• Bulletin of the Korean Chemical Society
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• 제30권8호
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• pp.1891-1892
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• 2009

• Bulletin of the Korean Chemical Society
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• 제25권9호
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• pp.1297-1298
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• 2004

• 한국식품영양과학회지
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• 제27권3호
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• pp.433-440
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• 1998

In order to select probiotics with a high survival rate in gut and the growth inhibition of virulent pathogens to human beings or animals, we have examined a variety of microorganisms to assess the acid, bile, and pancreatic tolerance and the growth inhibition of E. colt O8 and Salmonella choleraesuis ATCC 8391. Lactobacillus acidophilus KCTC 3155 was shown to inhibit the growth of E. coli and Salmonella dramatically within 24 h of incubation, although it was vulnerable to the exposure of bile acids. Bacillus polyfermenticus showed a good growth inhibition against E. coli, with a moderate acid and bile tolerance, while Clostridium butyricum KCTC 1786 inhibited the growth of E. coli and Salmonella slightly with a good bile tolerance. However, Saccharomyces cerevisiae KCTC 7928 and Aspergillus oryzae KCTC 6075 did not inhibit the growth of E. coli and Salmonella, suggesting that these microorganisms can be used as the sources of nutritional suppliment rather than as probiotics itself.

• 대한한의학방제학회지
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• 제9권1호
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• pp.367-374
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• 2001

쇠비름 추출물의 농도가 1%정도부터 Escherichia coli KCTC 2441의 성장 억제 효과가 나타났으며 7%일 때 균의 성장이 급속도로 억제되었다. 즉 쇠비름 추출물이 Escherichia coli KCTC 2441에 대하여 항균작용을 나타내고 있음이 증명되었다. 6월에 양지 바른 곳에서 자란 쇠비름이 대장균 성장 억제 효과가 높았으며 잎보다는 줄기 부분이 잎 중에서도 적자주색을 띠는 잎이 대장균 성장 억제 효과가 높았다.

• 생물환경조절학회지
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• 제21권2호
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• pp.134-139
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• 2012

친환경 유기농자재를 이용하여 잿빛곰팡이병균의 포자 발아, 균사생장 억제효과를 기내에서 조사하였다. 그 결과 잿빛곰팡이병의 균사생장 억제 효과는 Bacillus subtilis를 주성분으로 하는 제제가 100%의 억제효과를 보였으며, 그 외의 제제는 20% 이하의 범위에서 억제효과를 나타내었다. 포자발아 억제효과는 유기황 수화제 2종('BTB', '황스타')이 각각 97.7%, 92.3%으로 나타났다. 균사생장 억제와 포자 발아억제에 모두 효과를 보이는 제제는 없었다. 따라서 잿빛곰팡이병 방제를 위해서는 포자발아 억제를 위한 방제와 균사생장억제를 위한 제제를 각각 처리하여야 할 것으로 사료되었다. 아울러 사물 기생성을 가진 잿빛곰팡이병의 방제를 위해서는 잔재물에서 생장을 막는 것이 중요하며 이를 위해 예방을 전제로 한 방제의 경우 유기황을 주성분으로 하는 제제가 적용 가능할 것으로 생각된다.

• 한국환경과학회지
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• 제12권11호
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• pp.1189-1196
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• 2003

The effect of boron and aluminum on the development of adventitious roots was studied in sunflower cuttings. Three-day-old seedlings were de-rooted and grown in nutrient solutions with or without boron and supplemented with different concentrations (from 50 to 700 ${\mu}$M) of aluminum. The number and length of the adventitious roots and proline content in adventitious roots in response to insufficient boron and aluminum stress were determined periodically. The micronutrient boron caused the development of numerous roots in the lower parts of the hypocotyl. A dose-response of boron-induced rooting yielded an optimum concentration of 0.1 mM boron. In the absence of boron, in the majority of the adventitious roots, a significant inhibition was observed with or without aluminum, indicating that the most apparent symptom of boron deficiency is the cessation of root growth. Increasing concentrations of aluminum caused progressive inhibition of growth and rooting of the hypocotyls, and a parallel increase in proline levels of adventitious roots. Supplemental boron ameliorated the inhibitory effect of aluminum, suggesting that aluminum could inhibit root growth by inducing boron deficiency. Ascorbate added to medium in the absence of boron improved root growth and induced a significant decrease in proline levels. These findings suggest that adventitious root growth inhibition resulting from either boron deficiency or aluminum toxicity may be a result of impaired ascorbate metabolism.

• 한방안이비인후피부과학회지
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• 제15권1호
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• pp.96-126
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• 2002

In the course of screening natural extracts for hair growth, we found that the extract of dried root of Sophora flavescens has the prominent hair growth promoting effect. After topical application of Sophora flavescens extract to the back of C57BL/6 mice, the earlier conversion of telogen-to-anagen phase was induced. In addition, the Sophora flavescens extract revealed to possess potent inhibitory effect on $5{\alpha}$-reductase Ⅰ and Ⅱ activity. The growth of dermal papilla cells and mouse vibrissae hair follicle cultured in vitro, however, was not affected by Sophora flavescens extract treatment. RT-PCR analysis showed that Sophora flavescens extract induced mRNA levels of growth factors such as insulin-like growth factor-Ⅰ and keratinocyte growth factor in dermal papilla cells, suggesting hair growth promoting effect of Sophora flavescens extract is mediated through inhibition of $5{\alpha}$-reductase type Ⅱ activity and the regulation of growth factors in dermal papilla cells. Furthermore, Sophora flavescens extract also showed anti-bacterial effect on Propionibacterium acnes. These results suggest that Sophora flavescens can be used as a potent treatment agent for helping hair growth stimulation and acne inhibition.

• 아시안잔디학회지
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• 제7권2_3호
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• pp.81-94
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• 1993

This study was conducted to investigate the influence of herbicides, simazine, pendimethalin, propyzamide and asulam on the growth of Zoysia matrella when they are treated at different growth stages of the plant. The reaction of Zoysia matrella to herbicides differed depending on kinds of herbicides, their concentcations, and time of treatment. Simazine at the higher concentration of 600g /l0a exhibited inhibitory effect on leaf dry matter and growth of runner when treated on April 5, 1991. The highest inhibition of leaf and runner was observed in the plot applied on May 23, 1990. The sprouting and growth of Zoysia matrella was not affected by all the concentrations of the herbicides applied on October 23,1991. Pendimethalin did not influence the growth of Zoysia matrella at he treatment of April 5. However, at the treatment of May 23, the number and growth of runner was inhibited although the plant height and leaf dry matter was not affected. When pendimethalin was treated on October 23, the growth of runner was very slightly reduced in the next year. In case of propyzamide, there was no inhibitory effect on the growth of Zoysia matrella regardless of treatment of times, methods, and dosages. Greater inhibition in the growth of Zoysia matrella was observed at higher dosage(1,ll0g /l0a)-treated plot on April 5 and all the concentrations treated on May 23. But, no inhibition was observed on the October 23 treatment.

• 한국환경과학회지
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• 제1권2호
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• pp.145-155
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• 1992

The effect of various supplies of lead singly and in combination with aluminium on growth and chlorophyll biosynthesis was investigated in 7-day-old Vigna anguluris seedlings. Expose to 50 $\mu$N Pb or more drastically reduced root elongation rate. Significant depressions in root growth was observed within 1 day and no recovery of growth was seen over the duration of treatment period. Root elongation decreased depending on the Pb concentrations. Root growth inhibition was stronger than shoot growth inhibition. The initiation of lateral roots appeared to be more sensitive to Pb than the growth of main roots. Inhibition of root and shoot elongation by Pb was lessened by combined exposure of Pb and Al, suggesting that the presence of AA reverse the inhibitory effect of Pb alone. With the histochemical sodium rhodizonate method the rate of Pb uptake was dependent on the Pb concentration and exposure time of the roots to Pb salts. Pb was first deposited on the root surface and then translocated radially in the root cap cells. During a longer Pb administration (up to 72 h) Pb penetration was nonuniform, with accumulation within the cortex or endodermis. There was drastic reduction in chlorophyll content by Pb. The Pb inhibition of chlorophyll synthesis was concentration dependent. 5-Aminolevulinic acid dehydratase (ALAD) activity exhibited distinct inhibition from control. Reduction in chlorophyll content was accompanied by proportional changes in ALAD activity. Chlorophyll content and ALAD activity were less affected by combined exposure of Pb and Al, suggesting that Al has a protective effect against the inhibiting action of Pb on photosynthetic activity.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• 제1권2호
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• pp.145-155
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• 1997

The effect of various supplies of lead singly and in combination with aluminium on growth and chlorophyll biosynthesis was investigated in 7-day-old Vigna angularis seedlings. Expose to 50 uM Pb or more drastically reduced root elongation rate. Significant depressions in root growth was observed within 1 day and no recovery of growth was seen over the duration of treatment period. Root elongation decreased depending on the Pb concentrations. Root growth inhibition was stronger than shoot growth inhibition. The initiation of lateral roots appeared to be more sensitive to Pb than the growth of main roots. Inhibition of root and shoot elongation by Pb was lessened by combined exposure of Pb and Al, suggesting that the presence of Al reverse the inhibitory effect of Pb alone. With the histochemical sodium rhodizonate method the rate of Pb uptake was dependent on the Pb concentration and exposure time of the roots to Pb salts. Pb was first deposited on the root surface and then translocated radially in the root cap cells. During a longer Pb administration (up to 72 h) Pb penetration was nonuniform, with accumulation within the cortex or endodermis. There was drastic reduction in chlorophyll content by Pb. The Pb inhibition of chlorophyll synthesis was concentration dependent. $\delta-Aminolevulinic$ acid dehydratase (ALAD) activity exhibited distinct inhibition from control. Reduction in chlorophyll content was accompanied by proportional changes in ALAD activity. Chlorophyll content and ALAD activity were less affected by combined exposure of Pb and Al, suggesting that Al has a protective effect against the inhibiting action of Pb on photosynthetic activity.