논문 상세보기
pp.392-399
녹차는 생리활성의 촉진작용뿐아니라 항암, 항산화, 고혈압 억제효과, 체중조절 등 다방면의 약리효과를 보이는 것으로 보고되고 있다. 아울러, 녹차의 항균 및 항진균 작용에 관한 연구결과도 발표되고 있으나, 항균작용 기작에 접근한 기초 연구는 별로 많지 않다. 본 연구는 식품변패미생물에 대한 녹차추출물의 항균작용을 구명하는 기초자료를 획득하는데 그 목적이 있다. 녹차추출물의 항균력을 조사한 결과, 이상의 농도에서 뚜렷한 항균활성을 보였고, 광역의
Recent studies indicate that green tea may have anticancer, antioxidant, and antihypertensive effects, and aids body weight control and the promotion of various desirable physiological functions. However, few studies have investigated the antimicrobial effects of green tea. We sought to determine the antimicrobial activity of green tea extract against food spoilage microorganisms. The extract showed remarkable antimicrobial effects against a wide spectrum of putrefactive and food spoilage microorganisms when used at concentrations greater than . The extract showed thermal and pH stability in the range of and pH 3.11, respectively. Green tea extract seems to be an ideal natural antimicrobial, considering both efficacy and thermal and pH stabilities. Antimicrobial substances in green tea extract were investigated using electron microscopy and a -galactosidase assay. The data showed that the extract contains several efficacious materials, and that their activities are not synergistic but are instead independent. Our data indicate that hydrophilic antimicrobial substances in green tea extract might control food spoilage microorganisms owing to perturbation of the microbial cell membrane.
