scholarly journals Antioxidant and hypoglycemic activities of various solvent fractions of methanol extract of Terminalia alata Heyne ex Roth trunk-bark

2021 ◽  
Vol 20 (1) ◽  
pp. e748
Author(s):  
Vinh Nguyen Quang ◽  
Pham Van Hung ◽  
Anh Dzung Nguyen
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Methanol Extract ◽  
Fasting Blood Glucose ◽  
Radical Scavenging ◽  
Diabetic Rats ◽  
Dpph Radical ◽  
Ic50 Values ◽  
Phenolics Content ◽  
Dpph Radical Scavenging

The antioxidant and hypoglycemic capacities of various solvent fractions from the trunk-bark methanol extract of Terminalia alata Heyne ex Roth (T. alata) were investigated. The DPPH radical scavenging assay was used to evaluate the antioxidant activity, and the methods for determination of digestive enzymes inhibitory activity and fasting blood glucose reduction capacity in diabetic rats were used to determine the hypoglycemic activity of the extract fractions. The results indicated that higher total phenolics content was measured with increasing polarity of extraction solvent and DPPH radical scavenging activity coincided with phenolics content. Ethyl acetate fraction (EAF), n-butanol fraction (BF), and water fraction (WF) were obtained. They possessed α-amylase inhibition with the IC50 values of 0.056 ± 0.001, 0.138 ± 0.005, and 0.022 ± 0.001 mg.mL-1, respectively, which were lower than acarbose (IC50 = 0.154 ± 0.02 mg.mL-1). In contrast, IC50 values of α-glucosidase inhibitory activities of these fractions were higher than those of acarbose. In addition, these fractions also lowered fasting blood glucose concentrations in streptozotocin induced diabetic rats at a dose of 200 mg.kg-1 bw (body weight) without inducing body weight loss, which was not observed when treating with acarbose. The EAF and WF of trunk-bark of T. alata are recommended as potent sources for further research on antioxidant and hypoglycemic activities.

scholarly journals Phytochemical Screening and Evaluation of Antimicrobial and Antioxidant Activity of Mahonia napaulensis (Jamanemandro) Bark Extract

2021 ◽  
Vol 19 (2) ◽  
pp. 55-61
Author(s):  
Ranjan Paudel ◽  
Rabi Kiran Sharma ◽  
Shreeya Bhandari ◽  
Manan Koirala ◽  
Ganesh Bhandari ◽  
...  
Keyword(s):  
Methanol Extract ◽  
Methanolic Extract ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Diffusion Method ◽  
Maximum Effect ◽  
Phytochemical Screening ◽  
Dpph Radical ◽  
Ic50 Values ◽  
Dpph Radical Scavenging

Mahonia napaulensis also known as “Jamanemandro” in Nepali is a medium-sized stiff evergreen shrub widely distributed in South East Asia at an altitude of 1000-2000m, is traditionally used to treat dysentery and eye inflammation. This research focuses on screening of the phytochemicals, antimicrobial, and antioxidant properties of this plant. The methanolic extract was prepared using a Soxhlet apparatus. The antioxidant properties of extract were carried out by 50% inhibitory concentration (IC50) values from 2-2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging. The phytochemical screening confirmed the presence of terpenoids, reducing sugars, tannins, alkaloids, glycosides including cardiac glycosides and steroids. The antimicrobial activity was studied using the disc diffusion method in five different human pathogens named Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella typhi, and Shigella spps. The methanol extract was compared with standard chloramphenicol and showed that methanolic extract of is M.napaulensis exhibit maximum effect against S. aureus with higher growth inhibition zones (27.3 mm), followed by P. aeruginosa, Shigella spps., E. coli and S. typhi. These antimicrobial properties showed similar effect to that of positive control, chloramphenicol. The IC50 values from DPPH radical scavenging were 230.89 µg/mL and 182.73 µg/mL of methanol extract and ascorbic acid, respectively. Due to this antimicrobial and antioxidant properties of M. napaulensis it was widely applicable in biomedical field.

scholarly journals Hypoglycemic and Hypolipidemic Effect of Methanol Extract of Hibiscus Sabdariffa Seed in Alloxan Induced Diabetic Albino Rats

2020 ◽  
Vol 27 (2) ◽  
pp. 151-156
Author(s):  
F.S. Adefolalu ◽  
J.S. Salawa ◽  
T.Y. Gara ◽  
A.N. Abubakar
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Acute Toxicity ◽  
Methanol Extract ◽  
Fasting Blood Glucose ◽  
Diabetic Rats ◽  
High Density Lipoproteins ◽  
Albino Rats ◽  
Hypolipidemic Effect ◽  
Hibiscus Sabdariffa

This study investigated the hypoglycemic and hypolipidemic effect of the oral administration of methanol extract of Hibiscus sabdariffa seed in alloxan induced diabetic albino rats. Two different doses (200 and 400 mg/kg) of the methanol extract of Hibiscus sabdariffa seed were administered daily to two groups of diabetic rats for a period of two weeks. Metformin (250 mg/kg) was given as the reference standard drug. Phytochemical, acute toxicity, fasting blood glucose, body weight, cholesterol, triglycerides and lipoproteins levels were determined using standard methods. Acute toxicity of methanol extract of Hibiscus sabdariffa seed was estimated to be greater than 5000 mg/kg body weight. There was an initial decrease in the body weight of the experimental animals after induction of diabetes which increased significantly (p<0.05) by the second week of treatment. The fasting blood glucose levels of the treated diabetic rats were significantly decreased at the second week of treatment with the group that received 400 mg/kg of extract recording the lowest fasting blood glucose level. The cholesterol, triglycerides and low density lipoproteins levels of the diabetic treated rats were significantly reduced while the high density lipoproteins level significantly increased. It can therefore be concluded that Hibiscus sabdariffa seed has the ability to lower blood sugar and maintain a stable lipid level. Keywords: Hypoglycemic, hypolipidemic, Alloxan, Phytochemical, Hibiscus sabdariffa

scholarly journals A simple new method for aged seed utilization based on melatonin-mediated germination and antioxidant nutrient production

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Song Yu ◽  
Xuetian Zhu ◽  
Helin Yang ◽  
Lihe Yu ◽  
Yifei Zhang
Keyword(s):  
Total Phenolics ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Dpph Radical ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Aged Seed ◽  
Phenolics Content ◽  
Dpph Radical Scavenging ◽  
Aged Seeds

AbstractSeed deterioration, coupled with a decrease in nutrients, is unavoidable following long-term storage, and these seeds are therefore used as livestock fodder. Here, we developed a simple, rapid and efficient method of producing high amounts of antioxidants from deteriorated seeds via melatonin-induced germination. Legume seeds were subjected to high humidity at 55 °C for 12–36 h to obtain aged seeds with a 40% germination rate and severely reduced antioxidant nutrition (total phenolics content, ferric reducing power and 1,1-diphenyl-2-picryhydrazyl (DPPH) radical scavenging capacity). Aged seeds were then treated with 0.1 mM melatonin, resulting in the production of sprouts with a higher total phenolics content (fivefold), greater ferric reducing power (sevenfold) and greater DPPH radical scavenging capacity (twofold) compared to the aged seeds. These findings suggest that melatonin treatment efficiently converted aged seed reserve residues into antioxidant nutrients, providing an alternative use for deteriorated seeds in food production.

STUDY OF ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF SAXICOLOUS LICHEN $ \textit{XANTHOPARMELIA STENOPHYLLA} $

2020 ◽  
Vol 54 (2 (252)) ◽  
pp. 132-137
Author(s):  
A.G. Simonyan ◽  
R.R. Sargsyan ◽  
H.H. Panosyan ◽  
A.H. Trchounian
Keyword(s):  
Methanol Extract ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Gram Positive Bacteria ◽  
Acetone Extracts ◽  
Dpph Radical Scavenging

Antibacterial and antioxidant activities of different extracts of saxicolous lichen Xanthoparmelia stenophylla sampled from Norashen, Gegharkunik Province of Armenia were studied. Methanol, ethanol and acetone extracts of lichen thalli were demonstrated to have activity against only tested gram-positive bacteria. Methanol extract of the lichen showed the highest amount of DPPH radical scavenging activity (~68%). Our studies did not reveal any significant antibacterial and antioxidant activities of aqueous extract.

scholarly journals HYPOGLYCEMIC EFFECT OF ANDROGRAPHIS ECHIOIDES ON STREPTOZOTOCIN INDUCED EXPERIMENTAL RATS

2015 ◽  
Vol 7 ◽  
pp. 55
Author(s):  
Mani Rupeshkumar ◽  
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Wistar Rats ◽  
Methanol Extract ◽  
Fasting Blood Glucose ◽  
Hypoglycemic Effect ◽  
Reference Drug ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Single Intraperitoneal Injection

The present study aims to study the hypoglycemic effect of methanol extract of Andrographisechioides (MEAE) in streptozotocin (STZ)-induced diabetic Wistar rats. Hyperglycemia was induced in rats by single intraperitoneal injection of STZ (55 mg/kg bodyweight). Three days after STZ induction, the hyperglycemic rats were treated with MEAE orally at the doses of 200, 500, and 800 mg/kg body weight daily for 21 days. Glibenclamide (1 mg/kg, orally) was used as reference drug. The fasting blood glucose levels were measured on each 7th day during the 21 days of treatment.

scholarly journals Determination of Antioxidant Activity and Total Tannin from Drumstick (Moringa oleifera Lam.) Leaves Using Different Solvent Extraction Methods

2020 ◽  
Vol 8 (12) ◽  
pp. 2749-2755
Author(s):  
Mohammad Afzal Hossain ◽  
Nadia Khan Disha ◽  
Jahid Hasan Shourove ◽  
Pappu Dey
Keyword(s):  
Antioxidant Activity ◽  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Tannin Content ◽  
Dpph Radical Scavenging Activity ◽  
Dpph Radical Scavenging

This study was undertaken to estimate the antioxidant activity and total tannin content of Moringa olifera Lam. (Moringa) leaves and find a suitable extraction condition for maximum yield. Two types of solvent and three different extraction times and temperatures were experimented for extraction. Moringa leaves were oven-dried and powdered to determine the antioxidant activity in terms of total phenolic content (TPC), ferric reducing antioxidant power (FRAP), and DPPH radical scavenging activity and total tannin content. The maximum TPC value noted in methanol extract, and it ranges from 6.46 ± 0.34 g to 3.91±0.19 g gallic acid equivalent (GAE)/100g dry sample (DM). The FRAP values varied from 211.6 ± 3.75 to 344.13 ± 3.26 mg ascorbic acid equivalent (AAE)/100g DM and 166.67 ± 2.90 to 224.93 ± 1.94 mg AAE/100g DM, for methanol and ethanol extract, respectively. The DPPH radical scavenging activity ranged from 46.32 ± 1.07 to 58.09 ± 0.92% for methanol extract and 56.76 ± 1.48% to 69.72 ± 1.15% for ethanol extract. The total tannin content varied from 6.84 ± 0.05 to 10.22 ± 1.11 mg GAE/100 g dry sample and 6.77 ± 0.08 to 9.23 ± 0.51 mg GAE/ 100g DMfor methanol and ethanol extract, respectively. The highest antioxidant yield for methanol and ethanol extract of Moringa leaves differed for various conditions. Overall, Moringa leaves showed excellent antioxidant properties that can be commercially and domestically used.

scholarly journals Hypoglycaemic and Hypolipidemic Effects of Treculia africana Aqueous Leaves Extract in Alloxan Induced Diabetic Rats

2018 ◽  
pp. 1-9
Author(s):  
Idris A. Kankara ◽  
Gayus A. Paulina ◽  
M. Aliyu
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Total Cholesterol ◽  
Ldl Cholesterol ◽  
Fasting Blood Glucose ◽  
Hdl Cholesterol ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Albino Rats ◽  
Treculia Africana

This study investigated the hypoglycaemic and hypolipidaemic effects of Treculia africana plant used in Nigeria as medicinal plant. Diabetes mellitus was induced by a single dose intraperitoneal injection of alloxan 150 mg/kg body weight. Twenty five (25) male albino rats were divided into five groups, five (5) rats per group; normal control, diabetic control and diabetic groups treated with aqueous leaves extract of 200,400 and 800 mg/Kg body weight respectively for 21 days orally. The effects of the extract on some biochemical parameters were evaluated; fasting blood glucose level was assayed using glucose oxidase method, total cholesterol and HDL –cholesterol were assayed using enzymatic method while LDL- cholesterol was determined by Friedewald equation. The results showed that, extract significantly (p<0.05) decrease the elevated fasting blood glucose levels, total cholesterol, triglyceride and LDL- cholesterol when compared with the diabetic control rats. The extract also caused significant (p<0.05) increased in HDL –cholesterol and body weight when compared with diabetic control rats. Aqueous leave extract of Treculia africana possess hypoglycemic effect and the most effective dose was 800 mg/Kg body weight in amelioration of hyperglycaemia and most all toxicity effects of alloxan on lipid profile.

scholarly journals Evaluation of Antidiarheal and Antidiabetic Activities of Wrigthia arborea (Dennst.) Mabb.

2015 ◽  
Vol 16 (2) ◽  
pp. 211-216
Author(s):  
Ronok Zahan ◽  
Laizuman Nahar ◽  
Zahangir Alam ◽  
Mst Luthfun Nesa ◽  
M Ekramul Haque
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Castor Oil ◽  
Methanol Extract ◽  
Pharmaceutical Journal ◽  
Diabetic Rats ◽  
Deciduous Tree ◽  
Elevated Blood ◽  
Antidiabetic Effect ◽  
Elevated Blood Glucose Level

Wrigthia arborea (Dennst.) Mabb., locally known as Shet-kurchi, is a small deciduous tree. These species are important in the traditional healthcare, especially in menstrual and renal complaints. The present study was designed to investigate the antidiarheal and antidiabetic activities of methanol extract of W. arborea. The methanol extract was studied for antidiarrhoeal properties using castor oil and magnesium sulphate induced diarrhoeal model in mice. At the doses of 100 and 200 mg/kg body weight, the extract reduced the frequency and severity of diarrhea in test animals throughout the study period. Antidiabetic effect was also evaluated in normal and alloxan induced diabetic rats. Considerable drop of elevated blood glucose level was observed in the normoglycemic and alloxan induced diabetic rats at a dose of 150 and 300 mg/kg b.w. when the extract was given intraperitoneally. Altogether, these results suggest that the methanol extract could be used for treating diarrhea and diabetes. This is the first report of antidiarheal and antidiabetic potential of W. arborea. DOI: http://dx.doi.org/10.3329/bpj.v16i2.22306 Bangladesh Pharmaceutical Journal 16(2): 211-216, 2013

scholarly journals ANTIHYPERGLYCEMIC AND ANTIOXIDATIVE EFFECTS OF LYGODIUM MICROPHYLLUM IN ALLOXAN INDUCED DIABETIC RATS

2018 ◽  
Vol 10 (12) ◽  
pp. 75
Author(s):  
D. G. Syahidah Nadiah Binti Abdull Majid ◽  
Mohammad Iqbal
Keyword(s):  
Oxidative Stress ◽  
Body Weight ◽  
Blood Glucose ◽  
Fasting Blood Glucose ◽  
Diabetic Rats ◽  
Control Group ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Antioxidative Effects ◽  
And Oxidative Stress

Objective: The antihyperglycemic and antioxidative effects of L. microphyllum were evaluated by using in vivo methods in normal and alloxan induced diabetic rats.Methods: Diabetes was induced in Sprague Dawley rats by injecting alloxan through intravenous (i. v) at a dose of 100 mg/kg of body weight. Aqueous extract of L. microphyllum at different doses (400, 200 and 100 mg/kg of body weight) was administered orally (orogastric intubation) for 14 d. Blood glucose and oxidative stress markers were measured. Hematoxylin and eosin staining method were used to examine the pancreatic tissues.Results: At the 14 d interval, fasting blood glucose showed a reduction in serum glucose levels in animals pretreated with L. microphyllum compared with alloxan alone treated group. Oxidative stress was noticed in rat’s pancreatic tissue as evidenced by a significant decrease in glutathione level, glutathione reductase, glutathione-S-transferase, and catalase activities. Malondialdehyde showed a significant increase compared to the normal saline-treated control group. Serum biochemistry and oxidative stress markers were consistent with the pancreatic histopathological studies. Treatment of diabetic rats with L. microphyllum at a dose level of 100, 200 and 400 mg/kg body weight leaves extract for 14 d significantly prevented these alterations and attenuated alloxan-induced oxidative stress (P<0.05).Conclusion: The results of the present study indicated that the antihyperglycemic potential of L. microphyllum might be ascribable to its antioxidant and free radical scavenging properties. Thus, it is concluded that L. microphyllum may be helpful in the prevention of diabetic complications associated with oxidative stress.

scholarly journals Effect of Afghan Hibiscus sabdariffa L. and Carum Carvi L. Hydro-alcoholic Extracts Either Alone or in Combination on Blood Glucose Level in Diabetic Rats

2020 ◽  
Vol 11 (4) ◽  
pp. 759-764
Author(s):  
Murtaza Haidari ◽  
Kawsar Alami ◽  
Arefa Hossaini ◽  
Sayed Yousof Mousavi
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Fasting Blood Glucose ◽  
Body Weight Loss ◽  
Diabetic Rats ◽  
Hypoglycemic Effect ◽  
Hibiscus Sabdariffa ◽  
Carum Carvi

Combination therapy is considered as a new and effective therapeutic strategy for control of hyperglycemia. The present study aimed to determine the hypoglycemic effect of Afghan Hibiscus sabdariffa L. and Carum Carvi L. hydro-alcoholic extracts either alone or in combination on diabetic rats. Streptozotocin-induced diabetic rats were administered intraperitoneally with hydro-alcoholic extracts of H. sabdariffa (75, 150 and 300 mg/kg), C. carvi (150, 300 and 500 mg/kg) and their combinations for 21 days. The Fasting blood glucose and body weight of rats were determined on 0, 7, 14 and 21st days. The results showed a significant (P<0.0001) hypoglycemic effect of H. sabdariffa extract (75, 150 and 300 mg/kg) on 7, 14 and 21th days, C. carvi extract (500 mg/kg), and their effective doses combination (75:25), especially on 7th day. Only 75 mg/kg of H. sabdariffa had positive effect on body weight loss of diabetic rats (P<0.05). One can conclude that Afghan H. sabdariffa and C. carvi hydro-alcoholic extracts and their combination have a hypoglycemic effect. However, their combinations do not have any synergic effects, so the hypoglycemic effect of H. sabdariffa was much greater and even normalized the blood glucose level.

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