NDLI: Pectin, a versatile polysaccharide present in plant cell walls

Content Provider	Springer Nature Link
Author	Voragen, Alphons G. J. Coenen, Gerd Jan Verhoef, René P. Schols, Henk A.
Copyright Year	2009
Abstract	Pectin or pectic substances are collective names for a group of closely associated polysaccharides present in plant cell walls where they contribute to complex physiological processes like cell growth and cell differentiation and so determine the integrity and rigidity of plant tissue. They also play an important role in the defence mechanisms against plant pathogens and wounding. As constituents of plant cell walls and due to their anionic nature, pectic polysaccharides are considered to be involved in the regulation of ion transport, the porosity of the walls and in this way in the control of the permeability of the walls for enzymes. They also determine the water holding capacity. The amount and composition of pectic molecules in fruits and vegetables and other plant produce strongly determine quality parameters of fresh and processed food products. Pectin is also extracted from suitable agro-by-products like citrus peel and apple pomace and used in the food industry as natural ingredients for their gelling, thickening, and stabilizing properties. Some pectins gain more and more interest for their health modulating activities. Endogenous as well as exogenous enzymes play an important role in determining the pectic structures present in plant tissue, food products, or ingredients at a given time. In this paper functional and structural characteristics of pectin are described with special emphasis on the structural elements making up the pectin molecule, their interconnections and present models which envisage the accommodation of all structural elements in a macromolecule. Attention is also given to analytical methods to study the pectin structure including the use of enzymes as analytical tools.
Starting Page	263
Ending Page	275
Page Count	13
File Format	PDF
ISSN	10400400
Journal	Structural Chemistry
Volume Number	20
Issue Number	2
e-ISSN	15729001
Language	English
Publisher	Springer US
Publisher Date	2009-03-13
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pectin Chemical structure Structure elucidation Enzymes Functionalities Theoretical and Computational Chemistry Physical Chemistry Computer Applications in Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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