Navigation Links
Biodiesel algae: Starvation diets damage health

It may be better to tolerate lower oil content in algae grown for biodiesel to boost growth and overall productivity, says research from the University of Sheffield.

The research shows that the commonly accepted method of depriving algae of key nutrients such as nitrogen in order to boost its oil content may be detrimental to overall oil yield in the long term.

"Total oil production depends not just on the oil content of the algal cells but how quickly the cells grow and multiply," says Dr Stephen Wilkinson of the University's Department of Chemical and Biological Engineering. "We found you get more oil production overall if you give the algae all nutrients they need to grow fast rather than trying to increase the oil in each cell by limiting the availability of nitrogen."

In a study funded by the Carbon Trust and US consulting engineering firm MWH Global, Dr Wilkinson, along with colleagues from the University of Manchester, examined a species of algae called Dunaliella salina at different cell densities grown at a range of temperatures to determine the rate of growth and lipid production.

Some samples were deprived of nitrogen, whilst others were allowed to grow naturally. During the course of the 4-week study the overall yield from the nitrogen starved crops was in fact lower than many of the crops that had been allowed to grow naturally.

Another key finding of the study was that productivity could also be increased by increasing cell density. The researchers used centrifugation to create more crowded algal cultures and were surprised to see that this these samples could still grow very well.

"Large-scale production of algal biofuels will need big ponds taking up a lot of space," says Dr Wilkinson, "so anything we can do to squeeze more oil out of a smaller land area is very important."

The study is published in the Journal of Chemical Technology and Biotechnology.


Contact: Beck Lockwood
University of Sheffield

Page: 1

Related biology news :

1. New uses for old tools could boost biodiesel output
2. Nutrient-sensing enzymes key to starvation response and survival in newborn mammals
3. Evidence contradicts idea that starvation caused saber-tooth cat extinction
4. Phosphorus starvation linked to symptoms of citrus disease Huanglongbing in new study
5. The effect of catch-up growth by various diets and resveratrol intervention on bone status
6. New study compares diets for weight management in obese children
7. Researchers find potential dark side to diets high in beta-carotene
8. Pasta made from green banana flour a tasty alternative for gluten-free diets
9. Sugar-sweetened drinks are not replacing milk in kids diets
10. Diets high in salt could deplete calcium in the body: UAlberta research
11. Feces fossils yield new insights into ancient diets and thrifty genes
Post Your Comments:
(Date:5/24/2016)... care by providing unparalleled technology to leaders of the medical imaging industry.  As such, ... to the range of products distributed by Ampronix. Photo - ... ... ... With ...
(Date:5/12/2016)... 12, 2016 , a brand ... overview results from the Q1 wave of its quarterly ... was consumers, receptivity to a program where they would ... health insurance company. "We were surprised to ... Michael LaColla , CEO of Troubadour Research, "primarily ...
(Date:4/28/2016)... and BANGALORE, India , April 28, 2016 ... a product subsidiary of Infosys (NYSE: INFY ), ... a global partnership that will provide end customers ... mobile banking and payment services.      (Logo: ... innovation area for financial services, but it also plays a ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... , June 27, 2016  Global demand for ... percent through 2020 to $7.2 billion.  This market ... beverages, cleaning products, biofuel production, animal feed, and ... diagnostics, and biocatalysts). Food and beverages will remain ... by increasing consumption of products containing enzymes in ...
(Date:6/27/2016)... ... June 27, 2016 , ... Cancer experts from Austria, Hungary, ... be a new and helpful biomarker for malignant pleural mesothelioma. Surviving Mesothelioma has ... it now. , Biomarkers are components in the blood, tissue or body ...
(Date:6/27/2016)... ... June 27, 2016 , ... Rolf K. ... the faculty of the University of North Carolina Kenan-Flagler Business School ... entrepreneurship at UNC Kenan-Flagler, with a focus on the school’s international efforts, leading ...
(Date:6/24/2016)... on a range of subjects including policies, debt and investment ... Speaking at a lecture to the Canadian Economics ... the country,s inflation target, which is set by both the ... "In certain areas there needs to be frequent ... not sit down and address strategy together?" He ...
Breaking Biology Technology: