ALPHA-GLUCOSIDASE INHIBITORY AND ANTIOXIDANT ACTIVITIES FROM ETHANOL EXTRACTS OF SIX THAI VEGETABLES

Authors

  • Prakit Chaithada General science, Faculty of Education, Nakhon Si Thammarat Rajabhat University, 80280, Thailand.
  • Patchareeya Rattanapan General science, Faculty of Education, Nakhon Si Thammarat Rajabhat University, 80280, Thailand.
  • Amita Supawatin General science, Faculty of Education, Nakhon Si Thammarat Rajabhat University, 80280, Thailand.
  • Saowanee Maungchanburee Biomedical sciences, Faculty of Medicine, Prince of Songkla University, Thailand.
  • Juthamas Supapan General science, Faculty of Education, Nakhon Si Thammarat Rajabhat University, 80280, Thailand.

Keywords:

Alpha-glucosidase, antioxidant activity, Thai vegetables

Abstract

The objective of this research was to determine the alpha-glucosidase inhibition and antioxidant activities by DPPH and ABTS assay of Thai vegetables. Six kinds of local vegetables including Coccinia grandis L., Centella asiatica L., Diplazium esculentum (Retz.) Sw., Tiliacora triandra (Colebr.) Diels, Emilia sonchifolia (L.) DC and Carissa carandas L. were extracted by ethanol using soxhlet extraction. Analysis of alpha-glucosidase inhibitory and the antioxidant activity by DPPH and ABTS assay, the results showed that the ethanolic extracts from Tiliacora triandra (Colebr.) Diels (TT) and Carissa carandas L. (CC) showed the strongest antioxidant activity and alpha-glucosidase inhibitory. Tiliacora triandra (Colebr.) Diels and Carissa carandas L. extracts exhibited alpha-glucosidase inhibitory with IC50 of 115.24 ±5.91 and 212.65 ±4.09 ppm, respectively. Tiliacora triandra (Colebr.) Diels inhibited DPPH and ABTS radicals with IC50 of 37.35±1.70 and 62.42±2.80 ppm, respectively. Carissa carandas L. extracts showed the inhibition of DPPH and ABTS radicals with IC50 of 76.92 ±1.55 and 78.54 ±3.53 ppm, respectively. Emilia sonchifolia (L.) DC and Centella asiatica L. extracts showed moderate antioxidant activity and alpha-glucosidase inhibitory, while Coccinia grandis L. could not show both activities.

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Published

2026-08-28

How to Cite

Chaithada, P., Rattanapan, P., Supawatin, A., Maungchanburee, S., & Supapan, J. (2026). ALPHA-GLUCOSIDASE INHIBITORY AND ANTIOXIDANT ACTIVITIES FROM ETHANOL EXTRACTS OF SIX THAI VEGETABLES. Suranaree Journal of Science and Technology, 28(6), 070025(1–6). retrieved from https://ph04.tci-thaijo.org/index.php/SUJST/article/view/15007

Issue

Vol. 28 No. 6 (2021): November - December

Section

Research Article