The Antioxidative and Antimicrobial Ability of Ethanol Extracts from Rosa hybrida

장미 에탄올 추출물의 항산화성 및 항균성

  • Lee, Hye-Ran (Department of Food and Nutrition, Ewha Womans University) ;
  • Lee, Ji-Min (Department of Food and Nutrition, Ewha Womans University) ;
  • Choi, Nam-Soon (Department of Food and Nutrition, Baewha Woman's College) ;
  • Lee, Jong-Mee (Department of Food and Nutrition, Ewha Womans University)
  • 이혜란 (이화여자대학교 생활과학대학 식품영양학과) ;
  • 이지민 (이화여자대학교 생활과학대학 식품영양학과) ;
  • 최남순 (배화여자대학 식품영양과) ;
  • 이종미 (이화여자대학교 생활과학대학 식품영양학과)
  • Published : 2003.06.01

Abstract

This research was conducted to investigate the possibilities of usage of rose (Rosa hybrida L. cv. Mary Devor) by examining th antioxidative and antimicrobial activities of extracts with various levels of ethanol concentrates. Proximate composition, dietary fiber, and flavonoids contents were analyzed, and total antioxidant status and yield ratios of extraction of rose were measured. The rose extracts were extracted in different level of ethanol concentrates (0, 75, 85, 95%), and peroxide value, acid value, and TBA value were investigated in different level of concentrates of extracts added and time duration of storage. The results were as follows; derivation period from measuring peroxide value showed that the rose (Petal & Calyces) extract-added group showed longer derivation period than the control group, tocopherol-added, or BHT-added groups, and it proved to be a highly effective antioxidant as a result. It showed the longest derivation period especially when 85% ethanol extract was added with concentration of 0.05%. For the acid values and TBA values of the extract added oil, the rose extract-added group and BHT-added group showed lower values than the control group and tocopherol-added group as th length of time for storage becomes longer. In fact, the rose extracts suggested the possibility to be used as a natural antioxidants as it showed high antioxidative effect similar to BHT. Overall, the rose extracts from each solvent showed high antimicrobial effects against Escherichia coli, Salmonella typhimurium, Staphylococcus aureus than control group. Especially, 85% ethanol extract showed significantly high antimicrobial effect against Escherichia coli.

Keywords

Rosa hybrida;antioxidative;antimicrobial;ethanol extract

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