19 documents found, page 1 of 2
Influence of Inhibitors Generated in Lignocellulosic Hydrolysates from Group of...
Gaspar, Suelen S.; Alves Ferreira Caturra, Júnia Aparecida; Moniz, Patricia; Silva-Fernandes, Talita; Silvestre, Adriana I. R; Torrado, IvoneABSTRACT: Concerns over fossil fuels are of increasing interest in biorefineries that utilize lignocellulosic residues. Besides sugars, inhibitors are formed during biomass pretreatment, including acetic acid (AI) and formic acid (FI), which can hinder microbial fermentation. The TG1 and Tuner strains of Escherichia coli were subjected to various acid concentrations. Samples were taken during fermentation to mo...
Green Fractionation Approaches for the Integrated Upgrade of Corn Cobs
Fialho, João; Moniz, Patricia; Duarte, Luís C.; Carvalheiro, FlorbelaABSTRACT: Corn cob is an abundant agricultural residue worldwide, with high potential and interesting composition, and its valorization still needs to be studied. Selectively fractionating its structural components (hemicellulose, cellulose, and lignin), value-added products can be produced, eliminating waste. In this work, integrated fractionation approaches were developed and evaluated. First, an organosolv p...
The Biorefinery of the Marine Microalga Crypthecodinium cohnii as a Strategy to...
Moniz, Patricia; Martins, Daniela; Oliveira, Ana Cristina; Reis, Alberto; Silva, Teresa Lopes daABSTRACT: Chrypthecodinium cohnii lipids have been almost exclusively used as a source of Docosahexaenoic acid (DHA). Such an approach wastes the remaining microalgal lipid fraction. The present work presents a novel process to produce C. cohnii biomass, using low-cost industrial by-products (raw glycerol and corn steep liquor), in a 7L-bioreactor, under fed-batch regime. At the end of the fermentation, the bio...
Cascading Crypthecodinium cohnii biorefinery: global warming potential and tech...
Silva, Carla; Moniz, Patricia; Oliveira, Ana Cristina; Vercelli, Samuela; Reis, Alberto; Silva, Teresa Lopes daABSTRACT: Prior to the commissioning of a new industrial biorefinery it is deemed necessary to evaluate if the new project will be beneficial or detrimental to climate change, one of the main drivers for the sustainable development goals (SDG) of the United Nations. In particular, how SDG 7, Clean and Efficient Energy, SDG 3, Good Health and Well Being, SDG 9, Industry Innovation and Infrastructure, and SDG 12,...
Fermentation Wastes from Chrypthecodinium cohnii Lipid Production for Energy Re...
Eusebio, Ana; Moniz, Patricia; Silva, Teresa Lopes da; Marques, Isabel PaulaABSTRACT: Wastes generated during the cultivation of marine microalga Crypthecodinium cohnii and after the lipid extraction process, were energetically valorized into biogas production through anaerobic digestion (AD). The tested wastes were extracted microalgae (Ae) with hexane (AeH) using supercritical extraction methods (AeS) and the supernatant obtained after culture medium centrifugation (M). The digestion...
The role of heterotrophic microalgae in waste conversion to biofuels and biopro...
Silva, Teresa Lopes da; Moniz, Patricia; Silva, Carla; Reis, AlbertoABSTRACT: In the last few decades, microalgae have attracted attention from the scientific community worldwide, being considered a promising feedstock for renewable energy production, as well as for a wide range of high value-added products such as pigments and poly-unsaturated fatty acids for pharmaceutical, nutraceutical, food, and cosmetic markets. Despite the investments in microalgae biotechnology to date,...
Raw Glycerol Based Medium for DHA and Lipids Production, Using the Marine Heter...
Moniz, Patricia; Silva, Carla; Oliveira, Ana Cristina; Reis, Alberto; Silva, Teresa Lopes daABSTRACT: Crude glycerol, a biodiesel industry byproduct, and corn steep liquor (CSL) derived from a starch industry, were used as carbon and nitrogen sources, respectively, for lipid production, using the heterotrophic microalga C. cohnii grown in a bench bioreactor, in a batch culture. The maximum biomass concentration, lipid content and lipid productivity attained were 5.34 g/L, 24.6% (w/w Dry Cell Weight-DC...
The role of heterotrophic microalgae in waste conversion to biofuels and biopro...
Silva, Teresa Lopes da; Moniz, Patricia; Silva, Carla; Reis, AlbertoABSTRACT: In the last few decades, microalgae have attracted attention from the scientific community worldwide, being considered a promising feedstock for renewable energy production, as well as for a wide range of high value-added products such as pigments and poly-unsaturated fatty acids for pharmaceutical, nutraceutical, food, and cosmetic markets. Despite the investments in microalgae biotechnology to date,...
Evaluating low-cost substrates for Crypthecodinium cohnii lipids and DHA produc...
Taborda, Tiago; Moniz, Patricia; Reis, Alberto; Silva, Teresa Lopes daABSTRACT: Crypthecodinium cohnii growth was studied on pure carbon sources (glucose, acetate, glycerol) and low-cost complex carbon sources (sugarcane molasses, crude glycerol and vinegar effluent) for lipid and DHA production. Among the pure substrates, glucose induced the highest lipid content (14.75% w/w DCW) and DHA content (7.14 mg g(-1) DCW). Among the low-cost substrates, the highest lipid and DHA conten...
A face escura da biotecnologia de microalgas : a biorefinaria de microalgas het...
Silva, Teresa Lopes da; Moniz, Patricia; Reis, AlbertoRESUMO: As microalgas podem crescer em substratos de baixo custo, como subprodutos ou efluentes industriais, conseguindo remover poluentes e, simultaneamente, produzir biocompostos com interesse comercial, contribuindo, desta forma, para o desenvolvimento da bioeconomia mundial. As microalgas autotróficas utilizam o dióxido de carbono como fonte de carbono, e necessitam de luz para se desenvolverem. As microalg...