Navigation Links
Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

rgo additional treatment using hydrogen peroxide in order to yield paper for printed and writing.

P. cinnabarinus naturally sythesizes only small amounts of laccase when it grows on bagasse. It is necessary to add volatile agents such as ethanol, in order to increase production of the enzyme under these conditions. Ethanol was chosen as a laccase-inducer in this study because of its abundance, its low toxicity and low production cost. The research team moreover showed that if it was put into the system by forced convection at a rate of 7 g of ethanol per m3 (concentration equivalent to 3° of alcohol in the liquid phase), laccase production increased, to a maximum level (90 U per g of dry bagasse support). This amounts to 45 times the yield obtained without ethanol. Moreover, it appeared that little or no ethanol introduced was consumed by the fungus which preferentially uses other sources of carbon, resulting from the bagasse (saccharose) or put in with the substrate (maltose, yeast extracts and so on). It can therefore be recycled in the system or eliminated in a second system associated with it.

Replication of the fermentation trials at a larger scale, in an 18 litre bioreactor, confirmed the efficiency of the laccase production obtained using bagasse and ethanol (90 000 U per kg of dry bagasse after 30 days, representing the quantity needed for processing, without input of fungus, an extra 4 kg of bagasse). This bioprocess resulted in a 50% saving in energy consumption required for paper pulp refining, compared with that recorded for refining pulp from bagasse that had not been biologically treated. Another benefit came in the form of a 35% improvement in the paper's mechanical characteristics (tensile strength and tear resistance) without appreciable loss of material.

The results as a whole emphasize the potential for applications of this bioprocess in the paper industry. Retrieval of the laccase at the end of the cycle, after washi
'"/>

Source:Institut de Recherche Pour le D茅veloppement


Page: 1 2 3

Related biology news :

1. Active Vaccine Prevents Mice From Developing Prion Disease
2. First production of human monoclonal antibodies in chicken eggs published in Nature Biotechnology
3. Biotechnologys newest chemical tool
4. Biotechnologys newest chemical tool
5. Open Source Biotechnology alliance for international agriculture
6. Researchers develop assay that could be applied to drug screening
7. Rewind, please: Nature paper shows that cell division is reversible
8. UCLA paper examines how one disease may prevent another
9. Recycled paper and compost could both be key tools to control plant disease
10. McBride shows DNA detective work with paper-eating bacteria that glide
11. Scaled-down genome may power up E. colis ability in lab, industry
Post Your Comments:
(Date:7/24/2014)... Angeles, where electric cars ply silent freeways, solar panels ... beneath the earth, from howling winds and from the ... that it is technically and economically feasible to convert ... renewable energy. Published in Energy , the plan ... energy supply in California that could create tens of ...
(Date:7/24/2014)... 24, 2014 Some sticky research out of York ... a certain species of toxic grass fungus: moose saliva ... Biology Letters , "Ungulate saliva inhibits a grassendophyte ... to red fescue grass (which hosts a fungus called ... slower fungus growth and less toxicity. , "Plants have ...
(Date:7/24/2014)... of researchers has developed a new nanoscale agent for ... for assessing the function and properties of the GI ... and treatment of gut diseases. , Illnesses ... and inflammatory bowel disease all occur in the intestine ... with diseases such as diabetes and Parkinson,s. , ...
Breaking Biology News(10 mins):Stanford study shows how to power California with wind, water and sun 2Stanford study shows how to power California with wind, water and sun 3Stanford study shows how to power California with wind, water and sun 4Moose drool inhibits growth of toxic fungus: York U research 2New imaging agent provides better picture of the gut 2
... Inc., today announced that its 12,200 Online Books ... of HINARI, AGORA and OARE, benefitting research and ... including Malawi, Cambodia, and Bolivia. Research4Life provides ... low cost access to peer-reviewed online content from ...
... /PRNewswire-iReach/ -- Successful businesses stay connected to the ... with industry leaders at global biotech conferences with ... go to learn about new innovations, how to ... and risks while overcoming regulatory and technological hurdles. ...
... by English naturalist Charles Darwin on the Galapagos Islands, ... as isolation on a particular island, can lead to ... natural selection. Natural selection is a process whereby ... successive generations, while unfavorable heritable traits become less common. ...
Cached Biology News:Over 12,000 Wiley Online Books made available in developing countries via Research4Life 2Early Bird Conference Registrations Expiring This Friday 2Early Bird Conference Registrations Expiring This Friday 3Early Bird Conference Registrations Expiring This Friday 4LSU professor discovers how new corals species form in the ocean 2LSU professor discovers how new corals species form in the ocean 3
(Date:7/24/2014)... 2014 Gain recognition for leadership ... of the biotech industry. Nominations are now being ... to you by the Bio Supply Management ... chain management professionals for the past 7 years. ... the Biotech industry – Manufacturers, Service Providers, Material ...
(Date:7/24/2014)... , July 24, 2014  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, announced today that ... presentation to investors on Tuesday, July 29, 2014, ... presentation will include an overview of Asterias, business ... webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics at least 15 ...
(Date:7/24/2014)... trained personnel, and detection dogs to safeguard airports ... revolutionary new electronic chip with nano-sized chemical sensors ... , The groundbreaking nanotechnology-inspired sensor, devised by Prof. ... of Chemistry and Center for Nanoscience and Nanotechnology, ... up the scent of explosives molecules better than ...
(Date:7/24/2014)... scientists are making progress in devising suitable means ... relies on quantum dotsa kind of artificial atom, ... new study demonstrates that changing the coupling of ... impulses can help better control them. This has ... quantum information units, which would produce faster quantum ...
Breaking Biology Technology:Call for Submission: BSMA’s Supply Chain Management Innovation Awards 2Call for Submission: BSMA’s Supply Chain Management Innovation Awards 3Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4Nano-sized chip 'sniffs out' explosives far better than trained dogs 2
... Remove >90% of mammalian RNA from , ... Simple procedure takes less than 2 hours , ... Seamless integration with , MICROB Express ... microarray expression analysis with , bacterial RNA isolated from host cells ...
... , , ... methods to isolate high quality RNA from a large number of ... the RNAqueous-96 , Kit . This kit, which ... of intact RNA in a 96-well plate format. An optional on-the-filter , ...
... Amplification Kits-- Now Available with Cy Dyes , ... Extremely sensitive , ArrayScript Reverse , ... yields , ... 4000-fold amplification of mRNA , Optimized buffers--high dye coupling efficiency , ...
Cached Biology Technology:Bacterial RNA Isolation From Infected Eukaryotic Hosts 2Bacterial RNA Isolation From Infected Eukaryotic Hosts 3Bacterial RNA Isolation From Infected Eukaryotic Hosts 4Bacterial RNA Isolation From Infected Eukaryotic Hosts 5Bacterial RNA Isolation From Infected Eukaryotic Hosts 6Automating RNA Isolation 2Automating RNA Isolation 3Automating RNA Isolation 4Automating RNA Isolation 5aRNA Synthesis and Labeling for Array Analysis 2aRNA Synthesis and Labeling for Array Analysis 3aRNA Synthesis and Labeling for Array Analysis 4aRNA Synthesis and Labeling for Array Analysis 5
Request Info...
See product name for description....
... Amino acid mixture excluding l-[U-14C]methionine, ... containing 2% ethanol, sterilized. > ... mCi/mg atom carbon. Mixture of ... Ile, Leu, Lys, Phe, Pro, Ser, ...
Request Info...
Biology Products: