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Ramos,Cíntia Lacerda; Duarte,Whasley Ferreira; Freire,Ana Luiza; Dias,Disney Ribeiro; Eleutherio,Elis Cristina Araújo; Schwan,Rosane Freitas. |
Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristics were observed. These strains were evaluated according to their fermentative performance in sugar cane juice. The conversion factors of substrates into ethanol (Yp/s), glycerol (Yg/s) and acetic acid (Yac/s), were calculated. The highest values of Yp/s in sugar cane juice fermentation were obtained by four strains, one isolated from fruit (0.46) and the others from sugar cane (0.45, 0.44 and 0.43).... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alcoholic fermentation; Biofuel; Fermentation kinetics; UFLA FW221; Saccharomyces cerevisiae. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300044 |
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Fontanétti,Anastácia; Carvalho,Gabriel José de; Morais,Augusto Ramalho de; Almeida,Karina de; Duarte,Whasley Ferreira. |
Objetivou-se com este trabalho verificar os possíveis efeitos físicos e/ou alelopáticos da adubação verde no manejo de plantas invasoras nas culturas posteriores de alface-americana e de repolho, visando à conversão para o sistema orgânico de cultivo. O experimento foi instalado no Setor de Olericultura da Universidade Federal de Lavras (UFLA), em Lavras MG, no período de dezembro de 2001 a agosto de 2002. O delineamento experimental adotado foi o de blocos casualizados em esquema fatorial 4x2, com 3 repetições. O primeiro fator foi constituído pelas leguminosas mucuna-preta (Stizolobium aterrimum, Piper e Tracy), feijão-de-porco (Canavalia ensiformes DC), crotalária juncea (Crotalaria juncea L.)e pela testemunha (vegetação espontânea) e o segundo fator,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leguminosa; Plantas daninhas; Cyperus rotundus; Mucuna-preta; Feijão-de-porco; Crotalária juncea. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000500001 |
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Gama,Danielly de Souza; Santos,Ítalo Augusto Férrer Melo; Abreu,Lucas Magalhães de; Medeiros,Flávio Henrique Vasconcelos de; Duarte,Whasley Ferreira; Cardoso,Patrícia Gomes. |
ABSTRACT: Fungal endophytes of Brachiaria, a nonhost of Sclerotinia sclerotiorum, may harbor species with antagonistic effects against this plant pathogen. The objective of this work was to investigate the diversity of endophytic fungi associated with different Brachiaria species and hybrids and evaluate their potential to inhibit the plant pathogen S. sclerotiorum. Stem samples from 39 Brachiaria spp. plants were collected in pasture fields and experimental areas of three states of Brazil resulting in 74 endophytes isolated. Twenty-eight species were identified by sequences of the Internal Transcribed Spacer (ITS) and 18S rDNA regions. Paraconiothyrium sp. was the most abundant endophyte, accounting for 24 % (14 isolates) of total, and it was isolated... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coniothyrium-like fungi; Urochloa; Tropical forage grasses; Antagonism; White mold. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000300200 |
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