포독성을 확인할 수 있었다. 나머지 4종의 암세포주에서는 10-20배 희석배수에서 적포도주, 전통약주I, 전통약주II가 세포독성을 보였으나, 각 암세포주의 종류에 따라서 세포독성은 약간씩 차이를 보였다. HepG2, K562, EMT6의 경우 10배 희석배수에서 모두 비슷한 세포독성을 보인 반면에 마우스 유래 폐암세포주인 LLC1의 경우에는 전통약주I과 전통약주II의 세포독성이 적포도주보다 우수한 것을 확인하였다. 본 연구의 결과에 의하면 이러한 항암효과는 전통약주에 존재하는 미지의 약리성분이 작용하는 것으로 판단되었다.

• 한국유기농업학회지
• /
• 제19권spc호
• /
• pp.119-122
• /
• 2011

Among the developed bio-degradable polymer films as compared with transparent film(White), black polymer film was significantly more effective for controlling weeds in red pepper. Also, we found that white and black polymer mulching had 81.8% and 97.9% of managing weed controlling effects in rice, respectively. Compared to non-mulched rice paddy with water supply, the non-mulched rice paddy without any water supply has stopped its growth at 41 days after transplanting, while polymer-mulched rice paddy without water supply had about 60% of normally growing rice plants. This shows the polymer treatment has a remarkable effect on water and power saving, solution of herbicidal resistance, avoidance of herbicidal influence to eco-system etc. When the naturally decomposing polymer was used, a temperature was elevated as high as $4.7^{\circ}C$ on maximum and $2.6^{\circ}C$ on average. Also the naturally decomposing polymer accelerated rooting by 7 days and lowered a stress level from transplanting. The weed control effect mulched by polymer was remarkable as 98.7%. The polymer now, after 294 days treated on the rice paddy, has been completely decomposed.

• 박물관보존과학
• /
• 제8권
• /
• pp.31-40
• /
• 2007

국립중앙박물관 보존과학팀에서는 국립지방박물관 지원사업의 일환으로 국립전주박물관에서 의뢰한 소장품 도자기 12점을 보존처리하였다. 이 논문은 처리완료 된 12점의 도자기 중에서 백자장군(전주97)과 분청사기조화어문큰항아리(전주5630)에 대한 것으로 백자장군의 처리과정에서 수집된 정보을 분석하여 제작기법 및 용도를 조사하였으며, 파손범위가 넓은 분청사기조화어문큰항아리의 효과적인 처리과정에 대하여 소개한다.

• 기술사
• /
• 제10권3호
• /
• pp.8-16
• /
• 1977

The pbjective of this study to clarify the varietal resistance to green leaf-and planthopper and the evaluate the nature of the resistance to the insects in connection with the Antibiosis. this study was investigated the reaction of the varieties to insects with 46 rice varieties including recommended varieties of korea, At seedling stage they were in fested with second of third inster nymphs. the results were as follows. 1. Most of the rice vari eties tested showed highly susceptible reaction to Brown planthopper except Mudgo, KR 108-143- and HR529-41-3-2 as resistance, and Akamoch, Satominori, IR 24 and IR 8 asmoderately suscptible. 2. In the test of varietal resistance to white backed planthopper Mudgo, KR 108-243-1, KR 109-154-2 and HR 529-45-3-2 were resistance, and Suweon 82, Tongil, IR 8 palkeum, Iri 309, Hokwang and Chuhoku #31 were Moderatly susceptible. 3. Most of the varieties tested were observed highly resistance to green leafhopper, but Tongil, Suweon 82, IR 24, Milsung and Chuhoku #31 were Moderatly susceptible. 4. the new bred lines HR 108-243-1 are multiple resistance of Brown planthopper, green leafhopper and white babked planthopper, and some others showed moderatly susceptible as. IR 8: Brown planthopper, white backed planthopper. IR 24: Brown poanthopper, green leafhopper. Tongil: suweon #82, Chukoku #31, whist backed planthopper, Green leafhopper.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.301-301
• /
• 2017

Subspecific difference of the percentage of white immature kernels (WIK) between japonica and indica rice cultivars was analyzed in relation to ripening temperature and yield characters. Thirty-three Chinese and 10 Japanese rice cultivars, including 32 japonica and 11 indica, were cultivated with three different cropping seasons for three years. The results were as follows: (1) Indica had less number of panicles, larger number of spikelets per panicle with higher yield, and longer and narrower kernels than japonica. In japonica, Chinese cultivars had less number of panicles and larger number of spikelets per panicle than Japanese cultivars. In addition, WIK was significantly higher in Chinese cultivars than in Japanese cultivars, because of the higher percentage of milky white kernels, even at similar temperature conditions during ripening. On the other hand, WIK in indica was not significantly different between the production areas and between the cropping seasons. (2) Regardless of subspecies, WIK in a large number of Chinese cultivars increased with increasing temperature during ripening within 20 days after heading, while this relation was uncommon in Japanese cultivars, showing the low temperature response. However, some Chinese cultivars had the low WIK with the low temperature response. (3) WIK in japonicawas positively correlated with 1000-kernel weight, spikelet density, kernel width and thickness, but negatively correlated with panicle length and grain filling percentage, while in indica it was positively correlated with panicle number per area, grain filling percentage, brown rice yield and kernel width, but negatively correlated with kernel length. These results indicated that WIK in both subspecies had a close relation to kernel size, and that WIK was high in japonica cultivars with wide and thick kernels and in indica cultivars with short and wide kernels.

• Journal of Biosystems Engineering
• /
• 제22권3호
• /
• pp.295-302
• /
• 1997

An ultimate purpose of this study was to develop an automatic system for brown rice quality inspection using image processing technique. In this study emphasis was put on developing an algorithm for discriminating the brown rice kernels depending on their external quality with a color image processing system equipped with an adaptor magnifying the input image and optical fiber for oblique lightening. Primarily, geometical and optical features of images were analyzed with paddy and the various brown rice kernel samples such as a sound, cracked, peen-transparent, green-opaque, colored, white-opaque and brokens. Secondary, geometrical and optical parameters significant for identifying each rice kernels were screened by a statistical analysis(STEPWISE and DISCRIM procedure, SAS wer. 6) and an algorithm fur on- line discrimination of the rice kernels in static state were developed, and finally its performance was evaluated. The results are summarized as follows. 1) It was ascertained that the cracked kernels can be detected when e incident angle of the oblique light is less than 2$0^{\circ}C$ but detectivity was significantly affected by the angle between the direction of the oblique light and the longitudinal axis of the rice kernel and also by the location of the embryo with respect to the oblique light. 2) The most significant Parameters which can discriminate brown rice kernels are area, length and R, B and r values among the several geometrical and optical parameters. 3) Discrimination accuracies of the algorithm were ranged from 90% to 96% for a sound, cracked, colored, broken and unhulled, about 81 % for green-transparent and white-opaque and 75 % for green-opaque, respectively.

• 동아시아식생활학회지
• /
• 제14권2호
• /
• pp.135-144
• /
• 2004

A total of 40 Korean and Japanese rice varieties were evaluated for their main chemical components, physical properties, cooking quality, pasting properties, and instrumental measurements. Based on their quality evaluations, it was concluded that Korean and Japanese rice varieties were not significantly different in the basic components of NIR (Near Infra Red) data and the chemical analysis from the uncooked brown and milled rices. Korean rice had a little bit higher protein and amylose contents but much lower fat acidity than those of Japanese rice from the chemical analysis. From all the data of three different kinds of NIR methods, Korean and Japanese milled rice were very similar except the taste score. Japanese rice showed a slightly higher taste score, a little bit higher lightness and whiteness, but lower yellowness and redness than Korean one. From all those data of NIR and the chemical analysis, Korean and Japanese rices had very similar components except the fat content.

• 한국조리학회지
• /
• 제22권2호
• /
• pp.44-56
• /
• 2016

본 연구는 밀가루의 일정량을 당진 특산물인 해나루 쌀가루를 10%, 30%, 50% 대체하여 제조된 식빵의 품질 특성을 알아보고자 진행되었다. 발효율, pH, 부피, 비용적, TPA, 영상분석, 색도, 기호도 검사, 특성차이 검사를 통하여 해나루 쌀가루를 첨가한 식빵을 분석하였다. 발효율은 60분까지는 대조구가 가장 좋았으나, 그 이후부터는 HRF 50 시료를 제외한 나머지 시료 간의 차이는 나타나지 않았으며, 반죽과 식빵 모두 해나루 쌀가루의 첨가량이 높을수록 pH가 높아졌고, 쌀식빵의 부피와 비용적은 감소하였다. TPA와 영상분석 결과, 쌀가루 첨가량이 많을수록 경도와 기공의 조밀도는 증가하였으며, 기공의 찌그러짐은 감소하였고, 색도는 해나루 쌀가루 첨가량에 따라 b값이 낮아졌다. 관능검사 결과 조직감과 풍미, 전체적인 기호도에서 대조구가 가장 좋은 평가를 받았으나, 외관은 HRF 30, 맛은 HRF 10이 대조구보다 더 좋게 평가되었으며, 세 시료 간 유의적인 차이는 발견되지 않아 결과적으로 해나루 쌀가루를 30%까지 첨가하여도 밀가루 식빵과 소비자의 기호도에서 큰 차이는 나타나지 않을 것으로 사료되었다.

• 한국식품영양과학회지
• /
• 제42권9호
• /
• pp.1370-1377
• /
• 2013

쌀은 우리의 중요한 주식으로 대부분 취반과정을 통하여 호화시킨 형태로 섭취하는 것이 일반적이다. 따라서 본 연구에서는 백미, 현미, 발아현미 세 종류 쌀을 이용하여 총 폴리페놀 함량(TPC)과 항산화 활성(DPPH 라디칼 소거능, TRAP, ORAC assay) 및 항유전 독성을 분석하고 호화과정에 따른 생리활성의 변화를 살펴보고자 하였다. 총 페놀함량에서 현미와 발아현미는 호화 후 함량이 유의적으로 감소하였으나 백미는 유의적으로 증가하는 경향을 나타내었다. DPPH 라디칼 소거능의 $IC_{50}$값을 비교한 결과, 백미는 호화과정을 거친 후에는 최고 농도를 제외한 농도에서 활성이 나타나지 않아 $IC_{50}$값을 산출할 수 없었으며 발아현미의 경우 호화전 3.3 mg/mL에서 호화 후 4.2 mg/mL로 증가한 반면, 현미는 호화 전 3.5 mg/mL에서 호화 후 3.1 mg/mL로 증가하였다. 총 항산화능을 측정한 TRAP 분석에서는 호화 전 백미와 발아현미의 경우 $16.7{\mu}g/mL$에서부터 농도 의존적으로 수치가 증가하였으나, 현미의 경우 백미와 발아현미에 비해 낮은 TRAP 수치를 나타내었다. 호화 후 백미는 TRAP 수준이 낮아진 반면 현미와 발아현미의 TRAP 수준은 높아지는 것을 확인할 수 있었다. ORAC assay 결과 또한 세 가지 종류의 쌀을 비교하였을 때, 호화 전의 경우 백미가 $5.1{\pm}0.2{\mu}M$ TE로 가장 높았으나 호화 후 백미의 활성은 감소한 반면 현미와 발아현미는 증가하여 TRAP과 유사한 경향을 나타내었다. 산화적 스트레스에 의한 DNA 손상 억제 효과는 백미의 경우 호화 전과 후 모두 양성대조군과 유의적인 차이를 나타내지 않았다. 반면 현미와 발아현미의 경우 호화 전후에 상관없이 양성대조군에 비해 DNA 손상을 보호하는 효과를 나타내었으며 각 시료의 농도 간 유의적 차이는 없는 것으로 나타났다. 이상의 결과를 종합해보면, 호화과정을 거친 후 쌀을 섭취 시 백미보다 현미 또는 발아현미를 섭취하는 것이 건강에 더 유익할 것이라고 판단된다.

• 한국육종학회지
• /
• 제41권4호
• /
• pp.429-436
• /
• 2009

We conducted a QTL analysis of grain quality traits using 117 $BC_3F_4$ and $BC_3F_5$ lines developed from a cross between Ilpumbyeo and Moroberekan. Genotypes of 117 $BC_3F_5$ lines were determined using 134 simple sequence repeat (SSR) markers. A linkage map constructed using 134 SSR markers was employed to characterize quantitative trait loci (QTL). The 117 $BC_3F_4$ and $BC_3F_5$ lines were evaluated for eleven grain quality traits in 2005 and 2006. A total of 18 QTLs were identified for eleven traits, and the phenotypic variance explained by each QTL ranged from 9.9% to 35.2%. Moroberekan alleles contributed positive effects in the Ilpumbyeo background at two QTL loci for 1,000 grain weight. Four QTLs, two for chalky rice and one each for 1,000 grain weight and head rice were consistently detected in two consecutive years indicating that these QTLs are stable. Clusters of QTLs were observed in three chromosome regions. One cluster harboring five QTLs including head rice and brown rice ratio near SSR markers RM190 and RM314 was detected on chromosome 6. Another cluster harboring grain weight and white belly was detected on chromosome 2. Increase in white belly at this locus might be due to the increase in grain weight due to the presence of the Moroberekan allele. The Moroberekan alleles at two QTL loci, gw3 and gw4 associated with increased grain weight might be useful in breeding programs to develop high-yielding cultivars.