Navigation Links
Plastic fantastic - the future of biodegradables
Date:10/16/2011

Poly-3-hydroxybutyrate (PHB) is a thermoplastic polyester which occurs naturally in bacteria as Ralstonia eutropha and Bacillus megaterium. Even though PHB is biodegradable and is not dependent on fossil resources, this bioplastic has been traditionally too expensive to produce to replace petroleum-based plastics. New research reported in BioMed Central's open access journal Microbial Cell Factories describes an alternative method of producing PHB in microalgae.

PHB is synthesised in bacteria from acetyl-CoA using the enzymes -ketothiolase, acetoacetyl-CoA reductase and PHB synthase. The genes coding for these proteins were inserted into a diatom (Phaeodactylum tricornutum) resulting in expression of the enzymes and synthesis of PHB in cytosolic granules. After only seven days, about 10% of the dried weight of the diatoms was PHB.

Dr. Franziska Hempel and Prof Uwe Maier from the LOEWE-Centre Synmikro in Marburg, and Prof Alexander Steinbchel from Westflische Wilhelms-Universitt, explained, "Millions of tons of petroleum-based plastic are consumed every year worldwide causing immense amounts of waste that can take thousands of years to biodegrade if at all. Bacterial fermentation is expensive and while people have introduced a similar system into plants, plants are relatively slow growing and biofuel agriculture uses up valuable land. P. tricornutum needs little more than light and water to grow and can produce similar amounts of PHB to the plant systems in weeks rather than months."

In the quest to find biodegradable and renewable sources of plastics these photosynthetic bioreactors may well provide an answer.


'/>"/>
Contact: Dr Hilary Glover
hilary.glover@biomedcentral.com
44-020-319-22370
BioMed Central
Source:Eurekalert

Page: 1

Related biology news :

1. 6 environmental research studies reveal critical health risks from plastic
2. Astrocytes and synaptic plasticity
3. Plastic and reconstructive surgery -- in brief
4. Green plastics could help reduce carbon footprint
5. Stanford researchers develop biodegradable substitutes for wood, plastic bottles and other materials
6. Hormone-mimics in plastic water bottles -- just the tip of the iceberg?
7. Plastic that grows on trees, part two
8. Protein linked to mental retardation controls synapse maturation, plasticity, CSHL team finds
9. Plastics chemical retards growth, function of adult reproductive cells
10. Toward safer plastics that lock in potentially harmful plasticizers
11. Dining out in an ocean of plastic: How foraging albatrosses put plastic on the menu
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/7/2016)... June 7, 2016  Syngrafii Inc. and San ... relationship that includes integrating Syngrafii,s patented LongPen™ eSignature ... This collaboration will result in greater convenience for ... union, while maintaining existing document workflow and compliance ... ...
(Date:6/2/2016)... The Department of Transport Management (DOTM) ... million US Dollar project, for the , Supply ... Enrolment, and IT Infrastructure , to ... implementation of Identity Management Solutions. Numerous renowned international vendors participated ... was selected for the most compliant and innovative ...
(Date:6/2/2016)... Perimeter Surveillance & Detection Systems, Biometrics & ... & Other Service  The latest report from ... of the global Border Security market . Visiongain ... billion in 2016. Now: In November 2015 ... and hardware technologies for advanced video surveillance. ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... ... medical technologies, services and solutions to the healthcare market. The company's primary focus ... distribution, manufacturing, sales and marketing strategies that are necessary to help companies efficiently ...
(Date:6/27/2016)... 27, 2016  Liquid Biotech USA ... of a Sponsored Research Agreement with The University ... (CTCs) from cancer patients.  The funding will be ... correlate with clinical outcomes in cancer patients undergoing ... then be employed to support the design of ...
(Date:6/24/2016)... discussions on a range of subjects including policies, debt and ... Poloz. Speaking at a lecture to the Canadian ... to the country,s inflation target, which is set by both ... "In certain areas there needs to be ... why not sit down and address strategy together?" ...
(Date:6/24/2016)... ... June 24, 2016 , ... While the majority of commercial spectrophotometers and fluorometers ... the 6000i models are higher end machines that use the more unconventional z-dimension of ... beam from the bottom of the cuvette holder. , FireflySci has developed several ...
Breaking Biology Technology: