Wyniki wyszukiwania - Biblioteka Nauki

1

Seasonality study of extracts from leaves of Thuja occidentalis L.

100%

Chajduk M. , Golebiowski M.

Acta Biologica Cracoviensia. Series Botanica

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2022

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tom 64

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nr 1

2

Foliar Application of Moringa Leaf Extracts Affects Growth, Yield and Mineral Composition of Pepper (Capsicum Annuum L.) under Greenhouse Conditions

100%

Mehdawe A. , Mahadeen A. , Al-Ramamneh E. A.-D.

Journal of Ecological Engineering

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2023

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tom Vol. 24, nr 6

329--337

EN

The higher cost and increased pollution caused by the intensive use of fertilizers in growing vegetables necessitates the use of safer organic bio-stimulants to partially substitute fertilizers. Analyses of leaf extracts of Moringa oleifera and Moringa peregrina in the present study confirmed their rich content of diverse compounds and elements and indicated that except for Mg and Ca, M. oleifera outyielded M. peregrina for the measured elements and bio-constituents. Foliar spray of leaf extracts of M. oleifera and M. peregrina at (1:10, 1:20, 1:30 extract: distilled water) was attempted on pepper plants under greenhouse conditions every two weeks for five times starting 30 days after transplanting date. Enhanced vegetative growth parameters (plant height, number of branches and leaves, plant fresh and dry weights, leaf area, and leaf chlorophyll-content) and better yield attributes (Fruit yield·plant-1 and hectare-1) were obtained by foliar spraying of plants with the concentrated extract 1:10 of moringa species. The vegetative growth of pepper plants was significantly influenced by extract concentration, moringa type·concentration, but not for moringa type (P≤0.05). However, moringa type, extract concentration and their interactions significantly affected pepper fruit-yield·plant-1, pepper fruit-yield·ha-1 and mineral content of pepper leaves (P≤0.05). Irrespective of moringa type, the highest extract concentration 1:10 resulted in the highest yield ·plant-1 (1.68 kg) and yield·hectare-1 (16.88 ton) of peppers. The present study highlighted the potential of using extracts of moringa trees in organic farming.

3

DPPH radical scavenging activity and phenolic compound content in different leaf extracts from selected blackberry species

86%

Gawron-Gzella A. , Dudek-Makuch M. , Matlawska I.

Acta Biologica Cracoviensia. Series Botanica

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2012

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tom 54

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nr 2

EN

We used DPPH scavenging assays to study the antioxidant activity of three native Polish species of blackberry leaves (Rubus kuleszae Ziel., R. fabrimontanus (Sprib.) Sprib. and R. capitulatus Utsch.). All the studied extracts (methanolic, water, methanolic-water) showed high DPPH free radical scavenging activity (IC50 450.0–186.0 μg/ml). The most effective of the studied species was Rubus kuleszae. Total content of phenolic compounds (70.50–136.04 mg GAE/g) and phenolic acids (14.70–38.26 mg CAE/g) was determined spectrophotometrically. Antioxidant activity correlated positively with total content of phenolic compounds and phenolic acids.

4

Pharmacognostical and preliminary Phytochemical Screening of the Leaf extract of Jasminum auriculatum Vahl

86%

Gowdhami T. , Rajalakshmi A. K. , Sugumar N.

International Letters of Natural Sciences

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2015

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tom 43

EN

Jasminum auriculatum belonging to the family Oleaceae are reported to have good medicinal values in traditional system of medicines. The present study deals with pharmacognostical examination of morphological and microscopical characters and phytochemical investigations of Jasminum auriculatum leaves including determination of loss on drying, ash values and extractive values. The preliminary phytochemical screening of powdered drug was also carried out, the qualitative chemical examinations revealed the presence of various phytoconstituents like alkaloids, steroids, terpenoids, saponins, carbohydrates, Glycosides, protein, mucilages, phenols ,tannins and flavonoids.

5

Bio-efficacy of some plant leaf extracts against mustard aphid, Lipaphis erysimi Kalt. on Indian mustard, Brassica juncea

86%

Ali A. , Rizvi P. Q. , Khan F. R.

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tom 50

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nr 2

130-132

EN

The bio-efficacy of four plant leaf extracts viz., apple of sodom, Calotropis procera Aiton; Mexican poppy, Argemone mexicana Linnaeus; Mexican marigold, Tagetes minuta Linnaeus and Indian neem, Azadirachta indica were tested against mustard aphid, Lipaphis erysimi on Indian mustard, Brassica juncea. The highest per cent aphid reduction during first, second and third spray were 28.79, 40.52 and 59.32 at 1 : 10 g/ml; 34.70, 44.49 and 66.14 at 1 : 5 g/ml and 53.88, 64.84 and 100.00 at 1 : 2.5 g/ml with Indian neem. However, Mexican marigold was also effective at highest concentration (1 : 2.5 g/ml) and reduced 96.38 per cent L. erysimi. All the treatments of plant leaf extracts showed insecticidal activity, but Indian neem followed by Mexican marigold reduced the aphid population to a great extent.

PL

Badano skuteczność biologiczną wyciągów z liści roślin: Calotropis procera Aiton, Argemone mexicana Linnaeus, Tagetes minuta Linnaeus, Azadirachta indica, przeciwko mszycy kapustnicy wielożernej Lipaphis erysimi, na gorczycy indyjskiej, Brassica juncea. Najwyższy procent redukcji mszyc podczas pierwszego, drugiego i trzeciego opryskiwania wynosił: 28,79, 40,52 i 59,32, przy stężeniu 1:10 g/ml; 34,70 oraz 44,79 i 66,14, przy stężeniu 1:5 g/ml i 53,88, 64,84 i 100,00, przy stężeniu 1:2,5 g/ml dla A. indica. Jednak T. minuta byļ także skuteczny przy najwyższym stężeniu - 1:2,5 g/ml i redukował 96,38% L. rysimi. Wszystkie Zabiegi wyciągami z liści wykazywały ektywność owadobójczą, ale A. indica, a następnie T. minuta redukowały populację mszyc w największym stopniu.

6

Toxic effects of the crude methanolic extract of Austroplenckia populnea leaves and fractions on the growth of Spodoptera frugiperda

86%

Pires W. , Arini L. E. S. , Menezes A. C. S. , Jesus F. G. , Rocha E. C. , Araujo M. S.

Acta Agrobotanica

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2023

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tom 76

7

Acaricidal, ovicidal, and repellent effects of Tagetes patula leaf extract against Tetranychus urticae Koch (Acari: Tetranychidae)

86%

Ismail M. S. M. , Tag H. M. , Rizk M. A.

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8

Comparison of phenolic profile and in vitro antioxidant capacity of Sorbus domestica L. leaf samples from Poland and Croatia

86%

Rutkowska M. , Dybicka M. , Olszewska M. A.

Acta Biologica Cracoviensia. Series Botanica

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2019

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tom 61

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nr 1

9

Immunomodulatory activity of ethanolic leaf extract of Terminalia chebula

72%

Vadlamani S. , Bala Durga D. K. A. , Kumar B. V.

International Letters of Natural Sciences

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2015

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tom 47

EN

Terminalia chebula, a plant rich with phytochemicals, was selected in the present investigation for evaluating its immunomodulatory activities. Extract of the leaves were prepared in various solvents. Ethanolic extract was found to contain significant amount of phytochemicals. Hence, it was selected to study immunomodualtory activity. Silica gel column chromatography of ethanolic extract was performed. The fractions were further subjected to TLC and most active fractions were administrated to balb/C mice for evaluating immunomodulatory studies. Out of the five fraction (S1 – S5), S3 was found to possess immunostimulant activity. Provision of Ethanol Extracts of Terminalia chebula on balb/C mice can increase the antibody titers IgM and IgG.

10

Comparison of phenolic compounds, antioxidant and cytotoxic activity of extracts prepared from Japanese quince (Chaenomeles japonica L.) leaves

72%

Chojnacka K. , Sosnowska D. , Polka D. , Owczarek K. , Gorlach-Lira K. , De Verasa B. O. , Lewandowska U.

Journal of Physiology and Pharmacology

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2020

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tom 71

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nr 2

11

Antidermatophytic activity of ethanolic leaves extract of Limonia acidissima Groff.

72%

Shivakumar Singh P. , Vidyasagar G. M.

International Letters of Natural Sciences

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2015

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tom 39

EN

In the present study Limonia acidissima Groff. ethanolic leaves extract was used for the detection of its antidermatophytic assay. It results broad spectrum of antifungals and antibacterial. Where the antimycotic activity against Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporium gypseum, Candida albicans and four Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa were more pronounced. The effective antidermatophytic activity observed against M. gypseum, T. tonsurans, E. coli and B. subtilis. Minimum Inhibitory Concentration of all the test microbes was determined using broth dilution technique. MFC, MBC also standardized. Preliminary Phytochemical tests were carried for the revealing basics antimicrobial responsible molecules of secondary metabolites.

12

Phytochemical characterization by GC-MS and in vitro evaluation of antiproliferative and antimigratory studies of Leucas aspera leaf extracts on MDA-MB-231 cell line

72%

Mahaboob Begum S.M. F. , Sankarram M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2024

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tom 105

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nr 1

13

Antimycotic activity of low polar petroleum ether and interpolar methanolic young leaf extracts of Solanum nigrum L.

72%

Shivakumar Singh P. , Vidyasagar G. M.

International Letters of Natural Sciences

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2015

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tom 04

EN

Antimycotic activity of Petroleum ether and 98% methanolic young leaf soxhlet extract of Solanum nigrum (Solanaceae) was evaluated against dermatophytic fungi namely, Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporium gypseum, Candida albicans, and bacteria like, Staphylococcus aureus, Psudomonas aeruginosa, Bacillus subtilis, Escherichia coli. The maximum activity was observed in interpolar methanolic extract when compared to low polar petroleum ether extract. The minimum inhibitory concentration, minimum fungicidal concentration and minimum bactericidal concentration were determined against all the test strains. This study provides a basis for the isolation and purification of anti-dermatophytic compounds from the young leaves of S. nigrum.

14

Screening of different leaf extracts of Cassia fistula Linn for investigation of hypolipidemic activity in two different rat models

72%

Sutar G. V. , Dass K. , Einstein J. W.

International Letters of Natural Sciences

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2015

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tom 03

EN

The present investigation was carried out to evaluate the hypolipidemic activity of methanolic and aqueous leaf extracts of Cassia fistula (CF) Linn (Family: Fabaceae) on atherogenic diet (2% cholesterol, 1% Choline Chloride and 2% Lard) induced Male Sprauge-Dawley rats for the period of 21 days. The rats receiving the treatment with leaf methanol and aqueous extract of CF showed significant (P < 0.001) reduction in total cholesterol (TC), triglycerides (TG), High density lipoprotein (HDL), lipid peroxidation (LPO) and other parameters at dose dependent manner but the effect was less than the standard drug Atorvastatin. The results revealed the effectiveness of CF plant against hyperlipidemic activity.

15

Evaluation of antidote potential of methanol leaf extract of Bauhinia monandra on heparin-induced thrombocytopenia in mice

72%

Nworie K. M. , Okorie A. N. , Ebere D. N. , Obike O. C.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2019

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tom 100

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nr 1

16

The effects of bamboo leaf extract on growth performance, antioxidant traits, immune function and lipid metabolism of weaning piglets

72%

Zhang J. , Wang J. , Zhang L. , Wang T.

Journal of Animal and Feed Sciences

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2013

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tom 22

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nr 3

EN

The aim of this study was to evaluate the effects of dietary supplementation of bamboo leaf extract (BLE) on the growth performance, antioxidant traits, immune function, and lipid metabolism of weaning piglets. After weaning at 21 days, two hundred and forty healthy piglets (Large White × Landrance) were randomly assigned to 4 treatments with 6 pens and 10 piglets per pen. The control group (Ctr) received a maize-soyabean based diet, and the test groups received the control diet plus 0.5%, 1%, or 2% (w/w) BLE, respectively. The experiment was carried out for 5 weeks. At the end of it, average daily feed intake in the 1% BLE group was decreased (p < 0.05). Plasma concentrations of malondialdehyde were decreased with supplementation of 1% and 2% BLE. Immunoglobulin G concentrations and lysozyme activity in plasma were significantly increased in piglets supplemented with BLE. Diets with 1% and 2% BLE increased (p < 0.05) plasma concentrations of low density lipoprotein-cholesterol and reduced (P < 0.01) high density lipoprotein-cholesterol levels. Higher triglyceride concentrations were observed in the 0.5% (P < 0.01) and 2% (p < 0.05) BLE groups. In conclusion, these novel findings demonstrate that supplementation of BLE to the diet improved the antioxidant activity, immune function, and lipid metabolism of weaning piglets.

17

Chemical constituents of water hyacinth (Eichhornia crassipes) methanol leaf extract and its effect on selected enzymes of Periplaneta americana

72%

Adeleke G. E. , Adedosu O. T. , Ehigie L. , Adegbola P. I. , Olaniyi A. A. , Agoola T. O. , Ehigie A. F.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2020

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tom 101

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nr 4

18

Antibacterial activity of extracts of leaves of Nerium indicum in combination with antibiotics

72%

Vyas P. , Suthar A. , Joshi D.

International Letters of Natural Sciences

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2015

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tom 46

EN

Methanol and ethanol extract showed antibacterial activity in range of 0-11 at 10 mg/mL at against all tested bacterial species. Methanol extract with amoxicillin exhibited effective inhibition E. coli. This combination showed antagonistic effect against B. subtilis and S. aureus. Interaction of ethanol extract with amoxicillin also showed effective inhibition against E. coli and decreased activity against B. subtilis and S. aureus. Methanol extract did not show inhibition against P. aeruginosa but it enhanced activity of ciprofloxacin on combination. Ethanol extract also exhibited effective inhibition against P. aeruginosa on combination with ciprofloxacin. But antagonist effect was observed on interaction of both extract with ciprofloxacin against other bacterial species. Interaction of methanol and ceftazidime showed mostly decreased or indifferent effect against all bacterial species. Ethanol extract with ceftazidime resulted in higher inhibition against E. coli. Combination of methanol extract with erythromycin showed higher inhibition against E. coli and also very effective inhibition against S. aureus. This combination resulted in decreased activity against B. subtilis. Ethanol extract with erythromycin also showed synergistic effect against S. aureus and effective inhibition against E. coli. These results indicate that both methanol and ethanol extract has potential to enhance the combination effect with erythromycin against S. aureus and E. coli.

19

Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy

58%

Buhroo A. A. , Nisa G. , Asrafuzzaman S. , Prasad R. , Rasheed R. , Bhattacharyya A.

Journal of Plant Protection Research

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2017

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tom 57

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nr 2

EN

Th e present exploration is focused on the bio-fabrication of silver nanoparticles (Ag NPs) using Trichodesma indicum aqueous leaf extract as a reducing agent. Th e synthesized Ag NPs were productively characterized by UV-vis spectroscopy, XRD, and TEM studies. Th e photosynthesis of Ag NPs was done at room temperature for 24 h and at 60°C. Th e green synthesis of spherical-shaped Ag NPs bio-fabricated from T. indicum with a face centred cubic structure showed average particle sizes of 20–50 nm, which is inconsistent with the particle size calculated by the XRD Scherer equation and TEM analysis. We further explored the larvicidal effi cacy of biosynthesized Ag NPs with leaf extracts of T. indicum against Mythimna separata. Th e results showed that Ag NPs (20–50 nm) of T. indicum possess good larvicidal activity against M. separata with an LC50 of 500 ppm. Th us, we can advocate that Ag NPs of 20–50 nm size extracted from T. indicum may be considered in the pest management programme of M. separata in future.

20

CD39/NTPDase-1 expression and activity in human umbilical vein endothelial cells are differentially regulated by leaf extracts from Rubus caesius and Rubus idaeus

58%

Dudzinska D. , Luzak B. , Boncler M. , Rywaniak J. , Sosnowska D. , Podsedek A. , Watala C.

Cellular and Molecular Biology Letters

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2014

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tom 19

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nr 3

EN

Many experimental studies have demonstrated the favorable biological activities of plants belonging to the genus Rubus, but little is known of the role of Rubus leaf extracts in the modulation of the surface membrane expression and activity of endothelial apyrase. The aim of this study was to assess the influence of 1–15 μg/ml Rubus extracts on CD39 expression and enzymatic activity, and on the activation (ICAM-1 expression) and viability of human umbilical vein endothelial cells (HUVEC). The polyphenolic contents and antioxidative capacities of extracts from dewberry (R. caesius L.) and raspberry (R. idaeus L.) leaves were also investigated. The techniques applied were flow cytometry (endothelial surface membrane expression of ICAM-1 and CD39), malachite green assay (CD39 activity), HPLC-DAD (quantitative analysis of polyphenolic extract), ABTS, DPPH and FRAP spectrometric assays (antioxidant capacity), and the MTT test (cell viability). Significantly increased CD39 expressions and significantly decreased ATPDase activities were found in the cells treated with 15 μg/ml of either extract compared to the results for the controls. Neither of the extracts affected cell proliferation, but both significantly augmented endothelial cell ICAM-1 expression. The overall antioxidant capacities of the examined extracts remained relatively high and corresponded well to the determined total polyphenol contents. Overall, the results indicate that under in vitro conditions dewberry and raspberry leaf extracts have unfavorable impact on endothelial cells.