scholarly journals Inhibitory effect of hydroalcoholic extract of Cestrum Nocturnum on α-amylase activity

2018 ◽  
Vol 6 (03) ◽  
pp. 52-54
Author(s):  
Anil Kamboj
Keyword(s):  
Amylase Activity ◽  
Inhibitory Effect ◽  
Vital Role ◽  
Postprandial Hyperglycemia ◽  
Inhibition Activity ◽  
Hydroalcoholic Extract ◽  
Aerial Parts ◽  
Ic50 Value ◽  
Natural Inhibitors

Inhibition of α- amylase play a vital role in the clinical management of postprandial hyperglycemia. Although, powerful synthetic inhibitors are available, natural inhibitors are potentially safer. The present study was carried out to evaluate α- amylase inhibition activity from hydroalcoholic extracts from aerial parts of Cestrum nocturnum. Hydroalcoholic extract was prepared by Soxhletation Method. The extract showed strong inhibition towards α- amylase activity and IC50 value were 45.9 μg. This In vitro studies indicate the potential of C. nocturnum in the development of effective anti-diabetic agents.

The Inhibitory effect of hydroalcoholic extract from the Algerian Echium trygorrhizum Pomel roots on α-amylase activity.

2021 ◽  
Vol 18 ◽  
Author(s):  
Allaoua Nouri ◽  
Lakhder Gasmi ◽  
Chawki Bensebini ◽  
Daoud Harzallah ◽  
Seddik Khennouf ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Aspergillus Oryzae ◽  
Condensed Tannins ◽  
Amylase Activity ◽  
Folk Medicine ◽  
Radical Scavenging ◽  
Inhibitory Effect ◽  
Antioxidant Power ◽  
Hydroalcoholic Extract

Background: Species of Echium trygorrhizum Pomel , are used traditionally in Algeria folk medicine for the treatment of Diabetes, Jaundice and Tonsillitis. To our knowledge, no previous study has been conducted out on the pharmacological activities of this species. Objective: The objective of the present research was to evaluate the content of polyphenols , flavonoids and condensed tannins compounds and to assess in vitro the antioxidant activity and the inhibitory effect of the hydroalcoholic extract of this plant, on α-amylase activity, an enzyme responsible for digestion of carbohydrate before the process of intestinal absorption. Methods: Polyphenols, flavonoids and condensed tannins were evaluated spectrophotometrically using Folin–Ciocalteu, the Aluminum chloride and vanillin methods respectively. The antioxidant activity using DPPH radical scavenging, ABTS, Ferric reducing antioxidant power and β- carotene bleaching tests and the assessment of in vitro α- amylase inhibitory potential by an Aspergillus oryzae α- amylase have been studied. Results: The hydroalcoholic crude extract was able to inhibit the α-amylase enzyme in vitro, with an IC50 of 0.56 ± 0.044 mg/ml, in addition the contents of polyphenols and flavonoids were found to be 157.403 ± 0.835 µg GAE/mg extract and 30.156±2.634µg Q E / mg extract, respectively, Whereas the amount of tannins was 65.293 ± 0.883µg Cat E/ mg of dry extract. Conclusion: The present study revealed that the extract is rich in phenolic compounds, which play a really important role in the scavenging of free radicals. It has been reported the inhibitory capacity of hydroalcoholic roots extract on Aspergillus oryzae α-amylase enzyme might be used as a natural agent within the management of diabetes mellitus.

scholarly journals Potential Effect of Pomegranate Peels Extract (Punica Granatum.) against Covid-19 Virus .

2021 ◽  
Author(s):  
Ashraf fawzy mosa ◽  
Mostafa abo Elhoda Mohamed
Keyword(s):  
Tissue Culture ◽  
Water Extract ◽  
Punica Granatum ◽  
Inhibitory Effect ◽  
Potential Effect ◽  
Laboratory Methods ◽  
Global Epidemic ◽  
Ic50 Value ◽  
The World

Abstract Background: Covid-19 Virus infection poses significant global health challenges and considered a global epidemic sweeping all countries of the world Which prompted scientists around the world to search for a quick or safe treatment to preserve people's lives .So far, options for controlling and treating the disease have not been revealed. The current study was conducted to evaluate the effectiveness of pomegranate peels extract against the Covid-19 virus in the laboratory. Methods: In this research, tow methods of extraction are carried out ethyl alcohol and distal water extract of pomegranate peels . activity of the extract assessed using 50% Tissue Culture Infectious Doses (TCID50) method in Vero E6 cells. Results: Pomegranate peels extract had the highest inhibitory effect against Covid -19 virus with IC50 value of 0.125, 0.0625 and 0.031256 μl in Vero E6 cells. Conclusion: Based on our results, the aqueous extract of pomegranate peels can inhibit Covid-19 virus replication in vitro.

Phytochemical analysis of olive flowers' hydroalcoholic extract and in vitro evaluation of tyrosinase, elastase and collagenase inhibition activity

Fitoterapia ◽  
2020 ◽  
Vol 143 ◽  
pp. 104602 ◽  
Author(s):  
Apostolis Angelis ◽  
Panagiotis Mavros ◽  
Panagiota Efstathia Nikolaou ◽  
Sofia Mitakou ◽  
Maria Halabalaki ◽  
...  
Keyword(s):  
Phytochemical Analysis ◽  
Inhibition Activity ◽  
Hydroalcoholic Extract ◽  
In Vitro Evaluation ◽  
Collagenase Inhibition

scholarly journals ASSESMENT OF ANTI-INFLAMMATORY ACTIVITY AND CYTOTOXICITY OF FREEZE DRIED HYDROALCOHOLIC EXTRACT OF Bidens andicola ON ISOLATED NEUTROPHILS

2017 ◽  
Vol 10 (6) ◽  
pp. 160
Author(s):  
Vinueza D ◽  
LÓpez E ◽  
Acosta K ◽  
Abdo S
Keyword(s):  
Freeze Drying ◽  
Water Soluble ◽  
Inflammatory Activity ◽  
Hydroalcoholic Extract ◽  
Cytotoxicity Assays ◽  
Aerial Parts ◽  
Controlled Conditions ◽  
Freeze Dried ◽  
Anti Inflammatory

Objective: The aim of this study was to evaluate anti-inflammatory activity and cytotoxicity in vitro of hydroalcoholic extract of Bidens andicola.Methods: B. andicola hydroalcoholic extract was obtained from aerial parts of B. andicola, following a standardized methodology. Briefly, aerial parts of B. andicola were extracted with ethanol 70% v/v and defatted with n-hexane, hydroalcoholic fraction was concentrated under controlled conditions in a rotary evaporator, and finally the residue was freeze-drying to obtain the hydroalcoholic extract of B. andicola. Anti-inflammatory activity and cytotoxicity assays were carried out using in vitro isolated neutrophils model using stable water-soluble tetrazolium salts.Results and Conclusions: The in vitro anti-inflammatory assay on isolated neutrophils demonstrated that the hydroalcoholic extract showed antiinflammatoryactivity compared to aspirin, with inflammatory inhibition percent values of 80.138±0.729 to hydroalcoholic extract of B. andicola and 82.117±0.762 to aspirin, each tested in five replicates at the concentration of 200 ppm of hydroalcoholic extract or reference. 

scholarly journals Screening and Application of Chitin Synthase Inhibitors

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1029
Author(s):  
Xiaozai Shi ◽  
Shuo Qiu ◽  
Yingling Bao ◽  
Hanchi Chen ◽  
Yuele Lu ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Inhibitory Concentration ◽  
Inhibitory Effect ◽  
Chitin Synthase ◽  
Fungal Cell ◽  
Ic50 Value ◽  
Further Development ◽  
Fungicide Target ◽  
Better Than

Chitin is an important part of the fungal cell wall, but is not found in plants and mammals, so chitin synthase (CHS) can be a green fungicide target. In this paper, 35 maleimide compounds were designed and synthesized as CHS inhibitors. All the screened compounds showed different degrees of CHS inhibitory activity and antifungal activity in vitro. In particular, the half–inhibitory concentration (IC50) value of compound 20 on CHS was 0.12 mM, and the inhibitory effect was better than that of the control polyoxin B (IC50 = 0.19 mM). At the same time, this compound also showed good antifungal activity and has further development value.

scholarly journals Morphometric Measurements to Quantify the Cerulein Induced Hyperstimulatory Pancreatitis of Rats under the Protective Effect of Lectins

1998 ◽  
Vol 17 (4) ◽  
pp. 219-230 ◽  
Author(s):  
Ludwig Jonas ◽  
Ulrike Mikkat ◽  
Anke Witte ◽  
Uta Beckmann ◽  
Katrin Dölker ◽  
...  
Keyword(s):  
Protective Effect ◽  
Amylase Activity ◽  
Acinar Cells ◽  
Inhibitory Effect ◽  
Pancreatic Acinar Cells ◽  
Amylase Secretion ◽  
Ulex Europaeus ◽  
Serum Amylase Activity

In preceding papers we demonstrated an inhibitory effect of wheat germ agglutinin (WGA) and Ulex europaeus agglutinin (UEA) on the cholecystokinin (CCK) binding to the CCK receptor of rat pancreatic cells and also on the CCK induced Ca2+release and α-amylase secretionin vitroas well as on pancreatic secretion of intact ratsin vivo. In the present study we show the same inhibitory effect of both lectins on the cerulein pancreatitis of rats. This acute pancreatitis was induced by supramaximal injections (5 µg/kg/h iv or 10 µg/kg/h ip) of the CCK analogue cerulein in rats every hour. To monitor the degree of pancreatitis, we measured the number and diameter of injury vacuoles in the pancreatic acinar cells as one of the most important signs of this type of pancreatitis by light microscopic morphometry with two different systems on paraffin sections. Furthermore, the serum α-amylase activity was measured biochemically. We found a correlation between the diameter of vacuoles inside the acinar cells and the serum enzyme activity up to 24 h. The simultaneous ip administration of cerulein and WGA or UEA in a dosage of 125 µg/kg/h for 8 h led to a reduction of vacuolar diameter from 13.1 ± 2.0 µm (cerulein) to 7.5 ± 1.1 µm (cerulein + WGA) or 7.2 ± 1.3 µm (cerulein + UEA). The serum amylase activity was reduced from 63.7 ± 15.8 mmol/l \times min (cerulein) to 37.7 ± 11.8 (cerulein + WGA) or 39.4; +52.9; -31.1 (cerulein + UEA-I). Both parameters allow the grading this special type of pancreatitis to demonstrate the protective effect of the lectins.

scholarly journals Tyrosinase Inhibitory Effect, Antioxidant and Anticancer Activities of Bioactive Compounds in Ripe Hog Plum (Spondias Pinnata) Fruit Extracts

2019 ◽  
Vol 35 (3) ◽  
pp. 916-926
Author(s):  
Supawadee Patathananone ◽  
Jureerut Daduang ◽  
Amonrat Koraneekij ◽  
Chia-Ying Li
Keyword(s):  
High Performance ◽  
Antioxidant Property ◽  
Inhibitory Effect ◽  
Tyrosinase Activity ◽  
Normal Fibroblast ◽  
Anticancer Activities ◽  
Ic50 Value ◽  
Bioactive Agents ◽  
Hog Plum

The usage of ripe hog plum fruit (Spondias pinnata) extracts in cosmetics and food products, including cancer therapeutic agents, have a few studies. Herein, the strong anti-tyrosinase activity found in the extracted part of isopropanol is reported. This extract was separated by liquid/liquid extraction using hexane: methanol+H2O. The hydrophilic layer (6A*) exhibited the anti-tyrosinase, antioxidant, and anticancer activities in vitro. The IC50 value of each bioactivity was presented as approximately 0.18, 0.04, and 1.40 mg/ml, respectively. In addition, 6A* fraction showed a very low cytotoxic effect in normal fibroblast cells (NHDF cells). The bioactive agents in 6A* were purified by C18 reverse-phase High-Performance Liquid Column Chromatography (HPLC). The 12 purified peaks were shown in the chromatogram profile. All peaks (excepted 6A-06 and 6A-09) displayed anti-tyrosinase activity, whereas the antioxidant property was not found in 6A-01, 6A-06, and 6A-08 but was represented in other peaks. Most purified peaks were indicated to be the aromatic alcohol or derivative phenol compounds.

scholarly journals In Vitro and In Silico Evaluation for the Inhibitory Action of O. basilicum Methanol Extract on α-Glucosidase and α-Amylase

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Siba Shanak ◽  
Najlaa Bassalat ◽  
Raghad Albzoor ◽  
Sleman Kadan ◽  
Hilal Zaid
Keyword(s):  
Caffeic Acid ◽  
In Silico ◽  
Type Ii Diabetes ◽  
Methanol Extract ◽  
Inhibitory Effect ◽  
Major Health ◽  
In Silico Docking ◽  
Aerial Parts ◽  
Health Complications

Diabetes mellitus is a metabolic disease that predominates, nowadays. It causes hyperglycemia and consequently major health complications. Type II diabetes is the most common form and is a result of insulin resistance in the target tissues. To treat this disease, several mechanisms have been proposed. The most direct route is via inhibiting the intestinal enzymes, e.g., α-glucosidase and α-amylase, responsible for intestinal polysaccharide digestion that therefore would reduce the absorption of monosugars through the intestinal walls. In this study, we shed the light on this route by testing the inhibitory effect of Ocimum basilicum extract on the enzymes α-glucosidase and α-amylase in vitro and in silico. Experimental procedures were performed to test the effect of the O. basilicum methanol extract from aerial parts followed by the in silico docking. 500 μg/mL of the extract led to 70.2% ± 8.6 and 25.4% ± 3.3 inhibition on α-glucosidase and α-amylase activity, respectively. Similarly, the effect of caffeic acid, a major extract ingredient, was also tested, and it caused 42.7% ± 3.0 and 47.1% ± 4.0 inhibition for α-amylase and α-glucosidase, respectively. Docking experiments were performed to predict the phytochemicals responsible for this robust inhibitory activity in the O. basilicum extracts. Several compounds have shown variable levels of inhibition, e.g., caffeic acid, pyroglutamic acid, and uvasol. The results indicated that O. basilicum can be a potent antidiabetic drug.

scholarly journals Chemical Characterization of Opuntia ficus-indica (L.) Mill. Hydroalcoholic Extract and Its Efficiency against Gastrointestinal Nematodes of Sheep

2018 ◽  
Vol 5 (3) ◽  
pp. 80 ◽  
Author(s):  
Carolina Santos ◽  
Luciano Campestrini ◽  
Douglas Vieira ◽  
Izanara Pritsch ◽  
Fábio Yamassaki ◽  
...  
Keyword(s):  
Chemical Characterization ◽  
Inhibitory Effect ◽  
Gastrointestinal Nematodes ◽  
Gastrointestinal Parasites ◽  
In Vitro Tests ◽  
Cactus Pear ◽  
Opuntia Ficus Indica ◽  
Hydroalcoholic Extract ◽  
Quercetin Derivatives

Opuntia ficus-indica (L.) Mill. is a xerophylous plant that originated in tropical and subtropical America. This plant is popularly known in Brazil as “palma forrageira” (cactus pear) and plays a fundamental role in animal nutrition, mainly in the Northeastern semi-arid region of the country. The plant has several uses since it presents bioactive compounds that confer biological and pharmacological properties. In this context, the cactus pear can also be considered a potential product to combat parasite infections. The objective of this study was to chemically characterize the O. ficus-indica hydroalcoholic extract (OFIEOH) and to determine its efficacy against gastrointestinal parasites using in vitro tests. Initially, the hydroalcoholic extract from cladode peels of O. ficus-indica was produced by maceration for 21 days. For the chemical characterization, colorimetric dosages were performed for carbohydrates, proteins, phenols and condensed tannins. Liquid chromatography coupled to mass spectrometry/electron spray ionization (LC-MS/ESI) was used to characterize the polyphenolic profile of the OFIEOH extract. Fifteen compounds were identified in the OFIEOH extract, such as methyl, glycosylated and aglycone quercetin derivatives and aglycone and glycosylated kaempferol derivatives. Tri-glycosylated methyl quercetin derivatives were the main compounds identified. In vitro egg hatch (EHT) and larval migration tests (LMT) were used in a range of concentrations of OFIEOH from 12.5 to 100 mg/mL for EHT and 12.5 to 200 mg/mL for LMT. In addition, the LMT was used to test ivermectin (IVM) (from 11.4 to 57.1 µM), associated with the inhibitory concentration of 50% (IC50) for OFIEOH. The combination of OFIEOH (12.5 to 200 mg/mL) plus the IC50 of IVM was also tested. The efficacy of OFIEOH alone varied from 19.33 to 90.0% using the EHT. The LMT revealed an efficacy of 5.78 to 77.26% for the extract. Both tests showed a concentration-dependence inhibitory effect. We found a drug-extract antagonistic neutralizing effect when doses of IVM were added to OFIEOH (maximum efficacy of 73.78%), while a positive additive effect was observed when OFIEOH was added to the IC50 of IVM (IC50 of 82.79 for OFIEOH alone against an IC50 of 55.08 of OFIEOH + IVM). The data from this work indicate that OFIEOH alone may be considered as a suitable ecofriendly product to control gastrointestinal parasites of sheep, offering a more holistic approach to improve animal farming and welfare. The drug-extract interaction is also a promising therapeutic alternative, reducing the final dose to the host, with an optimum combination effect.

scholarly journals Evaluation of the antioxidant activity of various extracts of aerial parts of Cassia absus: An in-vitro techniques

2020 ◽  
Vol 11 (2) ◽  
pp. 1545-1550
Author(s):  
Mythri M ◽  
Sanal Dev K T ◽  
Kottai Muthu A
Keyword(s):  
Nitric Oxide ◽  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Antioxidant Potential ◽  
In Vitro Techniques ◽  
Aerial Parts ◽  
Ic50 Value ◽  
Total Antioxidant ◽  
The Difference

Cassia absus (Linn)Cassia absus(Linn) (family Fabaceae ) is generally known as “chaksu ” inan ayurvedic traditional system.The current study,aerial parts of different concentrates(Pet.ether, ethyl acetate and methanol) of Cassia absus, was evaluated for its in-vitro antioxidant potential byDiphenylpicrylhydrazyl radical,nitric oxide activity andtotal antioxidant activitytaking ascorbate as the standardfor all the three methods. The IC50 value was originated that methanolic concentrates of Cassia absusmore efficient inDiphenylpicrylhydrazyl radical,nitric oxide activity, total antioxidant activitycompared EA&PEconcentrates.The methanolic concentrates of Cassia absus& ascorbic acid exhibited antioxidant potential possessing IC50230µg/ml &130µg/ml (Nitric oxide). 205µg/ml &57µg/ml (total antioxidant),195µg/ml & 66µg/ml (Diphenylpicrylhydrazyl radical)respectively. The difference in the scavenging potential of the extracts can be due to variation in the percentage of bioactive compounds present in different solvents. Invitroantioxidant studiesobviouslyshow the methanolic concentrates of Cassia absushave better antioxidant activity. This result indicates that aerial parts of methanolic concentratesCassia absuscould serve as a natural antioxidant, which may be useful in preventfree radical-induced diseases.

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