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KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2014 (English)In: PAPERS OF THE 22ND EUROPEAN BIOMASS CONFERENCE: SETTING THE COURSE FOR A BIOBASED ECONOMY, 2014, 1116-1123 p.Conference paper (Refereed)
Abstract [en]

Tunicates, a group of marine animals, is gaining a lot of interests in case of medical, food market, water pollution, cellulosic nanomaterial, and biofuel production issues due to their consisting of chemical compounds such as cellulose, amino-sugars, and proteins or protein-polysaccharide complexes. In this work, two dominant species of Scandinavian tunicates have been investigated by extraction and characterization of their cellulose, and amino acids. Samples in different sizes, ages, place of growing (Distance to ocean's surface), and different chemical pretreatment, have been evaluated in their compositions to see the best conditions for extraction of cellulose and protein. For pure cellulose and bioethanol productions, the samples growing near to the ocean surface at the best harvesting time (after completion of metamorphosis), recommended to be explored. The highest amount of protein in tunicate body has been found in the internal organs with a total amino acid content of around 52 %. In addition, the larger and elder the sample is, the higher amount of protein it contains. Hence, for feed supplementing point of view, the internal organs of tunicates with higher size and age are favored to be considered. Eventually, a combination of both H3PO4 and Ba (OH)(2) might lead to a significantly high cellulose percentage (66.5%) and a high protein removal percentage (protein content of 6%) when aiming at cellulose extraction.

Place, publisher, year, edition, pages
2014. 1116-1123 p.
Keyword [en]
tunicate, cellulosic nanomaterial, amino sugars, protein-polysaccharide, bioethanol
National Category
Chemical Engineering Bioenergy Energy Systems
URN: urn:nbn:se:kth:diva-165255ISI: 000351053500195OAI: diva2:809535
22nd European International Biomass Conference - Setting the Course for a Biobased Economy, JUN 23-26, 2014, Hamburg, GERMANY

QC 20150504

Available from: 2015-05-04 Created: 2015-04-24 Last updated: 2015-05-04Bibliographically approved

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Hassanzadeh, MasoumehLi, Jiebing
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