期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 193, 期 -, 页码 1371-1378出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.10.199
关键词
Chenopodium quinoa; Nonenyl succinic anhydride (NSA); Pickering emulsion; Octenyl succinic anhydride; Dynamic rheology; Oil-in-water emulsion; Degree of substitution; Dodecenyl succinic anhydride
Nonenyl succinic anhydride (NSA) modification of starch can adjust physicochemical properties, enhance emulsifying capacity, and serve as potential Pickering emulsion stabilizers. Starch modification with a DS of 0.0359 has the highest emulsifying capacity.
Nonenyl succinic anhydride (NSA) modification could be an alternative to octenyl succinic anhydride (OSA) modification of starch to obtain a range of physicochemical and rheological properties and for emulsification applications. A series of NSA-modified quinoa starches in granular form with different degrees of substitution (DS) (0.0080, 0.0175, 0.0359, and 0.0548) were prepared. The NSA modifications reduced the gelatinization temperatures and frequency dependence of storage modulus (G'), while increasing the peak viscosity, gel hardness, and G'. The NSA-modified quinoa starches with medium DS were the most effective in stabilising Pickering emulsions. The droplet size of Pickering emulsions decreased first with increasing DS before increasing at the highest DS. Modified starch with a DS of 0.0359 had the highest emulsifying capacity. Apart from the commonly used octenyl succinic anhydride (OSA) modification, the NSA-modified starches could be potential candidates as efficient Pickering emulsion stabilizers.
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