Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Extracting bioactive compounds from marine microalgae

29.12.2014

Microalgae can produce high value health compounds like omega-3s , traditionally sourced from fish. With declining fish stocks, an alternative source is imperative. Published in the Pertanika Journal of Tropical Agricultural Science, researchers evaluated various methods for extracting fatty acids and carotenoids from two microalgae species.

Microalgae are photosynthetic microorganisms that produce high value compounds considered essential for human health, including polyunsatured fatty acids (e.g., omega-3s like EPA and DHA), various pigments (chlorophyll and carotenoids), and vitamins. Although fish have traditionally been our principal dietary source of EPA and DHA, declining marine fish stocks, the unpleasant odour of fish oil, and other disadvantages, have prompted a search for alternative sources of these nutrients.


Fish oil has high levels of omega-3s but with declining fish stocks, it is imperative to find alternative sources

Copyright : Wikimedia


Nannochloropsis sp. microalgae viewed under a light microscope.

Copyright : Photo taken at Wageningen University by Inks002 / Wikimedia Commons

In a study, published in the Pertanika Journal of Tropical Agricultural Science, S. P. Loh and S. Lee of the Universiti Putra Malaysia evaluated various methods for extracting fatty acids and carotenoids from two microalgae species: Chaetoceros gracillis, a diatom, and Nannochloropsis occulata, a unicellular green alga. Both species play an important role in the food chain, while N. occulata is also widely cultivated for fish hatcheries and shrimp farms.

No standard extraction methods currently exist for determining the fatty acid or carotenoid content of microalgae. Therefore, the researchers selected different extraction methods based on these criteria: maximum extraction efficiency, ease of handling, and use of solvents of low toxicity.

Overall, the study found that high amounts of fatty acids and carotenoids could be obtained from both microalgae. However, for both fatty acid and carotenoid extration, one extraction method was superior in N. occulata while another method yielded the best results in C. gracillis.

The researchers also found that N. occulata had higher amounts of the omega-3 fatty acid EPA, while C. gracillis was particularly high in palmitic acid and palmitoleic acid levels. In addition, there were significantly higher carotenoid levels in N. occulata compared to C. gracillis.

For more information about this research, please contact:
S. P. Loh
Department of Nutrition and Dietetics
Faculty of Medicine and Health Sciences
Universiti Putra Malaysia
3400 Serdang, Selangor, Malaysia
Email: sploh@upm.edu.my
Tel: +(603) 8947 2432; Mobile: +(6012) 391 2654.

About Pertanika Journal of Tropical Agricultural Science (JTAS)
Pertanika Journal of Tropical Agricultural Science (JTAS) is published by Universiti Putra Malaysia in English and is open to authors around the world regardless of nationality. The journal is published four times a year in February, May, August and November. Other Pertanika series include Pertanika Journal of Science & Technology (JST), and Pertanika Journal of Social Sciences & Humanities (JSSH).

JTAS aims to provide a forum for high quality research related to tropical agricultural research. Areas relevant to the scope of the journal include: agricultural biotechnology, biochemistry, biology, ecology, fisheries, forestry, food sciences, entomology, genetics, microbiology, pathology and management, physiology, plant and animal sciences, production of plants and animals of economic importance, and veterinary medicine. The journal publishes original academic articles dealing with research on issues of worldwide relevance.


For more information about the journal, contact:

The Chief Executive Editor (UPM Journals)
Head, Journal Division, UPM Press
Office of the Deputy Vice Chancellor (R&I)
IDEA Tower 2, UPM-MDTC Technology Centre
Universiti Putra Malaysia
43400 Serdang, Selangor
Malaysia.
Phone: +(603) 8947 1622 | +(6016) 217 4050
Email: nayan@upm.my

Acknowledgements
The Chief Executive Editor, UPM Journals

Associated links
Link to research paper
Pertanika Journals

Dr Nayan KANWAL, FRSA, ABIM, AMIS, Ph.D. | ResearchSEA
Further information:
http://www.researchsea.com

More articles from Agricultural and Forestry Science:

nachricht How much drought can a forest take?
20.01.2017 | University of California - Davis

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>