A5032035669- Algal biology and biofuel production
- Biodiesel Production and Applications
- Enzyme Catalysis and Immobilization
- Catalysis and Hydrodesulfurization Studies
- Agricultural and Food Sciences
- Plant Growth Enhancement Techniques
- Marine and coastal plant biology
- Seaweed-derived Bioactive Compounds
- Microencapsulation and Drying Processes
- Insect Pest Control Strategies
- Marine and coastal ecosystems
- Essential Oils and Antimicrobial Activity
- Catalysis for Biomass Conversion
- Thermochemical Biomass Conversion Processes
- Coffee research and impacts
Universidade Federal do Rio de Janeiro
2014-2024
Universidade Federal do Rio Grande
2011
In this study different methods were applied for lipids extraction from the dry biomass of Chlorella pyrenoidosa. The survey was carried under conditions seeking comparative assessment methods. method using chloroform:methanol (2:1 v/v) showed highest lipid followed by methanol, chloroform, ethanol, and hexane. Afterward, we also assessed relative influence solvent extractor selectivity on overall FAMEs (Fatty Acids Methyl Esters) yield. application transesterification process several...
Global increases in atmospheric CO2 and climate change are drawing considerable attention to identify sources of energy with lower environmental impact than those currently use. Biodiesel production from microalgae lipids can, the future, occupy a prominent place generation because it represents sustainable alternative petroleum-based fuels. Several species produce large amounts per biomass unit. Triacylglycerol is fatty acid used for biodiesel main source reserves microalgae. The current...
This work studies the saponification which directs wet biomass of algae Chlamydomonas sp. like a previous stage to production biodiesel. allows obtainment fatty acids produce biodiesel, instead gross lipid fraction. In addition acids, utilizing same process one can also obtain fraction unsaponifiable, these are soluble in apolar solvents and contain mainly carotenoids that take action as antioxidants photoprotectors, they reduce oxidation unsaturated acids. The direct extraction from is...
Amidation of renewable feedstocks, such as fatty acids, esters, and Chlorella alga based biodiesel, was demonstrated with zeolites mesoporous materials catalysts ethanolamine, alaninol, leucinol. The last two can be derived from amino acids present in alga. main products were alkanol amides the corresponding ester amines, confirmed by NMR IR spectroscopy. Thermal amidation technical-grade oleic acid stearic at 180 °C ethanolamine non-negligible; both gave 61% conversion. In conversion over...
The lipid composition in terms of the amount neutral lipids, free fatty acids and polar content is great importance to make full use possible this fraction define suitability its application, either as a raw material for fuel production, nutraceutical purposes or feed. In addition components present extract, other may be included, such as: carotenoids, pigments sterols. microalgae studied work, Scenedesmus sp. Desmodesmus sp., were subjected same growth conditions evaluated content,...
Due to the growing demand for fuels and consequent concern with problems related burning of these products, interest arises in developing new technologies linked use natural resources generate renewable energy1,2, replacing conventional sources. Based on this assumption, biomass is an excellent alternative biofuel production.3 Microalgae have shown great advantages compared traditional agricultural crops. a high production capacity oil per unit area4; are adaptable crops, including using...
The production of microalgae on a commercial scale began in the 1970s. From this time until today it has consolidated itself as an alternative for human consumption and animal feed, mainly through aquaculture (carcinoculture, oyster farming, fish farming). Currently, most micro-algal biomass that been produced photoautotrophic systems comes from four main genera ( Chlorella , Arthrospira Dunaliella Haematococcus ). Recent advances allowed Nannochloropsis Euglena cultivation open ponds feed...
Renewable hydrocarbons refer to fuels consisting of 10 20 carbon atoms, produced from biomass, and free oxygen. Hydrocracking, hydrodeoxygenation hydrotreatment processes for the production renewable are described in literature. Microalgae have been targeted recent years synthesize biomass that can be used biofuels, such as hydrocarbons, biodiesel or ethanol second generation. In this context lineage Monoraphidium sp. was selected previous ecophysiological studies its potential produce...
Microalgae biomass has been reported in the literature as one of most promising sources for obtaining different products industrial interest such lipids, fatty acids, carotenoids, proteins and fibers. The lipid fraction microalgae comprises neutral free acids polar lipids. It is great importance to estimate composition define potential use, either a raw material production biofuels or use nutraceuticals and/or food purposes. Scenedesmus sp. cultivated photobioreactor, sky open raceway type,...
Os óleos vegetais (OVs) são utilizados por diferentes indústrias devido, principalmente, à presença de substâncias com potencial bioativo e sensorial. e, entre eles, o óleo café susceptíveis oxidação, que reduz sua qualidade seu tempo prateleira. Uma das formas preservar componentes dos OVs é meio microencapsulamento. O objetivo deste trabalho identificar as tendências internacionais no microencapsulamento OVs, em particular do patentes depositadas bases dados nacionais internacionais, além...
Os óleos vegetais (OVs) são utilizados por diferentes indústrias devido, principalmente, à presença de substâncias com potencial bioativo e sensorial. e, entre eles, o óleo café susceptíveis oxidação, que reduz sua qualidade seu tempo prateleira. Uma das formas preservar componentes dos OVs é meio microencapsulamento. O objetivo deste trabalho identificar as tendências internacionais no microencapsulamento OVs, em particular do patentes depositadas bases dados nacionais internacionais, além...