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- 저자 : 강다래 ( Kang¸ Da-rae ) (검색결과 3 건)
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국내산 주요허브 열수 추출물의 항산화, 항균활성 및 세포독성
강다래,심관섭,최호성,나종삼,Kang, Da-Rae,Shim, Kwan-Seob,Choe, Ho-Sung,Na, Chong-Sam 한국유기농업학회 2017 韓國有機農業學會誌 Vol.25 No.4
본 연구는 10종 허브 추출물에 대한 DPPH 자유라디칼 소거능, 항균효과 및 세포독성에 미치는 영향을 조사함으로써 항생제 대체제로서 활용 가능성을 위한 기초 자료로 제시하고자 수행하였다. 10종의 허브 추출물의 DPPH 자유라디칼 소거능은 로즈마리, 오레가노 및 캐모마일이 각 49.9, 48.9, 47.7%으로 유의적으로 가장 높았다. 허브 추출물의 E. coli K99와 S. typhimurium에 대한 항균활성은 베르가못, 오레가노, 타임과 로즈마리가 두 균주에 공통적으로 활성이 높게 측정되었으며, 활성이 나타나는 농도에서의 세포독성이 비교적 낮아 안전한 것으로 관찰되었다. 본 연구 결과 유기 축산을 위한 가축 내 천연 항생제 대체제로 항균 및 항산화 활성이 높고, 세포독성이 낮게 나타난 오레가노와 로즈마리가 천연물질로 활용 가능할 것으로 판단되며, 다양한 추출 조건으로 최적 추출 효율을 검토하여 추가적인 생리활성물질 검정과 해당 물질에 대한 연구가 필요하다. In this study, the DPPH free radical scavenging activity, antimicrobial effects, growth inhibition and cytotoxicity of herb extracts were determined to screen alternative antibiotics. Hot water extracts of 10 species herbs (Origanum vulgare, Monarda didyma, Echinacea purpurea, Ocimum basilicum, Mentha piperita, Melissa officinalis, Thymus vulgaris, Stevia rebaudiana, Rosmarinus officinalis, Matricaria recutica) were used. DPPH free radical scavenging activity of all herb extracts was ranged from 31.4-49.9%, and significantly great activties were found at Rosmarinus officinalis, Origanum vulgare and Matricaria recutica (P<0.05). Hot water extracts of monarda didyma, origanum vulgare, thymus vulgaris and rosmarinus officinalis showed greater antimicrobial activities compared to others. Additionally, those four extracts represented relatively low cytotoxicity compared to others. As a result, it was found that Origanum vulgare and Rosmarinus officinalis which possessed great antioxidant and antimicrobial activity with less cytotoxicity. So these two herb extracts can be used as an alternative of antibiotics for organic farming.
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일반농장과 동물복지농장 닭의 혈액 내 gas, 생화학인자, 호르몬 농도 및 근육 내 스트레스 반응인자 비교
김희은 ( Kim¸ Hee-eun ),박진룡 ( Park¸ Jin-ryong ),이정은 ( Lee¸ Jeong-eun ),강다래 ( Kang¸ Da-rae ),장애라 ( Jang¸ Ae-ra ),최호성 ( Choe¸ Ho-sung ),심관섭 ( Shim¸ Kwan-seob ) 한국유기농업학회 2021 韓國有機農業學會誌 Vol.29 No.3
It is generally recognized that high stocking density can increase the risk of immune dysfunction and reduction in productivity cause of elevated stress in broiler farm. The domestic livestock industry is implementing a certification system for animal welfare and livestock farms to reduce the problem of dense breeding. This study compared broiler from the general farm and animal welfare farm to confirm the effectiveness of animal welfare farms against stress. Gas concentrations in a farm of general and animal welfare farms were analyzed, blood (n=10) of the 28-day-old broiler was collected, the partial pressure of the gas in the blood was analyzed using whole blood, and biochemical factors and hormones were analyzed using the serum. Glycogen and L-lactate are analyzed using ELISA kit on finely pulverized muscles (n=10). CO<sub>2</sub> and NH<sub>3</sub> levels in the farm were significantly higher in general farm. Partial carbon dioxide tension (PCO<sub>2</sub>) in blood was significantly higher and partial oxygen tension (PO<sub>2</sub>) was significantly lower in the general farm. Creatinine (CREA), glucose (GLU), aspartateaminotransferase (AST), and creatinekinase (CK) in the blood were significantly higher in the general farm, and total protein (TP) and globulin (GLOB) were significantly higher in animal welfare farm. Blood corticosterone and norepinephrine were significantly higher in general farm and epinephrine was significantly higher in animal welfare farm. These results imply that animal welfare farm provides a stress-reduced breeding environment.
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일반 및 동물복지농장 돼지의 혈액 및 근육 내 스트레스 인자 비교
이정은 ( Lee Jeong-eun ),박진룡 ( Park Jin-ryong ),강다래 ( Kang Da-rae ),김희은 ( Kim Hee-eun ),남기창 ( Nam Ki-chang ),심관섭 ( Shim Kwan-seob ) 한국유기농업학회 2020 韓國有機農業學會誌 Vol.28 No.4
Intensive farming methods that do not guarantee animal welfare can induce stress in pigs. Stress, in turn, can reduce their disease resistance and influence their hormones and metabolites in such a manner that productivity is negatively affected. This study was conducted to compare the stress related factors and blood characteristics of pigs raised on conventional farms and those raised on animal welfare farms. We measured the levels of cortisol, epinephrine and norepinephrine, biochemical parameters in blood and glycogen, L-lactate and heat shock protein 70 (HSP70) in muscle, as physiological markers of indicating the stress in conventional farm pigs (Control, n=10) and animal welfare farm pigs (Welfare, n=10). We found that there was a significant difference in the albumin-globulin ratio (A/G ratio), as well as the albumin (ALB), blood urea nitrogen (BUN) and aspartate aminotransferase (AST) levels between the two farms. Epinephrine was significantly higher in conventional farm, while level of norepinephrine was higher in animal welfare farm. There was no significant difference in cortisol, which is known as a stress hormone, across the two groups of farms. Muscular glycogen content was significantly high in animal welfare farm pigs. While L-lactate tended to be low in the animal welfare farm pigs, the difference between them and the conventional farm cohorts was not significant. HSP70 showed high levels of expression in conventional farm. Thus, we suggested that blood parameter results showed a stress response in the livers of conventional farm, and that catecholamine hormones, glycogen, L-lactate and HSP70 can be used as physiological factors of assessing animal welfare.
ScienceON
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