Made available in DSpace on 2014-06-11T19:27:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-07-31Bitstream added on 2014-06-13T20:56:21Z : No. of bitstreams: 1 machado_acr_me_jabo.pdf: 286825 bytes, checksum: f2ef2df876cf8ed795033e0d4e37d7da (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A busca por meios de cultura alternativos e métodos de produção, são aspectos importantes para viabilizar a utilização de fungos entomopatogênicos em larga escala. O presente trabalho avaliou, em ensaios distintos, a produção dos isolados JAB 02 e JAB 45 de Lecanicillium lecanii em meios líquidos obtidos de resíduos e subprodutos agroindustriais (água do cozimento de arroz e da prensa da mandioca, vinhaça, leite de levedura e melaço de cana-de-açúcar, soro de queijo e milhocina), e em misturas de substratos sólidos obtidos de diferentes grãos e derivados (trigo grosso e farelos de trigo e de soja com lentilha, painço, sorgo, trigo em grão, quirela de milho). A determinação dos meios mais eficientes para produção dos isolados foi baseada na avaliação da produção de conídios e de biomassa nos meios líquidos e a produção e viabilidade de conídios obtidos nos meios sólidos. Para ambos os isolados, a produção em meios líquidos favoreceu a formação de biomassa micelial, obtendo¬se os maiores valores nos meios a base de água da prensa da mandioca, soro de queijo, milhocina@ e melaço de cana-de-açúcar. Os meios sólidos que proporcionaram melhores resultados para o isolado JAB 02 foram obtidos da mistura de trigo grosso e de farelo de trigo com lentilha e com sorgo. Para JAB 45, obtiveram-se as maiores produções de conídios usando a mistura de trigo grosso com lentilha, e de farelo de trigo com painço, lentilha e trigo em grão, destacando¬se a última no qual a produção foi de 1,05 x 108 con g substrato-1. Os meios líquidos e sólidos que proporcionaram os melhores resultados foram, posteriormente, combinados em um sistema bifásico de cultivo Neste ensaio foram avaliadas a esporulação e viabilidade de conídios e o rendimento do processo. O método de cultivo não influenciou... / The search for alternative media and production methods are important aspects for the large scale use feasibility of entomopathogenic fungi. The present work evaluated the production of the isolates JAB 02 and JAB 45 of Lecanicillium lecanii, in liquid media obtained from agroindustrial residuais and byproducts (water of cooked rice and cassava bran, sugarcane vinasse, years cream, sugar cane molasses, cheese whey and milhocina@) and in combination with solid substracts obtained from different grains and its derivates (ground wheat and wheat and soybean bran's with lentil, Italian millet sorghum, wheat grain, cracked corn). The most favorable media were combined in a two-phase system, where the fungus was initially cultivated in a liquid medium and then the micelial mass was transferred to a solid medium. The determination of the most efficient production media for the isolates was based, in the liquid media, on the evaluation of conidia and biomass production, and, in the solid media, on conidia production and viability. For both isolates, the production in liquid media favored large quantity of micelial biomass, emphasizing the media based on water from cassava bran, cheese whey, milhocina@ and sugar cane moi asses. The solid media that proportionated better results, for JAB 02, were obtained from the mixture of ground wheat and wheat barn with lentil and sorghum. For JAB 45, the biggest production of conidia were obtained by the mixture of ground wheat with lentil and wheat bran combined with Italian millet, lentil and wheat grain and with lentil, emphasizing the last one with the production of 1,05 x 108 con 9 substracr1. The liquid and solid media that proportionated better results were afterwards combined in a two-phase system. In this system the conidia sporulation and viability and process income were evaluated. For JAB 02 the cultivation method did not influence the conidia... (Complete abstract click electronic access below)

Orientador: Antônio Carlos Monteiro / Banca: Maria Silvia Pereira Leite / Banca: Inajá Marchizeli Wenzel / Resumo: A busca por meios de cultura alternativos e métodos de produção, são aspectos importantes para viabilizar a utilização de fungos entomopatogênicos em larga escala. O presente trabalho avaliou, em ensaios distintos, a produção dos isolados JAB 02 e JAB 45 de Lecanicillium lecanii em meios líquidos obtidos de resíduos e subprodutos agroindustriais (água do cozimento de arroz e da prensa da mandioca, vinhaça, leite de levedura e melaço de cana-de-açúcar, soro de queijo e milhocina), e em misturas de substratos sólidos obtidos de diferentes grãos e derivados (trigo grosso e farelos de trigo e de soja com lentilha, painço, sorgo, trigo em grão, quirela de milho). A determinação dos meios mais eficientes para produção dos isolados foi baseada na avaliação da produção de conídios e de biomassa nos meios líquidos e a produção e viabilidade de conídios obtidos nos meios sólidos. Para ambos os isolados, a produção em meios líquidos favoreceu a formação de biomassa micelial, obtendo¬se os maiores valores nos meios a base de água da prensa da mandioca, soro de queijo, milhocina@ e melaço de cana-de-açúcar. Os meios sólidos que proporcionaram melhores resultados para o isolado JAB 02 foram obtidos da mistura de trigo grosso e de farelo de trigo com lentilha e com sorgo. Para JAB 45, obtiveram-se as maiores produções de conídios usando a mistura de trigo grosso com lentilha, e de farelo de trigo com painço, lentilha e trigo em grão, destacando¬se a última no qual a produção foi de 1,05 x 108 con g substrato-1. Os meios líquidos e sólidos que proporcionaram os melhores resultados foram, posteriormente, combinados em um sistema bifásico de cultivo Neste ensaio foram avaliadas a esporulação e viabilidade de conídios e o rendimento do processo. O método de cultivo não influenciou... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The search for alternative media and production methods are important aspects for the large scale use feasibility of entomopathogenic fungi. The present work evaluated the production of the isolates JAB 02 and JAB 45 of Lecanicillium lecanii, in liquid media obtained from agroindustrial residuais and byproducts (water of cooked rice and cassava bran, sugarcane vinasse, years cream, sugar cane molasses, cheese whey and milhocina@) and in combination with solid substracts obtained from different grains and its derivates (ground wheat and wheat and soybean bran's with lentil, Italian millet sorghum, wheat grain, cracked corn). The most favorable media were combined in a two-phase system, where the fungus was initially cultivated in a liquid medium and then the micelial mass was transferred to a solid medium. The determination of the most efficient production media for the isolates was based, in the liquid media, on the evaluation of conidia and biomass production, and, in the solid media, on conidia production and viability. For both isolates, the production in liquid media favored large quantity of micelial biomass, emphasizing the media based on water from cassava bran, cheese whey, milhocina@ and sugar cane moi asses. The solid media that proportionated better results, for JAB 02, were obtained from the mixture of ground wheat and wheat barn with lentil and sorghum. For JAB 45, the biggest production of conidia were obtained by the mixture of ground wheat with lentil and wheat bran combined with Italian millet, lentil and wheat grain and with lentil, emphasizing the last one with the production of 1,05 x 108 con 9 substracr1. The liquid and solid media that proportionated better results were afterwards combined in a two-phase system. In this system the conidia sporulation and viability and process income were evaluated. For JAB 02 the cultivation method did not influence the conidia... (Complete abstract click electronic access below) / Mestre

Single cell proteins such as that of edible filamentous fungal biomass are considered as a promising sustainable source of animal feed supplementation. Filamentous fungi can be cultivated on different organic substrates including volatile fatty acids (VFAs) such as acetic, propionic, and butyric acids. These VFAs can be generated through the famous waste valorisation approach of anaerobic digestion (AD) as intermediate metabolites. This project investigates a sustainable approach for the production of animal feed supplementation through cultivation of fungal biomass on waste derived VFAs along with the in vitro analysis of fungal biomass digestibility as ruminant feed. In this regard, optimum conditions for the production of Aspergillus oryzae biomass on different VFAs effluents derived from anaerobic digestion process of food waste plus chicken manure (FWCKM) and potato protein liquor (PPL) at different pH, nitrogen sources, and feed mixture was studied. Accordingly, analyses showed that PPL has the highest biomass yield with 0.4 (g biomass/g consumed VFAs) based on the volatile solids (VS) by adjusting pH to 6.2. Furthermore, the digestibility of the produced fungal biomass is analysed by using three different in vitro digestion methods including Tilley and Terry (TT) method, Gas Production Method (GPM), and Nylon Bag Method (NBM) and the results are compared with the conventional feed (silage and rapeseed meal). Results obtained from different digestibility methods illustrate that different A. oryzae fungal biomass had approximately 10-15 % higher dry matter digestibility fraction compared to silage and rapeseed meal (reference feeds). Hence, these results revealed that A. oryzae fungal biomass can grow on VFAs effluents and produce protein-rich fungal biomass while this biomass has better digestibility compared to conventional feeds and confirmed the initial hypothesis of the study.