@article {1821, title = {Alpha-glucosidase and DPP-IV Inhibitory Activities of Ethanol Extract from Caesalpinia sappan, Andrographis paniculata, and Syzygium cumini}, journal = {Pharmacognosy Journal}, volume = {14}, year = {2022}, month = {June 2022}, pages = {702-709}, type = {Research Article}, chapter = {702}, abstract = {

Background: Diabetes is one of the fastest-growing global health problems of the 21st century. Antidiabetic medicine has been widely marketed with various mechanisms of action. However, there are side effects from these drugs. Therefore, most diabetic patients consume herbal as complementary. Plants that have been shown to have potential as an antidiabetic are Caesalpinia Sappan, Andrographis Paniculata and Syzygium Cumini. Objective: This study aims to examine the in vitro antidiabetic activity of single and combined ethanol extract of those three plants by inhibiting alpha-glucosidase and DPP-IV (Dipeptidyl peptidase IV) enzymes. Materials and Methods: The alpha-glucosidase inhibitory activity was determined using the paranitrofenil alfa-D-glukopiranosida (pNPG) reaction at a wavelength of 405 nm. Acarbose was used as the positive control. The DPP-IV inhibitory activity using H-Gly-Pro-AMC substrate and detected by fluorescence at λex = 365 nm and λem=415-445 nm. Sitagliptin was used as the positive control. LC-MS analysis was performed to identify the compounds contained in the combined extract. Results: Caesalpinia sappan showed better activity to inhibit alpha-glucosidase enzyme than acarbose at IC50 of 9,29 μg/mL. The combined extract obtained higher inhibition as DPP-IV inhibitor than single extract at 63, 69\%. The highest compound in the combined extract were 5,7-Dihydroxy-3-(4{\textquoteright}-hydroxybenzyl) chromone, Protosappanin E-1, Saurufuran B and candidate mass C36H38N4O5. Conclusion: These results indicate that single extract or combined extract potential as antidiabetic.

}, keywords = {Alpha-glucosidase inhibitor, Andrographis paniculata, Caesalpinia sappan, DPP-IV Inhibitor, Syzygium cumini.}, doi = {10.5530/pj.2022.14.89}, author = {Sabila Robbani and Berna Elya and Raditya Iswandana} } @article {1611, title = {Antioxidant and Alpha Glucosidase Inhibitor Screening of Merremia peltata L. as Potential Traditional Treatment for Diabetes Mellitus}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {July 2021}, pages = {902-908}, type = {Original Article}, chapter = {902}, abstract = {

Introduction: Merremia peltata is ethnomedicine plant used as traditional medicine in Sulawesi, Sumatra, Maluku and Papua. M. peltata is used for diabetic. Diabetes mellitus therapy with inhibit activity of alpha glucosidase enzyme could delay absorption of monosaccharides after a meal and interrupt glucose transport into the circulation. Objective: This research purpose is to investigate in vitro antioxidant activity and alpha glucosidase enzyme inhibitor leaves and stem extract of M. peltata. Method: The Stem and leaves of M. peltata were extracted sequentially using the UAE method using hexane, ethyl acetate, and methanol as mobile phase/solvent. The M. peltata extracts were subjected to the antioxidant activity assay by the DPPH radical scavenging and FRAP method. Antidiabetic activity was determined by an enzymatic alpha glucosidase inhibitor. Result: The extract which had best performance in antioxidant activity was stem ME with value of IC50 in DPPH 47.41 μg/mL and total antioxidant power 340.04 μmol/g. This study showed that leaves and stem extract of M .peltata have potential alpha glucosidase inhibitors for diabetic therapy. Stem ME had the best activity with IC50 value 47.44 μg/mL, almost two times better than acarbose as a positive control (IC50 = 98.38 μg/mL). Leaves ME, leaves EA, and stem EA also give better activity of alpha glucosidase inhibitors than acarbose with IC50 value 67.24 μg/mL, 69.38 μg/mL, and 72.85 μg/mL, respectively. Conclusion: M. peltata has potential antioxidant and alpha glucosidase inhibitor activity for diabetic therapy.

}, keywords = {Alpha-glucosidase inhibitor, Antidiabetic, Antioxidant, Merremia peltata}, doi = {10.5530/pj.2021.13.116}, author = {Bannan Muthi{\textquoteright}atul Af-idah and Muhammad Hanafi and Berna Elya} } @article {1255, title = {The Potential of Stem Bark of Kayu Sarampa (Xylocarpus moluccensis (Lam.) M. Roen)) as α-glucosidase Inhibitor}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {September 2020}, pages = {1368-1376}, type = {Research Article}, chapter = {1368}, abstract = {

Introduction: The prevalence of diabetes mellitus type 2 in the world is more than 230 million people, increases about 3\% in a year. Kayu Sarampa or Nyirih batu (Xylocarpus moluccensis (Lam.) M. Roen) has traditionally been used to treat diabetic patient by native people in Ratahan, North Celebes, Indonesia. Therefore, this research was sequentially extracted bioactive component from stem bark of kayu sarampa showed alpha glucosidase inhibitor. Objective: To assess antioxidants and alpha glucosidase inhibitory activity of hexane, ethyl acetate, and methanol extract from stem bark of Kayu Sarampa. Method: The Stem bark was extracted with Reflux method using hexane, ethyl acetate, and methanol as mobile phae/solvent. The Hexane Extract (HE), Ethyl Acetic Extract (EAE) and Methanol Extract (ME) were subjected to the antioxidant activity assay by the 2.2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging and the ferric-reducing antioxidant power (FRAP) method. Antidiabetic activity was determined by enzymatic alpha-glucosidase inhibitor. Results: The extract which had the highest activity based on the DPPH test and FRAP test was the ME compared with EAE, and HE with IC50 values of 16.51 μg/mL, 34.10 51 μg/mL, and 38.82 51 μg/mL , respectively. Ferrous equivalent antioxidant capacity (FeEAC) method, methanolic extract had a higher reduction capacity than the EH and EEA which were 148.96 μmol/gr, 48.96 μmol/gr, and 148.96 μmol/gr, respectively. The result showed that kayu sarampa stem bark exhibited antidiabetic activity due to its high inhibition compared with control (acarbose). ME showed inhibition of 53,11\% followed with EAE 49,7\%, HE 44,53\%, and acarbose as control 29,32\%.Conclusion: stem bark of kayu sarampa have bioactive component as alpha glucosidase inhibitor

}, keywords = {Alpha-glucosidase inhibitor, Antidiabetic, Antioxidant, Kayu Sarampa}, doi = {10.5530/pj.2020.12.189}, author = {Fitri Santy Budiarso and Berna Elya and Muhammad Hanafi and Roshamur Cahyan Forestrania} }