Vea J.,FMC Biopolymer AS |
Ask E.,FMC Corporation
Journal of Applied Phycology | Year: 2011
The mechanized harvesting of Laminaria hyperborea in Norway began nearly 50 years ago. Based on a clear understanding of the ecology and life cycle of L. hyperborea as well as the ecosystem, a sustainable management program for the harvest was created with a 5-year cycle and rotating zones in fields as the foundation of the plan. This has allowed a steady annual harvest of 130,000-180,000 t wet weight, depending on market demand. In the last decade, the Norwegian government, working with industry and other stakeholders, has produced more refined policies/documents governing the harvest. This macroalgal harvest plan provides an excellent example for resource managers in other parts of the world laboring to create sustainable harvest management plans. © 2010 Springer Science+Business Media B.V.
Bril'kov M.,Hedmark University College |
Bril'kov M.,FMC Biopolymer AS |
Falck-Ytter A.B.,Hedmark University College |
Straetkvern K.O.,Hedmark University College
Fuel Processing Technology | Year: 2015
Abstract Waste frying oil (WFO) reclaimed from food processing and stripped from various impurities is considered a valuable feedstock for making biofuels. Specifically, to be used as bio-oil in industrial burners the ash content of WFO should not exceed maximum limits set for dust pollution from burners. Samples obtained from a WFO processing plant were used in a study to investigate efficient means of reducing ash to acceptable levels, i.e. < 0.015%. Since the ash mainly exists as discrete particles dispersed in the oil, physical methods of separation such as filtration, extraction, settling and centrifugation were tested. Benchmark analysis of the current full scale process employing settling and 400, 200 μm filtration steps showed that end products after heating at 600 °C, contained 0.02-0.01% ash, regardless of high (0.5%) or low (0.02%) initial ash. Experimental filtration with 45 μm screen demonstrated that ash could be reduced 40-50% further. In aqueous extraction experiments ash reduction was dependent on both water:oil ratio and the temperature, in a manner showing interaction of the two factors. Extraction at a water ratio of 0.2 at 40 °C provided a consistent 60-70% reduction including the settling effect, and obtained with test volumes up to 1 l. High-speed centrifugation offered final ash levels as low as 0.012%. However, extensively purified WFO retained a particle fraction below 10 μm. The study points to possible improvements of steps in the current WFO line. Interestingly, any measures to reduce end product ash might be offset by burner temperatures above 800 °C due to the observation that approximate 50% of the ash being carbon based material combusted above this temperature. © 2015 Elsevier B.V. All rights reserved.
Andersen T.,Norwegian University of Science and Technology |
Andersen T.,FMC Biopolymer AS |
Strand B.L.,Norwegian University of Science and Technology |
Formo K.,Norwegian University of Science and Technology |
And 2 more authors.
Carbohydrate Chemistry | Year: 2011
Alginates comprise a unique - and at the same time - diverse family of polysaccharides that allows fabrication of a variety of biomaterials suitable for tissue engineering. This is reflected in a rapidly expanding scientific literature on the subject, novel regulatory approved products, and on-going clinical trials. Alginate based biomaterials include gels and fibres for immobilisation and proliferation of mammalian cells, as well as injectable solutions and pastes with delayed gelation. The diversity of chemical compositions [for example high or low content of L-guluronic acid (G) blocks] as well as control of the molecular weight distribution and mode of gelation allow precise tailoring of pre-determined biomaterial properties. Crosslinking of alginate chains may be obtained either by the classical calcium route, or by covalent crosslinking. Derivatives such as peptidecoupled alginates or periodate oxidised alginates allow enhanced cell enhancement and proliferation, and enhanced depolymerisation, respectively. Recent advances in the study of alginate biosynthesis in bacteria, in particular the discovery of several processive mannuronan C5-epimerases with different epimerisation patterns, have provided a remarkable insight into the compositional heterogeneity of alginates.
Fmc Biopolymer As | Date: 2013-06-28
Kits and compositions for producing an alginate gel are disclosed. The kits and compositions comprise soluble alginate and insoluble alginate/gelling ion particles. Methods for dispensing a self-gelling alginate dispersion are disclosed. The methods comprise forming a dispersion of insoluble alginate/gelling ion particles in a solution containing soluble alginate, and dispensing the dispersion whereby the dispersion forms an alginate gel matrix. The methods may include dispensing the dispersion into the body of an individual. An alginate gel having a thickness of greater than 5 mm and a homogenous alginate matrix network and homogenous alginate gels free of one or more of: sulfates citrates, phosphates, lactatates, EDTA or lipids are disclosed. Implantable devices comprising a homogenous alginate gel coating are disclosed. Methods of improving the viability of pancreatic islets, or other cellular aggregates or tissue, following isolation and during storage and transport are disclosed.
FMC Biopolymer AS | Date: 2010-09-16
An oral, immunostimulating material for mammals, birds, fish, and reptiles comprising an immunostimulating amount of an alginate having a M content of at least 40% and an acceptable carriers.