Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New methods increases food and bioenergy production from cassava

24.09.2013
New ways to utilize starch from cassava can provide food to an additional 30 million people without taking more arable land than today.

By 2030 the figure will be 100 million. In addition, the same land can also contribute to an increased production of bioenergy. This is shown in a new study from researchers at the Swedish University of Agricultural Sciences (SLU) and China Agricultural University (CAU).

Cassava or manioc (Manihot esculenta Crantz.) is grown for its high starch content. The large tubers are very starchy and processed into flour or semolina (tapioca). This is the staple food for between 0.5-1 billion people in Africa, Latin America and Asia. The plant is grown on about 19 million hectares of land.

There are also strong interests to increase the use of cassava starch for industrial use. This can reduce the amount of food or result in even more land being utilized for production.

Researchers at SLU and CAU have found that discarded stems contain surprisingly large amounts of starch, up to 30% of dry mass. In today's production the stems are removed from plantations and are considered a waste problem.

With simple water-based technologies, up to 15% of starch stem dry weight can be extracted. If this starch can be used for industrial purposes, root starch previously used industrially can provide food for an additional 30 million people in the world today and close to 100 million in 2030.

The study also shows that residues and process for the extraction of stem starch can be used for the production of biofuels (solid fuel and biogas) and provide substantial added values. Without land use increases, the researchers show that food and bioenergy in combination can contribute to sustainable development and to combat malnutrition and poverty globally.

- There is great potential with the new ideas about using cassava stems as an industrial commodity, rather than as today a waste problem. We were actually surprised to find such large amounts of nutritious starch in a biomass residue, mostly stored in xylem tissues of the stems, says Associate Professor Shaojun Xiong, who is leading the research in this field.

The study is published in the latest issue of the prestigious journal Global Change Biology Bioenergy. The project was conducted in cooperation between SLU and the China Agricultural University and supported by the EU - China Energy and Environmental Applications, Swedish Energy Agency, Swedish Royal Academy of Engineering Sciences and the project Bio4Energy. CAU self-funded its share of the work.

The following have participated in the project and contributed to the article:
Shaojun Xiong, associate professor, Department of forest biomaterials and Technology (SBT), SLU.
Torbjörn Lestander, Associate Professor, SBT.
Björn Hedman, PhD, SBT.
Håkan Örberg, Research assistant SBT.
Maogui Wei, visiting researcher, SBT
Wanbin Zhu, PhD, university lecturer, China Agricultural University (CAU), and former post doc at SBT
Xie Guanghui, professor, CAU
Jiwei Ren, PhD candidate, CAU
Read the article here :
http://onlinelibrary.wiley.com/doi/10.1111/gcbb.12112/pdf Opens in new window
Contacts:
Shaojun Xiong, Associate Professor
+46 70-5833888
shaojun.xiong@slu.se
Torbjörn Lestander, Associate Professor
+46 70-6640406
torbjorn.lestander@slu.se
Published by: olof.bergvall@slu.se

Olof Bergvall | idw
Further information:
http://www.slu.se
http://onlinelibrary.wiley.com/doi/10.1111/gcbb.12112/pdf

More articles from Life Sciences:

nachricht Bare bones: Making bones transparent
27.04.2017 | California Institute of Technology

nachricht Link Discovered between Immune System, Brain Structure and Memory
26.04.2017 | Universität Basel

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Bare bones: Making bones transparent

27.04.2017 | Life Sciences

Study offers new theoretical approach to describing non-equilibrium phase transitions

27.04.2017 | Physics and Astronomy

From volcano's slope, NASA instrument looks sky high and to the future

27.04.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>