scholarly journals HPLC identification of bio active flavonoids in methanolic and aqueous leaf extracts of Schrebera swietenioides Lin.,

2018 ◽  
Vol 7 (4) ◽  
pp. 2208
Author(s):  
Anuradha Devi V. ◽  
Veera Kishore I. ◽  
Ragha Latha R. ◽  
Kokkanti Mallikarjuna
Keyword(s):  
Hplc Analysis ◽  
Methanolic Extract ◽  
Structural Diversity ◽  
Low Molecular Weight ◽  
Leaf Extracts ◽  
Lead Compounds ◽  
Chromatographic Methods ◽  
Aqueous Leaf Extract ◽  
Rutin And Quercetin ◽  
Important Medicinal Plant

Natural products continue to provide unique structural diversity in comparison to standard combinatorial chemistry, which presents opportunities for discovering mainly novel low molecular weight lead compounds. Schrebera swietenioides belonging to family Oleaceae is an important medicinal plant used in the treatment of leprosy, diabetes and hepatic disorders by ethnic people. Chromatographic methods like TLC and HPLC were used for the separation and identification of flavonoids present in methanolic and aqueous leaf extract was studied. The chromatographic methods available for the separation of flavonoids in TLC and HPLC were adopted for the study. Three compounds were identified in TLC study in methanolic and aqueous leaf extracts. In HPLC analysis, peaks corresponding to flavonoids were obtained and were identified by comparing with literature and confirm that methanolic extract contains Rutin, Quercetin and Myricetin where as in aqueous extract Rutin and Quercetin were observed.  The anti diabetic activity of isolated compounds was determined by literature and confirms that compounds were found to having potent anti diabetic activity. This proves that the anti-diabetic activity of S. swietenioides was due to the presence of these bio-active compounds

scholarly journals HPLC identification of bioactive flavonoids in methanolic and aqueous leaf extracts of Homalium zeylanicum Benth.

2018 ◽  
Vol 7 (4) ◽  
pp. 2204
Author(s):  
Anuradha Devi V. ◽  
Veera Kishore I. ◽  
Ragha Latha R. ◽  
Kokkanti Mallikarjuna
Keyword(s):  
Hplc Analysis ◽  
Leaf Extract ◽  
Methanolic Extract ◽  
Structural Diversity ◽  
Low Molecular Weight ◽  
Leaf Extracts ◽  
Lead Compounds ◽  
Chromatographic Methods ◽  
Aqueous Leaf Extract ◽  
Important Medicinal Plant

Natural products continue to provide unique structural diversity in comparison to standard combinatorial chemistry, which presents opportunities for discovering mainly novel low molecular weight lead compounds. Homalium zeylanicum belonging to family Flacourtiaceae is an important medicinal plant having traditional uses in diabetes, rheumatism and wound healing activities. Chromatographic methods like TLC and HPLC were used for the separation and identification of flavonoids present in methanolic and aqueous leaf extract was studied. The chromatographic methods available for the separation of flavonoids in TLC and HPLC were adopted for the study. Three compounds were identified in TLC study in methanolic leaf extracts. In HPLC analysis, peaks corresponding to flavonoids were obtained and were identified by comparing with literature and confirm that methanolic extract contains Rutin, Quercetin and Myricetin where as in aqueous extract Quercetin, Myricetin and Kaempferol were observed.  The anti diabetic activity of isolated compounds was determined by literature and confirms that compounds were found to having potent anti diabetic activity. This proves that the anti-diabetic activity of Homalium zeylanicum was due to the presence of these bio-active compounds

scholarly journals Study of the Antimalarial Activity of the Leaf Extracts and Fractions of Persea americana and Dacryodes edulis and Their HPLC Analysis

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Philip F. Uzor ◽  
Chukwuebuka K. Onyishi ◽  
Adaeze P. Omaliko ◽  
Somtochukwu A. Nworgu ◽  
Onyemaechi H. Ugwu ◽  
...  
Keyword(s):  
Plasmodium Berghei ◽  
Hplc Analysis ◽  
Antimalarial Activity ◽  
Persea Americana ◽  
Leaf Extracts ◽  
Lead Compounds ◽  
Phytochemical Composition ◽  
Potential Sources ◽  
Water Fractions ◽  
Dacryodes Edulis

In the present study, the antimalarial activity of the extracts and fractions of the leaves of Persea americana and Dacryodes edulis as well as their phytochemical compositions were examined. Each of the extracts of the plants was successively fractionated to obtain hexane, ethyl acetate, methanol, and water fractions. The extracts and fractions were tested against Plasmodium berghei in both curative and suppressive antimalarial mouse models. Their major phytochemical composition was studied by the standard chemical tests and HPLC analysis. The extracts and fractions of P. americana and D. edulis demonstrated significant ( p < 0.05 ) maximal plasmodial inhibition as 52.16 ± 2.77% and 57.10 ± 1.98%, respectively, and chemosuppression of parasitemia as 64.01 ± 0.08% and 71.99 ± 0.06%, respectively. The major secondary metabolites identified in the plants include alkaloids, flavonoids, and saponins. It was concluded that P. americana and D. edulis possess promising antimalarial activity and they are potential sources of new lead compounds against malaria.

scholarly journals Optimization of the Antioxidant Activities of Mixtures of Melastomataceae Leaves Species (M. malabathricum Linn Smith, M. decemfidum, and M. hirta) Using a Simplex Centroid Design and Their Anti-Collagenase and Elastase Properties

2020 ◽  
Vol 10 (19) ◽  
pp. 7002
Author(s):  
Nur Fauwizah Azahar ◽  
Siti Salwa Abd Gani ◽  
Uswatun Hasanah Zaidan ◽  
Paiman Bawon ◽  
Mohd Izuan Effendi Halmi
Keyword(s):  
High Performance ◽  
Hplc Analysis ◽  
Antioxidant Activities ◽  
Control Point ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Leaf Extracts ◽  
Set Up ◽  
Rutin And Quercetin

In this study, a simplex-centroid mixture design (SCMD) approach was used to select the optimal proportions of three different Melastomataceae leaves species (M. malabathricum, M. decemfidum, and M. hirta) extracts to determine the optimum antioxidant activities of total phenolic compound (TPC) and ABTS (2, 2′-azino-bis (ethylbenzthiazoline-6-sulfonic acid)) radical-scavenging activities. Twelve experimental designs were set up, consisting of points that were equally weighted mixtures of 0 to 1 components, which were pure blends (1, 0, …, 0), binary blends (1/2, 1/2, 0, …, 0), tertiary blends (1/3, 1/3, 1/3, 0, …, 0), and a control point. The in vitro anti-elastase and collagenase activities were evaluated in order to determine the anti-aging efficacy of the optimized mixture extracts. A high-performance liquid chromatography (HPLC) analysis was employed to identify the flavonoid content (rutin and quercetin) present in the optimized mixture extracts. The results showed that the best proportions of the optimum phenolic compounds and ABTS activity corresponded to 30%, 40%, and 30% of M. malabathricum, M. hirta, and M. decemfidum leaf extracts, respectively. The in vitro anti-collagenase and elastase activity evaluation of the optimized mixture extracts showed 70% inhibition against both elastase and collagenase enzymes. The HPLC analysis revealed two flavonoids (rutin and quercetin) at retention time 7.770 and 8.769 min, respectively, in the mixture extracts. This study suggests the potential exploitation of mixtures of Melastomataceae leaves (M. malabathricum, M. decemfidum, and M. hirta) as cosmetic ingredients for antioxidant and anti-wrinkles applications.

Insecticidal Activities of the Leaf Extract of the Invasive Alien Plant, Chromolaena odorata (L.) (Asteraceae) Against Macrotermes species (Termites)

2019 ◽  
Vol 35 (1) ◽  
pp. 145-153
Author(s):  
O. Uyi, ◽  
I.G. Amolo ◽  
A.D. Adetimehin
Keyword(s):  
Leaf Extract ◽  
Insect Pests ◽  
Chromolaena Odorata ◽  
Leaf Extracts ◽  
Alien Plant ◽  
Biological Efficacy ◽  
Invasive Alien Plant ◽  
Impregnation Technique ◽  
Aqueous Leaf Extract ◽  
Worker Caste

Several studies have demonstrated the biological efficacy of leaf, stem and root powders or extracts of Chromolaena odorata (L.) King and Robinson against insect pests but those that are focused on the biological efficacy of aqueous leaf extracts against Macrotermes species are scanty. Current management of termites with synthetic insecticides is being discouraged due to human and environmental hazards. Therefore, the insecticidal effectiveness of aqueous leaf extract C. odorata against Macrotermes species was investigated. Five concentrations (0, 2.5, 5.0, 7.5 and 10.0% (w/v)) of the aqueous extract of C. odorata plant were evaluated for repellency and toxicity on the worker caste of Macrotermes species following standard procedures. The filter paper impregnation technique was used for the bioassay. Percentage repellency was monitored for 30 minutes and mortality recorded at 12, 24 and 36 hours post exposure. The leaf extract of C. odorata significantly repelled 95% of Macrotermes species at the highest concentration of 10% (w/v) after 30 minutes post treatment exposure. Mortality of Macrotermes species was independent of treatment concentration, but dependent on duration of exposure. All treatment concentrations of aqueous leaf extract of C. odorata caused significant mortality against Macrotermes species ranging between 94% and 98% compared to the control; indicating very great potential for adoption and use in the management of Macrotermes species.

scholarly journals Antioxidant and antidiabetic properties of isolated fractions from methanolic extract derived from the whole plant of Cleome viscosa L.

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Yarrappagaari Suresh ◽  
Gutha Rajasekar ◽  
Thopireddy Lavanya ◽  
Benne Lakshminarsimhulu ◽  
Kesireddy Sathyavelu Reddy ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
Antidiabetic Activity ◽  
Total Phenolic ◽  
Whole Plant ◽  
Glucose Diffusion ◽  
Ft Ir ◽  
Study Support ◽  
Important Medicinal Plant ◽  
Cleome Viscosa

Abstract Background Cleome viscosa is considered as an important medicinal plant extensively used in India, China, Bangladesh, and a few countries in Africa. In the present study, in vitro anti-radical and antidiabetic potential of isolated fractions of methanolic extract of C. viscosa whole plant (MeCV) has been investigated. The identification of polyphenols and their related functional groups in the bioactive fraction was categorized by using HPLC and FT-IR. Results The total phenolic and flavonoid contents of F-D were higher than those of F-A, F-B, and F-C. The F-D exhibited superior antioxidant capacity when compared with the remaining three fractions. However, the F-D showed the highest glucose diffusion activity over the 30 min–27 h incubation period and also inhibited both α-glucosidase and α-amylase enzyme activity. HPLC analysis revealed the presence of the two known compounds (protocatechuic acid hexoside, rutin) and six unknown compounds in the F-D. FTIR spectrum confirmed the presence of phenol group. Conclusion The isolated F-D obtained from MeCV displayed superior antioxidant and antidiabetic activity which indicate the presence of polyphenols in the fraction. The data findings of the present study support the traditional uses of the whole plant of C. viscosa as a promising natural source of biological medicines for oxidative stress and diabetes.

scholarly journals Cytotoxic Minor Piericidin Derivatives from the Actinomycete Strain Streptomyces psammoticus SCSIO NS126

Marine Drugs ◽  
2021 ◽  
Vol 19 (8) ◽  
pp. 428
Author(s):  
Kunlong Li ◽  
Ziqi Su ◽  
Yongli Gao ◽  
Xiuping Lin ◽  
Xiaoyan Pang ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Structural Diversity ◽  
Mangrove Sediment ◽  
Cytotoxic Activities ◽  
Spectroscopic Methods ◽  
Biosynthetic Pathways ◽  
Fermentation Conditions ◽  
Lead Compounds ◽  
Ic50 Values ◽  
Actinomycete Strain

The mangrove-sediment-derived actinomycete strain Streptomyces psammoticus SCSIO NS126 was found to have productive piericidin metabolites featuring anti-renal cell carcinoma activities. In this study, in order to explore more diverse piericidin derivatives, and therefore to discover superior anti-tumor lead compounds, the NS126 strain was further fermented at a 300-L scale under optimized fermentation conditions. As a result, eight new minor piericidin derivatives (piericidins L-R (1–7) and 11-demethyl-glucopiericidin A (8)) were obtained, along with glucopiericidin B (9). The new structures including absolute configurations were determined by spectroscopic methods coupled with experimental and calculated electronic circular dichroism. We also proposed plausible biosynthetic pathways for these unusual post-modified piericidins. Compounds 1 and 6 showed selective cytotoxic activities against OS-RC-2 cells, and 2–5 exhibited potent cytotoxicity against HL-60 cells, with IC50 values lower than 0.1 μM. The new piericidin glycoside 8 was cytotoxic against ACHN, HL-60 and K562, with IC50 values of 2.3, 1.3 and 5.5 μM, respectively. The ability to arrest the cell cycle and cell apoptosis effects induced by 1 and 6 in OS-RC-2 cells, 2 in HL-60 cells, and 8 in ACHN cells were then further investigated. This study enriched the structural diversity of piericidin derivatives and confirmed that piericidins deserve further investigations as promising anti-tumor agents.

scholarly journals Potential nursing effects of Parkia platycephala Benth. (Fabaceae) in a disturbed Brazilian Savanna area undergoing restoration

2022 ◽  
Vol 17 (12) ◽  
Author(s):  
Eiderson Silva Cabral ◽  
Maíra Jéssica Gomes de Souza ◽  
Rafael José De Oliveira ◽  
Ronaldo Rodrigues Coimbra ◽  
Fernando Mayer Pelicice ◽  
...  
Keyword(s):  
Brazilian Savanna ◽  
Laboratory Studies ◽  
Leaf Extracts ◽  
Shrub Species ◽  
Initial Development ◽  
Aqueous Leaf Extract ◽  
Plant Assemblages ◽  
Surrounding Areas ◽  
Shading Plant ◽  
Dipteryx Alata

We evaluated the influence of Parkia platycephala on plant assemblages under its crown and surrounding areas in a disturbed Brazilian Savanna, as well as the effects of aqueous extracts of its leaves on the germination and development of three species, under the hypothesis that P. platycephala might work as a nurse species. Eleven areas of direct (ADIs) and indirect (AIIs) influence of P. platycephala and 11 control areas (COs) were delineated. All tree and shrub species present in these areas, including seedlings, were sampled. Richness, composition and abundance of woody taxa were determined. Laboratory studies analyzed the effects of P. platycephala aqueous leaf extracts on the germination and initial development of Dipteryx alata, Enterolobium gummiferum and Magonia pubescens, which in the field exhibited different abundance levels under its crown. Regarding plant assemblages, no differences in terms of richness and abundance of woody taxa were detected among the areas. However, we recorded a gradient of species composition and abundance ranks from ADI to CO areas. The number of seedlings also differed, with higher values near P. platycephala. Soil characteristics were similar among areas, but shading, plant height and diameter differed. The aqueous leaf extract at 25% provided the best germination of M. pubescens. The extract at 75% favored the initial development of this species in terms of root length. These results indicate that the presence of P. platycephala affects the structure of neighboring plant assemblages, possibly working as a facilitator for some species in areas undergoing restoration.

scholarly journals Histopathological Studies on the Effects of Chloroform and Methanolic Extracts of Ilex kudingcha in Trypanosoma brucei Infected Albino Wistar Rats

2018 ◽  
Vol 04 ◽  
pp. 50
Author(s):  
Olajoju. T. Soniran ◽  
Kalu. K. Ngele ◽  
Christopher. O. Alisa ◽  
Damilola. A. Omoboyowa ◽  
Nnabude. H. Agu ◽  
...  
Keyword(s):  
Trypanosoma Brucei ◽  
Wistar Rats ◽  
Methanolic Extract ◽  
Phytochemical Analysis ◽  
Diminazene Aceturate ◽  
Leaf Extracts ◽  
Standard Drug ◽  
Phytochemical Study ◽  
Reference Drug ◽  
Histopathological Studies

Histopathological studies of the effects of chloroform and methanolic leaf extracts of Ilex kudingcha in Trypanosoma brucei infected albino wistar rats were investigated. The toxicity and phytochemical study were also carried out using standard protocol. T. brucei infected animals were administered orally with 200 and 400 mg/kg b.w. of the extracts and 3.5 mg/kg b.w. of the standard drug (diminazene aceturate). Results on acute toxicity studies (LD50) revealed no sign of lethality up to the dose of 5,000 mg/kg body weight but the liver and kidney histology of infected animals treated with 5,000 mg/kg b.w. of I. kudingcha extracts were observed to be hepatotoxic and nephrotoxic. The methanol extracts showed appreciably high in vivo anti-trypanosomal activities compared to the reference drug. Histological examination of the organs revealed serious pathological lesions in the liver of the infected animals without treatment (negative control). In the positive control animals (infected animals administered standard drug), mild multifocal aggregate of inflammatory leucocytes was observed. In the other experimental animals, no pathological lesion was observed in the liver, kidney, brain, and heart of infected animals treated with the methanolic extract and combined methanol and chloroform extracts. The effectiveness of the methanolic extract at reducing the lesions caused by the parasite is the same compared with the standard drug. Phytochemical analysis of the plant extracts showed that methanol extract contained appreciable high levels of alkaloids, saponin, tannins, phenol, and glycoside while flavonoid was not detected. Hence, the curative properties of methanolic extract of I. kudingcha as observed in the organs indicate its anti-trypanosomal properties but it should be consumed at minimal doses.

scholarly journals Evaluation of Herbal Extract of Gentiana diffusa for Antianxiety Activity

2021 ◽  
Vol 10 (5) ◽  
Author(s):  
Sudipta Dakua ◽  
Rakesh Gawaly ◽  
Pratyush Jain ◽  
Alok Pal Jain
Keyword(s):  
Methanolic Extract ◽  
Positive Control ◽  
Herbal Extract ◽  
Leaf Extracts ◽  
Active Constituent ◽  
Plus Maze ◽  
Anxiolytic Agent ◽  
Commercial Source ◽  
Higher Doses ◽  
Different Doses

The present study was designed to authenticate the anti-anxiety activity (by using elevated plus maze model) of methanolic extract of the leaves of Gentiana diffusa. by authors Swiss Albino mice were treated with different doses of the leaf extracts (200 mg / kg p.o.) and Diazepam (2mg/ kg, p.o) was used as a positive control. Results of study show that methanolic extract in higher doses (200 mg/kg) possesses marked anti-anxiety activity and was comparable to the effect produced by diazepam. The plant can be developed as a commercial source of anxiolytic agent. Further studies are in process to isolate the active constituent responsible for this activity and mechanism of action. Keywords: Leaves, Methanol, Anxiety, Diazepam

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