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1

Flores-Bocanegra, Laura, Rafael Torres-Colín, Martin González-Andrade, José S. Calderón та Rachel Mata. "In Vivo and In Vitro α-Glucosidase Inhibitory Activity of Perfoliatin a from Melampodium Perfoliatum". Natural Product Communications 14, № 1 (2019): 1934578X1901400. http://dx.doi.org/10.1177/1934578x1901400102.

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As part of our effort to discover new α-glucosidase inhibitors from natural sources, it was found that an aqueous extract from Melampodium perfoliatum (Cavanilles) Kunth (Asteraceae) inhibited the activity of rat-intestinal α-glucosidases in a concentration dependent manner (IC50= 958 μg/mL). Fractionation of the active extract led to the isolation of perfoliatin A (1), which was active against the mammal α-glucosidases and a recombinant α-glucosidase with maltase-glucoamylase activity obtained from Ruminococcus obeum. Kinetic analysis revealed that the interaction of 1 with R. obeum-α-glucosi
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2

Widowati, Wahyu, Maesaroh Maesaroh, Nurul Fauziah, Pande Putu Erawijantari, and Ferry Sandra. "Free Radical Scavenging and Alpha/Beta-glucosidases Inhibitory Activities of Rambutan (Nephelium lappaceum L.) Peel Extract." Indonesian Biomedical Journal 7, no. 3 (2015): 157. http://dx.doi.org/10.18585/inabj.v7i3.180.

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BACKGROUND: Diabetes mellitus (DM) is associated with oxidative reaction and hyperglycemic condition. Human body has an antioxidant defense system toward free radical, but overproduction of free radical causing imbalance condition between the free radical and the antioxidant defense in the body that lead to several diseases, including DM. Glucosidase is an enzyme that hydrolize carbohydrates causing increase of blood glucose level, so by inhibiting this enzyme blood glucose level in plasma could be effectively decreased. Rambutan (Nephelium lappaceum L.) peel has been reported to have many pot
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3

Kato, Naoki, Sachie Suyama, Masao Shirokane, Masashi Kato, Tetsuo Kobayashi та Norihiro Tsukagoshi. "Novel α-Glucosidase from Aspergillus nidulans with Strong Transglycosylation Activity". Applied and Environmental Microbiology 68, № 3 (2002): 1250–56. http://dx.doi.org/10.1128/aem.68.3.1250-1256.2002.

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ABSTRACT Aspergillus nidulans possessed an α-glucosidase with strong transglycosylation activity. The enzyme, designated α-glucosidase B (AgdB), was purified and characterized. AgdB was a heterodimeric protein comprising 74- and 55-kDa subunits and catalyzed hydrolysis of maltose along with formation of isomaltose and panose. Approximately 50% of maltose was converted to isomaltose, panose, and other minor transglycosylation products by AgdB, even at low maltose concentrations. The agdB gene was cloned and sequenced. The gene comprised 3,055 bp, interrupted by three short introns, and encoded
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4

Burgess, Edwin R., Neil D. Sanscrainte, Caitlin E. Taylor, Lyle J. Buss та Alden S. Estep. "Expression, activity, and consequences of biochemical inhibition of α- and β-glucosidases in different life stages of Culex quinquefasciatus". PLOS ONE 18, № 8 (2023): e0286609. http://dx.doi.org/10.1371/journal.pone.0286609.

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Mosquitoes have a wide range of digestive enzymes that enable them to utilize requisite blood and sugar meals for survival and reproduction. Sugar meals, typically derived from plant sources, are critical to maintain energy in both male and female mosquitoes, whereas blood meals are taken only by females to complete oogenesis. Enzymes involved in sugar digestion have been the subject of study for decades but have been limited to a relatively narrow range of mosquito species. The southern house mosquito, Culex quinquefasciatus, is of public health importance and seldom considered in these types
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5

Alarico, Susana, Milton S. da Costa та Nuno Empadinhas. "Molecular and Physiological Role of the Trehalose-Hydrolyzing α-Glucosidase from Thermus thermophilus HB27". Journal of Bacteriology 190, № 7 (2008): 2298–305. http://dx.doi.org/10.1128/jb.01794-07.

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ABSTRACT Trehalose supports the growth of Thermus thermophilus strain HB27, but the absence of obvious genes for the hydrolysis of this disaccharide in the genome led us to search for enzymes for such a purpose. We expressed a putative α-glucosidase gene (TTC0107), characterized the recombinant enzyme, and found that the preferred substrate was α,α-1,1-trehalose, a new feature among α-glucosidases. The enzyme could also hydrolyze the disaccharides kojibiose and sucrose (α-1,2 linkage), nigerose and turanose (α-1,3), leucrose (α-1,5), isomaltose and palatinose (α-1,6), and maltose (α-1,4) to a
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6

Li, Xun, Hua Xiang Gu, Hao Shi та Fei Wang. "Overexpression and Phylogenetic Analysis of a Thermostable α-Glucosidase from Thermus thermophilus". Advanced Materials Research 1004-1005 (серпень 2014): 841–48. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.841.

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The α-glucosidase geneaglfromThermus thermophilusHB8 was cloned into expression vector pBV220. The phylogenetic trees of α-glucosidases were constructed using Neighbor-Joining (NJ) and Maximum-Parsimony (MP) methods. Evolution analysis indicated the α-glucosidase fromT. thermophileHB8 was distant from the other glycoside hydrolases 4 and 31 α-glucosidases. By weakening the mRNA secondary structure and replacing the rare codons for the N-terminal amino acids of the target protein, the expression level of theaglwas increased 30-fold. The recombinant AGL was purified by the heat treatment, and ha
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7

Pavan Kumar Kurakula, Tharun D, Mahantesh S, et al. "Evaluation of in-vitro antidiabetic activity of leaf juice of Plectranthus amboinicus (lour.)." International Journal of Novel Trends in Pharmaceutical Sciences 10, no. 1 (2020): 9–17. http://dx.doi.org/10.26452/ijntps.v10i1.1143.

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Diabetes mellitus ‘the disease of modern civilization’ is characterized by chronic hyperglycaemia. The management of elevated post prandial glucose is critical to control the sequale of complications and α-amylase, α-glucosidases are responsible for elevated plasma glucose. Enzyme inhibitors in current clinical practice like acarbose, voglibose etc. are known to cause various gastrointestinal side effects. The present study was aimed to screen for potential α-amylase and α-glucosidase inhibitors from natural sources by in–vitro antidiabetic assays to overcome the side effects and toxicity. Dif
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8

Liu, Yang, Xue Zhou, Dan Zhou, Yongxing Jian, Jingfu Jia та Fahuan Ge. "Isolation of Chalcomoracin as a Potential α-Glycosidase Inhibitor from Mulberry Leaves and Its Binding Mechanism". Molecules 27, № 18 (2022): 5742. http://dx.doi.org/10.3390/molecules27185742.

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Diabetes is a chronic metabolic disease, whereas α-glucosidases are key enzymes involved in the metabolism of starch and glycogen. There is a long history of the use of mulberry leaf (the leaf of Morus alba) as an antidiabetic herb in China, and we found that chalcomoracin, one of the specific Diels–Alder adducts in mulberry leaf, had prominent α-glucosidase inhibitory activity and has the potential to be a substitute for current hypoglycemic drugs such as acarbose, which have severe gastrointestinal side effects. In this study, chalcomoracin was effectively isolated from mulberry leaves, and
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9

Sinha, Durgeshnandani, Trilochan Satapathy, Parag Jain, et al. "In Vitro Antidiabetic Effect of Neohesperidin." Journal of Drug Delivery and Therapeutics 9, no. 6 (2019): 102–9. http://dx.doi.org/10.22270/jddt.v9i6.3633.

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Objective: The present study was performed to determine in vitro antidiabetic effect of neohesperidin. To evaluate inhibitory effect of neohesperidin on α-amylase and α-glucosidase diabetes causing enzyme.
 Methods and Materials: Invitro carbohydrate metabolizing enzyme based inhibitory methods were used to determine antidiabetic effect of neohesperidin. Alpha (α)-amylase inhibitory assay was performed using different sources i.e. wheat alpha (α)-amylase enzyme, salivary alpha (α)-amylase and fungal alpha (α)-amylase assay. Alpha (α)-glucosidase inhibitory assay was performed using alpha
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10

Vu, Phuong Thi Bach, Dai Minh Cao та Phuong Ngo Diem Quach. "Effects of some precursors and elicitors on the growth and α-glucosidase inhibitory activity of in vitro Urena lobata L. hairy roots". Science and Technology Development Journal - Natural Sciences 4, № 3 (2020): First. http://dx.doi.org/10.32508/stdjns.v4i3.902.

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Recent studies have demonstrated the potential of in vitro Urena lobata L. hairy roots to inhibit α-glucosidase for supporting the treatment of type 2 diabetes. To increase the productivities of hairy roots with α-glucosidase inhibitory activity in in vitro culture conditions, this study focus on the effects of some metabolic factors such as precursors (L-phenylalanine, L-tyrosine) and elicitors (chitosan, methyl jasmonate, salicylic acid). They were added to the culture media to investigate the growth and α-glucosidase inhibitory activity of Urena lobata L. hairy roots. The results showed tha
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11

Dong, Qi, Na Hu, Huilan Yue та Honglun Wang. "Inhibitory Activity and Mechanism Investigation of Hypericin as a Novel α-Glucosidase Inhibitor". Molecules 26, № 15 (2021): 4566. http://dx.doi.org/10.3390/molecules26154566.

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α-glucosidase is a major enzyme that is involved in starch digestion and type 2 diabetes mellitus. In this study, the inhibition of hypericin by α-glucosidase and its mechanism were firstly investigated using enzyme kinetics analysis, real-time interaction analysis between hypericin and α-glucosidase by surface plasmon resonance (SPR), and molecular docking simulation. The results showed that hypericin was a high potential reversible and competitive α-glucosidase inhibitor, with a maximum half inhibitory concentration (IC50) of 4.66 ± 0.27 mg/L. The binding affinities of hypericin with α-gluco
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12

Truong, Thang Quoc, Tho Huu Le, Minh Binh Nguyen та ін. "Study on α‐glucosidase inhibitory activity of isolated flavones from genus Artocarpus and their enzyme kinetics". Vietnam Journal of Chemistry 61, S2 (2023): 26–32. http://dx.doi.org/10.1002/vjch.202300049.

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AbstractFlavonoids are the major compounds associated with diverse bioactivities, especially with α‐glucosidase inhibitory activity related to diabetes mellitus. The study reported the α‐glucosidase inhibitory activity of seventeen flavonoids isolated from Artocarpus heterophyllus, Artocarpus rigida, and Artocarpus altilis. The results indicated that all flavones possessed an α‐glucosidase inhibitory effect, in which compounds 3, 5‐7, 9‐17 strongly inhibited α‐glucosidase enzyme with the IC50 value range from 1.5 to 6.4 μM. Based on their structure‐activity relationships, the prenylation patte
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13

Yang, Xinyu, Dan Wang, Yangyong Dai, Luping Zhao, Wentao Wang та Xiuzhen Ding. "Identification and Molecular Binding Mechanism of Novel α-Glucosidase Inhibitory Peptides from Hot-Pressed Peanut Meal Protein Hydrolysates". Foods 12, № 3 (2023): 663. http://dx.doi.org/10.3390/foods12030663.

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Hot-pressed peanut meal protein hydrolysates are rich in Arg residue, but there is a lack of research on their α-glucosidase inhibitory activity. In this study, different proteases were used to produce hot-pressed peanut meal protein hydrolysates (PMHs) to evaluate the α-glucosidase inhibitory activity. All PMHs showed good α-glucosidase inhibitory activity with the best inhibition effect coming from the dual enzyme system of Alcalase and Neutrase with an IC50 of 5.63 ± 0.19 mg/mL. The fractions with the highest inhibition effect were separated and purified using ultrafiltration and cation exc
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14

Giblin, Mary, Catherine T. Kelly та William M. Fogarty. "Thermostable α-glucosidase produced by Bacillus caldovelox DSM411". Canadian Journal of Microbiology 33, № 7 (1987): 614–18. http://dx.doi.org/10.1139/m87-107.

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Bacillus caldovelox produces an intracellular α-glucosidase (EC 3.2.1.20). It is the most thermostable microbial α-glucosidase reported to date and a number of its properties are outlined here. It was purified by treatment with protamine sulphate and gel filtration on Sephadex G-150 and gave a single band on SDS–PAGE. The enzyme had highest activity on p-nitrophenyl-α-D-glucoside, which was 2.04 times higher than the activity on maltose, and it was inactive towards isomaltose. It had a molecular weight of 30 000 and an isoelectric point of pH 5.0. The enzyme operated most efficiently at pH 5.5
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15

Ryu, BoMi, Yunfei Jiang, Hyun-Soo Kim та ін. "Ishophloroglucin A, a Novel Phlorotannin for Standardizing the Anti-α-Glucosidase Activity of Ishige okamurae". Marine Drugs 16, № 11 (2018): 436. http://dx.doi.org/10.3390/md16110436.

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Nutraceutical use of algae requires understanding of the diversity and significance of their active compositions for intended activities. Ishige okamurae (I. okamurae) extract is well-known to possess α-glucosidase inhibitory activity; however, studies are needed to investigate its active composition in order to standardize its α-glucosidase inhibitory activity. In this study, we observed the intensity of the dominant compounds of each I. okamurae extract harvested between 2016 and 2017, and the different potency of each I. okamurae extract against α-glucosidase. By comparing the anti-α-glucos
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16

Muhammad Alfarabi, Maria Bintang, Suryani, Mega Safithri та Waras Nurcholis. "Kinetics of α -glucosidase inhibitory activity and phytochemical analysis of Piper crocatum Ruiz & Pav. leaves ethanol extract". International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 2032–36. http://dx.doi.org/10.26452/ijrps.v11ispl4.4416.

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α-Glucosidase is an enzymes group that playing essential roles in the digestion of polysaccharide. Inhibitor of a-glucosidase can decrease polysaccharide digestion rate and therefore plays a significant function in preventing the development of diabetes (type 2). Piper crocatum Ruiz & Pav. is an essential herb applied traditionally in Indonesia to treat diabetes mellitus. This work evaluated the a-glucosidase inhibitory activity of P. crocatum leaves ethanol extract. Phytochemical component of the extract was also analyzed. The α-glucosidase inhibitory activity of the P. crocatum leaves et
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17

Daou, Mariane, Nancy A. Elnaker, Michael A. Ochsenkühn, Shady A. Amin, Ahmed F. Yousef та Lina F. Yousef. "In vitro α-glucosidase inhibitory activity of Tamarix nilotica shoot extracts and fractions". PLOS ONE 17, № 3 (2022): e0264969. http://dx.doi.org/10.1371/journal.pone.0264969.

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α-glucosidase inhibitors represent an important class of type 2 antidiabetic drugs and they act by lowering postprandial hyperglycemia. Today, only three synthetic inhibitors exist on the market, and there is a need for novel, natural and more efficient molecules exhibiting this activity. In this study, we investigated the ability of Tamarix nilotica ethanolic and aqueous shoot extracts, as well as methanolic fractions prepared from aqueous crude extracts to inhibit α-glucosidase. Both, 50% ethanol and aqueous extracts inhibited α-glucosidase in a concentration-dependent manner, with IC50 valu
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18

Bule, Mohammed Hussen, Roghaieh Esfandyari, Tadesse Bekele Tafesse, Mohsen Amini, Mohammad Ali Faramarzi та Mohammad Abdollahi. "Synthesis, Molecular Docking and α-Glucosidase Inhibitory Activity Study of 2,4,6-triaryl Pyrimidine Derivatives". Letters in Drug Design & Discovery 17, № 10 (2020): 1216–26. http://dx.doi.org/10.2174/1570180817666200103130536.

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Background: α-Glucosidase inhibitors hinder the carbohydrate digestion and play an important role in the treatment of diabetes mellitus. α-glucosidase inhibitors available on the market are acarbose, miglitol, and voglibose. However, the use of acarbose is diminishing due to related side effects like diarrhea, bloating and abdominal distension. Objectives: This study aimed to synthesize 2,4,6-triaryl pyrimidines derivatives, screen their α- glucosidase inhibitory activity, perform kinetic and molecular docking studies. Methods: A series of 2,4,6-triaryl pyrimidine derivatives were synthesized
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19

Rosa, Dela, Berna Elya, Muhammad Hanafi, Alfi Khatib та Muhammad Imam Surya. "In Vitro and In Silico Screening Analysis of Artabotrys sumatranus Leaf and Twig Extracts for α-Glucosidase Inhibition Activity and Its Relationship with Antioxidant Activity". Scientia Pharmaceutica 91, № 1 (2022): 2. http://dx.doi.org/10.3390/scipharm91010002.

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Artabotrys sumatranus is one of the Artabotrys species, which lives in Sumatera, Java, and Borneo in Indonesia. No research has been found related to its activity. The objective of this study was to explore the potential of A. sumatranus leaf and twig extracts as the source of an anti-diabetic agent through the α-glucosidase inhibition mechanism, as well as the relationship between the antioxidant and the α-glucosidase inhibition activities in these extracts. Ethanol extracts from leaf and twig A. sumatranus were subjected to several assays: total phenolic content, total flavonoid content, ant
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20

Yarizade, Adel, Hsan Hasani Kumle та Ali Niazi. "IN VITRO ANTIDIABETIC EFFECTS OF FERULA ASSA-FOETIDA EXTRACTS THROUGH DIPEPTIDYL PEPTIDASE IV AND α-GLUCOSIDASE INHIBITORY ACTIVITY". Asian Journal of Pharmaceutical and Clinical Research 10, № 5 (2017): 357. http://dx.doi.org/10.22159/ajpcr.2017.v10i5.16648.

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Objective: Diabetes mellitus (DM) causes hyperglycemia, which is one of the most common diseases in the world. One of the strategies for the treatment of diabetes is maintaining postprandial glucose level through inhibition of dipeptidyl peptidase IV (DPP-IV) and α-glucosidase enzymes. The aim of this study was to determine in vitro antidiabetic potential of Ferula assa-foetida via DPP-IV and α-glucosidase inhibitory activities.Methods: F. assa-foetida seeds were extracted in methanol, ethanol, ethanol-methanol, and water. Inhibitory activity on DPP-IV and α-glucosidase wasperformed in vitro a
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21

Shen, Xing, Wataru Saburi, Zuoqi Gai та ін. "Structural analysis of the α-glucosidase HaG provides new insights into substrate specificity and catalytic mechanism". Acta Crystallographica Section D Biological Crystallography 71, № 6 (2015): 1382–91. http://dx.doi.org/10.1107/s139900471500721x.

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α-Glucosidases, which catalyze the hydrolysis of the α-glucosidic linkage at the nonreducing end of the substrate, are important for the metabolism of α-glucosides.Halomonassp. H11 α-glucosidase (HaG), belonging to glycoside hydrolase family 13 (GH13), only has high hydrolytic activity towards the α-(1→4)-linked disaccharide maltose among naturally occurring substrates. Although several three-dimensional structures of GH13 members have been solved, the disaccharide specificity and α-(1→4) recognition mechanism of α-glucosidase are unclear owing to a lack of corresponding substrate-bound struct
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22

Shulgau, Zarina, Irina Palamarchuk, Shynggys Sergazy та ін. "Synthesis, Computational Study, and In Vitro α-Glucosidase Inhibitory Action of Thiourea Derivatives Based on 3-Aminopyridin-2(1H)-Ones". Molecules 29, № 15 (2024): 3627. http://dx.doi.org/10.3390/molecules29153627.

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Reactions with allyl-, acetyl-, and phenylisothiocyanate have been studied on the basis of 3-amino-4,6-dimethylpyridine-2(1H)-one, 3-amino-4-phenylpyridine-2-one, and 3-amino-4-(thiophene-2-yl)pyridine-2(1H)-one (benzoyl-)isothiocyanates, and the corresponding thioureide derivatives 8-11a-c were obtained. Twelve thiourea derivatives were obtained and studied for their anti-diabetic activity against the enzyme α-glucosidase in comparison with the standard drug acarbose. The comparison drug acarbose inhibits the activity of α-glucosidase at a concentration of 15 mM by 46.1% (IC50 for acarbose is
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23

Aguila-Muñoz, Dolores G., Gabriel Vázquez-Lira, Erika Sarmiento-Tlale та ін. "Synthesis and Molecular Docking Studies of Alkoxy- and Imidazole-Substituted Xanthones as α-Amylase and α-Glucosidase Inhibitors". Molecules 28, № 10 (2023): 4180. http://dx.doi.org/10.3390/molecules28104180.

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Current antidiabetic drugs have severe side effects, which may be minimized by new selective molecules that strongly inhibit α-glucosidase and weakly inhibit α-amylase. We have synthesized novel alkoxy-substituted xanthones and imidazole-substituted xanthones and have evaluated them for their in silico and in vitro α-glucosidase and α-amylase inhibition activity. Compounds 6c, 6e, and 9b promoted higher α-glucosidase inhibition (IC50 = 16.0, 12.8, and 4.0 µM, respectively) and lower α-amylase inhibition (IC50 = 76.7, 68.1, and >200 µM, respectively) compared to acarbose (IC50 = 306.7 µM for
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24

Venkatachalam, Suresh kumar Tirupur, SenthilKumar Palanisamy, Sudhagar Babu та Ranjithkumar Rajamani. "Assesment of free radical scavenging activity and inhibitory properties of aqueous extract of Cymodocea serrulata segrass towards α- glucosidase and α –amylase enzyme". Journal of University of Shanghai for Science and Technology 23, № 12 (2021): 339–60. http://dx.doi.org/10.51201/jusst/21/121035.

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Aim: The study reports the in vitro free radical scavenging and α-amylase and α-glucosidase inhibition activities of aqueous extract of seagrass Cymodocea serrulata from Gulf of Mannar, Southeast Asia. Methods: The free radical scavenging activity was evaluated by DPPH, Superoxide, Nitric oxide and Hydroxyl radical scavenging assays and α-amylase, α-glucosidase enzyme inhibitory activity. The C. serrulata showed effective DPPH radical scavenging activity of 69.45 μg/mL, Superoxide radical scavenging activity of 91.08.5 ± 0.02%, Nitric oxide radical scavenging activity of 86.89 ± 0.03% and Hydr
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25

Onu, Andrew, та Amina Rabe Musa. "<i>Khaya Senegalensis</i> inhibitory activity against α-glucosidase". Caliphate Journal of Science and Technology 6, № 3 (2024): 351–59. https://doi.org/10.4314/cajost.v6i3.12.

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α-glucosidase is an enzyme responsible for the hydrolysis of oligosaccharides to simple absorbable sugars. The inhibition of the enzyme is implicated in the management of postprandial hyperglycaemia. The current study evaluates the α-glucosidase inhibitory potentials of Khaya senegalensis stem bark. The result of an in vitro analysis using α-glucosidase from Saccharomyces cerevisiae and p-nitrophenyl α-D-glucopyranoside as substrate showed that the stem bark extract of K. senegalensis (IC50 = 7.7 ± 0.02 μg /ml), had a significant inhibitory effect on α-glucosidase in a concentration dependant
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26

Raamachandran, Jayaraman, та Arul Amuthan. "Neerizhivu kudineer (a traditional siddha polyherbal antidiabetic medicine) inhibits α- amylase enzyme and αglucosidase enzyme". Journal of Ayurvedic and Herbal Medicine 6, № 1 (2020): 21–25. http://dx.doi.org/10.31254/jahm.2020.6106.

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Objective: To investigate the α-amylase and α-glucosidases inhibitory activity of Neerizhivu kudineer (NK). Methods: The polyherbal formulation NK was prepared as per traditional Siddha medical literature and aqueous extract was taken. Invitro α-amylase and α-glucosidases inhibitory activity of NK was evaluated using various concentrations of NK. Acarbose was used as standard drug. The percent inhibition values were determined and the dose verses percent inhibition was plotted in MS excel. Using the linear trend line, the concentration required for 50% inhibition (IC50 value) were calculated.
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27

Lestari, Wening, Rizna Triana Dewi, Leonardus Broto Sugeng Kardono та Arry Yanuar. "Docking Sulochrin and Its Derivative as α-Glucosidase Inhibitors of Saccharomyces cerevisiae". Indonesian Journal of Chemistry 17, № 1 (2017): 144. http://dx.doi.org/10.22146/ijc.23568.

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Sulochrin is known to have an activity as inhibitors of the α-glucosidase enzyme. In this report interaction of sulochrin to the active site of the α-glucosidase enzyme from Saccharomyces cerevisiae was studied by docking method. The crystal structure of α-glucosidase from S. cerevisiae obtained from the homology method using α-glucosidase from S. cerevisiae (Swiss-Prot code P53341) as a target and crystal structure of isomaltase from S. cerevisiae (PDB code 3A4A) as a template. These studies show that sulochrin and sulochrin-I could be bound in the active site of α-glucosidase from S. cerevis
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Pujirahayu, Niken, Debu Kumar Bhattacharjya, Toshisada Suzuki та Takeshi Katayama. "α-Glucosidase Inhibitory Activity of Cycloartane-Type Triterpenes Isolated from Indonesian Stingless Bee Propolis and Their Structure–Activity Relationship". Pharmaceuticals 12, № 3 (2019): 102. http://dx.doi.org/10.3390/ph12030102.

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This study reports on the antioxidant activity and α-glucosidase inhibitory activity of five cycloartane-type triterpenes isolated from Indonesian stingless bee (Tetragonula sapiens Cockerell) propolis and their structure–activity relationships. The structure of the triterpenes was determined to include mangiferolic acid (1), Cycloartenol (2), ambonic acid (3), mangiferonic acid (4), and ambolic acid (5). The inhibitory test results of all isolated triterpenes against α-glucosidase showed a high potential for inhibitory activity with an IC50 range between 2.46 and 10.72 µM. Among the compounds
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29

Nkobole, Nolitha, Peter James Houghton, Ahmed Hussein, and Namrita Lall. "Antidiabetic Activity of Terminalia sericea Constituents." Natural Product Communications 6, no. 11 (2011): 1934578X1100601. http://dx.doi.org/10.1177/1934578x1100601106.

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Diabetes mellitus is an endocrine disorder that affects more than 100 million people worldwide. South African plants namely Terminalia sericea, Euclea natalensis, Warbugia salutaris, Aloe ferox, Artemisia afra, Sclerocarya birrea, Spirostachys africana and Psidium guajava were investigated for their in vitro α-glucosidase and α-amylase properties, and antioxidant activities. Terminalia sericea stem bark extract showed the best results against α-glucosidase and α-amylase enzymes. Bioassay-guided fractionation of an acetone extract of T. sericea stem bark led to the isolation of four known compo
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30

Srisongkram, Tarapong, Sasisom Waithong, Thaweesak Thitimetharoch та Natthida Weerapreeyakul. "Machine Learning and In Vitro Chemical Screening of Potential α-Amylase and α-Glucosidase Inhibitors from Thai Indigenous Plants". Nutrients 14, № 2 (2022): 267. http://dx.doi.org/10.3390/nu14020267.

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Diabetes mellitus is a major predisposing factor for cardiovascular disease and mortality. α-Amylase and α-glucosidase enzymes are the rate-limiting steps for carbohydrate digestion. The inhibition of these two enzymes is clinically used for the treatment of diabetes mellitus. Here, in vitro study and machine learning models were employed for the chemical screening of inhibiting the activity of 31 plant samples on α-amylase and α-glucosidase enzymes. The results showed that the ethanolic twig extract of Pinus kesiya had the highest inhibitory activity against the α-amylase enzyme. The respecti
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31

Saleh, Mohammed S. M., Mohammad Jamshed Siddiqui, Nabil Ali Al-Mekhlafi, et al. "Gas Chromatography-Mass Spectrometry Coupled with Multivariate Statistical Analysis to Identify the Alpha Glucosidase Inhibitors from Flesh of Salacca zalacca Fruits and Their Molecular Docking Studies." Evidence-Based Complementary and Alternative Medicine 2021 (January 25, 2021): 1–10. http://dx.doi.org/10.1155/2021/8867773.

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Fruit of salak (Salaaca zalacca) is traditionally used and commercialized as an antidiabetic agent. However, scientific evidence to prove this folk claim is quite lacking. Therefore, this research was aimed to evaluate the α-glucosidase inhibition activity of S. zalacca fruit and identify the bioactive compounds. The fruits were extracted by different ratios of ethanol and water (0, 20, 40, 60, 80, 100%, v/v) to get E0 (100% water), E20 (20% ethanol), E40 (40% ethanol), E60 (60% ethanol), E80 (80% ethanol), and E100 (100% ethanol) extracts. The extracts obtained were subjected to the α-glucosi
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AlKhaldi, Kholowd, Manal Daghestani, and Thanaa Al-Haddad. "In vitro anti-diabetic activity of Tribulus terrestrisL. fruits extracts." Nutrition & Food Science 50, no. 4 (2019): 631–40. http://dx.doi.org/10.1108/nfs-06-2019-0180.

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Purpose The purpose of this paper is to evaluate the inhibition activity of Tribulus terrestris L. (T. terrestris) fruits extracts with solvents of increasing polarity against α-glucosidase and α-amylase, and to determine the inhibition mode of the most effective extract against both enzymes. Design/methodology/approach Hexane, acetone, ethanol and aqueous extracts of T. terrestris fruits were prepared using ultrasonic sequential extraction and analyzed for their α-amylase and α-glucosidase inhibitory activities by specific assay for each enzyme. The modes of inhibitions were detected using Li
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Djeujo, Francine Medjiofack, Valeria Francesconi, Maddalena Gonella, Eugenio Ragazzi, Michele Tonelli та Guglielmina Froldi. "Anti-α-Glucosidase and Antiglycation Activities of α-Mangostin and New Xanthenone Derivatives: Enzymatic Kinetics and Mechanistic Insights through In Vitro Studies". Molecules 27, № 2 (2022): 547. http://dx.doi.org/10.3390/molecules27020547.

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Diabetes mellitus is characterized by chronic hyperglycemia that promotes ROS formation, causing severe oxidative stress. Furthermore, prolonged hyperglycemia leads to glycation reactions with formation of AGEs that contribute to a chronic inflammatory state. This research aims to evaluate the inhibitory activity of α-mangostin and four synthetic xanthenone derivatives against glycation and oxidative processes and on α-glucosidase, an intestinal hydrolase that catalyzes the cleavage of oligosaccharides into glucose molecules, promoting the postprandial glycemic peak. Antiglycation activity was
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34

Machida, Shota, Saki Mukai, Rina Kono, Megumi Funato, Hiroaki Saito та Taketo Uchiyama. "Synthesis and Comparative Structure–Activity Study of Carbohydrate-Based Phenolic Compounds as α-Glucosidase Inhibitors and Antioxidants". Molecules 24, № 23 (2019): 4340. http://dx.doi.org/10.3390/molecules24234340.

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Twenty-one natural and unnatural phenolic compounds containing a carbohydrate moiety were synthesized and their structure–activity relationship (SAR) was evaluated for α-glucosidase inhibition and antioxidative activity. Varying the position of the galloyl unit on the 1,5-anhydro-d-glucitol (1,5-AG) core resulted in changes in the α-glucosidase inhibitory activity and notably, particularly strong activity was demonstrated when the galloyl unit was present at the C-2 position. Furthermore, increasing the number of the galloyl units significantly affected the α-glucosidase inhibition, and 2,3,4,
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35

Nguyen, Han T. "Alpha-glucosidase inhibitory activity of some brown seaweeds collected in Nha Trang bay, Khanh Hoa province." Journal of Agriculture and Development 19, no. 02 (2020): 90–98. http://dx.doi.org/10.52997/jad.11.02.2020.

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Diabetes has become a global problem in recent years. Inhibition of α-glucosidase is one of the effective approaches to control the postprandial blood glucose and thereby managing diabetes. This study evaluated inhibitory activity of seven brown seaweed extracts (Colpomenia sinuosa, Padina australis, Sargassum aquifolium, Sargassum mcclurei, Sargassum duplicatum, Sargassum polycystum and Sargassum swartzi) against α-glucosidase. The results indicated that all seaweed extracts inhibited enzyme activity with the IC50 values ranging from 154.27 to 426.27 μg/mL. The seaweed Sargassum mcclurei show
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36

Gondokesumo, Marisca Evalina, Hanna Sari Widya Kusuma та Wahyu Widowati. "α-/β-Glucosidase and α-Amylase Inhibitory Activities of Roselle (Hibiscus sabdariffa L.) Ethanol Extract". Molecular and Cellular Biomedical Sciences 1, № 1 (2017): 34. http://dx.doi.org/10.21705/mcbs.v1i1.3.

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Background: Diabetes mellitus is a metabolic disease, characterized by hyperglycemia due to disturbance in both insulin secretion and function. One of theurapeutic approaches is to reduce blood glucose levels by inhbiting α-/β-glucosidase and α-amylase involved in carbohydrate digestion. Thus, inhibition of these enzymes play important role in the treatment of diabetes mellitus. Roselle (Hibiscus sabdariffa L.) has been known to have several medicinal properties and potency as an antidiabetics agents. This reseacrh aimed to observe antidiabetic properties of roselle ethanol extract (REE) towar
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Salehi, Albert, Henrik Mosén та Ingmar Lundquist. "Insulin release transduction mechanism through acid glucan 1,4-α-glucosidase activation is Ca2+ regulated". American Journal of Physiology-Endocrinology and Metabolism 274, № 3 (1998): E459—E468. http://dx.doi.org/10.1152/ajpendo.1998.274.3.e459.

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An important signal involved in glucose-stimulated insulin secretion is transduced through the action of a lysosomal acid, glucan 1,4-α-glucosidase. We investigated the Ca2+ dependency of this enzyme activity in relation to insulin release. In isolated islets, increased levels of extracellular Ca2+induced a large increase in acid glucan 1,4-α-glucosidase activity accompanied by a similar increase in insulin release at both substimulatory and stimulatory concentrations of glucose. At low glucose the Ca2+ “inflow” blocker nifedipine unexpectedly stimulated enzyme activity without affecting insul
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Lee, Soo-Yeon, Jeung-Hoan Kim, Jung-Mi Park, In-Chul Lee та Jin-Young Lee. "Antioxidant activity and inhibition activity against α-amylase and α-glucosidase of Smilax China L." Korean Journal of Food Preservation 21, № 2 (2014): 254–63. http://dx.doi.org/10.11002/kjfp.2014.21.2.254.

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39

Dutta, Subhajit, C. Ramesh, A. Madhu, Krishna Pundi, and B. A. Sowmya. "The ethanol extract of Muntingia calabura exhibits in vitro antidiabetic potentials by inhibiting carbohydrate digestive enzymes." Journal of Drug Delivery and Therapeutics 13, no. 11 (2023): 26–30. http://dx.doi.org/10.22270/jddt.v13i11.6276.

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Objective: The present research study was conducted to investigate in vitro anti-diabetic potentials of ethanol extract of leaves of Muntingia calabura for α-glucosidase and α-amylase inhibitory activities.&#x0D; Materials &amp; Methods: The leaves of Muntingia calabura were collected and authenticated. dried and powdered. The powdered drug was defatted using petroleum ether and extracted with ethanol. The ethanol extract of Muntingia calabura was subjected to preliminary phytochemical investigation. The in vitro α-glucosidase inhibitory and α-amylase inhibitory properties were determined for
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40

Shen, Beiyun, Xinchen Shangguan, Zhongping Yin та ін. "Inhibitory Effect of Fisetin on α-Glucosidase Activity: Kinetic and Molecular Docking Studies". Molecules 26, № 17 (2021): 5306. http://dx.doi.org/10.3390/molecules26175306.

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The inhibition of α-glucosidase is a clinical strategy for the treatment of type 2 diabetes mellitus (T2DM), and many natural plant ingredients have been reported to be effective in alleviating hyperglycemia by inhibiting α-glucosidase. In this study, the α-glucosidase inhibitory activity of fisetin extracted from Cotinus coggygria Scop. was evaluated in vitro. The results showed that fisetin exhibited strong inhibitory activity with an IC50 value of 4.099 × 10−4 mM. Enzyme kinetic analysis revealed that fisetin is a non-competitive inhibitor of α-glucosidase, with an inhibition constant value
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Puspitasari, Yunita Eka, Emmy Tuenter, Annelies Breynaert та ін. "α-Glucosidase Inhibitory Activity of Tea and Kombucha from Rhizophora mucronata Leaves". Beverages 10, № 1 (2024): 22. http://dx.doi.org/10.3390/beverages10010022.

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A decoction of Rhizophora mucronata Lam. mangrove bark is used as an antidiabetic treatment in Asia. Kombucha tea is a fermented beverage, which is also claimed to be antidiabetic. In this work, the potency of R. mucronata leaves as α-glucosidase inhibitor was studied to assess whether it could be a suitable alternative to the use of R. mucronata bark. α-glucosidase inhibitory activities were determined for three extracts prepared from R. mucronata leaves, being the unfermented tea of R. mucronata leaves, the fermented kombucha tea and an 80% methanolic extract of the residual R. mucronata lea
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Purnomo, Yudi, Juliah Makdasari, and Faiqoh Inayah Fatahillah. "Inhibitory activity of Urena lobata leaf extract on alpha-amylase and alpha-glucosidase: in vitro and in silico approach." Journal of Basic and Clinical Physiology and Pharmacology 32, no. 4 (2021): 889–94. http://dx.doi.org/10.1515/jbcpp-2020-0430.

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Abstract Objectives In food ingestion, alpha-glucosidase (α-glucosidase) and alpha-amylase (α-amylase) are enzymes that are responsible to convert a carbohydrate into glucose. Inhibition of both enzyme activities can prolong absorption of glucose in intestine and reduce post-prandial increase of blood glucose concentration, thus, it is beneficial for type-2 diabetes treatment. Traditionally, Urena lobata (U. lobata) has been used to manage diabetes, but the scientific proof of this claim remains scarce. Therefore, the objective of this study to examine the anti-diabetic potential of U. lobata
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Lu, Han, Tiantian Xie, Qi Wu, Zuomin Hu, Yi Luo, and Feijun Luo. "Alpha-Glucosidase Inhibitory Peptides: Sources, Preparations, Identifications, and Action Mechanisms." Nutrients 15, no. 19 (2023): 4267. http://dx.doi.org/10.3390/nu15194267.

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With the change in people’s lifestyle, diabetes has emerged as a chronic disease that poses a serious threat to human health, alongside tumor, cardiovascular, and cerebrovascular diseases. α-glucosidase inhibitors, which are oral drugs, have proven effective in preventing and managing this disease. Studies have suggested that bioactive peptides could serve as a potential source of α-glucosidase inhibitors. These peptides possess certain hypoglycemic activity and can effectively regulate postprandial blood glucose levels by inhibiting α-glucosidase activity, thus intervening and regulating diab
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Zhang, Xiaoling, Yitong Wang, Tiantian Zhang, Ziqiao Yuan та Yongjun Wei. "Efficient Biotransformation of Icariin to Baohuoside I Using Two Novel GH1 β-Glucosidases". Molecules 29, № 22 (2024): 5280. http://dx.doi.org/10.3390/molecules29225280.

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Epimedium Folium (EF) is a traditional Chinese herbal medicine, and its primary bioactive ingredients, such as icariin, are flavonoid glycosides. A rare EF flavonoid, baohuoside I, exhibits superior bioactivities and enhanced bioavailability compared to its metabolic precursor icariin. The biotransformation of icariin to baohuoside I can be effectively and specifically achieved by β-glucosidases. In this study, 33 candidate full-length β-glucosidase genes were screened from a previously built carbohydrate active enzyme (CAZyme) gene dataset derived from cow fecal microbiota. Thirteen of them e
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Mahayasih, Putu G. M. W., Muhammad Hanafi, Yonatan Eden, Dimas Maulana, Nita Triadisti та Berna Elya. "A xanthone from Garcinia lateriflora Blume leaves extract: Isolation, α-glucosidase inhibitory activity, and antioxidant capacity". Journal of Pharmacy & Pharmacognosy Research 13, № 4 (2025): 1275–87. https://doi.org/10.56499/jppres24.2178_13.4.1275.

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Context: The leaf extracts of Garcinia lateriflora have activity as α-glucosidase inhibitor and antioxidant. α-glucosidase inhibitor is one of the mechanisms that can treat type 2 diabetic mellitus (T2DM). Aims: To isolate and identify the molecule responsible for the antioxidant activities and α-glucosidase enzyme inhibition of G. lateriflora leaf extract. Methods: The leaves of G. lateriflora were progressively extracted using the maceration method with n-hexane (He), ethyl acetate (EA), and methanol (Me). The isolation procedure used column chromatography, employing the stationary phase of
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Rafael, Siahaan, I. Made Artika та Waras Nurcholis. "Antioxidant activity and inhibition of α-glucosidase from extract and fraction of leaves and stems of Vernonia amygdalina". International Journal of Advances in Applied Sciences 12, № 3 (2023): 274. http://dx.doi.org/10.11591/ijaas.v12.i3.pp274-284.

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Previous studies have shown that bitter leaf (&lt;em&gt;Vernonia amygdalina&lt;/em&gt; Del.) has the ability as an antioxidant and an α-glucosidase inhibitor. Still, the difference in antioxidant activity and α-glucosidase inhibition based on the leaves and stems parts have not yet been determined. The effect of flavonoid-enriched extract on antioxidant activity and inhibition of α-glucosidase has not yet been determined. This research aimed to assess the impact of flavonoid-enriched extract from the leaves and stems part of the bitter leaf. The leaves and stems part of the bitter leaf were ex
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Addina, S., and E. S. Harahap. "Alpha-glucosidase inhibitory activity of Balakka (Phyllanthus emblica) bark and fruit." IOP Conference Series: Earth and Environmental Science 1413, no. 1 (2024): 012087. https://doi.org/10.1088/1755-1315/1413/1/012087.

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Abstract The increased blood glucose level as a consequence of insufficient insulin synthesis or ineffective insulin use is a degenerative disease known as diabetes mellitus. Prevention involves inhibiting the α-glucosidase enzyme, which hydrolyzes carbohydrates into glucose. The Balakka plant (Phyllanthus emblica Linn.), growing in South Tapanuli, potentially inhibits α-glucosidase due to its bioactive compounds. This study examined the sustainability of functional food potential by analyzing the inhibitory effect of Palakkad bark and fruit extracted using N-hexane and ethanol on the α-glucos
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Pallerla, Praneetha, and Harshitha Posani. "IN-VITRO ANTIDIABETIC ACTIVITY OF STANDARDIZED ACAIBERRY EXTRACT." Journal of Advanced Scientific Research 13, no. 06 (2022): 41–45. http://dx.doi.org/10.55218/jasr.202213607.

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In the present study, the standardized Acaiberry extract was studied for in-vitro antidiabetic activity. The aim of this work was to evaluate the inhibitory activities of the methanolic extract of standardized Euterpe oleracea (Acai berry) of family Arecaceae, at different concentrations. Diabetes is a severe, metabolic disorder characterized by increased levels of glucose that circulates in the blood plasma. Alpha amylase and alpha glucosidase inhibitors are used to achieve greater control over hyperglycemia in type 2 diabetes mellitus. The present study intends to screen alpha amylase and al
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Yuan, Hao, Hong Wan, Yi-Kao Hu та ін. "Fishing of α-Glucosidase’s Ligands from Aloe vera by α-Glucosidase Functionalized Magnetic Nanoparticles". Molecules 26, № 19 (2021): 5840. http://dx.doi.org/10.3390/molecules26195840.

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α-Glucosidase was immobilized on magnetic nanoparticles (MNPs) for selective solid-phase extraction of the enzyme’s ligands present in Aloe vera, which is a medicinal plant used for the treatment of various diseases and possesses anti-diabetic activity. One new compound, aloeacone (2), together with two known compounds, aloenin aglycone (1) and aloin A (3), were fished out as the enzyme’s ligands. The structure of 2 was determined by HR-MS and comprehensive NMR techniques. Compound 3 exhibited a weak inhibitory effect on α-glucosidase, while compounds 1 and 2 were found to possess activation e
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Nokhala, Ahmed, Mohammad Jamshed Siddiqui, Qamar Uddin Ahmed, Muhammad Safwan Ahamad Bustamam та Zainul Amiruddin Zakaria. "Investigation of α-Glucosidase Inhibitory Metabolites from Tetracera scandens Leaves by GC–MS Metabolite Profiling and Docking Studies". Biomolecules 10, № 2 (2020): 287. http://dx.doi.org/10.3390/biom10020287.

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Stone leaf (Tetracera scandens) is a Southeast Asian medicinal plant that has been traditionally used for the management of diabetes mellitus. The underlying mechanisms of the antidiabetic activity have not been fully explored yet. Hence, this study aimed to evaluate the α-glucosidase inhibitory potential of the hydromethanolic extracts of T. scandens leaves and to characterize the metabolites responsible for such activity through gas chromatography–mass spectrometry (GC–MS) metabolomics. Crude hydromethanolic extracts of different strengths were prepared and in vitro assayed for α-glucosidase
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