Consulta: subjectFacets:"Extracts"
Registros recuperados: 12
Data/hora: 01/06/2024 13:35:29

Extractos fibrolíticos fúngicos como modificadores de la fermentación ruminal in vitro.
Provedor de dados: 32
Autores: Sánchez Santillán, Paulino.
Se midió la velocidad de crecimiento radial (Vcr) y biomasa en 2 medios de cultivo del extracto de bagazo de caña (EB) adicionado o no con peptona de caseína y se evaluó la actividad enzimática fibrolítica (lacasas, xilanasas y celulasas) a 0, 7 y 15 d en fermentación sólida (FS) de Pleurotus ostreatus-IE8 y Fomes fomentarius-EUM1 para producir extractos fúngicos. El cambio químico del bagazo de caña de azúcar y la cinética de producción de gas in vitro se estudiaron al adicionar Fibrozyme® y productos de la FS (cultivos sólido y extracto crudo enzimático (ECE)) a través de 6 tratamientos que consideraron variaciones en el origen y complejo de las enzimas fibrolíticas. La adición de peptona al medio no afectó la Vcr de F. fomentarius-EUM1, mientras que en...
Palavras-chave: Fermentación ruminal; Enzimas fibrolíticas; Extractos; Alimentos concentrados; Composición nutrimental; Ruminal fermentation; Fibrolitic enzymes; Extracts; Nutrient composition; Concentrated foods; Maestría; Ganadería.
Ano: 2010
URL: http://hdl.handle.net/10521/294

Antifungal activity of Crotalaria longirostrata Hook. &amp;amp; Arn. extracts against phytopathogen fungi from maize
Provedor de dados: 73
Autores: Cruz-Rodríguez,Rosa Isela; Meza-Gordillo,Rocío; Rodríguez-Mendiola,Martha Alicia; Arias-Castro,Carlos; Mancilla-Margalli,Norma Alejandra; Ávila-Miranda,Martín Eduardo; Culebro-Ricaldi,José Miguel; Gutiérrez-Miceli,Federico Antonio; Ruiz-Valdiviezo,Víctor Manuel; Ayora-Talavera,Teresa Del Rosario.
ABSTRACT In the present study, the hexane, acetone and methanol extracts of stem, branches and roots from Crotalaria longirostrata were evaluated for their antifungal activity against Fusarium sp., Fusarium verticillioides and Aspergillus flavus. The variables analyzed were inhibition halos, mycelial growth inhibition, sporulation and minimum inhibitory concentration. Phytochemical analysis revealed the presence of saponins, coumarins, anthrones, anthraquinones, flavonoids and alkaloids on different organic extracts. The hexane extract showed zones of inhibition between 6.3 and 10.5 mm. The mycelia growth and sporulation of A. flavus were reduced to 90% with methanol extract. The minimum inhibitory concentration values obtained with hexane extracts were...
Tipo: Journal article
Palavras-chave: Fungicidal properties; Extracts; Fusarium verticillioides; Fusarium sp.; Aspergillus flavus.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100167

Marine bacteria from the Gulf of California with antimicrofouling activity against colonizing bacteria and microalgae
Provedor de dados: 5
Autores: Sanchez-rodriguez, Diana Elizabeth; Ortiz-aguirre, Ismael; Aguila-ramirez, Ruth Noemi; Guadalupe Rico-virgen, Erika; Gonzalez-acosta, Barbara; Hellio, Claire.
One way of reducing the input of pollutants into the marine environment is to enforce the use of non-toxic antifouling paints in marine protected areas. Thus, the purpose of this study was to detect marine microorganisms that secrete inhibitory substances against bacteria and microalgae to avoid biofouling on manmade structures in La Paz bay, B.C.S., Mexico. The inhibitory potential of 125 bacteria was evaluated against biofilm-forming bacteria. Crude extracts were obtained with methanol and ethyl acetate from 16 bacterial strains that exhibited antagonistic and antibacterial activity in a preliminary screening. Antibacterial and antimicroalgal assays were performed using crude extracts, the minimum inhibitory concentration (MIC) was determined. The...
Tipo: Text
Palavras-chave: Epibionts; Extracts; Shewanella; Staphylococcus; Biofouling; Antifouling.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00616/72762/72271.pdf

Biomimetic Approaches for the Development of New Antifouling Solutions: Study of Incorporation of Macroalgae and Sponge Extracts for the Development of New Environmentally-Friendly Coatings
Provedor de dados: 5
Autores: Sánchez-lozano, Ilse; Hernández-guerrero, Claudia Judith; Muñoz-ochoa, Mauricio; Hellio, Claire.
Biofouling causes major economic losses in the maritime industry. In our site study, the Bay of La Paz (Gulf of California), biofouling on immersed structures is a major problem and is treated mostly with copper-based antifouling paints. Due to the known environmental effect of such treatments, the search for environmentally friendly alternatives in this zone of high biodiversity is a priority to ensure the conservation and protection of species. The aim of this work was to link chemical ecology to marine biotechnology: indeed, the natural defense of macroalgae and sponge was evaluated against biofoulers (biofilm and macrofoulers) from the same geographical zone, and some coatings formulation was done for field assays. Our approach combines in vitro and...
Tipo: Text
Palavras-chave: Adhesion; Algae; Antifouling; Biofilm; Extracts; Field assays; Sponges; Haliclona caerulea; Laurencia gardneri; Sargassum horridum; Ircinia sp.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00589/70074/68047.pdf

Herbicidal activity of kidney leaf mud plantain leaves extracts on the germination of four species
Provedor de dados: 87
Autores: T. Perboni,Laís; Agostinetto,Dirceu; Gazola,Juliano; Tessaro,Daniela; M. Teixeira,Marlon; Neutzling,Alessandro.
Abstract  Background:  Plants synthesize compounds of specialized metabolism to defend themselves against biotic and abiotic stresses. These compounds could be used as models for pesticide development. Among the species that have not yet been studied for the potential to produce active compounds is the kidney leaf mud plantain (Heteranthera reniformis).  Objective:  The goal was to evaluate the effect of hexanic, ethyl acetate and methanolic extracts of H. reniformis leaves on cress (Lepidium sativum) seed germination to determine which one have the highest biological activity; and to evaluate different concentrations of extract with the highest biological activity on lettuce (Lactuca sativa), barnyard grass (Echinochloasp.) and giant arrowhead (Sagittaria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heteranthera reniformis; Extracts; Weeds; Suppression.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100311

Effect of Aqueous Moringa Oleifera (Lam) Leaf Extracts on Growth Performance and Carcass Characteristics of Hubbard Broiler Chicken
Provedor de dados: 89
Autores: Alabi,OJ; Malik,AD; Ng’ambi,JW; Obaje,P; Ojo,BK.
ABSTRACT Two hundred and forty day old broiler chicks were used to investigate the effect of aqueous Moringa oleifera leaf extracts (AMOLE) on growth performance and carcass characteristics of broiler chicken. The birds were randomly allocated into six treatments with four replicates, and each replicate containing 10 broiler chicks; the CRD was used. The treatments contained AMOLE0+ (positive control with antibiotic treatment), AMOLE0- (negative control with ordinary water), AMOLE60 (60 ml/l), AMOLE90 (90 ml/l), AMOLE120 (120 ml/l) and AMOLE150 (150 ml/l) inclusion levels of AMOLE, respectively. Birds on positive control had the highest final body weight and growth rate (2392.00 g and 53.61 g respectively) and the ones on 150 ml/l of AMOLE had the least...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aqueous; Moringa oleifera; Extracts; Growth Performance; Carcass.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200273

In vitro evaluation of novel crude extracts produced by actinobacteria for modulation of ruminal fermentation
Provedor de dados: 96
Autores: Alves,Bruna Gomes; Martins,Cristian Marlon de Magalhães Rodrigues; Peti,Ana Paula Ferranti; Moraes,Luiz Alberto Beraldo de; Santos,Marcos Veiga dos.
ABSTRACT We evaluated the inclusion of two crude extracts produced by Streptomyces genus on in vitro dry matter and organic matter digestibility (IVDMD; IVOMD), cumulative gas production, volatile fatty acids (VFA), and methane (CH4) and ammoniacal nitrogen (NH3-N) concentration. The experimental design was randomized blocks with three blocks and four treatments: AMC (1.2 mg/25 mL ruminal inoculum), Caat (1.2 mg/25 mL ruminal inoculum), negative control (no inclusion of extracts), and positive control (sodium monensin, 1.7 mg/25 mL ruminal inoculum). Ruminal fluid samples were collected from three multiparous Holstein dairy cows fitted with ruminal cannula and incubated in a 24-h fermentation assay. There was no effect of crude extract inclusion in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinobacteria; Extracts; In vitro fermentation; Monensin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100721

Antibacterial effects of Thymus algeriensis extracts on some pathogenic bacteria
Provedor de dados: 3
Autores: Messaoudi, Mohammed; Benreguieg, Mokhtar; Merah, Maroua; Messaoudi, Zakarya Ayoub.
Despite the presence of many antibiotics, bacterial resistance is growing steadily and some of these antibiotics have become ineffective, which poses a major challenge to the health sector. In this context, this work has demonstrated, in vitro, the inhibitory action of the bacterial growth resulting from methanolic and ethanolic extracts of Thymus algeriensis Boiss. &amp;amp; Reut., a medicinal plant species harvested from the Algerian South-west area, as well as the determination of the phenolic content of those crude extracts. The methanolic extract of Thymus algeriensis showed a significant antibacterial effect with 16.5 and 19 mm against Pseudomonas aeruginosa and Staphylococcus aureus, respectively. Klebsiella pneumoniae was not inhibited by both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial effect; Extracts; Medicinal plant; Phenolic content; Thymus algeriensis.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/48548

Antimicrobial effectiveness of spices: an approach for use in food conservation systems
Provedor de dados: 52
Autores: Souza,Evandro Leite de; Stamford,Tânia Lúcia Montenegro; Lima,Edeltrudes de Oliveira; Trajano,Vinícius Nogueira; Barbosa Filho,José Maria.
There has been constant an increasing the search alternative and efficient compounds for food conservation, aiming a partial or total replacement of antimicrobial chemical additives. Spices offer a promising alternative for food safety. Inhibitory activity of spices and derivatives on the growth of bacteria, yeasts, fungi and microbial toxins synthesis has been well reported, so they could be used in food conservation as main or as adjuvant antimicrobial compounds in order to assure the production of microbiologically stable foods.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spices; Essential oil; Extracts; Chemical compounds; Antibacterial activity; Antifungal activity.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000500007

Extracts of red yolk from duck eggs inhibit metastasis of human mammary carcinoma (4T1) cells in mice
Provedor de dados: 52
Autores: Qi-bin,Song; Yi,Yao; Wei-guo,Hu; Sheng-hua,Zhang; Xiao-wei,Yan; Rui,Yang.
The aim of the present study was to investigate the in vivo anti-metastatic activity of the red pigments of red yolk eggs laid by the ducks dieting on Potamogeton cripus L on the mammary carcinoma (4T1). The pigments were extracted with petroleum ether and acetone (2:1, v/v). BALB/c mice were divided into three groups (n=6), fed with the extracts at 150 mg/kg body weight (BW)/day (DEYE-H) or at 50 mg/kg BW/day (DEYE-L) and identical buffer without the extract (control group). The extracts were administered for 34 days. The treatment significantly inhibited the growth of orthotopical 4T1 tumour (DEYE-H vs control, 1:2; DEYE-L vs control, 2:3) and reduced the metastasis of tumour in the lungs (DEYE-H vs control, 4:7; DEYE-L vs control, 5:7), without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duck egg yolk; Extracts; Mammary carcinoma; Metastasis; 4T1 Cells; BALB/c mice.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000300011

Anti-tumor properties of blackseed (Nigella sativa L.) extracts
Provedor de dados: 56
Autores: Ait Mbarek,L.; Ait Mouse,H.; Elabbadi,N.; Bensalah,M.; Gamouh,A.; Aboufatima,R.; Benharref,A.; Chait,A.; Kamal,M.; Dalal,A.; Zyad,A.
The objective of the present study was to evaluate the in vitro and in vivo anti-cancer effect of Nigella sativa L. seed extracts. The essential oil (IC50 = 0.6%, v/v) and ethyl acetate (IC50 = 0.75%) extracts were more cytotoxic against the P815 cell line than the butanol extract (IC50 = 2%). Similar results were obtained with the Vero cell line. Although all extracts had a comparable cytotoxic effect against the ICO1 cell line, with IC50 values ranging from 0.2 to 0.26% (v/v), tests on the BSR cell line revealed a high cytotoxic effect of the ethyl acetate extract (IC50 = 0.2%) compared to the essential oil (IC50 = 1.2%). These data show that the cytotoxicity of each extract depends on the tumor cell type. In vivo, using the DBA2/P815 (H2d) mouse model,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nigella sativa L.; Extracts; Cytotoxicity; Anti-tumor activity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000600014

Conventional and alternative antifungal therapies to oral candidiasis
Provedor de dados: 58
Autores: Anibal,Paula Cristina; Sardi,Janaina de Cássia Orlandi; Peixoto,Iza Teixeira Alves; Moraes,Julianna Joanna de Carvalho; Höfling,José Francisco.
Candida-associated denture stomatitis is the most common form of oral candidal infection, with Candida albicans being the principal etiological agent. Candida adheres directly or via an intermediary layer of plaque-forming bacteria to denture acrylic. Despite antifungal therapy to treat denture stomatitis, infection is reestablished soon after the treatment ceases. In addition, many predisposing factors have been identified as important in the development of oral candidiasis, including malnourishment, common endocrine disorders, such as diabetis mellitus, antibacterial drug therapy, corticosteroids, radiotherapy and other immunocompromised conditions, such as acquired immunodeficiency syndrome (AIDS). These often results in increased tolerance to the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candida spp.; Antifungals; Medicinal plants; Extracts; Essential oil.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400001