Corporate Banner
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Breeding potatoes with improved properties

Published: Tuesday, November 30, 2010
Last Updated: Tuesday, November 30, 2010
Bookmark and Share
It is possible to breed potatoes in such a way that they produce new types of starch for use as a new and improved plant-based raw material in the construction, paper, glue, fodder and food industries.

It is possible to breed potatoes in such a way that they produce new types of starch for use as a new and improved plant-based raw material in the construction, paper, glue, fodder and food industries. These results are described in Xingfeng Huang’s PhD thesis, which he will defend on 29 November 2010 to obtain his doctoral degree at Wageningen University. Using genetic modification, Huang managed to develop potatoes with larger starch granules, a higher capacity to retain water after several cycles of freeze/thaw (interesting, fro example, with frozen meals) and have a stronger capacity to form gels (useful when making sauces). The cells of potato tubers contain starch in the form of starch granules. The plant produces these granules because enzymes adhere to the outside of the granule, building up the starch granule. The enzymes adhere to the granules because a specific part of the enzyme, the so-called Starch Binding Domain, is able to recognise starch. Enzyme cooperation The way the granule is built up depends on the activity of the rest of the enzyme. The cooperation between the enzymes involved in starch biosynthesis affects the shape and size of the starch granules, as well as other starch properties such as the ability to ‘bind’ water, as required when making sauces and soups. There are bacteria that contain enzymes involved in the breakdown of starch and these enzymes also have a Starch Binding Domain. They often have a slightly different function than the enzymes already present in the potato. If potatoes were able to produce these enzymes, it would probably result in starch granules with new characteristics. This could make the potato an even better source for plant-based raw materials; materials that are sustainably produced in plants. New starch via new enzymes Via genetic modification, Huang introduced genes in the potato which code for proteins that combine a Starch Binding Domain with different bacterial enzymes involved in starch modification. Huang discovered that the new ‘fusion enzymes’ often caused the potato plants to produce starch granules with an entirely different appearance than the granules usually found in potato cells. When Huang used the gene for the amylosucrase enzyme of the Neisseria polysaccharea bacteria, it also changed other important characteristics of the starch granules. The granules were on average twice as large, for instance, and the starch was more capable of ‘binding’ fluids. This means that smaller amounts of starch can produce the same viscosity in, for example, sauces and desserts. It was also shown that the new starch granules were better at retaining water, which is highly relevant to frozen food products. When the starch in these products discharges too much water, they can often no longer be used once they have been defrosted. Huang’s research shows that it is indeed possible to develop potatoes that produce new, better sustainable raw materials. Potato starch is already being used in the construction paper, glue, fodder and food industries. New types of starch could benefit these and other possible applications.


Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,500+ scientific posters on ePosters
  • More Than 3,700+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

First South American Plant for Purifying Soils Contaminated with Zinc and Cadmium
Gomphrena claussenii easily grows on contaminated soil near zinc mines and takes up large amounts of heavy metals.
Wednesday, July 03, 2013
Large-Scale Edible Insect Farming Needed to Ensure Global Food Security
Scientists tackle problems of feeding the ever-increasing global population and providing them with enough animal protein.
Friday, May 10, 2013
Organic Chickens Express More Cholesterol Gene
Study reveals that organic chickens have higher expressed genes involved in the creation of cholesterol,
Friday, January 22, 2010
Scientific News
The Changing Tides of the In Vitro Diagnostics Market
With the increasing focus in personalized medicine, diagnostics plays a crucial role in patient monitoring.
LaVision BioTec Reports on the Neuro Research on the Human Brain After Trauma
Company reports on the work of Dr Ali Ertürk from the Institute for Stroke and Dementia Research at LMU Munich.
NIH Study Shows No Benefit of Omega-3 Supplements for Cognitive Decline
Research was published in the Journal of the American Medical Association.
Less May Be More in Slowing Cholera Epidemics
Mathematical model shows more cases may be prevented and more lives saved when using one dose of cholera vaccine instead of recommended two doses.
Investigating the Vape
Expert independent review concludes that e-cigarettes have potential to help smokers quit.
NIH Launches Human RSV Study
Study aims to understand infection in healthy adults to aid development of RSV medicines, vaccines.
Researchers Discover Synthesis of a New Nanomaterial
Interdisciplinary team creates biocomposite for first time using physiological conditions.
Poor Survival Rates in Leukemia Linked to Persistent Genetic Mutations
For patients with an often-deadly form of leukemia, new research suggests that lingering cancer-related mutations – detected after initial treatment with chemotherapy – are associated with an increased risk of relapse and poor survival.
Flu Remedies Help Combat E. coli Bacteria
Physiologists from the University of Zurich have now discovered why the intestinal bacterium Escherichia coli (E. coli) multiplies heavily and has an inflammatory effect.
Marijuana Genome Unraveled
A study by Canadian researchers is providing a clearer picture of the evolutionary history and genetic organization of cannabis, a step that could have agricultural, medical and legal implications for this valuable crop.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
3,700+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FREE!