Mixed yeasts inocula for simultaneous production of SCP and treatment of vinasse to reduce soil and fresh water pollution

Pires, Josiane Ferreira; Ferreira, Gustavo Magno dos Reis; Reis, Kelly Cristina dos; Schwan, Rosane Freitas; Silva, Cristina Ferreira

doi:10.1016/j.jenvman.2016.08.006

Cited by 39 publications

(11 citation statements)

References 38 publications

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“…Fermentation of waste, before disposal, may solve this problem [ 27 ]. Carbohydrates released during hydrolysis could be utilized by microorganisms in the process of cell proliferation, and the biomass obtained could be used as a protein supplement in animal feed [ 28 ]. Microbial biomass is defined as a form of single cell protein (SCP), and may be useful as a dietary additive.…”

Section: Introductionmentioning

confidence: 99%

Concept for Recycling Waste Biomass from the Sugar Industry for Chemical and Biotechnological Purposes

et al. 2017

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The objective of this study was to develop a method for the thermally-assisted acidic hydrolysis of waste biomass from the sugar industry (sugar beet pulp and leaves) for chemical and biotechnological purposes. The distillates, containing furfural, can be catalytically reduced directly into furfurayl alcohol or tetrahydrofurfuryl alcohol. The sugars present in the hydrolysates can be converted by lactic bacteria into lactic acid, which, by catalytic reduction, leads to propylene glycol. The sugars may also be utilized by microorganisms in the process of cell proliferation, and the biomass obtained used as a protein supplement in animal feed. Our study also considered the effects of the mode and length of preservation (fresh, ensilage, and drying) on the yields of furfural and monosaccharides. The yield of furfural in the distillates was measured using gas chromatography with flame ionization detector (GC-FID). The content of monosaccharides in the hydrolysates was measured spectrophotometrically using enzymatic kits. Biomass preserved under all tested conditions produced high yields of furfural, comparable to those for fresh material. Long-term storage of ensiled waste biomass did not result in loss of furfural productivity. However, there were significant reductions in the amounts of monosaccharides in the hydrolysates.

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Section: Introductionmentioning

confidence: 99%

Concept for Recycling Waste Biomass from the Sugar Industry for Chemical and Biotechnological Purposes

et al. 2017

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“…N. rattus SCP has a series of essential amino acids: threonine, valine, methionine, isoleucine, leucine, phenylalanine, and lysine. The content of essential amino acids in N. rattus SCP is 3.77% higher than that of B. adeninivorans and similar to that of Saccharomyces cerevisiae strain, CCMA 0137 ( Pires et al., 2016 ) . These amino acids are especially important for the maintenance and tissue protein hyperplasia of broilers ( Sakomura et al., 2015 ).…”

Section: Resultsmentioning

confidence: 63%

The production of single cell protein from biogas slurry with high ammonia-nitrogen content by screened Nectaromyces rattus

et al. 2021

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In this study, a novel method was proposed to obtain single cell protein ( SCP ) in yeast by using biogas slurry as culture medium. The results show that Nectaromyces rattus was the most efficient at producing SCP among the 7 different yeasts studied. Acetic acid was a better pH regulator than hydrochloric acid. After culture with the initial NH 4 + -N concentration 2,000 mg/L, C/N ratio 6:1, the initial pH 5.50 and rotation speed of 200 rpm, a total cell dry weight of 12.58 g/L with 35.96% protein content was obtained. Nineteen amino acids accounted for 46.85% of cell dry weight, and proline content was as high as 12.0% of the cell dry weight. However, sulfur-containing amino acids, including methionine and cystine, were deficient. Further research should focus on the high cell density culture to increase SCP production.

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“…Segundo Souza et al (2016), sistemas de plantio de cafeeiro em sol pleno podem reduzir a qualidade do solo. Comprovando esse fato, no presente estudo, o cafeeiro nos sistemas SM e SI apresentou melhores valores de atributos microbiológicos (Tabela 1), os quais são importantes indicadores de condições ambientais (Pires et al, 2016;Yan et al, 2015;Geisseler e Scow, 2014).…”

Section: Resultsunclassified

Sistema agroflorestal cafeeiro-abacateiro e seus efeitos na qualidade do solo (Agroforestry system coffee-avocado and its effect on soil quality)

Pavan

Melloni

Alvarenga

et al. 2018

Rev. Bras. Geog. Fis.

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Os sistemas agroflorestais (SAFs) são uma alternativa aos métodos tradicionais de cultivo, com maior aproveitamento dos serviços ecossistêmicos proporcionados pela interação entre as diferentes culturas. Entretanto, estudos dessa interação devem ser incentivados, de forma a selecionar a melhor combinação de culturas e manejo a ser aplicado. O objetivo desse trabalho foi avaliar o impacto de diferentes níveis de sombreamento do cafeeiro por abacateiros, nas qualidades física, química e microbiana do solo. Para isso, uma área de cultivo cafeeiro-abacateiro, localizada ao sul de Minas Gerais, foi dividida em três sub-áreas, conforme o nível de sombreamento proporcionado pelo abacateiro, sendo 0% sombreado (SP-sol pleno), 30% sombreado (sombreamento mediano) e 89% sombreado (sombreamento intenso), com coleta de amostras do solo em duas profundidades, 0-10 cm e 10-20 cm. Os resultados mostraram que o SAF cafeeiro-abacateiro não afetou a qualidade física e química do solo. Contrariamente, a qualidade microbiana foi melhorada com o sombreamento, indicando maior benefício agroecológico com a implantação desse SAF. Palavras-chave: agroecossistema, SAF, Coffee arabica L., Persea americana Mill. Agroforestry system coffee-avocado and its effect on soil quality A B S T R A C T Agroforestry systems (AFSs) are an alternative to traditional methods of cultivation, with greater use of the ecosystem services provided by the interaction between different cultures. However, studies of this interaction should be encouraged in order to select the best combination of crops and management applied. The objective of this work was to evaluate the impact of different levels of coffee shading by avocado trees on the physical, chemical and microbial qualities of the soil. For this, an area of coffee-avocado cultivation, located at south of Minas Gerais, was divided into three sub-areas, according to the level of shade provided by the avocado tree, being 0% shaded (SP-full sun), 30% shaded (mean shading) and 89% shade (intense shading), with soil samples collected at two depths, 0-10 cm and 10-20 cm). The results showed that the coffee-avocado did not affect the physical and chemical quality of the soil. In contrast, the microbial quality was improved with shading, indicating a greater agroecological benefit with the implementation of this AFS.

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Mixed yeasts inocula for simultaneous production of SCP and treatment of vinasse to reduce soil and fresh water pollution

Cited by 39 publications

References 38 publications

Concept for Recycling Waste Biomass from the Sugar Industry for Chemical and Biotechnological Purposes

Concept for Recycling Waste Biomass from the Sugar Industry for Chemical and Biotechnological Purposes

The production of single cell protein from biogas slurry with high ammonia-nitrogen content by screened Nectaromyces rattus

Sistema agroflorestal cafeeiro-abacateiro e seus efeitos na qualidade do solo (Agroforestry system coffee-avocado and its effect on soil quality)

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