scholarly journals CrudeAloe veraGel Shows Antioxidant Propensities and Inhibits Pancreatic Lipase and Glucose MovementIn Vitro

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Urmeela Taukoorah ◽  
M. Fawzi Mahomoodally
Keyword(s):  
Pancreatic Lipase ◽  
Antioxidant Properties ◽  
Aloe Vera ◽  
Reducing Power ◽  
Kinetic Studies ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Maximal Velocity ◽  
Inhibitory Potential

Aloe veragel (AVG) is traditionally used in the management of diabetes, obesity, and infectious diseases. The present study aimed to investigate the inhibitory potential of AVG againstα-amylase,α-glucosidase, and pancreatic lipase activityin vitro. Enzyme kinetic studies using Michaelis-Menten (Km) and Lineweaver-Burk equations were used to establish the type of inhibition. The antioxidant capacity of AVG was evaluated for its ferric reducing power, 2-diphenyl-2-picrylhydrazyl hydrate scavenging ability, nitric oxide scavenging power, and xanthine oxidase inhibitory activity. The glucose entrapment ability, antimicrobial activity, and total phenolic, flavonoid, tannin, and anthocyanin content were also determined. AVG showed a significantly higher percentage inhibition (85.56±0.91) of pancreatic lipase compared to Orlistat. AVG was found to increase the Michaelis-Menten constant and decreased the maximal velocity (Vmax) of lipase, indicating mixed inhibition. AVG considerably inhibits glucose movement across dialysis tubes and was comparable to Arabic gum. AVG was ineffective against the tested microorganisms. Total phenolic and flavonoid contents were66.06±1.14 (GAE)/mg and60.95±0.97 (RE)/mg, respectively. AVG also showed interesting antioxidant properties. The biological activity observed in this study tends to validate some of the traditional claims of AVG as a functional food.

scholarly journals Hepatoprotective studies on methanolic extract fractions of Lindernia ciliata and development of qualitative analytical profile for the bioactive extract

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Praneetha Pallerla ◽  
Narsimha Reddy Yellu ◽  
Ravi Kumar Bobbala
Keyword(s):  
Methanolic Extract ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Liver Homogenate ◽  
Reducing Power ◽  
Hepatoprotective Activity ◽  
Total Phenolic ◽  
Effective Fraction

Abstract Background The objective of the study is to evaluate the hepatoprotective activity of methanolic extract fractions of Lindernia ciliata (LC) and development of qualitative analytical profile of the bioactive fraction using HPLC fingerprinting analysis. All the fractions of methanolic extract of Lindernia ciliata (LCME) are assessed for their total phenolic, flavonoid contents and in vitro antioxidant properties by using DPPH, superoxide, nitric oxide, hydroxyl radical scavenging activities and reducing power assay. Acute toxicity study was conducted for all the fractions and the two test doses 50 and 100 mg/kg were selected for the hepatoprotective study. Liver damage was induced in different groups of rats by administering 3 g/kg.b.w.p.o. paracetamol and the effect of fractions were tested for hepatoprotective potential by evaluating serum biochemical parameters and histology of liver of rats. The effective fraction was evaluated for its antihepatotoxic activity against D-Galactosamine (400 mg/kg b.w. i.p.) and in vivo antioxidant parameters viz., Glutathione (GSH), Melondialdehyde (MDA) and Catalase (CAT) levels are estimated using liver homogenate. Results Among all the fractions, butanone fraction of LCME, (BNF-LCME) has shown better hepatoprotective activity and hence it is selected to evaluate the antihepatotoxicity against D-GaIN. The activity of BNF-LCME is well supported in in vitro and in vivo antioxidant studies and may be attributed to flavonoidal, phenolic compounds present in the fraction. Hence, BNF-LCME was subjected to the development of qualitative analytical profile using HPLC finger printing analysis. Conclusions All the fractions of LCME exhibited significant hepatoprotective activity and BNF-LCME (50 mg/kg) was identified as the most effective fraction.

scholarly journals Evaluation of Antioxidant Properties ofPhaulopsis fascisepalaC.B.Cl. (Acanthaceae)

2009 ◽  
Vol 6 (2) ◽  
pp. 227-231 ◽  
Author(s):  
S. A. Adesegun ◽  
A. Fajana ◽  
C. I. Orabueze ◽  
H. A. B. Coker
Keyword(s):  
Ascorbic Acid ◽  
Leaf Extract ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Chelating Ability

The antioxidant activities of crude extract ofPhaulopsis fascisepalaleaf were evaluated and compared with α-tocopherol and BHT as synthetic antioxidants and ascorbic acid as natural-based antioxidant.In vitro, we studied its antioxidative activities, radical-scavenging effects, Fe2+-chelating ability and reducing power. The total phenolic content was determined and expressed in gallic acid equivalent. The extract showed variable activities in all of thesein vitrotests. The antioxidant effect ofP. fascisepalawas strongly dose dependent, increased with increasing leaf extract dose and then leveled off with further increase in extract dose. Compared to other antioxidants used in the study, α-Tocopherol, ascorbic acid and BHT,P. fascisepalaleaf extract showed less scavenging effect on α,α,-diphenyl-β-picrylhydrazyl (DPPH) radical and less reducing power on Fe3+/ferricyanide complex but better Fe2+-chelating ability. These results revealed thein vitroantioxidant activity ofP.fascisepala.Further investigations are necessary to verify these activitiesin vivo.

scholarly journals In vitro Antidiabetic, anti-obesity and antioxidant proprities of Rosemary extracts

2014 ◽  
Vol 10 (2) ◽  
pp. 2305-2316 ◽  
Author(s):  
Manel Ben Ali ◽  
Kais Mnafgui ◽  
Abdelfattah Feki ◽  
Mohamed Damak ◽  
Noureddine Allouche
Keyword(s):  
Essential Oil ◽  
Ethyl Acetate ◽  
Pancreatic Lipase ◽  
Antioxidant Properties ◽  
Methanolic Extracts ◽  
Ic50 Values ◽  
Inhibitory Potential ◽  
Prevention Of Diabetes ◽  
First Time

Diabetes mellitus is a serious health problem worldwide that has adverse and long-lasting consequences for individuals, families, and communities. Hence, this study sought to investigate the inhibitory potential of rosemary extracts on key-enzymes related to diabetes such as α-amylase and pancreatic lipase activities, as well as to assess their antioxidant properties in vitro. The IC50 values of Rosemary essential oil, ethyl acetate and methanolic extracts against α-amylase were 28.36, 34.11 and 30.39 µg/mL respectively, and those against pancreatic lipase were 32.25, 36.64 and 34.07 µg/mL, suggesting strong anti-diabetic and anti-obesity effects of Rosemary. The methanolic extract was found to be the highest in levels of phenolic (282.98 µgGAE/mg extract) and flavonoids (161.05 µg QE /mg extract) contents as well as in the antioxidant activity (IC50 = 15.82 µg/mL) as compared to other extracts ethyl acetate (IC50 = 32.23 µg/mL) and essential oil  (IC50 = 96.12 µg/mL).Antioxidant efficacy of Rosemary extracts has been estimated in the stabilization of sunflower oil (SFO) at three different concentrations, i.e. 200 (SFO-200), 500 (SFO-500) and 1000 ppm (SFO-1000). Results showed the highest efficiency of SFO-1000.The results obtained in this study demonstrated for the first time that Rosemary is a potent source of natural inhibitors of α-amylase and pancreatic lipase with powerful antioxidants proprieties that might be used in the food stabilization and the prevention of diabetes and obesity complications as a complementary pharmacological drug.

scholarly journals Antioxidant Activity and Total Phenolic Content in Shiitake Mycelial Exudates

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Weihuan Huang ◽  
Joo-Shin Kim ◽  
Hau Yin Chung
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
In Vitro Assays ◽  
Total Phenolic ◽  
Shiitake Mushroom ◽  
Ferrous Ions

Exudates (DE) secreted from two shiitake mushroom mycelia (strains 1358 and L5458) were evaluated for their antioxidative properties and phenolic content. 1358DE and L5458DE showed distinct antioxidant activity in different in vitro assays, including scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, hydroxyl radical, superoxide anions and hydrogen peroxide; the ability to chelate ferrous ions; reducing power; hemolysis inhibition activity in rat erythrocyte; and lipid peroxidation inhibition (IC50 values of 1358DE and L5458DE were 3.3 and 132.6; 44.5 and > 1000; 26.9 and 53.7; 153.6 and >175.0; 176.0 and 521.0; 26.7 and 746.4; 47.8 and 736.9; and 3.1 and > 1000 μg/mL, respectively). Their total phenolic content was 237.33 and 24.08 mg gallic acid equivalent (GAE)/g of dry DE, respectively. Overall, these results show that 1358DE generally possesses better antioxidant properties than L5458DE, possibly due to its larger total phenolic content. Shiitake mushroom mycelial exudates, particularly of 1358DE, could be a good source of natural antioxidants.

scholarly journals Chemical profiling, in vitro antioxidant and antidiabetic assessment of flavonoids from the ethanol extract of Hermannia geniculata root

2021 ◽  
Vol 19 (1) ◽  
pp. 1-13
Author(s):  
L.A. Adeniran ◽  
C.P. Palanisamy ◽  
A.O.T. Ashafa
Keyword(s):  
Competitive Inhibition ◽  
Antioxidant Properties ◽  
Reactive Oxygen ◽  
Ethanol Extract ◽  
Kinetic Studies ◽  
Retention Factor ◽  
Chemical Profiling ◽  
Ic50 Values ◽  
Inhibitory Potential

Determination of the in vitro antioxidant and the inhibitory potential of flavonoids from Hermannia geniculata (FHG) roots on diabetes-linked enzymes was carried out. The chemical profiling of FHG roots extract was investigated using High Pressure Thin Layer Chromatography (HPTLC) fingerprint analysis. The reactive oxygen scavenging potential of the extract was analyzed. Starch solution (1%) was reacted with different concentrations of FHG extract to determine the α-amylase inhibitory potential of the extract while α- glucosidase inhibition assay was carried out through incubation of different concentrations of the extract followed by addition of p-ntrophenyl-α-Dglucopyranoside solution. HPTLC results indicated the presence of flavonoids/ phenolcarboxylic acid, and Kaemferol (Rf 0.80) were detected in the extract with retention factor Rf. ranging from 0.08 to 0.95. FHG extract showed commendable antioxidant properties with IC50 values (3.07± 0.12, 2.13± 0.67) µg/mL for 1, 1-diphenyl-2- picrylhydrazyl (DPPH) and 2, 2-azino-bis (3- ethylbenzothiazoline-6-sulphonic) acid (ABTS) radicals which were lower and significantly different (p<0.05) compared to standard silymarin with IC50: (3.55± 0.10, 2.77± 0.75) µg/mL for DPPH and ABTS respectively. The results indicated mild inhibition of α-amylase with IC50: (5.55± 0.37) µg/mL which was higher and significantly different (p<0.05) from acarbose with IC50: (3.81± 0.29) µg/mL. Moreover, the extract showed 73% inhibition of α-glucosidase. Kinetic studies of FHG extract revealed competitive and mixed non-competitive inhibition of α- amylase and α-glucosidase respectively. This study indicated FHG capabilities of scavenging reactive oxygen species and reducing hydrolysis of starch responsible for post-prandial hyperglyceamia seen in type 2 diabetes mellitus. Keywords: Antidiabetic, Antioxidant, Flavonoids, Hermannia geniculate, HPTLC

scholarly journals EVALUATION OF BIOACTIVITY OF JAGGERY PREPARED USING PLANT MUCILAGE AS CLARIFICANT

2018 ◽  
Vol 11 (11) ◽  
pp. 294
Author(s):  
Harish Nayaka Ma ◽  
Lava Chikkappaiah ◽  
Venkatesh Ks ◽  
Gunashree Bs ◽  
Sudharshan S
Keyword(s):  
Antibacterial Activity ◽  
Aloe Vera ◽  
Reducing Power ◽  
Diffusion Method ◽  
Total Phenolic ◽  
Total Phenol Content ◽  
Total Flavonoids ◽  
Death Time ◽  
Reducing Power Assay

Objective: The aim of the study was to prepare the jaggery using plant mucilage as clarificants and to evaluate the bioactivity of jaggery by determining total phenols, total flavonoids, reducing power, antibacterial activity, and antihelmintic activity.Methods: Jaggery was prepared from sugarcane variety Co-80632 using five plant mucilage as clarificants, namely Aloe vera, flax seeds, fenugreek, purslane, and malabar spinach at three different concentrations, i.e., 0.1%, 0.2%, and 0.4% of raw sugarcane juice. The characteristic bioactivities such as total phenol content by Folin–Ciocalteu method, flavonoids content by spectrophotometer method, reducing power assay by measuring the absorbance at 700 nm, antibacterial activity by well-diffusion method, and antihelmintic activity by in vitro were determined.Results: The highest total phenolic content was observed in jaggery prepared using plant mucilage clarificant of A. vera (JAV4 [3.68±0.02]) and Fenugreek seeds (JFG4 [3.61±0.02]) at 0.4% followed by them at 0.2% and 0.1% concentration, respectively. Similarly, a significant amount of total flavonoids content was elevated only in 0.4% plant mucilage clarificants of Aloe vera-treated experimental group jaggery (0.73±0.01) compared to control (0.61±0.02). Further, the antioxidant activity of jaggery was evaluated by reducing power. The increased absorbance at 700 nm indicated the presence of reducing power. At 10 mg/ml concentration, an absorbance unit of 1.93 and 1.80 was observed for jaggery prepared using 0.4% concentration of A. vera and fenugreek seed mucilage clarificants. Antihelmintic activity of jaggery showed dosage depended on the pattern where with the increase in the concentration of mucilage, the antihelmintic activity enhanced. A. vera mucilage showed maximum antihelmintic activity at 0.4% concentration with paralytic time (28.6 min) and death time (39.6 min).Conclusion: Jaggery prepared using plants mucilaginous clarificants is the richest source of polyphenols such as phenolic acids and flavonoids, thereby contributed to the enhancement of bioactivity such as antioxidant, antibacterial, and antihelmintic activity. Thus, jaggery prepared using plant mucilage as clarificants is a novel nutraceutical product which can supplement the nutrients along with various medicinal properties through antioxidant, antibacterial, and antihelmintic activity.

scholarly journals Antioxidant Capacities of Jujube Fruit Seeds and Peel Pulp

2020 ◽  
Vol 10 (17) ◽  
pp. 6007 ◽  
Author(s):  
Yung-Sheng Lin ◽  
Wen-Shin Lin ◽  
Jing-Wen Tung ◽  
Ya-Chih Cheng ◽  
Min-Yun Chang ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Dry Weight ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Jujube Fruit

In this study, the effects of different fruit parts and extraction conditions on the antioxidant properties of jujube (Ziziphus jujuba Mill.) fruit were investigated. Five in vitro antioxidant models and statistical analyses were performed. The results revealed that jujube peel with pulp (peel pulp) exhibited better antioxidant capacity than did seeds. Overall, jujube peel pulp extracted using 50% ethanol at 60 °C exhibited the best antioxidant capacity in terms of 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (0.3 ± 0 mg/mL), 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activity (0.5 ± 0 mg/mL), total phenolic content (38.3 ± 0.4 mg gallic acid equivalent per gram dry weight), total flavonoid content (43.8 ± 0.2 mg quercetin equivalent per gram dry weight), and reducing power (41.9 ± 2.2 mg ascorbic acid equivalent per gram dry weight). The results indicated that jujube peel pulp is a more potential natural antioxidant than seeds.

scholarly journals In vitro antioxidant and antifungal activity of methanol root extract of Flacourtia indica (Burm.f.) Merr. against selected fungal species

Biomedicine ◽  
2021 ◽  
Vol 41 (3) ◽  
pp. 616-622
Author(s):  
N Eramma ◽  
Devaraja Gayathri
Keyword(s):  
Antifungal Activity ◽  
Aspergillus Niger ◽  
Bacterial Infections ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Trichophyton Mentagrophytes ◽  
Total Phenolic ◽  
Root Extract ◽  
Dependent Manner

Introduction and Aim: Flacourtia indica (Burm.f.) Merr. is a member of the family Flacourtiaceae. This herb was used to treat a range of ailments and served as the foundation for ethnomedicine. Despite its enormous medical importance, the plant has received very little research with only a few antibacterial and pharmacological studies. The plant's roots, in particular, are understudied.  In this study, the antioxidant and antifungal activities of methanol (MeOH) root extract of F. indica was tested in vitro.   Materials and Methods: Antifungal activity was assessed against human fungal pathogens, Aspergillus niger (MTCC 404) and Trichophyton mentagrophytes (MTCC 7687). The natural antioxidants in roots were studied using five different antioxidant methods, including 2, 2-diphenyl-1-picrylhydrazyl (DPPH), nitric oxide scavenging (NOS), reducing power assay (RPA), measuring total phenolic content (TPC) by Folin-Ciocalteu Reagent (FCR).   Results: When compared to Aspergillus niger, the root extract has strong antifungal activity against Trichophyton mentagrophytes (MTCC 7687), generating a broader zone of inhibition (MTCC 404). Clotrimazole is a common antifungal medicine that can be used as a positive control in this investigation. The antioxidant activity of MeOH root extract increased in a dose-dependent manner, and it had outstanding NOS and antioxidant properties.   Conclusion: The results conclude that, F. indica appears to be a promising herbal option for the treatment of a variety of fungal and bacterial infections, with high antioxidant capacity.

scholarly journals Comparative Studies of Phytochemicals Analysis and in vitro Antioxidant Properties of Various Solvent Extracts of Sphaeranthus indicus Collected from three Different Climatic Zones of Central India

2021 ◽  
Vol 33 (9) ◽  
pp. 2237-2243
Author(s):  
Pooja N. Akhand ◽  
Veena Sharma ◽  
Anupam K. Pathak
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Central India ◽  
Total Phenolic ◽  
Climatic Zones ◽  
Phenolic Contents ◽  
Total Antioxidant ◽  
Sphaeranthus Indicus

In present study, the total phenolic, flavonoid, tannin contents and the antioxidant activity of various solvent extracts of Sphaeranthus indicus collected from three different regions of central India were assessed. Plants extracts were prepared using Soxhlation method, while the total phenols, flavonoids and tannins were measured by the spectrophotometric method. DPPH, metal chelating, nitric oxide, superoxide oxide scavenging activity and FRAP, reducing power, total antioxidant assays were also evaluated. The highest phenolic contents 268.22 GAE equivalent, flavonoids 441.33 QE equivalents and tannin content was 120.32 tannic acid equivalents (mg/g) obtained from ethanolic extracts of sample SIEE-1 compared to other two plants extract. Similarly, the highest flavonoid contents was observed in SIAE-1 aqueous extract and lowest in SIAE-2 and SIAE-3. Extract of SIEE-1 possessed maximum antioxidant potentiality and SIAE-2 shown the least antioxidant activity in all assays. It could be concluded that different agroclimatic conditions have effects on the total phenolics, flavonoids, tannin contents and antioxidant potentiality of S. indicus plant.

scholarly journals In vitro Antioxidant Properties of Bersama abyssinica Stem Bark Extracts

Proceedings ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 21
Author(s):  
Kouadio Ibrahime Sinan ◽  
Kouadio Bene ◽  
Abdurrahman Aktumsek ◽  
Gokhan Zengin
Keyword(s):  
Ethyl Acetate ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Water Extract ◽  
Reducing Power ◽  
Stem Bark ◽  
Sub Saharan Africa ◽  
Total Phenolic ◽  
Bersama Abyssinica

Bersama abyssinica, belonging to the Melianthaceae family, is distributed across Sub Saharan Africa. Decoctions of the bark, leaves, and roots of B. abyssinica have been extensively used in traditional medicine to manage many stomach complications such as colic, diarrhea, dysentery, and intestinal worms. In this study, we examined three extracts (ethyl acetate, methanol and water) obtained from B. abyssinica stem barks in terms of antioxidant properties. The antioxidant abilities were investigated by different chemical methods, including free radical scavenging (DPPH and ABTS), reducing power (CUPRAC and FRAP), metal chelating and phosphomolybdenum assay. In addition, total phenolic and flavonoid contents in the extracts were calculated. The highest level of phenolics was determined in water extract (230.83 mg GAE/g extract), followed by methanol (216.79 mg GAE/g extract) and ethyl acetate (100.57 mg GAE/g extract). In same line with total phenolic content, the best antioxidant properties were noted for water and methanol extracts. Our findings suggested that B. abyssinica stem bark extracts could be considered as promising sources of natural antioxidants.

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