• 환경위생공학
• /
• 제13권3호
• /
• pp.113-120
• /
• 1998

For a microbial control of a plant pathogenic Pseudomonas syringae, Bacillus sp. strain BT182-3 was isolated. The strain BT182-3 had a growth inhibition against P. syringae not only on agar plate but also on cultured broth. After heat treatment at $40^{\cird}C$ and $80^{\cird}C$ for 30min, the lytic substance from the strain BT182-3 had about 52% remaining activity and 17% remaining activity, respectively. The optimal pH and temperature of the lytic substance was 6.0 and $28^{\cird}C$, respectively. Germination ratio of healthy radish seeds was 87% at $25^{\cird}C$ for 5 days in 0.8% saline, and that of the radish seeds infected with P. syringae was 67%, while that of the radish seeds treated with cultured broth of the strain BT182-3 was 90%. The 5-days healthy radish seedlings were 3.90cm at high and the seedlings infected with P. syringae were 3.06cm at high, while the seedlings treated with cultured broth of the strain BT182-3 were 4.30cm at high. The growth of the radish seedlings infected with P. syringae was inhibited after cultivation for 40days on pots, while the growth of the infected radish seedlings with P. syringae was recovered at stem length, root length and total weight at the same as the healthy seedlings after treatment of a lytic substance from the strain BT182-3.

• 한국작물학회지
• /
• 제36권4호
• /
• pp.305-309
• /
• 1991

종자순도 유지를 위한 기초자료로 활용코자 콤바인 수확시의 탈립종실이 익년 본답재배양식별 출현정도 및 생육특성을 정상재배벼와 비교검토 한 결과를 요약하면 다음과 같다. 1. 콤바인 수확시 품종별 탈립정도는 삼강벼가 49.5kg/10a로서 낙동벼의 27.8kg/10a보다 현저히 많았으나 탈립종자의 월동후 발아율은 오히려 낙동벼가 훨씬 높았다. 2. 이형주출현율 및 종자혼입율은 재배양식간에는 직파재배가 이앙재배보다, 그리고 품종별로는 일반형품종이 통일형품종보다 높은 경향이였다. 3. 이형주의 생육은 공시품종 모두 천립종을 제외한 간장, 주당수수, 수당입수 및 등숙율등 대부분의 형질들이 정상재배벼에 비하여 저하하는 경향이 었다.

• 한국식품저장유통학회:학술대회논문집
• /
• 한국식품저장유통학회 2003년도 제23차 추계총회 및 국제학술심포지움
• /
• pp.26-32
• /
• 2003

Rice is one of the most important cereals in the world. Japanese people use about 9 million tons of rice per you. We use rice for cooked rice as staple foods and for processing, such as rice wine (sake), rice crackers and miso fermentation, etc. Palatability, eating quality, of rice is evaluated by the sensory test and various kinds of physicochemical measurements. Japanese National Food Agency started the storage of 1.5 million tones of rice in 1996. We carried out the storage test using high quality rices since 1995 until 1996. As indices for the quality deteriorations of rice grains during the storage, germination ratio, enzyme activities, fat acidity, physical properties of cooked rice were clarified to be useful. We applied colorimetric method for the measurements of fat acidities in the place of titration method. Processing suitabilities of rice differ depending on the products. Low amylose rice is more suitable for soft rice crackers and high amylose rice is preferred more for rice noodle. Pre-cooked rice products, such as frozen cooked rice, retort-pouched rice and aseptic rice, are increasing recently in Japan. In addition to above-mentioned physico-chemical tests, NIR spectroscopy,“Midometer”and“Taste sensor”are novel and useful to evaluate eating quality and processing suitabolities. Recently, rice wholesalers and retailers have been obligated to display the name of cultivar, location of cultivation and the year of production of rice grains which they sell by the Japanese Agricultural Standard Law (JAS). In order to detect the dishonest labeling of rice cultivars, we developed new cultivar identification method based on DNA polymorphism.

• 생물환경조절학회지
• /
• 제4권2호
• /
• pp.131-135
• /
• 1995

겨울철 대부분의 시설재배 채소는 야간 온도가 떨어지기 매문에 많은 열 에너지를 공급함으로써 야온을 높여 생장시키기 때문에 에너지 손실이 많다. 본 실험은 수박의 경제적 출하를 목적으로 야온에 대한 생장 효과를 조사하였다. 낮의 온도를 $25^{\circ}C$와 3$0^{\circ}C$로 하고 야간의 온도는 2$0^{\circ}C$에서 3$0^{\circ}C$로 5$^{\circ}C$ 간격을 두고 처리하였다. 두 품종 수박(빛나, 감로) 모두 30/3$0^{\circ}C$ 처리에서 엽면적, 개화수 및 엽수가 가장 많았다. 30(14h)/25(10h) $^{\circ}C$과 30(12h)/25(12h) $^{\circ}C$ 처리구에서는 발아율 및 건중과 엽록소의 함량이 야온을 높인 30/3$0^{\circ}C$ 처리구 보다 높은 경향을 보였다. 25/$25^{\circ}C$와 30/2$0^{\circ}C$는 평균 온도가 같을지라도 수박의 생장에 있어서는 30/2$0^{\circ}C$ 처리구가 25/$25^{\circ}C$에 비하여 생장이 우수하였다. 빛나는 동일 조건에서 감로보다 생장이 우수하였다. 건중 엽면적율은 30/3$0^{\circ}C$와 30/2$0^{\circ}C$ 사이의 온도에서 DIF가 증가함에 따라 감소되었으나, 건중 엽중율은 증가되었다. 시설내 야온을 적절히 낮추어 재배하는 방법이 겨울철 에너지 소모 방지와 수박의 생장에 도움을 줄 것으로 기대된다.

• 한국식품영양학회지
• /
• 제28권3호
• /
• pp.499-506
• /
• 2015

The aim of this study was to investigate the changes in the taste components of cheonggukjang made with germinated soybeans, which is produced by the addition of a smoking process. The total organic acid content of smoked cheonggukjang made with germinated soybeans (SCGS) was four times higher than that of non-smoked cheonggukjang made with non-germinated soybeans (NCNS). The total organic acid content of SCGS was lower than that of non-smoked cheonggukjang made with germinated soybeans (NCGS). The total free sugar content of NCGS and SCGS was approximately three times higher than that of NCNS. The total free amino acid content of NCGS was significantly decreased compared with that of NCNS, whereas the total free amino acid content of SCGS was 1.2 times higher than that of NCGS. The essential amino acid content of SCGS was significantly increased compared with that of NCGS. The ratio of glutamic acid to the total free amino acid in NCNS and SCGS was 19.6%. Similarly, the ratio of glutamic acid to the total free amino acid in NCGS was 19.1%. There were no significant differences in the total fatty acid content of NCNS, NCGS, and SCGS. The sensory evaluation of appearance, aroma, taste, and overall quality of SCGS was significantly increased compared with that of NCNS and NCGS. These results suggest that smoked cheonggukjang made with germinated soybeans could be utilized for the development of a novel fermented food.

• 농업과학연구
• /
• 제34권2호
• /
• pp.181-188
• /
• 2007

This study was conducted to estimate the humificating grade according to experiment of physico-chemical characterization and phyto-toxicity during composting of using with pig manure and castor meal. The material ratios of the compost which was mixed with pig manure(P), castor meal(C), and saw dust(S) were 5 : 1 : 4(PCS-I), 5 : 2.5 : 2.5(PCS-II) and 5 : 4 : 1(PCS-III) by volume to volume, and they were decomposed for 60 days. In the result, the changes of temperature in all treatments during composting were rapidly increased more than $68^{\circ}C$ at the incipient stage, and gradually decreased within $39^{\circ}C$ at 60 days the after treatment. pH was slowly increased from 7.5 to 7.7, and the C/N ratio was 13~14 at the final composting stage. The low C/N ratio value in this compost was caused by the castor meal contented high nitrogen level(T-N 5.7 %). G.I.(germination index) was showed 73 to 78 range in all treatments at the $60^{th}$ day. Among all treatments PCS-I was appeared to be the best condition for composting.

• 한국작물학회지
• /
• 제37권3호
• /
• pp.283-287
• /
• 1992

작약의 번식방법과 작약근 / 목단접수의 유효성분을 비교 조사한 결과를 요약하면 다음과 같다. 1. 작약실생묘 파종적기는 수확후 같은해 8월20일에서 9월10일에 파종하는 것이 발아율이 양호하였다. 2. 분주법은 춘식보다 추식이 작약의 생육에 유리하였다. 3. 삽목법은 개화중에 실시하는 것이 발근율이 양호하였고, 생장조정제는 무처리관행 대비보다 Ruton 처리가 발근율이 21% 증가하였으나 정아출현이 되지 않았다. 4. 작약근 / 목단접수의 접목시기는 9월이 적기이고, 작약근 / 목단접수에서 뿌리 생산성도 가장 우수하였다. 5. 작약 유효성분은 paeoniflorin 성분이 가장 많았고, 목단은 paeonol 성분이 많았으며, 작약근 / 목단접수의 paeoniflorin 성분은 작약보다 75.9% 높았으며, 기타 유효성분 또한 작약근과 비슷한 경향이었다.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.31-31
• /
• 2017

Understanding the mechanism(s) to overcome or prevent seed ageing deterioration during storage is of fundamental interest to seed physiologists. Vitamin E (tocols) is known as a key metabolite to efficiently scavenge lipid peroxy radicals which cause membrane breakdown resulting in seed ageing. However, in rice research this hypothesis has been tested for very few lines only without considering intraspecific variation in genomic structure. Here, we present a correlation study between tocols and seed longevity using a diverse rice panel. Seeds of 20 rice accessions held in the International Rice Genebank at the International Rice Research Institute, representing aus, indica, temperate japonica and tropical japonica subpopulations, were used for tocols analysis (quantification of ${\alpha}$-, ${\beta}$-, ${\gamma}$-, ${\delta}$-tocopherol/tocotrienol by ultra performance liquid chromatography) and storage experiments at $45^{\circ}C$ and 10.9% seed moisture content (sample taken for germination testing every 3 days up to 60 days). To examine interactions between DNA sequences and phenotype, the 700k high-density single-nucleotide polymorphism marker data-set was utilized. Both seed longevity (time for viability to fall to 50%; $p_{50}$) and tocols content varied across subpopulations due to heterogeneity in the genetic architecture. Among eight types of tocol homologues, ${\alpha}$-tocopherol and ${\gamma}$-tocotrienol were significantly correlated with $p_{50}$ (negatively and positively, respectively). While temperate japonica varieties were most abundant in ${\alpha}$-tocopherol, indica varieties recorded 1.3 to 1.7-fold higher ${\gamma}$-tocotrienol than those of other subpopulations. It was highlighted that specific ratio of tocol homologues rather than total tocols content plays an important role in the seed longevity mechanism.

• Applied Biological Chemistry
• /
• 제24권1호
• /
• pp.67-73
• /
• 1981

보리와 발아보리의 생체내 영양효율을 알기위해 동물실험을 행하였다. 젖뗀 albino rat를 사용하여 단백질원으로 보리 및 발아보리만을 사용한 군, 단백질(5%의 casein)을 첨가해준, 그리고 쌀(쌀:보리=8:2) 및 단백질(5% casein)을 혼합 첨가시킨군으로 나누어 4주간 사육하여 다음과 같은 결과를 얻었다. 1. 식이 및 열량섭취량, 식이의 효율 및 체중은 보리 및 발아보리에 단백질을 첨가시킨군들에서 높았으며 쌀과 단백질을 첨가시킨군들에서는 현저히 높아 통계적으로 유의성을 보였다. 그러나 보리군들과 발아 보리군들간의 차이는 볼 수 없었다. 2. 단백질의 효율은 단일 곡류군들과 단백질 첨가군들에 비해 쌀과 단백질 혼합첨가군들이 높음을 보여 흔합된 곡류단백질이 체내효율을 높이는 것으로 나타났다. 3. 식이 및 단백질의 소화흡수율을 보면, 단일곡류군들에서는 표준군에 비해 보리군 및 발아보리군들이 낮음을 보였다. 그러나 여기에 단백질 또는 쌀과 단백질을 혼합 첨가하였을 경우 보리군들에 비해 발아보리군들의 단백질 소화흡수율이 현저히 증가하였다. 따라서 발아보리의 영양효과는 발아보리와 함께 동물성단백질을 적당히 섭취할 경우 단백질의 소화흡수율을 크게 증가 시키는데 있다고 할 수 있다.

• 한국식품과학회지
• /
• 제32권3호
• /
• pp.584-589
• /
• 2000

항균물질을 사용하여 나물콩을 침지처리함으로써 콩나물 부패를 억제할 수 있는 침지조건을 검토하였다. 적정 침지시간은 20분이었으며 citric acid, chitosan 등의 효과가 우수하였다. 대부분의 처리구에서 대조구에 비해 발아율 감소가 일어나지 않은 반면 상당한 부패율 감소가 나타났으며, 특히 GFSE, chitosan, 인산용액의 침지 효과가 켰다. Ethanol 침지처리를 제외한 처리구가 대조구에 비해 중량 및 수율중가의 효과를 나타내었으며, 특히 chitosan 처리구는 대조구에 비해 수율 67%, 개체중량 6.9% 및 전체길이 9.5%의 중가가 나타나 그 효과가 월둥하였다. 침지처리에 의해 나물콩에 부착된 미생물의 수를 감소시킴으로써 재배중 콩나물의 부패를 감소시킬 수 있었다.