• Journal of Microbiology and Biotechnology
• /
• 제11권6호
• /
• pp.1120-1123
• /
• 2001

Screening tests against six plant pathogenic fungi were performed in order to develop biopesticides. Actinomycetes were used to discriminate Bacillus thuringiensis for wide use as a microbial pesticide. From more than 100 actinomycetes tested, twelve strains showed potent antifungal activities. We report in vivo screening results from fermentation broths of these twelve strains and identification of the strain taxa.

• 대한약학회:학술대회논문집
• /
• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
• /
• pp.336.2-336.2
• /
• 2002

Several 1 A-naphthoquinone derivatives have been reported to possess many pharmacological effects such as anti-viral. anti-fungal. anti-cancer and anti-platelet activities. We have reported that 2-chloro-3-［4-(ethyICarbOxy)-phenyl］-amino-1.4-naphthoquinone(NQ12) had a potent inhibitory effect on the platelet aggregation in vitro and thrombosis in vivo. However. little has been known about functional roleot NQ12 on vascular smooth muscle cells (VSMCs). (omitted)

• 한국버섯학회지
• /
• 제12권2호
• /
• pp.77-81
• /
• 2014

Mushrooms are considered not only as food but also for source of physiologically beneficial medicines. The culinary-medicinal mushrooms may important role in the prevention of age-associated neurological dysfunctions, including Alzheimer's and Parkinson's diseases. Hericium erinaceus (H. erinaceus), is edible mushrooms, is a parasitic fungus that grows hanging off of logs and trees and well established candidate for brain and nerve health. H. erinaceus contains high amounts of antioxidants, beta-glucan, polysaccharides and a potent catalyst for brain tissue regeneration and helps to improve memory and cognitive functions. Its fruiting bodies and the fungal mycelia exhibit various pharmacological activities, including the enhancement of the immune system, antitumor, hypoglycemic and anti-aging properties. H. erinaceus stimulates the synthesis of Nerve Growth Factor (NGF) which is the primary protein nutrient responsible for enhancing and repairing neurological disorders. Especially hericenones and erinacines isolated from its fruitin body stimulate NGF, synthesis. This fungus is also utilized to regulate blood levels of glucose, triglycerides and cholesterol. H. erinaceus can be considered as useful therapeutic agents in the management and/or treatment of neurodegeneration diseases. However, this review focuses on in vitro, in vivo and clinical trials for neurodegerative disease.

• 대한화장품학회:학술대회논문집
• /
• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
• /
• pp.35-49
• /
• 2003

In this study, in an attempt to search for functional cosmetic ingredients from higher fungal, we have produced exopolysaccharides (GF-l, approximately carbohydrate 75％, protein 25％) and polysaccharide (GF-2) of mycelium extract, by submerged culture of Grifolafrondosa. For applications in anti-aging cosmetic field, we investigated the diverse biological activities. Antioxidant activity and inhibition of Matrixmetalloproteinases (MMPs) were investigated enzymatic assays by measuring the superoxide scavenging activity using xanthine-xanthine oxidase system and the proteolytic activity of MMPs using EnzChek Collagenase/Gelatinase kits, respectively. GF-l polysacchairde showed inhibition of superoxide radical by 90％ at a concentration of 0.2％ (w/v) and inhibition of collagenase by 45％ at 0.2％ (w/v). GF-2 polysaccharide of mycelium extract also exhibited good antioxidant activity. However, MMPs inhibition activity was relatively lower level compared to GF-l polysaccharides. The treatment of human dermal fibroblast (HDF) with GF-l and GF-2 polysaccharides increased the proliferation of fibroblast by approximately 23-25％ at a concentration of 0.5％ (w/v), also showed collagen synthesis increase in HDF by about 50％ at 0.5％ (w/v) compared to that of untreated control. We also report the moisturizing effects of polysaccharides in cosmetic products (O/W emulation) and its own ingredient, in vitro and in vivo. The GF-1 polysaccharide showed higher moisturizing ability than sodium hyaluronate, which is the most commonly used moisturizers ingredient. These results suggest the GF-l polysaccharide, protein-bound polysaccharide, may be used as an ingredient for new moisturizing and anti-aging cosmeceuticals.

• 한국환경농학회지
• /
• 제31권1호
• /
• pp.60-67
• /
• 2012

옻나무 주성분인 조추출액의 고추 탄저병균에 대한 항진균활성을 조사한 결과 1.0 mg urushiol/mL PDA 농도에서 18.3-39.5%의 억제효과가 있었으며, 푸른 고추에 병원성이 강한 것으로 조사된 GC계열의 균주보다는 DC계열의 균주에 대한 효과가 높았다. Urushiol의 농도가 1.0 mg/mL 일 경우 약 70% 정도의 포자가 발아한 PDB 용액에서보다 공시 모든 균주의 포자발아는 50% 이상 억제되었다. 동일한 농도에서 균사생장억제 효과 보다는 포자발아에 대한 억제 효과가 다소 높은 경향을 보였다. 푸른 고추와 붉은 고추에 옻 추출액을 처리하고 공시 탄저병균을 접종한 후 병 발생 억제효과를 in vitro에서 검정한 결과 붉은 고추에 DC 균주를 접종하였을 경우 1.0 mg/mL 농도 처리에서는 75.0%, 0.1 mg/mL 농도 처리에서는 58.0% 로 나타났으며, 푸른고추에 병원성이 강한 GC 균주를 접종하였을 경우에는 각각 68.1% 및 28.3% 탄저병 발생이 억제되었다. 비닐하우스에서 관행재배방법에 의해 고추를 재배하면서 고추 탄저병이 자연발생하기 시작한 8월 21부터 옻 추출액을 1주일 간격으로 3회 살포하고 최종 살포일 7일 후에 전체 고추 열매 중 이병 열매를 조사하여 옻 추출액의 병 발생 억제정도를 구한 결과 1차 조사한 9월 11일에는 무처리 대조구에 비해 옻 조 추출액을 1.0 mg/mL 처리한 시험구에서는 85.0% 탄저병 발생 억제효과를 보였으나, 0.01 mg/mL 처리구에서는 9.8%의 낮은 억제효과를 보였다. 9월 11일 조사 후 이병 열매를 모두 제거한 다음 동일한 방법으로 옻 추출액을 계속처리하고 10월 2일에 조사한 결과 1차 조사 시기보다 대조구의 이병과율이 훨씬 낮은 7.0% 였으며, 옻 추출액 처리효과는 공시 처리 농도별로 각각 60.0, 54.3 및 10.0%로 조사되었다.