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Polarity-Based Solvents Extraction of Opuntia dillenii and Zingiber officinale for In Vitro Antimicrobial Activities

Umar, Muhammad Ihtisham, Javeed, Aqeel, Ashraf, Muhammad, Riaz, Amjad, Mukhtar, Muhammad Mahmood, Afzal, Sheryar, Altaf, Rabia
International journal of food properties 2013 v.16 no.1 pp. 114-124
Zingiber officinale, antimicrobial properties, Staphylococcus aureus, petroleum, methanol, solvents, Bacillus subtilis, chloroform, Salmonella Typhi, Opuntia stricta var. dillenii, Escherichia coli
Extracts from dried stem of Opuntia dillenii and rhizome of Zingiber officinale were evaluated for antimicrobial activities by extraction in non-polar (petroleum ether and chloroform) and polar solvents (methanol and water). Bacillus subtilis and Staphylococcus aureus showed considerable susceptibility to all extracts of Opuntia dillenii and Zingiber officinale . Ether and chloroform extracts of Opuntia dillenii showed improved antimicrobial activity against Escherichia coli (gram negative) as compared to that of its methanolic and water extracts. On the other hand, methanolic and water extracts of Zingiber officinale showed better susceptibility for Escherichia coli. Salmonella typhi (gram negative) was found to be resistant to all extracts of both Opuntia dillenii and Zingiber officinale . Our results indicated that both Opuntia dillenii and Zingiber officinale have potent antimicrobial activity that is also based on solvent polarity during extraction.