22 documents found, page 1 of 3
The isolation of pentose-assimilating yeasts and their xylose fermentation pote...
Martins,Gisele Marta; Bocchini-Martins,Daniela Alonso; Bezzerra-Bussoli,Carolina; Pagnocca,Fernando Carlos; Boscolo,Maurício; Monteiro,Diego AlvesABSTRACT For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. Since the Saccharomyces cerevisiae is unable to ferment the pentose, the search for pentose-fermenting micro...
A protein expression system for tandem affinity purification in Xanthomonas cit...
Dantas,Giordanni C.; Martins,Paula M.M.; Martins,Daniela A.B.; Gomes,Eleni; Ferreira,HenriqueAbstract Citrus canker, caused by the Gram-negative bacterium Xanthomonas citri subsp. citri (Xac), is one of the most devastating diseases to affect citrus crops. There is no treatment for citrus canker; effective control against the spread of Xac is usually achieved by the elimination of affected plants along with that of asymptomatic neighbors. An in depth understanding of the pathogen is the keystone for un...
Selection of Xilose-Fermenting Yeast Strains
Silva,Rosimeire Oenning da; Cereda,Marney Pascoli; Gomes,Eleni; Martins,Gisele Marta; Pagnocca,Fernando Carlos; Silva,Roberto daABSTRACT In Brazil, ethanol is obtained by fermentat of sugar cane juice using Saccharomyces cerevisiae. The cane juice extraction generates the bagasse that has been used for obtaining generation biofuel. However, the sugarcane bagasse has 30% pentose that cannot be fermented to ethanol by S. cerevisiae. Thus the aim of this study was to isolate a yeast able to ferment xylose to ethanol. Samples of cane juice ...
Selection of thermophilic and thermotolerant fungi for the production of cellul...
Moretti,Marcia M. S.; Bocchini-Martins,Daniela A.; Silva,Roberto Da; Rodrigues,André; Sette,Lara D.; Gomes,EleniTwenty-seven thermophilic and thermotolerant fungal strains were isolated from soil, decaying organic matter and sugarcane piles based on their ability to grow at 45ºC on medium containing corn straw and cardboard as carbon sources. These fungi were identified in the genera Aspergillus, Thermomyces, Myceliophthora, Thermomucor and Candida. The majority of the isolated strains produced xylanase and cellulases un...
Chemical and sensory characteristics of pulp and peel 'cajá-manga' (Spondias cy...
Lago-Vanzela,Ellen Silva; Ramin,Priscila; Umsza-Guez,Marcelo Andrés; Santos,Ginaldo Vieira; Gomes,Eleni; Silva,Roberto daCajá-manga (Spondias cytherea) is a fruit with intense aroma and a sweet sour taste, thus being very appreciated. Its peel, in spite of being more fibrous, is tender and many times consumed with the pulp. The peel is a part of foods normally discarded, but many times, it is rich in taste and fibers, representing an option at the elaboration of new foods. Since there are no reports in the literature on the use o...
Effect of pectinolitic enzymes on the physical properties of caja-manga (Spondi...
Umsza-Guez,Marcelo Andres; Rinaldi,Rebeca; Lago-Vanzela,Ellen Silva; Martin,Natalia; Silva,Roberto da; Gomes,Eleni; Thoméo,João CláudioCajá-manga, also known as golden apple and hog-plum, is an exotic fruit native from Îles de la Société (French Polynesia), which was first introduced in Brazil in 1985. The pulp of ripe fruit was treated with the commercial enzymatic pool and its effect was evaluated in terms of yield, as well as the physical properties viscosity, turbidity and color (L* values). Response surface methodology was used and three ...
Physical-chemical, caloric and sensory characterization of light jambolan (Syzy...
Lago-Vanzela,Ellen Silva; Santos,Ginaldo Vieira dos; Lima,Fernanda Arcaro de; Gomes,Eleni; da Silva,RobertoIn Brazil, several little economically explored fruits have good potential as raw material for the agro-industry. This study aimed to produce and determine the physical-chemical and sensory characteristics of light jambolan jelly. This fruit has intense purple color, which gave the jellies - both standard and light - a quite attractive visual aspect. The light jellies exhibited similar physical-chemical charact...
Xylanase production by Aspergillus awamori under solid state fermentation condi...
Umsza-Guez,Marcelo A.; Díaz,Ana B.; Ory,Ignacio de; Blandino,Ana; Gomes,Eleni; Caro,IldefonsoIn this work, tomato pomace, a waste abundantly available in the Mediterranean and other temperate climates agro-food industries, has been used as raw material for the production of some hydrolytic enzymes, including xylanase, exo-polygalacturonase (exo-PG), cellulase (CMCase) and α-amylase. The principal step of the process is the solid state fermentation (SSF) of this residue by Aspergillus awamori. In severa...
Poliporóides (Basidiomycota) em fragmentos de mata no perímetro urbano de São J...
Abrahão,Maira Cortellini; Gugliotta,Adriana De Mello; Gomes,EleniFoi realizado levantamento das espécies de fungos poliporóides que ocorrem no perímetro urbano do município de São José do Rio Preto (20º49'12" S, 49º22'44" W), Estado de São Paulo, Brasil. Foram identificadas 18 espécies pertencentes a 11 gêneros de Agaricales (Schizophyllaceae), Hymenochaetales (Hymenochaetaceae) e Polyporales (Ganodermataceae, Gloeophyllaceae, Meruliaceae e Polyporaceae): Coriolopsis floccos...
Ligninases production by Basidiomycetes strains on lignocellulosic agricultural...
Gomes,Eleni; Aguiar,Ana Paula; Carvalho,Caio César; Bonfá,Maricy Raquel B.; Silva,Roberto da; Boscolo,MauricioWood rotting Basidiomycetes collected in the "Estação Ecológica do Noroeste Paulista", São José do Rio Preto, São Paulo State, Brazil, concerning Aphyllophorales order and identified as Coriolopsis byrsina SXS16, Lentinus strigellus SXS355, Lentinus sp SXS48, Picnoporus sanguineus SXS 43 and Phellinus rimosus SXS47 were tested for ligninases production by solid state fermentation (SSF) using wheat bran or rice ...