Data/hora: 12/06/2024 09:54:47

Provedor de dados: | 52
País: | Brazil
Título: | Effect of moisture content and inoculum on the growth and conidia production by Beauveria bassiana on wheat bran
Autores: | Nuñez-Gaona,Oscar; Saucedo-Castañeda,Gerardo; Alatorre-Rosas,Raquel; Loera,Octavio.
Data: | 2010-08-01
Ano: | 2010
Palavras-chave: | Beauveria bassiana; Wheat bran; Water activity; Texturiser; Conidial yields.
Resumo: | The aim of the present work was to study the effect of moisture content and inoculum on the growth and conidia production by Beauveria bassiana on wheat bran (WB).The highest growth rate of B. bassiana 885.2 on WB media was obtained at a w=1.0, with no detected growth at a w &lt; 0.97. Solid-state fermentation (SSF) using WB (66% moisture; a w=1.0) achieved a maximal yield of 1.18x10 10 conidia per gram of dry substrate (gds). This yield decreased one order of magnitude with higher moisture contents or the addition of sugarcane bagasse (SCB) as a texturiser. In SSF using WB (66% humidity),the time to obtain a yield of 1x10(10) conidia/gds, referred to as t10, could be predicted using a model considering common inoculum levels and maximal yields. For instance, t10 was 285 h with an inoculum of 1x10(6) conidia/gds; however, t10 was reduced to 232 h and 148 for inocula of 7x10(6) and 5x10(7) conidia/gds, respectively. The estimation of t10 values allowed both comparison between the cultures and prediction of harvesting times in production processes. Values for hydrophobicity were within 90 and 92%, whereas viability averages were around 70% for all the cultures
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400004
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132010000400004
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.53 n.4 2010
Fonte: | info:eu-repo/semantics/openAccess