Influência do substrato no cultivo e na composição química do cogumelo Pleurotus florida

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência da fase I de compostagem e da esterilização do composto no cultivo de duas linhagens do Pleurotus ostreatus var. Florida

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Growth of Pleurotus ostreatus in culture media based on formulated straw or grass

Mycelial growth strains of POS 98/38, POS 09/100, POS 09/101, and POS 09/102 of Pleurotus ostreatus were evaluated in culture media with various compositions based on extracts of substrates formulated with sugar cane bagasse together with straws and grasses, and with or without nitrogen supplementation. The evaluation was performed during incubation regularly with a ruler graduated in millimeters until total colonization of the culture medium contained in Petri dishes. The statistical model explaining the kinetics of mycelial growth of mushroom strains of P. ostreatus as a deterministic component has an exponential Gompertz function. The results show that the culture medium with sugar cane straw and brizantha grass (supplemented) showed the highest rates of mycelial growth, regardless of strain used compared to wheat straw-based culture media with had the lowest velocities of growth, regardless of supplementation and strains studied.

Molecular characterization of Pleurotus ostreatus commercial strains by random amplified polymorphic DNA (RAPD)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cinética micelial dos fungos comestíveis Pleurotus ostreatus e Lentinula edodes em resíduos lignocelulósicos

The objective of this work was to evaluate the mycelial growth of 2 edible fungi (Pleurotus ostreatus and Lentinula edodes) in 6 culture media [(malt-agar, sawdustdextrose-agar-marupá (SDA-MA), sawdust-dextrose-agar-cajuí (SDA-CA), sawdust-dextrose-agaraçaí (SDA-AÇA), sawdust-dextrose-agar-banana 50% (BAN 50%) and sawdust-dextrose-agar-banana 100% (BAN 100%)], in Petri dishes. The experimental design was totally randomized, in a 6x2 factorial scheme. Each treatment consisted of six repetitions in 1 Petri dish, totaling 72 experimental units. It was verified that P. ostreatus presented better mycelial development (81.00; 64.66; 81.00; 50.16 and 33.33mm for SDA-MA, SDA-CA, SDA-AÇA, BAN 50% and BAN 100%, respectively) than L. edodes (32.00; 31.66; 27.66; 37.33 and 21.83mm for SDA-MA, SDA-CA, SDA-AÇA, BAN 50% and BAN 100%, respectively). It was also verified that there was no advantage for L. edodes in relation to mycelial growth, when media based on residues were used, compared to malt-agar medium (control), which obtained the best performance (62.17mm). As for P. ostreatus, SDA-MA and SDA-AÇA medium presented the highest growth averages (81 mm), representing a growth increase of 34% in relation to the control medium (malt-agar), whose growth average was 60.33mm. Thus, the residues tested present potential to be used in fungiculture, especially for the cultivation of P. ostreatus.

Composição mineral de substratos à base de resíduos de bananeira durante o cultivo de Pleurotus ostreatus

The objective of this study was to evaluate the mineral composition (macro e micronutrients) of the substrates [initial and residual (postharvest)] based on different combinations of waste (leaf, pseudo-stem and pseudostem + leaf) and banana cultivars - Musa spp. (Thap Maeo, Prata Anã, Pelipita and Caipira) during 49 days for the cultivation of POS 09/100 strain of P. ostreatus. It was verified that all of the substrates based on different combinations of waste and banana cultivars presented satisfactory amounts of nutrients for the cultivation of P. ostreatus, both in the initial phase of cultivation and in the end.

Cultivo in vitro de Pleurotus ostreatus em resíduos de bananeira

The objective of this paper was to evaluate the mycelial growth of Pleurotus ostreatus (strain POS 09/100) in culture media based on different banana tree residues. The experimental design was totally randomized in 3 x 4 factorial scheme and consisted in three combinations of residues (pseudostem, leave and pseudostem + leave) and four banana tree cultivars (Thap Maeo, Prata Anã, Pelipita and Caipira), totalizing twelve treatments each with five repetitions, adding up sixty experimental units. Growth was measured every 24 hours until the mycelium of one of the treatments reached the border of the Petri dish, what occurred five days after the beginning of the experiment. The results obtained showed that all the combinations of banana tree residues were favorable to P. ostreatus mycelial growth, especially pseudostem + leaf of Pelipita, Thap maeo and Prata anã cultivars. Thus, the use of banana tree residues is viable for cultivation of P. ostreatus, and considered as an excellent alternative, besides reducing their disposal in the environment.

Parâmetros industriais para produção de Pleurotus ostreatus

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cultivo de Lentinula edodes e Pleurotus ostreatus em bagaço de cana-de-açúcar

Pós-graduação em Microbiologia - IBILCE

Applicability of the use of waste from different banana cultivars for the cultivation of the oyster mushroom

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Decolorization of textile indigo dye by ligninolytic fungi

The indigo dye is extensively used by textile industries and is considered a recalcitrant substance, which causes environmental concern. Chemical products used on textile processing, which affect the environment through effluents, can be voluminous, colored and varied. Vat textile dyes, like indigo, are often used and dye mainly cellulosic fibers of cotton. Decolorization of this dye in liquid medium was tested with ligninolytic basidiomycete fungi from Brazil. Decolorization started in a few hours and after 4 days the removal of dye by Phellinus gilvus culture was in 100%, by Pleurotus sajor-caju 94%, by Pycnoporus sanguineus 91% and by Phanerochaete chrysosporium 75%. No color decrease was observed in a sterile control. Thin layer chromatography of fungi culture extracts revealed only one unknown metabolite of Rf = 0.60, as a result of dye degradation. (C) 2001 Published by Elsevier B.V. B.V.

Mushroom-derived preparations in the prevention of H2O2-induced oxidative damage to cellular DNA

Aqueous extracts of the sporophores of eight mushroom species were assessed for their ability to prevent H2O2-induced oxidative damage to cellular DNA using the single-cell gel electrophoresis (Comet) assay. The highest genoprotective effects were obtained with cold (20°C) and hot (100°C) water extracts of Agaricus bisporus and Ganoderma lucidum fruit bodies, respectively. No protective effects were observed with Mushroom Derived Preparations (MDPs) from Flammulina velutipes, Auricularia auricula, Hypsizygus marmoreus, Lentinula edodes, Pleurotus sajor-caju, and Volvariella volvacea. These findings indicate that some edible mushrooms represent a valuable source of biologically active compounds with potential for protecting cellular DNA from oxidative damage. © 2002 Wiley-Liss, Inc.

Estudo comparativo de diferentes cogumelos comestíveis comercializados no Brasil: ação contra radicais livres, espécies reativas e atividade antibacteriana

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Linhagens fúngicas na hidrólise enzimática de bagaço de cana-de-açúcar

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Degradação de tocos de Eucalyptus grandis por fungos

Pós-graduação em Agronomia (Proteção de Plantas) - FCA