scholarly journals EFEITOS ALELOPÁTICOS DAS FLORES DA Acacia podalyriaefolia A. CUNN.

2003 ◽  
Vol 4 (2) ◽  
Author(s):  
Cláudia Alexandra De ANDRADE ◽  
Marilis Dallarmi MIGUEL ◽  
Obdúlio Gomes MIGUEL ◽  
Marlene de Lourdes FERRONATO ◽  
Cristina PEITZ ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Significant Influence ◽  
Lactuca Sativa ◽  
Ethanolic Extract ◽  
Allelopathic Potential ◽  
Allelopathic Activity ◽  
Allelopathic Effects

Foi investigado o potencial alelopático das flores de Acacia podalyriaefolia A. Cunn.. O estudo da atividade alelopática demonstrou que o extrato etanólico bruto e suas frações diclorometano e acetato de etila tem influência significativa sobre a germinação e crescimento das radículas e hipocótilos de Lactuca sativa. O efeito verificado foi de ativação da germinação das sementes, porém sem o desenvolvimento dos folíolos tornando as mudinhas inviáveis. ALLELOPATHIC EFFECTS FROM FLOWERS of Acacia podalyriaefolia A. CUNN. Abstract The allelopathic potential from the flowers of Acacia podalyriaefolia A. Cunn. was investigated. The study of the allelopathic activity have demonstrated that the crude ethanolic extract and its fractions dichloromethane and ethyl acetate have significant influence in the germination and in the growth of radicle and of the hypocotyls from the Lactuca sativa. The effect was the activation of the germination of the seeds, although the developing of the follicles was prejudiced turning the saplings unviable.

scholarly journals Allelopathic Potential of Ethanolic Extract and Phytochemical Analysis of Paspalum maritimum Trind

2019 ◽  
Vol 37 ◽  
Author(s):  
J.C. PEREIRA ◽  
C.L.A. PAULINO ◽  
L. ENDRES ◽  
A.E.G. SANTANA ◽  
F.R.S. PEREIRA ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Condensed Tannins ◽  
Ethanolic Extract ◽  
Phytochemical Analysis ◽  
Allelopathic Effect ◽  
Active Fraction ◽  
Allelopathic Potential ◽  
Plant Parts ◽  
Allelopathic Effects ◽  
Donor Species

ABSTRACT: Allelopathy is defined as the ability of certain plants and microorganisms to interfere with the metabolism of other species through substances released into the environment, being an alternative to control weeds and diseases. In this context, this study aimed to evaluate the allelopathic potential and identify groups of secondary metabolites of Paspalum maritimum Trind. The species Lactuca sativa, Digitaria insularis, Emilia coccinea, and Portulaca oleracea were used as recipient plants. The ethanolic extract was obtained from shoot and root of donor species to evaluate the allelopathic potential. Potentially allelopathic effects were evaluated by means of germination tests, germination speed index, and initial seedling growth. A phytochemical analysis of the extract was also performed to identify the secondary metabolites. The ethanolic extract from both plant parts had an allelopathic effect on recipient species. The presence of condensed tannins, chalcones and aurones, flavonones, steroids, and saponins were detected in the most active fraction of the shoot of P. maritimum.

scholarly journals ESTUDO FITOQUÍMICO, ALELOPÁTICO E ANTIMICROBIANO DE Acacia longifolia Andr. (Willd.)

2003 ◽  
Vol 4 (1) ◽  
Author(s):  
Cristina PEITZ ◽  
Vitor Alberto KEBER
Keyword(s):  
Ethyl Acetate ◽  
Fusarium Oxysporum ◽  
Lactuca Sativa ◽  
Ethanolic Extract ◽  
Ethyl Acetate Fraction ◽  
Preparative Hplc ◽  
Toxic Activity ◽  
1H And 13C Nmr ◽  
Acacia Longifolia ◽  
High Inhibition

Acacia longifolia Andr.( Willd.), é uma espécie nativa da Austrália, utilizada como ornamento e fixadora de dunas. Por meio de CLAE semi-preparativa realizada com a gração de acetato de etila das flores foi isolada uma aurona. Esta foi identificada por métodos espectroscópicos de UV e RMN de 1H e 13C, como aureusidina-4-O-galactosídeo. Para diferenciar este composto de aureusidina-4- O- glucosídeo, foi realizada uma hidrólise, seguida de CCD comamostras autênticas dos açucares. O estudo da atividade alelopática demonstrou que a fração clorofórmio das flores apresentou elevada inibição sobre a germinação das sementes e o crescimento da radícula e do hipocótilo de Lactuca sativa. O estudo da atividade antimicrobiana revelou que o extrato bruto etanólico, a fração de acetato de etila, e o extrato hidroalcoólico remanescente das folhas, nas concentrações de 1000 mg apresentaram ação antibacteriana sobre o crescimento de Saphylococcus aureus. A fração acetato de etila das flores na concentração de 1000 ppm demonstrou moderada inibição sobre o crescimento micelial de Fusarium oxysporum e um efeito menos pronunciado sobre Cylindrocladium spathulatum. PHYTOCHEMISTRY, ALLELOPATHIC AND ANTI-MICROBIAL STUDY OF Acacia longifolia Andr. (Willd.) Abstract Acacia longifolia (Andr.) Willd., is native from Australia usually used for garden decoration or to fix sand hills. Through semi-preparative HPLC applied to ethyl acetate fraction obtained froman ethanolic extract of its flowers is was isolated an aurone which was identified as auteusidin-4-galactoside, using UV, 1H and 13C NMR. To distinguish this compound fromcernuoside (aureusidin-4-glucoside) a hydrolysis followed by TLC with authentic samples of sugars was performed. It was also found an allelopathic activity of the choroform fraction obtained from the same ethanolic extract of flowers. The effect found was a high inhibition of the germination of the seeds and of the radicle and hypocotyl growing of Lactuca sativa. In other study it was found anti microbial activity against Saphylococcus aureus. The activity was found with 1000 mg of the ethanolic extract from leaves, its ethyl acetate fraction and the hydro-ethanolic ending fraction. Studying fungi toxic activity against Fusarium oxysporum and Cylindrocladium spathulatum it was found moderate inhibitor activity of the mycelia growing of the first and lower activity against the second.

scholarly journals Allelopathic effects of Psychotria viridis Ruiz & Pavon on the germination and initial growth of Lactuca sativa L.

2016 ◽  
Vol 9 (1) ◽  
pp. 204
Author(s):  
Amanda O. Andrade ◽  
Maria A. P. Da Silva ◽  
Alison H. De Oliveira ◽  
Marcos Aurelio F. Dos Santos ◽  
Lilian C. S. Vandesmet ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Lactuca Sativa ◽  
Ethanol Extract ◽  
Ethyl Acetate Fraction ◽  
Control Group ◽  
Initial Growth ◽  
Negative Effects ◽  
Combined Action ◽  
Allelopathic Effects ◽  
Ethanol Extracts

The effects of aqueous and ethanol extracts and leaf fractions of <em>Psychotria viridis</em> Ruiz &amp; Pavon (chacrona) at different concentrations on the germination and initial growth of <em>Lactuca sativa</em> L. were tested, and the phenolic and flavonoid compounds of these extracts and fractions were assessed. The bioassays consisted of the following treatments: crude aqueous extract (CAE) at 25, 50, 75 and 100% concentration, crude ethanol extract (CEE) and ethyl acetate, dichloromethane and methanol fractions at 6.25, 12.5, 25, 50 and 100% concentration and a control group. All treatments consisted of five replicates. The CAE, CEE and the ethyl acetate fraction of <em>P. viridis</em> caused both positive and negative effects on the seeds and seedlings of <em>L. sativa</em>.<em> </em>By contrast, the dichloromethane and methanol fractions only caused negative effects on <em>L. sativa</em>. The following compounds were identified in the extracts and fractions: gallic acid, chlorogenic acid, caffeic acid, ellagic acid, catechin, orientin, vitexin, quercetin, apigenin, rutin and luteolin, and the presence of the alkaloid N,N-dimethyltryptamine (DMT) has also been reported in the literature. <em>P. viridis</em> had allelopathic effects in all types of plant extracts and fractions tested, and one of these compounds or their combined action may account for these effects.

scholarly journals Allelopathic Potential of Aqueous Extract from Acacia melanoxylon R. Br. on Lactuca sativa

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1228
Author(s):  
M. Iftikhar Hussain ◽  
Mohamed A. El-Sheikh ◽  
Manuel J. Reigosa
Keyword(s):  
Phenolic Compounds ◽  
Aqueous Extract ◽  
Lactuca Sativa ◽  
Plant Biomass ◽  
Dry Weight ◽  
Fresh Weight ◽  
Allelopathic Potential ◽  
Acacia Melanoxylon ◽  
Root Dry Weight ◽  
Allelopathic Effects

We studied the polyphenol (phenolic compounds and flavonoids) composition and allelopathic effects of Acacia melanoxylon R. Br. aerial foliage aqueous extract (0%, 25%, 50%, 75% and 100%) on the seedling growth and plant biomass of the general biotest species, lettuce (Lactuca sativa). Mean leaf fresh weight, leaf dry weight, root fresh weight and root dry weight were decreased following exposure to Acacia aerial foliage, flowers aqueous extract (AFE) and phyllodes aqueous extract (APE) after 6 days. The reduction in plant dry biomass was more than 50% following treatment with AFE. The decrease in mean root length was approximately 37.7% and 29.20% following treatment with Acacia flowers extract (AFE) at 75% and 100% concentration, respectively. Root dry weight of L. sativa was reduced by both flowers and phyllodes extract. The reduction of protein contents in lettuce leaves following Acacia foliage extract proved that both AFE and APE exhibit polyphenols that causes the toxicity which led to decrease in leaf protein contents. High-Performance Liquid Chromatography (HPLC) was employed to analyze the A. melanoxylon flowers and phyllodes. A total of 13 compounds (accounting for most abundant compounds in flowers and phyllodes) include different flavonoids and phenolic compounds. The phytochemical compounds detected were: Gallic acid, protocatechuic acid, p-hydroxybenzoic acid, p-hydroxybenzaldehyde, vanillic acid, syringic acid, p-coumaric acid, and ferulic acid. The major flavonoid compounds identified include rutin, luteolin, apigenin, and catechin. Allelopathic effects of flower and phyllodes extracts from A. melanoxylon may be due to the presence of above compounds identified by HPLC analysis.

scholarly journals Potential of Thai Herbal Extracts on Lung Cancer Treatment by Inducing Apoptosis and Synergizing Chemotherapy

Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 231 ◽  
Author(s):  
Juthathip Poofery ◽  
Patompong Khaw-on ◽  
Subhawat Subhawa ◽  
Bungorn Sripanidkulchai ◽  
Apichat Tantraworasin ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Ethyl Acetate ◽  
Cancer Treatment ◽  
Apoptotic Cell ◽  
Primary Lung Cancer ◽  
A549 Cells ◽  
Cancer Cell Line ◽  
Ethanolic Extract ◽  
Lung Cancer Cell Line ◽  
Lung Cancer Treatment

The incidence of lung cancer has increased while the mortality rate has continued to remain high. Effective treatment of this disease is the key to survival. Therefore, this study is a necessity in continuing research into new effective treatments. In this study we determined the effects of three different Thai herbs on lung cancer. Bridelia ovata, Croton oblongifolius, and Erythrophleum succirubrum were extracted by ethyl acetate and 50% ethanol. The cytotoxicity was tested with A549 lung cancer cell line. We found four effective extracts that exhibited toxic effects on A549 cells. These extracts included ethyl acetate extracts of B. ovata (BEA), C. oblongifolius (CEA), and E. succirubrum (EEA), and an ethanolic extract of E. succirubrum (EE). Moreover, these effective extracts were tested in combination with chemotherapeutic drugs. An effective synergism of these treatments was found specifically through a combination of BEA with methotrexate, EE with methotrexate, and EE with etoposide. Apoptotic cell death was induced in A549 cells by these effective extracts via the mitochondria-mediated pathway. Additionally, we established primary lung cancer and normal epithelial cells from lung tissue of lung cancer patients. The cytotoxicity results showed that EE had significant potential to be used for lung cancer treatment. In conclusion, the four effective extracts possessed anticancer effects on lung cancer. The most effective extract was found to be E. succirubrum (EE).

scholarly journals Ethanolic Extracts of Adlay Testa and Hull and Their Active Biomolecules Exert Relaxing Effect on Uterine Muscle Contraction through Blocking Extracellular Calcium Influx in Ex Vivo and In Vivo Studies

Biomolecules ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 887
Author(s):  
Yun-Ju Huang ◽  
Yu-Chieh Chen ◽  
Hsin-Yuan Chen ◽  
Yi-Fen Chiang ◽  
Mohamed Ali ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Uterine Contraction ◽  
Calcium Influx ◽  
Ex Vivo ◽  
Ethanolic Extract ◽  
Ethyl Acetate Fraction ◽  
In Vivo Studies ◽  
Human Myometrium ◽  
Writhing Test

Dysmenorrhea is one of the most prevalent disorders in gynecology. Historically, adlay (Coix lachryma-jobi L. var. Ma-yuen Stapf.) has been explored for its anti-tumor, pain relief, anti-inflammatory, and analgesic effects. The aim of this study was to evaluate the effects of adlay seeds on the inhibition of uterine contraction and thus dysmenorrhea relief, in vitro and in vivo. HPLC-MS and GC were used to elucidate the ethyl acetate fraction of adlay testa ethanolic extract (ATE-EA) and ethyl acetate fraction of adlay hull ethanolic extract (AHE-EA). Elucidation yielded flavonoids, phytosterols, and fatty acids. Uterine leiomyomas and normal adjacent myometrial tissue were evaluated by oxytocin- and PG-induced uterine contractility. ATE-EA and AHE-EA suppressed uterine contraction induced by prostaglandin F2 alpha (PGF2α), oxytocin, carbachol, and high-KCl solution ex vivo. In addition, the external calcium (Ca2+) influx induced contraction, and increased Ca2+ concentration was inhibited by ATE-EA and AHE-EA on the uterine smooth muscle of rats. Furthermore, ATE-EA and AHE-EA effectively attenuated the contraction of normal human myometrium tissues more than adjacent uterine leiomyoma in response to PGF2α. 3,5,6,7,8,3′,4′-Heptamethoxyflavone and chrysoeriol produced a remarkable inhibition with values of IC50 = 24.91 and 25.59 µM, respectively. The experimental results showed that treatment with ATE-EA at 30 mg/day effectively decreased the writhing frequency both on the oxytocin-induced writhing test and acetic acid writhing test of the ICR mouse.

WOUND HEALING ACTIVITY OF THE WHOLE PLANT OF MOMORDICA CHARANTIA LINN. IN RATS

INDIAN DRUGS ◽  
2018 ◽  
Vol 55 (11) ◽  
pp. 64-70
Author(s):  
M.P Singh ◽  
◽  
Y.S. Sarangdevot ◽  
S.S. Sisodia
Keyword(s):  
Wound Healing ◽  
Ethyl Acetate ◽  
Petroleum Ether ◽  
Ethanolic Extract ◽  
Momordica Charantia ◽  
Alcohol Extract ◽  
Whole Plant ◽  
Healing Property ◽  
Aqueous Ethanolic Extract ◽  
Wound Healing Activity

The aim of the present study was to explore the effect of wound healing activity of the whole plant of Momordica charantia Linn. in rats. The effect of aqueous ethanolic extract of Momordica charantia Linn. (Family; Cucurbetaceae) was evaluated on resutured incision, granuloma pouch and excision wound models in rats. The wound healing activity was measured by the rate of wound contraction, skin breaking strength, weight of the granulation tissue, and collagen content. The concentrated ethyl alcohol extract was subject to fractionation by using petroleum ether (40-60o V/V), solvent ether, ethyl acetate, butanol, butanone, ethanol and methanol in succession. All the fractions were screened for wound healing property. The results of pharmacological activity led to the conclusion that the petroleum ether fraction exhibited more significant wound healing promotion property followed by solvent ether and butanone, from all the parameters studied. Ethyl acetate, ethanol and methanol fractions were least effective.

scholarly journals Composition of essential oil and allelopathic activity of aromatic water of Aster lanceolatus Willd: (Asteraceae)

2009 ◽  
Vol 45 (3) ◽  
pp. 469-474 ◽  
Author(s):  
Josiane de Fátima Gaspari Dias ◽  
Obdúlio Gomes Miguel ◽  
Marilis Dallarmi Miguel
Keyword(s):  
Essential Oil ◽  
Lactuca Sativa ◽  
Extraction Process ◽  
Caryophyllene Oxide ◽  
Allelopathic Activity ◽  
Germination And Growth

The essential oil obtained from flowers of Aster lanceolatus was submitted the CG-MS and presented as result thirteen substances with largest concentration; among them, the caryophyllene oxide with the larger one. The aromatic water obtained during the extraction process of this essential oil was forwarded to allelopathic test, and demonstrated to be capable to inhibit the germination and growth of Lactuca sativa.

scholarly journals ALLELOPATHIC POTENTIAL OF Cyperus rotundus L. EXTRACTS ON GERMINATION AND COWPEA SEEDLING ESTABLISHMENT

Nativa ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 261
Author(s):  
João Alves Ferreira Pereira ◽  
Tatiana Maria da Silva ◽  
Andreza Raquel Barbosa de Farias ◽  
Alexandre Bosco de Oliveira
Keyword(s):  
Seed Germination ◽  
Vigna Unguiculata ◽  
Early Growth ◽  
Shoot Length ◽  
Cyperus Rotundus ◽  
Control Treatment ◽  
Root Weight ◽  
Allelopathic Potential ◽  
Germination Speed ◽  
Allelopathic Effects

POTENCIAL ALELOPÁTICO DE EXTRATOS DE Cyperus rotundus L. NA GERMINAÇÃO E ESTABELECIMENTO DE PLÂNTULAS DE FEIJÃO-CAUPI Este trabalho investigou os efeitos alelopáticos de extratos de Cyperus rotundus L. na germinação de sementes e crescimento inicial das plântulas de Vigna unguiculata L. Walp. Extratos alcoólicos nas concentrações 0; 1,5%; 3,0%; 4,5%; 6,0%; 7,5% e 9,0%, obtidos a partir da trituração de folhas de C. rotundus L. foram utilizados para umedecimento das folhas de papel toalha “germitest”. Os dados foram submetidos a análise de variância pelo F e as médias comparadas pelos testes de Tukey e Kruscal-Wallis, ambos a 5% de probabilidade. A primeira contagem de germinação, índice de velocidade de germinação, comprimento de raiz, comprimento da parte aérea e massa seca da raiz do feijão-caupi foram analisados de forma paramétrica, sendo constatado que apenas houve significância na variável primeira contagem e uma redução na germinação em relação ao tratamento controle em torno de 10%. Nas condições em que essa pesquisa foi realizada, os extratos alcoólicos de C. rotundus L. não afetam a germinação de sementes e crescimento inicial das plântulas de feijão-caupi.Palavras-chave: tiririca, alelopatia, interferência, plantas daninhas. ABSTRACT:This study aimed to investigate the allelopathic effects of Cyperus rotundus L. extracts on seed germination and early development of seedlings of Vigna unguiculata L. Walp. Alcoholic extracts at concentrations of 0, 1.5%, 3%, 4.5%, 6.0%, 7.5%, and 9.0% were obtained by crushing C. rotundus L. leaves used to moisten the “germitest” paper sheets. The data were subjected to analysis of variance and also both Tukey and Kruscal-Wallis tests were carried out at 5% for the data means. The first germination count, germination speed index, root length, shoot length, and dry root weight of cowpea were parametrically analyzed. The only variable with significance was first germination count. The germination reducted in relation to the control treatment around 10%. Thus, in the conditions used in this research, alcoholic extracts of C. rotundus L. did not affect either seed germination or early growth of cowpea seedlings.Keywords: nut grass, allelopathy, interference, weeds. DOI:

Sign in / Sign up

Export Citation Format

Share Document