The in-vitro antibacterial effect of colored rice crude extracts against common bacteria associated with skin and soft-tissue infections
Issued Date
2013
Resource Type
Language
eng
Rights
Mahidol University
Suggested Citation
Pornpan Pumirat, พรพรรณ ภูมรัตน์, Natthanej Luplertlop, นัฏฐเนศวร์ ลับเลิศลบ (2013). The in-vitro antibacterial effect of colored rice crude extracts against common bacteria associated with skin and soft-tissue infections. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/63363
Title
The in-vitro antibacterial effect of colored rice crude extracts against common bacteria associated with skin and soft-tissue infections
Abstract
Skin and soft tissue infections (SSTIs) are caused mainly by Staphylococcus aureus, Pseudomonas aeruginosa, and
Escherichia coli bacteria. Due to the increasing emergence of bacterial resistance to existing antimicrobial
agents, plants are being used as an alternative source to develop safe, effective, and inexpensive new agents for
the treatment and prevention of bacterial infections. Recent studies show that Oryza sativa L., or rice, an important
source of nutrients and consumed by most of the world’s population, has exhibited suppressive effects on bacterial
infections. There are many varieties of rice, e.g. white, brown, black, and red; however, the relationship between
rice colors and antibacterial properties remains to be elucidated. This study aimed to investigate the antibacterial
activity of colored-rice crude extracts against bacteria causing SSTIs. Ethanol extraction was performed to prepare
crude extracts from four different types of colored rice: Hom Nil (HN), Neaw Dum (ND), Mun Poo (MP), and
Sang Yod (SY ). The paper disc diffusion method was used in this study. Minimum inhibitory concentration (MIC )
and minimum bactericidal concentration (MBC ) of colored-rice extracts were determined, and bacterial survival
percentage was also examined to assess antibacterial activity. Our results revealed that colored-rice crude extracts
exhibited anti-Staphylococcal action, and more notably, crude extracts of differently colored rice restricted diverse
antibacterial activities. This study provides a basic understanding of antibacterial properties found in colored rice,
against skin and wound pathogens. An understanding of these properties would be invaluable in the development
of alternative, natural and safe methods for controlling SSTIs.
Description
Joint International Tropical Medicine Meeting 2013: Towards global health: an Asian paradigm of Tropical Medicine 11-13 December 2013 Centara Grand Bangkok Convention Center at Central World, Bangkok, Thailand. Bangkok: Faculty of Tropical Medicine, Mahidol University; 2013. p.173.