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Title: Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same

Abstract

Compositions of matter are provided that include chitosan and a modified carbohydrate. The modified carbohydrate includes a carbohydrate component and a cross linking agent. The modified carbohydrate has increased carboxyl content as compared to an unmodified counterpart carbohydrate. A carboxyl group of the modified carbohydrate is covalently bonded with an amino group of chitosan. The compositions of matter provided herein may include cross linked starch citrate-chitosan and cross linked hemicellulose citrate-chitosan, including foams thereof. These compositions yield excellent absorbency and metal chelation properties. Methods of making cross linked modified carbohydrate-chitosan compounds are also provided.

Inventors:
; ; ;
Issue Date:
Research Org.:
North Carolina State Univ., Raleigh, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1172147
Patent Number(s):
8,975,387
Application Number:
13/052,463
Assignee:
North Carolina State University (Raleigh, NC)
DOE Contract Number:  
FG36-02GO12026
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Mar 21
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Venditti, Richard A, Pawlak, Joel J, Salam, Abdus, and El-Tahlawy, Khaled Fathy. Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same. United States: N. p., 2015. Web.
Venditti, Richard A, Pawlak, Joel J, Salam, Abdus, & El-Tahlawy, Khaled Fathy. Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same. United States.
Venditti, Richard A, Pawlak, Joel J, Salam, Abdus, and El-Tahlawy, Khaled Fathy. Tue . "Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same". United States. https://www.osti.gov/servlets/purl/1172147.
@article{osti_1172147,
title = {Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same},
author = {Venditti, Richard A and Pawlak, Joel J and Salam, Abdus and El-Tahlawy, Khaled Fathy},
abstractNote = {Compositions of matter are provided that include chitosan and a modified carbohydrate. The modified carbohydrate includes a carbohydrate component and a cross linking agent. The modified carbohydrate has increased carboxyl content as compared to an unmodified counterpart carbohydrate. A carboxyl group of the modified carbohydrate is covalently bonded with an amino group of chitosan. The compositions of matter provided herein may include cross linked starch citrate-chitosan and cross linked hemicellulose citrate-chitosan, including foams thereof. These compositions yield excellent absorbency and metal chelation properties. Methods of making cross linked modified carbohydrate-chitosan compounds are also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {3}
}

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C. The invention may also relate to release coatings and methods of making a silicon ingot or wafer including the use of a release coating.</div><div class="small clearfix text-muted" style="margin-top:15px;"> <div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink"><a class="misc fulltext-link" href="https://www.osti.gov/servlets/purl/1032965" title="Link to document media" target="_blank" rel="noopener" data-ostiid="1032965" data-product-type="Patent" data-product-subtype="">Full Text Available</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="3" /><div class="item-info"> <h2 class="title" itemprop="name headline"> <a href="/doepatents/biblio/1015153" itemprop="url">Composite catalysts supported on modified carbon substrates and methods of making the same</a> </h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Patent</small><span class="authors"> Popov, Branko N [Columbia, SC]; Subramanian, Nalini [Kennesaw, GA]; Colon-Mercado, Hector R [Columbia, SC]<span class="text-muted pubdata"></span> </span> </div> <div class="abstract">A method of producing a composite carbon catalyst is generally disclosed. The method includes oxidizing a carbon precursor (e.g., carbon black). Optionally, nitrogen functional groups can be added to the oxidized carbon precursor. Then, the oxidized carbon precursor is refluxed with a non-platinum transitional metal precursor in a solution. Finally, the solution is pyrolyzed at a temperature of at least about 500.degree. C.</div><div class="small clearfix text-muted" style="margin-top:15px;"> <div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink"><a class="misc fulltext-link" href="https://www.osti.gov/servlets/purl/1015153" title="Link to document media" target="_blank" rel="noopener" data-ostiid="1015153" data-product-type="Patent" data-product-subtype="">Full Text Available</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> <li> <div class="article item document" itemprop="itemListElement" itemscope itemtype="http://schema.org/WebPage"><meta itemprop="position" content="4" /><div class="item-info"> <h2 class="title" itemprop="name headline"> <a href="/doepatents/biblio/958677" itemprop="url">Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same</a> </h2> <div class="metadata"> <small class="text-muted" style="text-transform:uppercase;display:block;line-height:2.5em;">Patent</small><span class="authors"> Wetzel, Kyle Kristopher [Lawrence, KS]<span class="text-muted pubdata"></span> </span> </div> <div class="abstract">A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.</div><div class="small clearfix text-muted" style="margin-top:15px;"> <div class="pure-menu pure-menu-horizontal pull-right" style="width:unset;"> <ul class="pure-menu-list"> <li class="pure-menu-item"><span class="item-info-ftlink"><a class="misc fulltext-link" href="https://www.osti.gov/servlets/purl/958677" title="Link to document media" target="_blank" rel="noopener" data-ostiid="958677" data-product-type="Patent" data-product-subtype="">Full Text Available</a></span></li> </ul> </div> </div> </div> <div class="clearfix"></div> </div> </li> </ul> </aside> </div> </section> </div> <div class="col-sm-3 order-sm-3"> <ul class="nav nav-stacked"> <li class="active"><a class="tab-nav disabled" data-tab="related" style="color: #636c72 !important; opacity: 1;"><span class="fa fa-angle-right"></span> Similar Records</a></li> </ul> </div> </div> </section> </div></div> </div> </div> </section> <footer class="" style="background-color:#f9f9f9; /* padding-top: 0.5rem; */"> <div class="footer-minor"> <div class="container"> <hr class="footer-separator" /> <div class="text-center" style="margin-top:1.25rem;"> <div class="pure-menu pure-menu-horizontal"> <ul class="pure-menu-list" id="footer-org-menu"> <li class="pure-menu-item"> <a href="https://energy.gov" target="_blank" rel="noopener noreferrer"> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" class="sprite sprite-footer-us-doe-min" alt="U.S. Department of Energy" /> </a> </li> <li class="pure-menu-item"> <a href="https://www.energy.gov/science/office-science" target="_blank" rel="noopener noreferrer"> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" class="sprite sprite-footer-office-of-science-min" alt="Office of Science" /> </a> </li> <li class="pure-menu-item"> <a href="/"> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" class="sprite sprite-footer-osti-min" alt="Office of Scientific and Technical Information" /> </a> </li> </ul> </div> </div> <div class="text-center small" style="margin-top:0.5em;margin-bottom:2.0rem;"> <div class="pure-menu pure-menu-horizontal"> <ul class="pure-menu-list"> <li class="pure-menu-item"><a href="https://www.osti.gov/disclaim" target="_blank" rel="noopener noreferrer" class="pure-menu-link"><span class="fa fa-institution"></span> Website Policies <span class="hidden-xs" >/ Important Links</span></a></li> <li class="pure-menu-item"><a href="/doepatents/contact" class="pure-menu-link"><span class="fa fa-comments-o"></span> Contact Us</a></li> <li class="d-block d-md-none"></li> <li class="pure-menu-item"><a href="https://www.facebook.com/ostigov" target="_blank" rel="noopener noreferrer" class="pure-menu-link social"><span class="fa fa-facebook" style=""></span></a></li> <li class="pure-menu-item"><a href="https://twitter.com/OSTIgov" target="_blank" rel="noopener noreferrer" class="pure-menu-link social"><span class="fa fa-twitter" style=""></span></a></li> <li class="pure-menu-item"><a href="https://www.youtube.com/user/ostigov" target="_blank" rel="noopener noreferrer" class="pure-menu-link social"><span class="fa fa-youtube-play" style=""></span></a></li> </ul> </div> </div> </div> </div> </footer> <link href="/doepatents/css/doepatents.fonts.200630.1301.css" rel="stylesheet"> <script src="/doepatents/js/doepatents.200630.1301.js"></script><noscript></noscript> <script defer src="/doepatents/js/doepatents.biblio.200630.1301.js"></script><noscript></noscript> <script async type="text/javascript" src="/doepatents/js/Universal-Federated-Analytics-Min.js?agency=DOE" id="_fed_an_ua_tag"></script><noscript></noscript> </body> <!-- DOE Patents v.200630.1301 --> </html>