• Korean Chemical Engineering Research
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• 제48권6호
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• pp.690-694
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• 2010

본 연구에서는 대나무, 계피, 생강 등 8종의 한약재를 포함한 한방목초액의 소재특성을 시험하여 화장품 및 피부질 환용 의약품에의 응용가능성을 조사하였다. 목초액의 항산화력은 DPPH 자유라디칼 소거법으로 측정되었으며 $50{\mu}g/ml$의 농축목초액 농도에서 97%의 매우 높은 항산화능을 보여주었다. 목초액의 항균력은 원판확산법으로 시험되었으며, 피부상재균인 Staphylococcus aureus에 대해 우수한 항균력을 보여주었다. 목초액의 미백효과는 tyrosinase 활성억제시험법으로 측정되었으며 대조군인 비타민 C에 비해 매우 낮아서 미백효과는 미미하였다. 목초액의 안전성 시험은 MTT assay에 의해 측정되었으며, 세포 독성이 비교적 높은 것으로 나타났다. 목초액의 화장품소재 안정성 시험 결과 색, 향, 외관 및 pH에서 큰 변화가 없어서 매우 안정하였다. 무모생쥐를 이용한 항 아토피 시험결과, 목초액은 DNCB에 의해 유도된 피부염증을 9일 째 거의 정상상태로 회복시켰으며, 피부내 IgE의 농도도 대조군에 비해 30% 감소시켜 항 아토피 효과가 우수한 것으로 나타났다. 따라서 목초액은 항산화력, 항균력 및 항 아토피 효과가 우수하여 화장품소재나 피부질환치료제로서의 응용 가능성이 큼을 알 수 있었다.

• 공업화학
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• 제18권4호
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• pp.396-399
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• 2007

본 연구에서는 질산은 용액을 감마선 조사에 의하여 은나노 입자를 제조한 후, 이것을 활성탄과 혼합하여 은/활성탄 복합체를 제조하여 대장균에 대한 항균특성을 조사하였다. 제조된 은/활성탄 복합체의 특성은 주사전자현미경, X-선 회절법 그리고 원자흡수분광법에 의해 알아보았다. 은/활성탄 복합체의 대장균에 대한 억제농도는 0.387 ppm으로 나타났으며 대장균에 대한 사멸농도는 1.017 ppm이었다. 이 결과로 은/활성탄 복합체의 대장균에 대한 우수한 항균효과를 확인할 수 있었다.

• 한국어병학회지
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• 제8권2호
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• pp.149-156
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• 1995

파래투여에 따른 생리활성에 미치는 영향을 조사하기 위하여 이스라엘잉어에 대상으로 공기노출에 따른 혈액성상의 변화를 조사하였고 아울러서 비단잉어를 대상으로 A. sobriae에 대한 항균력과 항응집소가를 조사하였던 바 그 결과는 다음과 같다. 이스라엘잉어를 대상으로 4개월간 파래첨가사육후에 공기노출에 따른 혈액성상에 미치는 영향에 있어서 Ht치는 파래첨가의 유무에 관계없이 큰 차이를 보이지 않았으며, 헤모글로빈, 총단백, 알부민 및 글루코스치는 대조군에 비해 첨가군에서 증가되는 경향을 보였으며, 특히 5% 첨가군에서 높게 나타났다. 그렇지만, GPT 및 GOT치는 대조군에 비해 파래 첨가농도에 비례하여 감소하는 경향을 보였다. 한편, 비단잉어를 대상으로 파래추출물을 1주간 복강내로 투여후 A. sobriae에 대한 항균능은 대조군에 비해서 첨가군 모두에서 낮게 나타났으며, 특히 $30{\mu}g/g$ 투여군에서 $4{\times}10^4$ CFU로 최저치를 나타냈다. 한편, 항응집소가는 대조군에 비해 파래추출물 투여군 모두에서 증가되었으며, 특히 $30{\mu}g/g$ 투여군에서 $6.0{\pm}1.1$로서 최고치를 보였다.

• 대한약침학회지
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• 제12권3호
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• pp.73-79
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• 2009

Objectives : This study was performed to investigate the anti-inflammatory and anti-oxidantic effects of GaeYongHwan(GYH) extract which has been used for patients with acnes. Methods : Anti-inflammatory and anti-oxidantic effects of GYH extract were tested in terms of inhibitory ability of Nitric oxide(NO) production, 1,1-diphenyl-2-picrylhydrazyl(DPPH) radical scavenging activity and anti-bacterial effects against Propionibacterium acnes(P. acnes). Results : 1. All GYH treated groups did not show cytotoxicity. 2. Treatment with $100{\mu}g/m{\ell}$ of GYH extract lowered production levels of NO significantly compared to non-treated control or normal. 3. All of GYH treated groups did not show DPPH free radical scavenging activities. 4. All of GYH treated groups did not show anti-baterial action against P. acnes. Conclusions : These results imply that GYH extract has anti-inflammatory effect to treat acnes.

• 대한한의학회지
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• 제42권4호
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• pp.25-39
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• 2021

Objectives: Ssanghwa-tang (SHT) is a traditional herbal formula comprising nine medicinal herbs, and it is used for reducing fatigue in Korea. SHT exerts various effects such as anti-inflammatory, antioxidant, and anti-aging activities, and protection against acute hepatotoxicity. However, the genotoxicity of SHT has not yet been established. Methods: Ten components were identified in SHT water extract by using high-performance liquid chromatography analysis. We assessed the genotoxicity of SHT by using bacterial reverse mutation (Ames test), chromosome aberration, and in vivo micronucleus tests. Results: The contents of paeoniflorin, glycyrrhizin, and liquiritin apioside in SHT were 15.57, 6.94, and 3.48 mg/g extract, respectively. SHT did not increase the revertant colonies of Salmonella typhimurium and Escherichia coli strains in the presence or absence of metabolic activity. Although SHT did not induce structurally abnormal chromosomes in Chinese hamster lung (CHL) cells in the presence of metabolic activity, the number of structurally aberrated chromosomes increased dose-dependently in the absence of metabolic activity. In the in vivo micronucleus test, SHT did not affect the formation of micronuclei compared with the vehicle control. Conclusions: Genotoxicity of SHT was not observed in the Ames test and in vivo micronucleus test. However, based on the results of chromosome aberration test, it can be presumed that SHT has the potential to induce genotoxicity because it induced structurally abnormal chromosomes in the absence of metabolic activity.

• 한국식생활문화학회지
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• 제34권5호
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• pp.645-650
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• 2019

Skin plays important roles in protecting the internal organs from the chemical-biological risk factors and ultraviolet light. Exposure to the chemical and biological stimuli has a detrimental effect on skin's structure and physiological regulation. Therefore, much attention has been paid to natural products that show biological activities such as anti-oxidation, anti-aging and anti-bacterial activities. In this study, we investigated the skin-related biological activities of Oenothera lamarckiana aerial part extract. The extract contained 229.35 mg TAE (tannic acid equivalents)/g total polyphenolic compounds and the extract showed relative high antioxidant activity ($SC_{50}$ value: $8.52{\mu}g/mL$). The $IC_{50}$ value against tyrosinase and elastase were 307.94 and $181.51{\mu}g/mL$, respectively. This suggested that O. lamarckiana can be applied to whiten skin and slow the aging of skin. O. lamarckiana extract showed a growth inhibitory effect on Staphylococcu epidermidis (minimum inhibitory concentration: $250{\mu}g/mL$). Interestingly, O. lamarckiana extract showed no inhibitory effect on Pseudomonas aeruginosa on the paper disc assay. Yet the extract inhibited the growth of Pseudomonas aeruginosa on the broth dilution assay in a dose-dependent manners. Taken together, O. lamarckiana could have good potential for development as an additive in the cosmetic industry.

• 대한본초학회지
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• 제27권2호
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• pp.43-46
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• 2012

Objectives : Sanguisorbae Radix(SO) is a plant in the family Rosaceae, which grows widely in open fields Korea. It has been used as traditional medicine for thousands of years, as a treatment for anti-inflammatory and it is widely used for throat infection, tonsilitis, conjuctivitis and lymphadentis. In this study, investigated skin antiaging and anti-bacterial by using SO fractions water, acetone and butanol, chloroform. Methods : The effects of anti-microbial on SO fractions and elastase inhibition activity, collagenase inhibition activity were experimented. Results : 1. The ethyl acetate fraction showed the strongest antimicrobial activity against Staphylococcus epidermidis. 2. The elastase inhibition rate and collagenase inhibition rate of the water fraction of SO was the highest other factions. Conclusions : From the above results, it was confirmed the SO has sufficient potentiality applying itself to industry and also SO can be utilized as antimicrobial natural materials and antiaging cosmetics.

• The Plant Pathology Journal
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• 제35권5호
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• pp.473-485
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• 2019

Kiwifruit (Actinidia spp.) is an economically important crop and a bacterial canker disease, caused by Pseudomonas syringae pv. actinidiae (Psa), is the most destructive disease in kiwifruit production. Therefore, prevent and control of the disease is a critical issue in kiwifruit industry worldwide. Unfortunately, there is no reliable control methods have been developed. Recently, interest in disease control using microbial agents is growing. However, kiwifruit microbiota and their roles in the disease control is mainly remaining unknown. In this study, we secured bacterial libraries from kiwifruit ecospheres (rhizosphere, endospere, and phyllosphere) and screened reliable biocontrol strains against Psa. As the results, Streptomyces racemochromogenes W1SF4, Streptomyces sp. W3SF9 and S. parvulus KPB2 were selected as anti-Psa agents from the libraries. The strains showed forcible antibacterial activity as well as exceptional colonization ability on rhizosphere or phyllosphere of kiwifruit. Genome analyses of the strains suggested that the strains may produce several anti-Psa secondary metabolites. Our results will contribute to develop biocontrol strains against the kiwifruit canker pathogen and the disease management strategies.

• Journal of Microbiology and Biotechnology
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• 제28권5호
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• pp.707-717
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• 2018

Leukocytes are reportedly the first line of the innate immune defense and essential for the control of common bacterial infections. Therefore, in this work, the antibacterial activity of crocodile leukocyte extract against Propionibacterium acnes was evaluated, and we also characterized the related activity of skin infection. The leukocyte extract showed the minimum inhibitory concentration to be $100{\mu}g/ml$ to P. acnes. SEM imaging demonstrated that the leukocyte extract adversely affected P. acnes cell permeability in a concentration-dependent manner. Furthermore, the crocodile leukocyte extract could significantly reduce proinflammatory markers and decrease inflammatory signs in infected mouse ears. The crude leukocyte extract was further purified using FPLC and RP-HPLC. The resulting fraction F5 was indicated as the anti-acne peptide-containing fraction. The molecular mass of the peptide contained in F5 was calculated to be 4,790.5 Da. N-Terminal sequencing revealed the amino acid sequence as GPEPVPAIYQ, which displays similarities to immunoglobulin A and leucine-rich repeat neuronal protein. This is the first reported amino acid sequence of a crocodile leukocyte extract that possesses anti-acne activity. To attempt to use it in a prototype cosmetic, an anti-acne gel containing crude crocodile leukocyte extract was formulated, resulting in seven gel formulations (G1, G2, G3, G4, G5, G6, and G7). The formulations G5, G6, and G7 exhibited 2-fold higher anti-acne activity than G1-G4. Investigation of accelerating stability studies of anti-acne gel formulations G5, G6, and G7 demonstrated that a low storage temperature ($4^{\circ}C$) is suitable for maintaining the physical properties and biological activity of the anti-acne gel products.

• 대한화학회지
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• 제57권2호
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• pp.234-240
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• 2013

The synthesis of title compounds were accomplished by synthetic sequence shown in Scheme 1. Chalcones on cyclocondensation with thiourea in ethanol and potassium hydroxide under reflux yielded the respective dihydropyramidin-2(1H)-thiones. Each of the dihydropyrimidin thiones was, then subjected to the Mannich condensation in alkaline medium using three different secondary amines, viz., dimethylamine, diethylamine and morpholine to obtain a new series of S-Mannich bases. All the synthesised compounds ($C_1-C_{15}$) were evaluated for their antiulcer and antibacterial activities. Compounds $C_4$, $C_5$, $C_6$, $C_{14}$ and $C_{15}$ exhibited relatively more potent antiulcer activity but not comparable to the standard; Omeprazole, while $C_1$, $C_2$, $C_3$ and $C_{13}$ were moderate in activity at 100 mg/kg p.o. All the compounds ($C_1-C_{15}$) showed mild to moderate activity against both Gram-positive (S.aureus, L.delbrueckii) and Gram-negative (P.vulgaris, E.coli) bacteria. Amongst the compounds tested, only $C_6$, $C_9$, $C_{12}$ and $C_{15}$ were found to be potent.