Antimicrobial Activity of Some Medicinal Plants from Malaysia

Abstract

Problem statement: About 32 extracts from eight selected medicinal plants, namely Pereskia bleo, Pereskia grandifolia, Curcuma aeruginosa Roxb., Curcuma zedoria, Curcuma mangga, Curcuma inodora aff. Blatter, Zingiber officinale var. officinale (jahe gajah) and Zingiber officinale var. rubrum (jahe emprit) used by Malaysia traditional health care systems were screened for their antimicrobial activity against both Gram-positive bacteria and Gram-negative bacteria using agar disc diffusion assay. Approach: The efficacy of the extracts was compared to the commercially prepared antibiotic diffusion discs. Results: No inhibition was observed with the water fractions. Conclusion/Recommendations: None of the plants tested showed inhibition against Escherichia coli. Curcuma mangga showed some remarked inhibition against the bacteria used in this study.

Anti-nociceptive activity of Pereskia bleo Kunth. (Cactaceae) leaves extracts

“…Malek and Abd. Wahab, 2008) is a plant commonly used by the local communities in Malaysia due to its medicinal properties (Er et al, 2007;Philip et al, 2009;Tan et al, 2005). P. bleo is a spiny shrub with distinct orange-red flowers and is claimed to treat a variety of illnesses including diabetes, hypertension and as natural remedy for cancer-related diseases.…”

Chemical composition and antimicrobial activity of the essential oil from twigs and leaves of <i> Magnolia macclurei </i> (Dandy) Figlar from Ha Giang Province, Vietnam

“…Vùng ức chế vi sinh vật là nơi không thấy sự tăng trưởng khi quan sát bằng mắt thường. Vùng ức chế bằng hoặc lớn hơn 14 mm (bao gồm cả đường kính của lỗ) được đánh giá là có hoạt tính kháng vi sinh vật cao (Mothana & Lindequist, 2005;Philip et al, 2009).…”

“…Tinh dầu cành lá M. macclurei thể hiện hoạt tính ức chế trung bình và yếu (Mothana & Lindequist, 2005;Philip et al, 2009) đối với cả 3 chủng vi sinh vật được thử nghiệm với đường kính vùng ức chế từ 4 đến 12 mm. Trong số 3 chủng vi sinh vật được thử nghiệm, E. coli và C. albicans có tính chịu đựng với tinh dầu M. macclurei cao hơn S. aureus.…”

A Review on Phytochemical Medicinal Plants Against Pathogenic Bacteria in South East Ethiopia

“…Natural products perform various functions and many of them have interesting and useful biological activities. More than 35,000 plant species are being used in various human cultures around the world for medicinal purpose (Philip et al, 2009). The potential of higher plants as source for new drugs is still largely unexplored.…”

“…Increasing demand for new drugs, over use and miss use of antibiotics have contributed to the development and spread of the resistant microorganisms to the treatment (Elgayyar et al, 2001). Due to this factor researchers are increasingly turning their attention to natural products looking for new leads to develop better drugs against cancer, as well as viral and microbial infection (Philip et al, 2009). This suggests that the strength of biological activities of a natural product is dependent on the diversity and quantity of a natural product.…”