α-Glucosidase Inhibitory Activity of Water Soluble Extract from Thai Mimosaceous Plants

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Tanasorn Tunsaringkarn
Anusorn Rungsiyothin
Nijsiri Ruangrungsi

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The polar part of twenty species of Thai plants in Mimosaceae family was studied for their α-glucosidase inhibition activity by spectrophotometry. The result showed that most water soluble parts of Albizia lebbeck (L.) Benth branch, Xylia xylocarpa (Roxb.) Taub. bark, Archidendron jiringa I.C. Nielsenseed coat, Albizia lebbeck (L.) Benth. branch bark and Parkia speciosa Hassk pericarb showed high α-glucosidase inhibition with 77.90, 75.62, 74.09, 68.10 and 61.86 percent respectively whilst their half inhibition concentrations (IC50 ) were 0.1554, 0.3143, 0.3829, 0.3965 and 0.4104 mg/ml respectively

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