Second scientific meeting COST action Bioadhesives May 2011 Mons, BE
Dr. Nieves Gonzalez Ramon May 2011
Bio-adhesives from microalgae Current microalgae applications Microalgae in nutrition Microalgae high value products
Constraints to further development Economy/competitiveness of whole process
Benefits of novel microlgae products Replacing non renewable AND artificial sources
Promising new products Microalgae extracted bio-adhesives
Microalgae in human nutrition
1) Feeding rotifers -> to feed fish
2) Direct fish feeding is possible for certain species (tilapia, carp, catfish)
Eicosapentaenoic Acid from Nannochloropsis
PATENTED EXTRACTION PROCESS. WO2010039030. POSSIBLE from WET ALGAE PASTE LOW TOXICITY SOLVENTS HIGH SOLVENT RECOVERY & REUSE:>98%
EICOSAPENTAENOIC ACID in EXTRACT >30%
FATTY ACID ethyl ester % C14:0 Myristic acid 0,68% C16:0 Palmitic acid 17,08 % C16:1 Palmitoleic acid 14,30 % C18:1 n-9 Oleic acid 20,51 % C20:4 n-6 Arachidonic acid 5,79 % C20:5 n-3 Eicosapentaenoic 36,70 % Others 4,95% TOTAL 100%
Antioxidants from Nannochloropsis gaditana 1: Fucoxanthin/Pheophytin. Rf=0,56 2: Chlorophyll b. Rf=0,34 3: Lutein. Rf=0,28 4: Violaxanthin. Rf=0,20 5: Neoxanthin. Rf=0,08
Antioxidants from microalgae
Astaxanthin rich oil from Haematococcus pluvialis
The ‘liquid gold’ is currently sold >250 Euro/Kg (Cyanotech) Estimated reduction of costs with Feyecon process -> 1/10
EXTRACTION POSSIBLE from WET ALGAE PASTE.
LOW TOXICITY SOLVENTS and HIGH SOLVENT RECOVERY & REUSE:>98%
ASTAXANTHIN in EXTRACT >5%
Constraints to further development Economy/competitiveness of whole process
Benefits of novel microlgae products Replacing non renewable AND artificial sources
Promising new products Microalgae extracted bio-adhesives
FeyeCon
10 Ton DW
28.9 €/kg DW
Constraints to further development Economy/competitiveness of whole process
Benefits of novel microlgae products Replacing non renewable AND artificial sources
Promising new products Microalgae extracted bio-adhesives
FeyeCon
HOW? Growing algae in non arable land
WHY? Depletion of fosil resources as oil
FOR WHAT? For human & animal food, high value ingredients and industrial commodities
FeyeCon
Constraints to further development Economy/competitiveness of whole process
Benefits of novel microlgae products Replacing non renewable AND artificial sources
Promising new products Microalgae extracted bio-adhesives
Bio-adhesives from microalgae (4)
Diatom cells under scanning electron microscopy (SEM)
Left: the raphe through which the cell secretes adhesive EPS (Navicula sp). Right: P. viridis attaching to glass substratum via adhesive mucilage secretions.
Source: Molino and Wetherbee, 2008
FeyeCon
Extraction of lipidic fraction from microalgae
Separation of polypeptide+polysaccharide fraction
Bioadhesive product
FeyeCon
Nannochloropsis gaditana extracts 1: Material does not hold a tooth stick 2: Material holds a tooth stick 3 and 4: Materials hold a tooth stick but had brittle characteristics
Bioadhesive materials from microalgae
Spirulina platensis extracts
Left: Material does not hold a tooth stick Righ: Material holds a tooth stick
Bioadhesive materials from microalgae
Be aware of production costs
When this done then: - make high value targets first - do not neglect mid value and by-products - explore niche species -> 80K species are identified
FUTURE OUTLOOK
Bio-adhesives from microalgae (5)
CleanAlgae S.A. (SP) www.cleanalgae.es
Technical University Delft (NL) www.tudelft.nl
Wageningen University (NL) www.wageningenuniversity.nl
International team
-Mr. Andreas Weber (D) -Mr. Yannick Weesepoel (NL) -Dr. Zuo Peng Qu (CN) -Dr. Martijn van der Kraan (NL) -Dr. Andreas Metlen (BE) -Ms. Cristina Lopez Gonzalez (SP) -Dr Audrey Ngomsik (FR) -Dr. Nieves Gonzalez Ramon (SP)
FeyeCon
May 2011