Es, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia?2013 Phang et al.; licensee BioMed Central Ltd. This can be an Open Access short article distributed below the terms from the Inventive Commons Attribution License (creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, offered the original perform is appropriately cited.Phang et al. BMC Complementary and Alternative Medicine 2013, 13:243 biomedcentral/1472-6882/13/Page 2 ofBackground Alpinia species, in the Zingiberaceae loved ones happen to be extensively studied for their chemical and biological properties . Based on the ethnobotanical research, numerous species of this genus happen to be utilised in regular medicine, and within the preparations and flavorings of food in a lot of Asian countries. Amongst the Alpinia species, the rhizomes of Alpinia galanga happen to be broadly employed as spice and inside the remedy of stomachic in China and Thailand; coughs, asthma, bronchitis, headache, inflammation, rheumatoid arthritis and colic in Malaysia [2,3]. A single wild species, Alpinia mutica has been employed to treat stomach upset by natives and it has also been reported to show fantastic antioxidant and cytotoxic anticancer properties . A number of novel compounds isolated from the species of Alpinia had been identified to possess anti-cancer, antiinflammatory, anti-spasmodic, anti-ulcerogenic, RORγ Modulator Purity & Documentation neuroprotective, analgesic, hepatoprotective and cardioprotective properties . On account of its wide therapeutic TXA2/TP Antagonist site values, it truly is of fantastic interest to conduct much more research around the unexplored species from this genus which might possess medicinal properties, but has not been fully studied. Within this endeavour, Alpinia pahangensis was thus chosen for investigation. Alpinia pahangensis, a wild ginger, occcuring significantly less widespread within the genus, is actually a perennial plant distributed inside the lowlands of Pahang, Malaysia. The rhizomes of A. pahangensis have already been used by tribal natives for relieving flatulence. On the other hand, there is a limited study on the biological activity from the A. pahangensis. A current report by Awang et al.  showed that the vital oil extracted from the rhizomes and leaves of Alpinia pahangensis had good antimicrobial activity against Staphylococcus aureus strains and selected fungi. Absolutely free radicals created in our physique because of aerobic respiration and substrate oxidation, may cause oxidative strain which might contribute towards the development of quite a few ailments like cancer, Alzheimer’s illness, aging, diabetes, Parkinson illness and atherosclerosis [7-13]. Overproduction of cost-free radicals in our bodies could be escalating due to pollution along with other external aspects, and their removal by our antioxidant systems can be decrease than ahead of resulting from a number of components related to our life style amongst other individuals. Oxidative stress causes really serious harm to vital cellular macromolecules like protein and DNA. Having said that, the production of no cost radicals might be balanced by antioxidant actions of endogenous enzymes also as organic and synthetic antioxidants [14,15]. Antioxidants exert its action via many mechanisms like prevention of chain initiation, chelating of transition metal ion catalysts, decomposition of peroxidases, prevention of continued hydrogen abstraction and radical scavenging .These deleterious effects of free of charge radicals have drawn the attentions of scientists for the significance of antioxidants in prevention and therapy of diseases . As a result, there has been rising interest.