β -(1,4)-Polyglucuronic Acids – An Overview

Abstract

Abstract:Polyuronides are an acidic class of polysaccharides with interesting rheological and biological properties. However, except pectin and alginate, the structural variability of this class of polysaccharides is poor and low described in literature. In this context, a new generation of polyuronides has been isolated from two sources in the middle of the 90's. Firstly, a bacterial -(1,4) polyglucuronic acid called glucuronan was identified as the sole exopolysaccharide produced by a bacteria belonging to the Rhizobiaceae family. Secondly, the development of the TEMPO chemistry led to the production at large scale of oxidized cellulose called cellouronate. Both new polyuronides were largely patented and found applications in several industrial areas. Moreover, the biodegradation study of these polysaccharides has led to the identification of a new family of polysaccharide lyases very specific for these substrates. This review focuses on the actual knowledge of this class of acidic polysaccharides and on the enzymes acting about them.

Evaluation of Antimicrobial Activity of Some Enzymes of Trichoderma harzianum Immobilized on Polyester Cloth Films on The Disease Incidence of Postharvest Black Mold Disease of Tomatoes

“…consists mainly from glucuronic acid which is characteristic to plant cell wall hemicelluloses (Gancedo et al, 1966). The glucuronic acid is closely related to cellulose where it contains β (1-4) linkage (Tavernier et al, 2008) also, polyglucuronic acid can be produced by selective oxidation of cellulose using nitrogen oxides (Yackel &Kenyon, 1942 andMaurer &Reiff, 1943). While, the production and antifungal activity of chitinase enzyme of T. harzianum may be suppressed or activated by many compounds produced during the relationship among the pathogen, the antagonist and the host plant (Ulhoa & Peberdy, 1991).…”

Supramolecular structure and anomer‐selective formation of polyglucuronic acid

“…Muscovite mica squares ( ca 1 cm) were used as substrates to image the polyglucuronic fibrils. First, 50 μL of a 1 mg mL –1 solution of glucuronic acid in ultrapure water, with unadjusted pH or pH adjusted to acidic or basic depending on the case, was added to freshly cleaved mica and allowed to adsorb for 20 min.…”

“…Polyglucuronic acids represent a subject with increased popularity in recent years due to their pharmaceutical applications as gelling and thickening agents, their biological and antiflocculation properties, their usage as biofertilizers and pesticides and their possible use for biodegradable packaging and coating materials . Additional uses are collected in a review …”

A practical perspective on ulvan extracted from green algae

“…In the particular case of ulvan, it precipitates from aqueous solutions with ethanol or acetone, usually four volumes of the chosen organic solvent (Alves et al 2010;Gosselin et al 1964;Siddhanta et al 2001). Ethanol precipitation allows the separation of the polysaccharide from low molecular ethanol-soluble compounds (Béress et al 1993) and the removal of some pigments (Lahaye 1991); thus it is considered as a purifying step as well (Elboutachfaiti et al 2011;Ovodov 1975;Tavernier et al 2008).…”