标题：Preliminary Phytochemical Screening and in Vitro Antioxidant Potential of Aqueous, Hydro-Methanolic And Hydro-Ethanolic Extracts of Ginger (Zingiber Officinale): A Comparative Analysis Between Nigerian And Indian Variety.
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2017
卷号：6
期号：8
页码：17447
DOI：10.15680/IJIRSET.2017.0608273
出版社：S&S Publications
摘要：Ginger (Zingiber officinale Roscoe) is a herb that is well known and widely used, especially in Asia andAfrica, which contains several interesting bioactive constituents and possesses health promoting properties. In thisstudy, Phytochemical content and antioxidant potential of Nigerian and Indian ginger were assessed in an effort tocompare and validate the medicinal potential of the plant. Aqueous, hydromethanolic and hydroethanolic extracts ofIndian and Nigerian varieties were prepared by extraction process. Both varieties were found to contain high amount ofsecondary metabolites with exception of phlobotannins which happened to be in low quantity and tannins which isentirely absent in all the extracts. DPPH scavenging activity, Hydrogen peroxide and reducing power were assayed.The comparison carried out between different extracts of the two varieties using t-test at p=0.05 revealed a significantdifference in terms of antioxidant activity. Indian variety was generally found to have more antioxidant activity than theNigerian one with the exception of aqueous extract of Nigerian variety. This is probably due to high level of phenolicsand flavonoids in the Indian variety. This study validated the medicinal potential of Zingiber officinale and establishedsome relationship between the two varieties in terms of their antioxidant properties.
