Microbial Enhance of Chitosan Production by Rhizopus arrhizus Using Agroindustrial Substrates

Cardoso, Antônio Ismael Inácio; Lins, C. I. M.; Santos, Ednaldo Ramos dos; Silva, Marta C Freitas; Campos-Takaki, Galba Maria de

doi:10.3390/molecules17054904

Cited by 48 publications

(33 citation statements)

References 15 publications

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“…Contribution by substrates from food residues in the production of other fungal metabolites are also exposed in current researches [47,48]. Degradation of food residues for obtaining biomolecules via fermentation was dependent on nitrogen, and was considered as a source essential in these processes.…”

Section: Enzyme Activity Of P Chrysosporiummentioning

confidence: 99%

Application of immobilized fungi on food efluent treatment using airlift reactor

Solache

Muro-Urista

Aguilar

et al. 2015

Desalination and Water Treatment

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2015): Application of immobilized fungi on food efluent treatment using airlift reactor, Desalination and Water Treatment,Depuration capacity of immobilized Phanerochaete chrysosporium was tested on food effluents which showed high COD, sugar, and nitrogen concentration. Comparative study in airlift reactor and agitated flasks was performed to determine an effective depuration treatment with suspended and immobilized biomass into alginate spheres. While enzymetic production was analyzed in these sytems in order to evaluate influence of the immobilization micro-organism, effluent composition, and aeration mechanism. In addition, the use of seed lettuce allowed evaluating the quality and effectiveness of the studied effluent treatment system. In particular, all tests showed that COD and color of the effluent was reduced by airlift cultures. Treatment achieved a decline in 85% of COD in 120 h. While experiments with 33 PCU color showed high efficiency (100%) in decolourization period of 5 h. Maximum laccase production was mainly found in airlift system with suspended biomass, whereas manganese peroxidase was detected on immobilized micro-organism. Toxicity tests revealed that treated food effluent was not phytotoxic; conversely effluent contains sufficiently high concentrations of nutrients to ensure the germination and lettuce growth.

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Section: Enzyme Activity Of P Chrysosporiummentioning

confidence: 99%

Application of immobilized fungi on food efluent treatment using airlift reactor

Solache

Muro-Urista

Aguilar

et al. 2015

Desalination and Water Treatment

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“…Recently, Cardoso et al (2012) have showed that the filamentous fungus R. arrhizus has chitin and Chitosan polymers in the structure of its cell wall [29]. Chitin/Chitosan was a component of fungal cell wall and the major site of sorption [9].…”

Section: The Effect Of Ph On Decolorization Of Fungimentioning

confidence: 99%

Application of mixed fungal biomass for effective reactive dye removal from textile effluents

Gül

Dönmez

2013

Desalination and Water Treatment

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Reactive Remazol Blue (RB) removal properties of growing Aspergillus versicolor and Rhizopus arrhizus were investigated as a function of initial pH (3-7) and dye concentration (50-800 mg/L) in low-cost molasses medium. Decolorization activity of mixed (A. versicolor and R. arrhizus together) culture in the absence and presence of (0.5 and 1 mM) dodecyl trimethyl ammonium bromide (DTAB) was examined at optimal conditions. A. versicolor and R. arrhizus exhibited maximum decolorization at pH 6 as 89.4% and at pH 3 as 69.23% at 100 mg/L dye concentration in six days. The decolorization of A. versicolor depended on fungal growth but R. arrhizus was related with its positively charged surface. Decolorization by both fungi decreased with increasing dye concentration up to 800 mg/L. The mixed culture decolorized 86.5% and 100% of 100 mg/L RB in the absence and presence of 0.5 mM DTAB in three days. Decolorization activities by R. arrhizus (10.06%), A. versicolor (15.79%), the mixed culture (26.59%), the mixed culture with 0.5 mM (61.33%) and 1 mM DTAB (73.19%) were compared at 800 mg/L RB in three days. The results of this study show that the systems contained mixed culture with surfactant that decolorized high level of reactive dye concentration effectively.

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“…The surface charge became negative at pH > 5.5 and cationic MB dye removal was maximal at pH 6 (Table2). Recently, it has been reported that the filamentous fungus R. arrhizus has chitin and chitosan polymers in the structure of its cell wall (Cardoso et al, 2012). Chitin/chitosan is a component of fungal cell walls and the major site of sorption (Fu and Viraraghavan, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…The genus Rhizopus comprises of filamentous fungi extensively found in soil (Cardoso et al, 2012). The filamentous fungal strains are of great interest for biotechnological applications such as wastewater treatment because polymers are present in the structure of the cell wall which are responsible for the adsorption of dyes and other pollutants (Aksu, 2001).…”

Section: Introductionmentioning

confidence: 99%

Treatment of dyeing wastewater including reactive dyes (Reactive Red RB, Reactive Black B, Remazol Blue) and Methylene Blue by fungal biomass

Gül¹

2013

WSA

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The decolourisation potential of growing Rhizopus arrhizus fungal strain in liquid medium containing thiamine was investigated for the removal of anionic reactive dyes such as Reactive Red RB (RR), Reactive Black B (RBB) and Remazol Blue (RB) and a cationic basic dye Methylene Blue (MB). To determine the optimal pH value, pH 2 to 6 was examined. Fungal growth was not observed at pH 2. Maximum fungal decolourisation ocurred at pH 3 for anionic reactive dyes (RR, RBB, RB) and pH 6 for cationic MB dye. The fungal dye bioremoval was associated with the surface charge of the fungus due to electrostatic interactions. Growing R. arrhizus strain decolourised 100% of RB in 2 days, 100% of RBB in 3 days, 71.83% of RR in 8 days at pH 3 and 92.5% of MB in 8 days at pH 6 at 100 mg/ℓ dye concentration. Results indicate that growing Rhizopus arrhizus is an effective candidate for removal of different types of dyes from textile effluents.

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Microbial Enhance of Chitosan Production by Rhizopus arrhizus Using Agroindustrial Substrates

Cited by 48 publications

References 15 publications

Application of immobilized fungi on food efluent treatment using airlift reactor

Application of immobilized fungi on food efluent treatment using airlift reactor

Application of mixed fungal biomass for effective reactive dye removal from textile effluents

Treatment of dyeing wastewater including reactive dyes (Reactive Red RB, Reactive Black B, Remazol Blue) and Methylene Blue by fungal biomass

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