Extraction, purification and characterization of pectin from alternative sources with potential technological applications

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Abstract

<p class="first" id="d14565671e67">Pectins are defined as a group of widely distributed plant cell wall polysaccharides that contain galacturonic acid linked at both the 1 and 4 positions. The wide use of pectin as an ingredient which imparts rheological and textural properties to various food products and the development of applications beyond the food industry have brought about its increase in production and influenced research towards alternative sources and improving the overall isolation process of pectic polysaccharides. In this context, this paper aims to give a complete perspective on the current state of pectin research by mainly focusing on recent research on the extraction of pectin from other feasible sources, on the post-extraction stages of pectin recovery from plant materials (purification and fractionation), and, finally, on the advancements in the study of the physical, chemical, rheological, and functional properties of pectin. </p>

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Pectin structure and biosynthesis.

D Mohnen (2008)

Pectin is structurally and functionally the most complex polysaccharide in plant cell walls. Pectin has functions in plant growth, morphology, development, and plant defense and also serves as a gelling and stabilizing polymer in diverse food and specialty products and has positive effects on human health and multiple biomedical uses. Pectin is a family of galacturonic acid-rich polysaccharides including homogalacturonan, rhamnogalacturonan I, and the substituted galacturonans rhamnogalacturonan II (RG-II) and xylogalacturonan (XGA). Pectin biosynthesis is estimated to require at least 67 transferases including glycosyl-, methyl-, and acetyltransferases. New developments in understanding pectin structure, function, and biosynthesis indicate that these polysaccharides have roles in both primary and secondary cell walls. Manipulation of pectin synthesis is expected to impact diverse plant agronomical properties including plant biomass characteristics important for biofuel production.