Our Scientists
Dr. Souwalak Phongpaichit
Dr. Souwalak Phongpaichit
  • B. Pharm.Hons, Chulalongkorn University
  • M.Sc. (Microbiology), Mahidol University
  • Dr.sc.hum.(Microbiology), University of Heidelberg
  • Pharmacological activities of medicinal plants, especially, analgesic, antipyretic and anti-inflammatory, bronchodilator, antihypertensive, anti-ulcer, gastro-intestinal stimulant or relaxant as well as central nervous system activities.
  • Toxicology testing: acute, subacute, subchronic and chronic toxicity as well as dermal toxicity.
  • Phongpaichit, S., Kummee, S., Niltat, L. and Itarat, A. 2007. Antimicrobial activity of oil from the root of Cinnamomum porrectum. Songklanakarin J. Sci. Technol. 29 (Suppl.1):11-16.
  • Phongpaichit, S., Liamthong, S., Mathew, A, G. and Chethanond, U. 2007. Prevalence of class 1 integrons in commensal Escherichia coli from pigs and pig farmers in Thailand. J. Food Prot. 70:292-299.
  • Pancharoen, O., Petveroj, S. and Phongpaichit, S. 2007. Rotenoids from the flowers of Millettia brandisiana. Songklanakarin J. Sci. Technol. 29:151-156.
  • Phongpaichit, S., Rungjindamai, N., Rukachaisirikul, V. and Sakayaroj, J. 2006. Antimicrobial activity in cultures of endophytic fungi isolated from Garcinia species. FEMS Immunol. Microbiol. 48:367-372.
  • Deachathai, S., Mahabusarakam, W., Phongpaichit, S., Taylor, W.C., Zhang, Y.-J. and Yang, C.-R. 2006. Phenolic compounds from the flowers of Garcinia dulcis. Phytochemistry 67: 464-469.
  • Jones, E.B.G., Pilantanapak, A., Chatmala, I., Sakayaroj, J.,Phongpaichit, S. and Choeyklin, R. 2006. Thai marine fungal diversity. Songklanakarin J. Sci. Technol. 28: 678-708.
  • Leelasuphakul, W., Sivanunsakul, P. and Phongpaichit, S.2006. Purification, characterization and synergistic activity of -1,3-glucanase and antibiotic extract from an antagonistic Bacillus subtilis NSRS 89-24 against rice blast and sheath blight pathogens. Enz. Microb. Technol. 38: 990-997.
  • Panthong, k., Phongcharoen, W., Phongpaichit, S. and Taylor, W.C. 2006. Tetraoxygenated xanthones from the fruits of Garcinia cowa. Phytochemistry 67:999-1004.
  • Phongcharoen, W., Rukachaisirikul, V., Phongpaichit, S., Rungjindamai, N. and Sakayaroj, J. 2006. Pimarane diterpene and cytochalasin derivatives from the endophytic fungus Eutypella scoparia PSU-D44. J. Nat. Prod. 69:856-858.
  • Phongpaichit, S., Preedanan, S., Rungjindama, N., Sakayaroj, J., Benzies, C., Chuaypat, J. and Plathong, S. 2006. Aspergillosis of the gorgonian sea fan Annella sp. After the tsunami at Mu Ko Similan National park, Andaman Sea, Thailand. Coral Reefs. 25(2):296-296.
  • Phongpaichit, S., Vuddhakul, V., Subhadhirasakul, S. and Wattanapiromsakul, C. 2006. Evaluation of antimycobacterial activity of extracts from plants used as self-medication by AIDSpatients in Thailand. Pharm. Biol. 44: 71-75.
  • Rukachaisirikul, V., Naklue, W., Phongpaichit, S., Towatana, N.H. and Meneenoon, K. 2006. Phloroglucinols, depsidones and xanthones from the twigs of Garcinia parvifolia. Tetrahedron 62: 857-8585.
  • Sawangjaroen, N., Phongpaichit, S., Subhadhirasakul, S., Visuthi, M., Srisuwan, N. and Thammapalerd, N. 2006. The anti-amoebic activity of some medicinal plants used by AIDS patients in southern Thailand. Parasitol. Res. 98:588-592.
  • Voravuthikunchai S.P., Phongpaichit, S. and Subhadhirasakul, S. 2006. Evaluation of antibacterial activities of medicinal plants widely used among AIDS patients in Thailand. . Pharm. Biol. 43: 701-706.
  • Deachathai, S.,Mahabusarakam, W., Phongpaichit, S. and Taylor, W.C. 2005. Phenolic compounds from the fruit of Garcinia dulcis. Phytochemistry 66: 2368-2375.
  • Phongpaichit, S., Pujenjob, N., Rukachaisirikul, V. and Ongsakul, M. 2005. Antimicrobial activities of the crude methanol extract of Acorus calamus Lin. Songklanakarin J. Sci. Technol. (Suppl. 2): 517-523.
  • Phongpaichit, S., Subhadhirasakul, S. and Wattanapiromsakul, C. 2005. Antifungal activities of extracts from Thai medicinal plants against opportunistic fungal pathogens associated with AIDS patients. Mycoses 48 (5): 333-338.
  • Rukachaisirikul, V., Kaewbamrung, C., Phongpaichit, S. and Hajiwangoh, Z. 2005. Eudesmane sesquiterpenes from the aquatic fungus Beltrania rhombica. Chem. Pharm. Bull. 53 (2): 238-240.
  • Rukachaisirikul, V., Naklue, W., Sukpondma, Y. andPhongpaichit, S.2005. An antibacterial biphenyl derivative from Garcinia bancana MIQ. Chem. Pharm. Bull. 53 (3): 342-343.
  • Rukachaisirikul, V., Phainuphong, P., Sukpondma, Y.,Phongpaichit, S.and Taylor, W.C. 2005. Antibacterial caged-tetraprenylated xanthones from the stem bark of Garcinia scortechinii. Planta Med. 71: 165-170.
  • Rukachaisirikul, V., Saelim, S., Karnsomchoke, P. andPhongpaichit, S.2005. Frieolanostanes and lanostanes from the leaves of Garcinia hombroniana. J. Nat. Prod. 68(8):1222-1225.
  • Rukachaisirikul, V., Tadpetch, K., Watthanaphanit, A., Saengsanae, N. and Phongpaichit, S. 2005. Benzopyran, biphenyl, and tetraoxygenated xanthone derivatives from the twigs of Garcinia nigrolineata. J. Nat. Prod. 68 (8): 1218-1221.
  • Sakayaroj, J., Pang, L.K., Jones, E.B.G., Vrijmoed, L.L.P., Abdel-Wahab, M.A. and Phongpaichit, S. 2005. A systematic reassessment of the marine ascomycetes Torpedospora and Swampomyces. Bot. Mar. 48:395-406.
  • Sakayaroj, J., Pang, L.K., Phongpaichit, S. and Jones, E.B.G. 2005. A phylogenetic study of the genus Haligena (Halosphaeriales, Ascomycota). Mycologia. 97: 804-811.
  • Sakayaroj, J., Phongpaichit, S. and Jones, E.B.G. 2005. Viability and biodiversity of freshwater hyphomycetes in foam at Ton Nga Chang Wildlife-Sanctuary, southern Thailand. Fungal Diversity 18: 135-145.
  • Sawangjaroen, S., Subhadhirasakul, S., Phongpaichit, S., Siripanth, C., Jamjaroen, K. and Sawangjaroen, K. 2005. The in vitro anti-giardial activity of extracts from plants that are used for self-medication by AIDS patients in southern Thailand. Parasitol. Res. 95: 17-21.
  • Sukpondma, Y., Rukachaisirikul, V. and Phongpaichit, S.2005. Antibacterial caged-tetraprenylated xanthones from the fruits of Garcinia hunburyi. Pharm. Chem. Bull. 53(7):850-852.
  • Sukpondma, Y., Rukachaisirikul, V. and Phongpaichit, S.2005. Xanthine and sesquiterpine derivatives from the fruits of Garcinia scortechinii. J. Nat. Prod. 68:1010-1017.
  • Chatmala. I., Sakayaroj, J., Somrithipol, S. and Phongpaichit, S. 2004. Marine hyphomycetes of Thailand and Cumulospora varia sp. nov. Fungal Diversity 17: 1-9.
  • Mahabusarakam, W., Deachathai, S., Phongpaichit, S., Jansakul, C. and Taylor, W.C. 2004. A benzyl and isoflavone derivatives from Derris scandens Benth. Phytochemistry. 65(8): 1185-1191.
  • Phongpaichit, S., Pujenjob, N., Rukachaisirikul, V. and Ongsakul, M. 2004. Antifungal activity from leaf extracts of Cassia alata L., Cassia fistula L. and Cassia tora L.. Songklanakarin J. Sci. Technol. 26: 741-748.
  • Sakayaroj, J., Jones, E.B.G., Chatmala, I. and Phongpaichit, S.2004. Marine Fungi. In: Thai Fungal Diversity (eds. E.B.G. Jones, M. Tanticharoen and K.D. Hyde). BIOTEC, Thailand: 107-117.
  • Voravuthikunchai, S., Lortheeranuwat, A., Jeeju, W., Sririrak, T.,Phongpaichit, S. and Supawita, T. 2004. Effective medicinal plants against enterohaemorrhagic Escherichia coli O157:H7. J. Ethnopharmacol. 94: 49-54.
  • Rukachaisirikul, V., Kamkaew, M., Sukavisit, D.,Phongpaichit, S., Sawangchote, P. and Taylor, W.C. 2003. Antibacterial xanthones from the leaves of Garcinia nigrolineata. J. Nat. Prod. 66(12): 1531-1535.