Consulta: subjectFacets:"Plant extract"
Registros recuperados: 22
Data/hora: 10/06/2024 07:44:51

Mutagenicity induced by the hydroalcoholic extract of the medicinal plant Plathymenia reticulata Benth
Provedor de dados: 80
Autores: Della Torre,A; Albuquerque,LBL; Farrapo,NM; Oshima-Franco,Y; Santos,MG; Tavares,RVS; Rodas,ACD; Dal Belo,CA; Cardoso,CRP; Varanda,EA; Groppo,FC; Lopes,PS.
Plathymenia reticulata Benth has an anti-inflammatory effect and is capable of neutralizing the neuromuscular blockade induced by Bothrops jararacussu or Crotalus durissus terrificus venoms, probably by precipitating venom proteins (an effect caused by plant tannins). The present study aimed to evaluate the mutagenic activity of P. reticulata by using the Salmonella mutagenicity assay (Ames test) and the micronucleus test in CHO-K1 cells. P. reticulata extract concentrations of 2.84, 5.68, 11.37, and 19.90 mg/plate were assayed by the Ames test using TA97a, TA98, TA100 and TA102 bacterial strains, with (+S9) and without (-S9) metabolic activation. Concentrations of 5, 1.6 and 0.5 μg/mL of P. reticulata extract were used for the micronucleus test. P....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ames test; Micronucleus test; Mutagenicity; Plant extract; Plathymenia reticulata.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000200010

Efficacy of tannins from Mimosa pudica and tannic acid in neutralizing cobra (Naja kaouthia) venom
Provedor de dados: 80
Autores: Sia,FY; Vejayan,J; Jamuna,A; Ambu,S.
In the present study, the effectiveness of Mimosa pudica tannins (MPT) in neutralizing the lethality of Naja kaouthia venom was compared with commercially derived tannins. Preincubation of MPT with N. kaouthia venom maintained 100% survival of mice after 24 hours. The mouse group in which there was no preincubation, no protection against the effects of the venom was observed. M. pudica tannin was found to be more effective in neutralizing the lethality of N. kaouthia venom when compared to commercial tannic acid. Two protein spots were missing in the two-dimensional gel electrophoresis (2-DE) of the MPT treated mouse indicating the down-regulation of venom proteins. The results from this study indicated that tannins obtained from M. pudica are better than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant extract; Snake venom; Therapy; Tannin; Phospholipase A2.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000100006

Antiophidian properties of plant extracts against Lachesis muta venom
Provedor de dados: 80
Autores: De Paula,RC; Sanchez,EF; Costa,TR; Martins,CHG; Pereira,PS; Lourenço,MV; Soares,AM; Fuly,AL.
Snakebites comprise a serious health problem in several countries due to their global incidence, which exceeds 2.5 million per year, and the elevated number of victim fatalities. To counteract envenomations, antivenoms have been used regularly for more than a century. Apart from side effects including anaphylactic reactions, antivenoms are not able to efficiently neutralize local tissue damage, which contributes to increasing the severity and morbidity observed in patients. This fact, in turn, may be responsible for economic hardship, particularly in rural populations of developing countries. In the present work, we evaluated the antiophidian properties of 12 Brazilian plant extracts against the hemolytic, coagulant, hemorrhagic and proteolytic effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snake venom; Lachesis muta; Plant extract; Antivenom; Biological activities.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000200012

Acaricidal activity of juazeiro leaf extract against red spider mite in cotton plants
Provedor de dados: 86
Autores: Ferraz,José Cláudio Barros; Matos,Cláudia Helena Cysneiros; Oliveira,Carlos Romero Ferreira de; Sá,Maria das Graças Rosa de; Conceição,Antônia Gilciléia Cunha da.
Abstract: The objective of this work was to evaluate the toxicity, repellency, efficiency, and phytotoxicity of the aqueous extract of juazeiro (Ziziphus joazeiro) leaves in the control of the red spider mite, Tetranychus ludeni, on cotton plant. For toxicity evaluation, T. ludeni adult females were put on cotton leaf discs sprayed with the juazeiro extract. The repellent effect was verified in arenas that contained cotton leaf discs treated or not with the aqueous extract. The control efficiency of the juazeiro extract was evaluated by the infestation of cotton plants by adult female mites, followed by spraying with the extract. Measured LC50 was 3.54% (m/v), with 76.47% mortality and repellent effect. There was control efficiency for 120 hours, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; Tetranychus ludeni; Ziziphus joazeiro; Mortality; Plant extract; Toxicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000700493

Phytotoxic effect of plant extracts on physiology of cotton (Gossypium hirsutum L.) plants
Provedor de dados: 87
Autores: N. Zahoor,Muhammad; Nadeem,Muhammad; Iqbal,Jamshaid; F. Shahzad,Muhammad; Islam,Tahir; A. Begum,Hussan; S. Baloch,Mohammad; Ullah,Ayat.
Abstract  Background:  Plant-derived compounds are alternatives of synthetic insecticides in sustainable agriculture.  Objective:  This study investigated the phytotoxic effect of higher concentrations (2, 4, 8 and 16%) of four plants extracts (Azadirachta indica, Mentha arvensis, D. stramonium and Citrus limonium) on cotton plants.  Methods:  Each concentration was replicated four times to check the phytotoxic effect (CO2-in, CO2-out, H2O-in, H2O-out and photosynthesis absorption rate (PAR) in randomized complete block design. Data was recorded after 12, 24, 48 and 72 hours of spray with the help of Photosynthetic CL 340 meter.  Results:  The results showed that CO2-in was more affected by the D. stramonium (131.65±0.38) at 8% concentration. The overall...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic insecticides; Plant extract; Cotton; PAR.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100314

Effects of Phytogenic Additives and Organic Acids, alone or in combination, on the Performance, Intestinal Quality and Immune Responses of Broiler Chickens
Provedor de dados: 89
Autores: Fascina,VB; Pasquali,GAM; Carvalho,FB; Muro,EM; Vercese,F; Aoyagi,MM; Pezzato,AC; Gonzales,E; Sartori,JR.
ABSTRACT The present study was conducted to evaluate the effects of phytogenic additives (PA) and organic acids (OA), alone or in combination, on the performance, intestinal histomorphometry and lipid oxidation, and immune responses of broiler chickens. In this experiment, 820 one-day-old chicks were distributed according to a completely randomized design in a 2 × 2 + 1 factorial arrangement, with four replicates of 41 broilers each. The dietary treatments consisted of a control diet with no PA or OA (CD); CD with OA and no PA (CD+OA-PA); CD with PA and no OA (CD+PA-CD); CDwith both PA and OA (CD+PA+CD); and CD + avilamycin + monesin sodium. Broiler performance was not affected by the alternative feed additives, except from 1 to 21 days, when broilers fed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidifier; Essential oil; Immunity; Intestinal histology; Plant extract.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300497

Bioactivity of Indonesian mahogany, Toona sureni (Blume) (Meliaceae), against the red flour beetle, Tribolium castaneum (Coleoptera, Tenebrionidae)
Provedor de dados: 92
Autores: Parvin,Sahana; Zeng,Xin-Nian; Islam,Touhidul.
Bioactivity of Indonesian mahogany, Toona sureni (Blume) (Meliaceae), against the red flour beetle, Tribolium castaneum (Coleoptera, Tenebrionidae). The insecticidal activity of Toona sureni (Blume) Merr. was evaluated considering repellency, mortality and progeny production of F1 adults of Tribolium castaneum (Herbst, 1797) (Coleoptera, Tenebrionidae). Dried extract of seeds of T. sureni was dissolved in acetone to prepare solution of various concentrations (0.5, 1.0, 2.5 and 5.0%). To test for repellency, the insects were exposed to treated filter paper. Mortality of larvae, pupae and adults was evaluated by the treatment of spraying the insects with different concentrations of T. sureni extract. Residual effect of the extract was also evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insect mortality; Plant extract; Repellency; Residual effect; Stored wheat.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000300013

Effect of plant extracts on growth performance and insulin-like growth factor 1 secretion in growing pigs
Provedor de dados: 96
Autores: Devi,Subramaniam Mohana; Park,Jae Won; Kim,In Ho.
ABSTRACTThe objective of the present study is to evaluate the effects of plant extracts on growth performance, nutrient digestibility, and immune blood characteristics in growing pigs. A total of 80 [(Landrace × Yorkshire) × Duroc] pigs with an initial body weight (BW) of 27.31±2.15 kg were used in a 6-wk experiment. Pigs were allotted to one of four treatments (1 - Control (CON) (basal diet); 2 - PE1 (CON + 0.05% plant extracts); 3 - PE2 (CON + 0.10% plant extracts); and 4 - PE3 (CON + 0.15% plant extracts)) in a randomized complete block design according to sex and initial BW. The PE1 and PE2 treatments provided a greater average daily gain than the CON treatment. From weeks 0 to 6 the pigs fed diets PE2 and PE3 showed greater apparent total tract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IGF-1; Plant extract.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001000355

Evaluation of olive leaf extract as a growth promoter on the performance, blood biochemical parameters, and caecal microflora of broiler chickens
Provedor de dados: 96
Autores: Erener,Guray; Ocak,Nuh; Ozturk,Ergin; Cankaya,Soner; Ozkanca,Resit; Altop,Aydın.
ABSTRACT The objective of the study was to examine the effects of an alcoholic liquid olive leaf extract (OLE) obtained from fresh leaves on the growth performance, carcass weight, caecal microflora, and some plasma variables, such as triglycerides, total cholesterol, high-density lipoprotein (HDL), and low-density lipoprotein (LDL) cholesterol in broiler chickens. A total of 375 one-day-old male broilers (Ross 308) were randomly divided into five treatments with five replicate pens (15 birds each) per treatment. The birds were fed either a basal diet with no supplement (control), with 75 (OLE75), 150 (OLE150), 300 (OLE300), and 600 (OLE600) mg kg−1 oleuropein, provided by 0.66, 1.33, 2.65, and 5.32 g kg−1 of the OLE. The dietary supplementation of OLE...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial; Feed additive; Oleuropein; Olive leaves; Plant extract; Poultry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100600

Effects of arginine and phytogenic additive supplementation on performance and health of brown-egg layers
Provedor de dados: 96
Autores: Fascina,Vitor Barbosa; Pasquali,Guilherme Aguiar Mateus; Berto,Daniella Aparecida; Silva,Amanda da Lapa; Garcia,Edivaldo Antônio; Pezzato,Antonio Celso; Gonzales,Elisabeth; Sartori,José Roberto.
ABSTRACT This study was performed to evaluate the effects of the association of different digestible arginine and phytogenic additive dietary levels on performance and health status of brown-egg layers. In this study, a total of 504 33-week-old Hisex Brown layers were distributed into a completely randomized experimental design to a 4 × 3 factorial arrangement (dietary digestible arginine levels: 880, 968, 1056, or 1144 mg/kg of feed × phytogenic additive levels: 0, 100, and 200 mg/kg of feed) with six replicate cages of seven birds per cage. The phytogenic additive was composed of extracts of Baccharis dracunculifolia (40%), Astragalus membranaceus lipopolysaccharides (20%), cinnamon, and grape seed (20%). Feed intake was reduced when diets containing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoacids; Arg; Laying hens; Plant extract.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600502

ประสิทธิภาพของเชื้อแบคทีเรียปฏิปักษ์และสารจากพืชบางชนิดในการควบคุมโรคเมล็ดด่างของข้าว
Provedor de dados: 106
Autores: Rasamee Dhitikiattipong; Wanporn Khemmuk; Witchuda Rattanakarn; Nipon Boonmee.
Rice disease surveys had been carried out in the field of highland terrace paddy cultivation at ban na-gean, tambon na-gean, amphoe om-goy, Chiang Mai province which is in the area of highland agricultural development station project. Disease surveys have shown rice seed discoloration was the most severity and important problem in this area. The objective of this study was to test the effectiveness of antagonistic bacteria and some plant extract from tea seed to control rice seed discoloration in highland area. The experiment was designed as RCB with 6 treatments and 4 replications, using Beu Pa Doo rice variety and transplanting method in wet season 2008 and 2009. The treatments were foliar spray with bacterial suspension of antagonistic bacteria Bacillus...
Tipo: Collection
Palavras-chave: Rice; Antagonistic bacteria; Seed discoloration; Plant extract; Biological control; Saponics; Terrace paddy cultivation; Rice seed discoloration disease; ข้าว; ผงเชื้อแบคทีเรียปฏิปักษ์; โรคเมล็ดด่าง; สารจากพืช; ผงกากเมล็ดชา; การทำนาขั้นบันได; ความรุนแรงของโรค; การควบคุมโดยชีววิธี; แสพโพนิน.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/123456789/3101

Plant Extracts Display Synergism with Different Classes of Antibiotics
Provedor de dados: 42
Autores: SILVA,DANIELLE M.; COSTA,PRISCILLA A. DA; RIBON,ANDRÉA O.B.; PURGATO,GISLAINE A.; GASPAR,DIAZ-MUÑOZ; DIAZ,MARISA A.N.
Abstract: One manner in which plant-derived compounds exert their antibiotic potential is the synergism, a positive interaction between two compounds. Studies indicate that the use of plant extracts combined with antimicrobials may promote a significant reduction of the minimum inhibitory concentrations of antibiotics for bacterial strains. This study aimed to evaluate the activity of plant extracts and antibiotics as well as their combination on Staphylococcus aureus. The activity of 15 plant extracts was evaluated using diffusion assay. The minimum inhibitory concentrations (MICs) and the interactions between the extracts and antibiotics as well as compound emodin were evaluated with the checkerboard method. The active extracts were a hexane extract of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Bovine mastitis; Plant extract; Staphylococcus aureus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300802

Treatment of Bothrops alternatus envenomation by Curcuma longa and Calendula officinalis extracts and ar-turmerone
Provedor de dados: 45
Autores: Melo,M.M.; Habermehl,G.G.; Oliveira,N.J.F.; Nascimento,E.F.; Santos,M.M.B.; Lúcia,M.
It was investigated the efficiency of two extracts of plants and one fraction of their properties against the local effects of bothropic envenomation. Bothrops alternatus venom (1.25µg) diluted in 100µl of sterile saline solution was inoculated (intradermally) into the shaved dorsal back skin of 30 New Zealand rabbits. The animals were divided in six groups receiving the following treatments: group I: subcutaneous application of Curcuma longa extract (1.0ml); group II: topic treatment of Curcuma longa hydroalcoholic extract (1.0ml); group III: topic application of ar-turmerone in vaseline (1.0g); group IV: topic application of Curcuma longa methanolic extract (1.0ml); group V: topic application of Calendula officinalis ointment (1.0g); group VI: topic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant extract; Ar-turmerone; Bothrops alternatus; Rabbit.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000100002

Acaricidal activity of leaves of Morus nigra against the cattle tick Rhipicephalus microplus
Provedor de dados: 45
Autores: Dantas,A.C.S.; Freire,D.P.; Souza,G.R.; Almeida,J.R.G.S.; Rolim,L.A.; Castro,R.N.; Horta,M.C.
ABSTRACT The acaricidal activity of crude ethanolic extract and fractions from the leaves of Morus nigra (Moraceae) was carried out on female cattle ticks Rhipicephalus microplus, using the adult immersion test. The mortality and fertility of females exposed to different concentrations of hexane, chloroform and ethyl acetate fractions, as well as ethanolic extract of M. nigra with concentrations of 5, 10 and 25mg/ml were evaluated using three treatment groups, two control groups and triplicate tests. The study also identified the main phenolic compounds of the extract and fractions of this species by HPLC. The chloroform fraction of leaves of M. nigra (25mg/mL) showed the best results for this species, obtaining 62.6% of inhibition of oviposition, 39.3% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tick control; Acaricide; Plant extract; Mulberry; HPLC.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300523

Relaxant effects of a hydroalcoholic extract of Ruta graveolens on isolated rat tracheal rings
Provedor de dados: 48
Autores: Águila,Luis; Ruedlinger,Jenny; Mansilla,Karina; Ordenes,José; Salvatici,Raúl; Campos,Rui Ribeiro de; Romero,Fernando.
BACKGROUND: Ruta graveolens L. (R. graveolens) is a medicinal plant employed in non-traditional medicines that has various therapeutic properties, including anthelmintic, and vasodilatory actions, among others. We evaluated the trachea-relaxant effects of hydroalcoholic extract of R. graveolens against potassium chloride (KCl)- and carbachol-induced contraction of rat tracheal rings in an isolated organ bath. RESULTS: The results showed that the airway smooth muscle contraction induced by the depolarizing agent (KCl) and cholinergic agonist (carbachol) was markedly reduced by R. graveolens in a concentration-dependent manner, with maximum values of 109 ± 7.9 % and 118 ± 2.6 %, respectively (changes in tension expressed as positive percentages of change in...
Tipo: Journal article
Palavras-chave: Ruta graveolens; Trachea-relaxant; Plant extract.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100028

Antibacterial activity of Brazilian Amazon plant extracts
Provedor de dados: 55
Autores: Suffredini,Ivana Barbosa; Paciencia,Mateus Luís Barradas; Varella,Antonio Drauzio; Younes,Riad Naim.
Infections caused by multiresistant bacteria are a widespread problem, especially in intensive care units. New antibiotics are necessary, and we need to search for alternatives, including natural products. Brazil is one of the hottest spots in the world in terms of biodiversity, but little is known about the chemical and pharmacological properties of most of the plants found in the Amazon rain forest and the Atlantic Forest. We screened 1,220 organic and aqueous extracts, obtained from Amazon and Atlantic rain forest plants, against Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa and E. coli. Seventeen organic and aqueous extracts obtained from 16 plants showed activity against both Gram-positive bacteria. None of the extracts showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant extract; Antibacterial activity; Amazon rain forest; Atlantic forest.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000600008

Screening of antibacterial extracts from plants native to the Brazilian Amazon Rain Forest and Atlantic Forest
Provedor de dados: 56
Autores: Suffredini,I.B.; Sader,H.S.; Gonçalves,A.G.; Reis,A.O.; Gales,A.C.; Varella,A.D.; Younes,R.N.
More than 20% of the world's biodiversity is located in Brazilian forests and only a few plant extracts have been evaluated for potential antibacterial activity. In the present study, 705 organic and aqueous extracts of plants obtained from different Amazon Rain Forest and Atlantic Forest plants were screened for antibacterial activity at 100 µg/ml, using a microdilution broth assay against Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa and Escherichia coli. One extract, VO581, was active against S. aureus (minimum inhibitory concentration (MIC) = 140 µg/ml and minimal bactericidal concentration (MBC) = 160 µg/ml, organic extract obtained from stems) and two extracts were active against E. faecalis, SM053 (MIC = 80 µg/ml and MBC = 90...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant extract; Antibacterial activity; Screening; Amazon Rain Forest; Atlantic Forest.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000300015

Memory retrieval improvement by Heteropterys aphrodisiaca in aging rats
Provedor de dados: 60
Autores: Galvão,Suzana Maria Pereira; Mendes,Fúlvio Rieli; Oliveira,Maria Gabriela Menezes de; Mattei,Rita; Mello,João Carlos Palazzo de; Roman Júnior,Walter Antonio; Carlini,Elisaldo de Araújo.
Few data exists about the pharmacological properties of Heteropterys aphrodisiaca O. Mach. (Malpighiaceae), which is native to the scrubland regions of Brazil. The present study investigated the effects of oral treatment with H. aphrodisiaca extract (BST0298) on the learning and memory of young (3-6 months) and aged (21-23 months) rats, and compared the in vitro antioxidant activity of three lots collected in different years. An improvement in the number of sessions to learn the task was observed in the left/right discrimination test in aged rats treated for 45 days with 25 mg/kg (7.0 ± 0.5; p=0.005) or 50 mg/kg (7.6 ± 0.6; p=0.012) compared with control old rats (11.0 ± 1.6). On the other hand, pre-treatment did not improve the performance of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heteropterys aphrodisiaca O. Mach/pharmacognosy; Heteropterys aphrodisiaca O. Mach/antioxidant activity; Malpighiaceae/pharmacognosy; Antioxidants; Flavonoids; Plant extract.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000400020

Design of antiseptic formulations containing extract of Plinia cauliflora
Provedor de dados: 60
Autores: Oliveira,Lara Alexandre de; Souza-Moreira,Tatiana Maria de; Cefali,Letícia Caramori; Chiari,Bruna Galdorfini; Corrêa,Marcos Antonio; Isaac,Vera Lucia Borges; Salgado,Hérida Regina Nunes; Pietro,Rosemeire Cristina Linhari Rodrigues.
The leaves of the Brazilian species Plinia cauliflora were used to obtain active hydroalcoholic extract and fractions enabling the development of efficient antiseptic pharmaceutical formulations. A chemical composition of 70% ethanol extract, aqueous and ethyl acetate fractions was analyzed by thin-layer chromatography and for phenol content. Antimicrobial activity was tested against Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Lactobacillus acidophilus and Candida albicans by the agar diffusion method and the minimum inhibitory concentration was assayed by broth microdilution. Extract microbiological quality was tested to avoid contamination in the formulations. A mouthwash and a topical cream containing the extract were developed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antiseptic formulations/design; Plinia cauliflora/antimicrobial activity; Plinia cauliflora/antiseptic activity; Mouthwash; Plant extract; Topical cream.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000300010

Alkaloid-rich fraction of Himatanthus lancifolius contains anti-tumor agents against leukemic cells
Provedor de dados: 60
Autores: Lima,Melissa Pires de; Hilst,Luciana Farhat; Mattana,Fernanda Vanessa Rechinbach; Santos,Cid Aimbiré de Moraes; Weffort-Santos,Almeriane Maria.
The effects of the alkaloid-rich fraction of Himatanthus lancifolius (Müll. Arg) Woodson on normal marrow cells and leukemic cell lines were investigated. After 48 h exposure, the proliferation assay showed significant cell growth inhibition for Daudi (0.1-10 µg/mL), K-562 (1-10 µg/mL), and REH cells (10-100 µg/mL), yet was inert for normal marrow cells. A similar inhibition profile was observed in clonogenic assays. This alkaloid-rich fraction, in which uleine is the main compound, showed no signs of toxicity to any cells up to 10 µg/mL. Cell feature analyses after induction of differentiation showed maintenance of the initial phenotype. Flow cytometric expression of Annexin-V and 7-AAD in K-562 and Daudi cells has indicated that the cells were not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apocynaceae; Cell proliferation; Himatanthus lancifolius; Indole alkaloids; Leukemia; Plant extract.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502010000200014

Plant extract and essential oils added as antimicrobials to cheeses: a review
Provedor de dados: 65
Autores: Gouvea,Fabiola dos Santos; Rosenthal,Amauri; Ferreira,Elisa Helena da Rocha.
ABSTRACT: Cheese is a food that is highly susceptible to contamination by pathogenic and spoilage microorganisms, which can result in a decrease in its shelf life and cause serious risks to the consumers’ health. Consumers always require healthy food, free of synthetic preservatives, inducing a search for natural alternatives to ensure safety of the products. Essential oils and plant extracts emerge as an alternative for aiding cheese preservation. Some substances have demonstrated good effects against most pathogens and cheese spoilage microorganisms. However, intrinsic and extrinsic factors may influence the actions of these compounds when incorporated into cheese, besides affecting the product characteristics. This review aims at discussing the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cheese; Natural antimicrobial; Essential oil; Plant extract.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800451

Effect of plant and fungous metabolites on Meloidogyne exigua
Provedor de dados: 64
Autores: Amaral,Daniel Rufino; Oliveira,Denilson Ferreira; Campos,Vicente Paulo; Pantaleão,José Antônio; Carvalho,Douglas Antônio de; Nunes,Alexandro da Silva.
As nematodes cause great damage to Brazilian coffee production, effective methods to control these parasites are necessary. In a previous work Allium cepa L., Cajanus cajan (L.) Mill., Crotalaria juncea L., Ficus elastica Roxb., Ruta graveolens L., Stylosanthes guianensis Aubl., Leucaena leucocephala (Lam.) Dewit., Brachiaria decumbens Stapf., Catharanthus roseus G. Don, Tagetes minuta L., Ricinus communis L. and Coffea arabica L. produced active substances against Meloidogyne exigua Goeldi, a nematode widely disseminated through Brazilian coffee fields. Thus, aqueous extracts of such plants, collected in a different season from that of the previous work, as well as crude metabolites produced in liquid medium by Fusarium moniliforme Shelden and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Heteroderidae; Nematicide; Plant extract; Tylenchida.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000700027