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

The principal raw material used for manufacturing paper pulp is wood. However, growing demand in the paper industry, at a time of dwindling forest resources, have compelled the sector to turn to other sources of raw materials, such as cereal straw, reeds, bamboo or sugar-cane bagasse.

This residue, obtained after crushing of the cane, is already used as a source of paper-making fibres in producer countries (in South America and India for example, where it represents 20 % of the paper production). The industry absorbs 10% of the world bagasse production. This material offers several advantages: rapid growth of the sugar-cane plant, widespread cultivation, lower energy and bleaching chemical requirements for bagasse refining. Such a process is also a convenient means of usefully clearing this voluminous sugar refinery waste product: indeed, one tonne of refined sugar results in two tonnes of bagasse. However, whatever the raw material used, paper pulp has to undergo processing stages of delignification and bleaching to turn it into high-strength and durable paper. In some countries the chemical processing involved still entail the use of chlorine, dangerous for both health and the environment.

Research scientists from the IRD and INRA studied an alternative, biologically based, solution. Laboratory experimentation enabled them to develop a non-polluting process, which at the same time yields a delignifying enzyme, laccase, from a culture of a filamentous fungus and effectively recycles the sugar-cane bagasse. Its principle lies in the specific metabolic characteristics of this fungus, Pycnoporus cinnabarinus, which produces laccase naturally. This enzyme breaks down the lignin in the fibres of bagasse used as substrate in these trials, transforming this waste product, after mechanical refining, into paper pulp. As the lignin progressively disappears, the pulp obtained becomes bleached. This pulp can be used as it is to make cardboard, but it must unde
'"/>

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:9/30/2014)... and engineers, led by Clemson University associate professor ... grant from the U.S. Department of Energy,s Experimental ... direct positive impact on South Carolina in the ... contaminants. , "Understanding the scientific and engineering needs ... of nuclear technologies is imperative if South Carolina ...
(Date:9/30/2014)... runoff in Hawaii is causing tumors in endangered sea ... published Tuesday in the peer-reviewed open-access journal PeerJ ... in algae that the turtles eat, promoting the formation ... organs. , Scientists at Duke University, the University of ... conducted the study to better understand the causes ...
(Date:9/30/2014)... in German . ... to risky situations such as exposure to predators. Researchers ... in a long-term study on different populations of great ... and ambient temperature. High metabolic rates and low temperatures ... scenarios birds were more likely to approach potential predators. ...
Breaking Biology News(10 mins):Researchers get $5.25 million to advance nuclear technologies in South Carolina 2Pollution linked to lethal sea turtle tumors 2Pollution linked to lethal sea turtle tumors 3Risky metabolism 2
... OAK RIDGE, Tenn., Sept. 15, 2010 -- New insight ... discussions that could result in more efficient methods to ... of Energy,s Oak Ridge National Laboratory and Georgia Tech ... of an acid pretreatment of lignocellulose from switchgrass. Pretreatment ...
... Recent puzzling observations of tiny variations in nuclear ... of using decay rates to determine the relative ages ... Institute of Standards and Technology (NIST), working with researchers ... National Laboratory and Wabash College, tested the hypothesis that ...
... TexasDr. Z. Jeffrey Chen and his colleagues will use next-generation ... in cotton, the largest source of natural and renewable fiber ... National Science Foundation (NSF). One of the goals of ... Cotton is a multibillion-dollar crop in the U.S. and one ...
Cached Biology News:Neutrons helping ORNL researchers unlock secrets to cheaper ethanol 2Research shows radiometric dating still reliable (again) 2Improving cotton the goal of $3.8 million grant to University of Texas at Austin plant geneticist 2
(Date:10/1/2014)... Today the National Institutes of ... for the Brain Research through Advancing Innovative Neurotechnologies ... and revolutionize new methods of understanding the complexities ... This first round of grants totaling $46 million ... to more than 100 investigators in 15 states ...
(Date:10/1/2014)... 01, 2014 Slone Partners , ... Healthcare IT, and Laboratory Testing industries, reported a 120% ... the director level and above from July 2013 to ... on top of rapid breakthroughs in diagnostics, reimbursement has ... companies have been forced to fold, consolidate, or carry ...
(Date:10/1/2014)... 1, 2014 Industry leaders ... to engage around the theme, ,Commercial Opportunities in the ...   Elsevier , a world-leading provider ... will host a gathering of some of the industry,s ... impacting healthcare today and in the future. The ...
(Date:9/30/2014)... Mass. Using a bio-mimicking analog of one ... grass, an international research team led by Alejandro ... taken a major step in developing long-sought polymer ... electricity for use in electronic devices. , ... Amherst and others at Stanford University and Dresden ...
Breaking Biology Technology:NIH Awards 15 Grants to CHI Members for BRAIN Initiative Research 2NIH Awards 15 Grants to CHI Members for BRAIN Initiative Research 3Slone Partners Meets Growing Demand as Industry Focuses on Reimbursement & Regulation 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 3Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3
... LONDON, November 18 , - New ... - An Estimated Two Billion Work Hours Lost Each Week , ... time that,people between the ages of 40 to 65 are emerging as the ... the,report uncovers a new, younger majority of COPD patients(1) who are in the,prime ...
... ... at the 9th DIA Conference for Contemporary Pharmacovigilance and Risk Management Strategies, which takes place ... of the Integrated Summary of Safety. , ... Emeryville, CA (PRWEB) November 18, 2009 -- BioSoteria, Inc., a drug safety service ...
... Then it was the cylindrically shaped nanotubes. Now, the ... a remarkably flat molecule made of carbon atoms ... Not only is this the thinnest material ... steel and it conducts electricity better than any other ...
Cached Biology Technology:Mainstay of the Global Workforce - 40-65 Year Olds - Hit Hardest by Chronic Obstructive Pulmonary Disease (COPD) 2Mainstay of the Global Workforce - 40-65 Year Olds - Hit Hardest by Chronic Obstructive Pulmonary Disease (COPD) 3Mainstay of the Global Workforce - 40-65 Year Olds - Hit Hardest by Chronic Obstructive Pulmonary Disease (COPD) 4BioSoteria CEO to Present at Drug Safety Conference 2New study confirms exotic electric properties of graphene 2New study confirms exotic electric properties of graphene 3
Guanine nucleotide-binding protein G(k), alpha subunit...
Goat anti-VAV2 Class: Antibody Product Group: Miscellaneous Antibody...
... P7 D7 F5] to RYK ( ... Antigen: Synthetic ... to amino acids 462 - 475 ... Gene ID: 6259 ...
DAP12 Market Segment: Protein Kinases...
Biology Products: