Christ Stone Arnaud Bopenga Bopenga¹, Henri Meyo Degboevi¹, Kevin Candelier², Prosper Edou Engonga³, Stéphane Dumarçay¹, Marie France Thévenon², Christine Gérardin Charbonnier¹, Philippe Gérardin^1,*

Journal of Renewable Materials, Vol.9, No.1, pp. 17-33, 2021, DOI:10.32604/jrm.2021.013366

Abstract

Chemical composition of the bark extracts of Coula edulis was investigated to find potential antioxidant, anti-termite and antifungal compounds which can find useful applications in the fields of food, nutraceuticals, cosmetics or agrochemical. Phytochemical screening revealed the presence of several groups of active molecules such as alkaloids, polyphenols, flavonoids, saponins and sterols and/or terpenes in the different extracts. Total phenols, condensed tannins and flavonoids contents corroborated phytochemical screening. Gas chromatography-mass spectrometry (GC-MS) analysis revealed compounds in dichloromethane extract different from those obtained with all the other solvents. Hexadecanoic and trans-9-octadecenoic acids, as well as stigmasterol and β-sitosterol have been identified… More >

Febrina Dellarose Boer^1,2,3, Jérémy Valette^1,2, Jean-Michel Commandré^1,2, Mériem Fournier^3,4, Marie-France Thévenon^1,2,*

Journal of Renewable Materials, Vol.9, No.1, pp. 97-117, 2021, DOI:10.32604/jrm.2021.013147

Abstract Sugarcane bagasse was pyrolyzed using a laboratory fixed bed reactor to produce char and its by-product (pyrolysis liquid). The pyrolysis experiments were carried out using different temperatures (400°C and 500°C), heating rate (1 °C/min and 10 °C/min), and holding time (30 min and 60 min). Char was characterized according to its thermal properties, while the pyrolysis liquid was tested for its anti-fungal and anti-termite activities. Pyrolysis temperature and heating rate had a significant influence on the char properties and the yield of char and pyrolysis liquid, where a high-quality char and high yield of pyrolysis liquid can be obtained at… More >

SALLY NASER^1,2, WESAMELDIN SABER³, MOHAMMAD EL-METWALLY^4,*, MAHMOUD MOUSTAFA^5,6, ATTALLA EL-KOTT^5,7

BIOCELL, Vol.44, No.2, pp. 147-155, 2020, DOI:10.32604/biocell.2020.09522

Abstract Because of its antitumor therapeutic-activity, as well as its application in food industries to improve the quality, L-asparaginase has attracted considerable attention from several investigators. In recent years, fungi have occupied advanced rank among microorganisms in the production process of the enzyme. This review is spotting the light on the advantages of fungal enzyme and its applications in the food industry and medications. The solid-state fermentation was discussed as the wide alternative and most accepted biosynthesis technique. However, some lights were also spotted to the statistical experimental design of the fermentation process, mainly on the methodology of the response surface… More >

Ali Abdelmoteleb¹, Benjamin Valdez-Salas², Ernesto Beltran-Partida², Daniel Gonzalez-Mendoza^3,*

Journal of Renewable Materials, Vol.8, No.1, pp. 69-78, 2020, DOI:10.32604/jrm.2020.08334

Abstract The aim of this study was to evaluate the antibacterial and antifungal activities of eco-friendly synthesized silver nanoparticles. The silver nanoparticles were synthesized by biological method using aqueous extract of Abronia villosa. Synthesis of silver nanoparticles was confirmed by color change and characterized using UV-visible spectroscopy, scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), and zeta potential analysis. The SEM analysis revealed the presence of spherical silver nanoparticles of the size range 21 to 33 nm. Synthesized silver nanoparticles were used to evaluate their antibacterial effects at different concentrations (25, 50, 75 and 100 µg/ml)… More >

Moreno Pérez P^1,3, M Gamboa Angulo¹, G Heredia², B Canto Canché¹, CM Rodríguez García¹, IL Medina Baizabal¹, L Peraza Echeverría¹

Phyton-International Journal of Experimental Botany, Vol.85, pp. 7-14, 2016, DOI:10.32604/phyton.2016.85.007

Abstract Nowadays, it is highly necessary to find more and safer agrochemicals. In this sense, micromycetes are an important source of natural products which could be used to control plant diseases. Therefore with the aims to contribute in this searching of natural products with antimicrobial applications, a total of 49 fungal strains were isolated from the Yucatan Peninsula. These fungi were cultured in fermented rice, their respective organic extracts macerated in ethyl acetate (EAE) and methanol (ME) were obtained and tested against five fungal pathogens of agricultural importance. These included Alternaria chrysanthemi, Colletotrichum gloeosporioides, Mycosphaerella fijiensis, and the bacteria Erwinia carotovora… More >

González-Álvarez M, S Moreno-Limón^*, SM Salcedo-Martínez, EC Pérez-Rodríguez

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 427-434, 2015, DOI:10.32604/phyton.2015.84.427

Abstract The agricultural sector, and particularly the horticultural production, has a singular importance in agriculture, considering that it ranks second on agricultural products, nationally and worldwide. Fungal diseases are one of the major causes of vegetable loss during storage, reducing their nutritional value, quality and sale price. Vegetables are usually exposed to diverse treatments with chemical products before storage; as a result, fungal populations develop an increased resistance over time becoming more difficult to control. Because of this, research efforts toward finding more suitable chemicals to control fungal diseases are needed. Natural extracts may be an alternative solve this problem. In… More >

Robles-Hernández L, J Hernández-Huerta, AC González-Franco, OA Hernández-Rodríguez, A Núñez-Barrios, R Pérez-Leal

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 253-261, 2015, DOI:10.32604/phyton.2015.84.253

Abstract Chili pepper is one of the main crops of economic importance in Mexico, and Fusarium wilting is a disease that limits its production. In addition, the inappropriate use of agrochemicals in farming activities generate environmental and health problems. Therefore, in this study the effectiveness of Streptomyces sp PRIO41 was evaluated as a (1) biocontrol agent of Fusarium spp and (2) plant growth promoter bacteria. Assays of pathogenicity and virulence of Fusarium spp. in jalapeño pepper seeds, and interactions of these pathogens with Streptomyces PRIO41 were evaluated under two nutritional conditions. In the greenhouse, the effectiveness of Streptomyces sp. PRIO41 was… More >

Ochoa Fuentes YM¹, E Cerna Chávez¹, J Landeros Flores¹, S Hernández Camacho², JC Delgado Ortiz¹

Phyton-International Journal of Experimental Botany, Vol.81, pp. 69-73, 2012, DOI:10.32604/phyton.2012.81.069

Abstract We evaluated the in vitro antifungal activity of extracts of peruvian peppertree (Shinu smolle), cherimoya (Annona cherimola), cinnamon (Cinnamomum zeylanicum) and tobacco (Nicotiana glauca) on the mycelial growth and sporulation of Fusarium oxysporum, Fusarium culmorum and Fusarium solani. The research was conducted at the Universidad Autónoma de Aguascalientes (UAA) and the Universidad Autónoma Agraria Antonio Narro (UAAAN). The species of Fusarium were previously identified in the UAA Laboratory of Parasitology. The extracts were obtained in the laboratory of Toxicology of the UAAAN. The methodology of poisoned culture medium was used to determine the (1) inhibition of mycelial growth, (2) average… More >

Hernández-Castillo¹ FD, RH Lira-Saldivar², L Cruz-Chávez¹, G Gallegos-Morales¹, ME Galindo-Cepeda¹, E Padrón-Corral¹, M Hernández-Suárez²

Phyton-International Journal of Experimental Botany, Vol.77, pp. 241-252, 2008, DOI:10.32604/phyton.2008.77.241

Abstract Potato crop requires more fungicides than any other crop in Mexico to prevent and control several diseases. More than 21,3% of the total available fungicides are required for cropping potato. High quantities of synthetic pesticides are intended to control Phytophthora infestans and Rhizoctonia solani fungi. As a result, this produces severe health problems and ecosystem disturbances. There is then an urgent need for finding new options for sustainable management of potato crop diseases. Several experiments were conducted under laboratory, greenhouse, and field conditions, to: (1) analyze the antifungal effect of bacteria strains of the genus Bacillus, and their effect on… More >

Hapon MV^1,2, JJ Boiteux^1,2, MA Fernández¹, G Lucero^1,2, MF Silva¹, PH Pizzuolo^1,2

Phyton-International Journal of Experimental Botany, Vol.86, pp. 270-277, 2017, DOI:10.32604/phyton.2017.86.270

Abstract The polyphagous plant pathogen Botrytis cinerea has the ability of growing fast under several conditions, and producing grey moulds in different plant tissues. Because of its adaptive plasticity, resistant strains have made difficult their chemical control. Therefore, new strategies of management and the use of natural compounds could be important control alternatives. The aim of this work was to study the potential value of four Argentine native plant extracts and some of its phenolic compounds as biodrugs on B. cinerea. Aqueous plant extracts of Larrea divaricata, Prosopis strombulifera, Tessaria absinthioides and Schinus molle var. areira, were used. The capability to… More >