U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Savary, Brettitem
                                            Nunez, Albertoitem
                                            Yoo, Sang Hoitem
                                            Liu, Linshu
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 2/20/2003
                                    Publication  Date: 3/20/2003
                                    Citation: Savary, B.J., Nunez, A., Yoo, S., Liu, L.S. 2003. Pectin acetylesterase - analysis and application for sugar beet pectin utilization. Abstract for 1st Joint International Institute for Beet Research And American Society for Sugar Beet Technologists Congress. p.68. San Antonio, TX, 2003.Interpretive Summary:
                                Technical Abstract:      Sustainable technologies are being sought to provide new and higher-value coproducts from sugar beet pulp.  Pectin is a complex plant cell wall polysaccharide that represents a major fraction of sugar beet pulp.  One distinguishing feature of sugar beet pectin is a high content of C2 and C3 acetyl esters.  Such esters impart unique physical, chemical, and functional properties. Acetyl esters probably function biologically to restrict pectin depolymerizing enzyme activities.  The enzyme pectin actylesterase (EC 3.1.1.6) can specifically hydolyze such acetyl esters in homogalacturonan regions of pectin, thus it may play a critical role in cell wall modification during root development and during pest/pathogen interactions.  Pectin acetylesterase may be used technically in an efficient, environmentally-friendly bioprocess for modifying sugar beet pectin structure to improve performance and increase functionality.  Such pectins can be used to fabricate new biobased materials for application in drug delivery systems.  This presentation will summarize our recent developments in four areas supporting enzymatic modification of sugar beet pectin: 1) A new GC-MS method, with headspace solid-phase microextraction, for efficient determination of ester content in pectin and of esterase enzyme activity.  2) A specific polyacrylamide gel electrophoresis method to distinguish pectin esterase types.  3) The purification and biochemical characterization of pectin acetylesterase.  4) The preparation of porous "microsponge" matrices using enzyme-modified sugar beet pectins.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov