title: Structure and physicochemical properties of octenyl succinic anhydride modified starches: a review.
abstract: Starches modified with octenyl succinic anhydride (OSA) have been used in a range of industrial applications, particularly as a food additive, for more than half a century. Interest in these products has grown in recent years as a result of new methods and applications becoming available. Due to a combination of OSA's hydrophobic and steric contribution and starch's peculiar highly branched macromolecular structure, these starch derivatives display useful stabilizing, encapsulating, interfacial, thermal, nutritional and rheological properties. We review the synthesis procedures, structural characterization methods and physico-chemical properties, and the influences of the botanical origins and structural parameters of OSA starches on physico-chemical properties. A better understanding of these features has the potential to lead to products with targeted macromolecular structures and optimized properties for specific applications.
authors.affiliation: Centre for Nutrition and Food Sciences, Queensland Alliance for Agricultural and Food Innovation, The University of Queensland, Brisbane, QLD 4072, Australia.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Sweedman
authors.forename: Morgan J
authors.initials: MJ
authors.lastname: Tizzotti
authors.forename: Christian
authors.initials: C
authors.lastname: Schäfer
authors.forename: Robert G
authors.initials: RG
authors.lastname: Gilbert
mesh_terms: D005503:Food Additives / Q000138:chemical synthesis / Q000737:chemistry; D006801:Humans; D015394:Molecular Structure; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000031:analogs & derivatives* / Q000737:chemistry / Q000648:ultrastructure; D013329:Structure-Activity Relationship; D013387:Succinic Anhydrides / Q000737:chemistry; D014783:Viscosity; D003313:Zea mays / Q000737:chemistry*
chemical_list: D005503:Food Additives; D013387:Succinic Anhydrides; C551966:octenyl succinic anhydride-modified starch; C031801:succinic anhydride; D013213:Starch