Modification of chitosan using hydrogen peroxide and ascorbic acid and its physicochemical properties including water solubility, oil entrapment and in vitro lipase activity

Summary Chitosan was modified using H2O2 and ascorbic acid with different incubation temperatures (4–40 °C). The properties of modified chitosan, including its oil entrapment ability, water solubility and the lipase‐resistant activities, using in vitro intestine model system were determined. Nuclear...

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Bibliographic Details
Published in:International journal of food science & technology 2019-06, Vol.54 (6), p.2300-2308
Main Authors: Hong, Seungmi, Choi, HyungSeok, Jo, SeungBin, Kim, Mi‐Ja, Lee, Suyong, Ahn, Sangdoo, Lee, JaeHwan
Format: Article
Language:English
Subjects:
Ascorbic acid
Beeswax
Biopolymers
Chitosan
Edible oils
Entrapment
Hydrogen peroxide
Hydrogen storage
Intestine
Lipase
lipid digestibility
modification
NMR
Nuclear magnetic resonance
pH effects
Physicochemical properties
physicochemical property
Solubility
Vitamin C
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Summary:Summary Chitosan was modified using H2O2 and ascorbic acid with different incubation temperatures (4–40 °C). The properties of modified chitosan, including its oil entrapment ability, water solubility and the lipase‐resistant activities, using in vitro intestine model system were determined. Nuclear magnetic resonance analysis showed that ascorbic acid was bound to modified chitosan. All of the modified chitosan from 4 to 40 °C demonstrated improved water solubility (even in pH 7) compared to non‐modified chitosan, which was only soluble at pH 4. Modified chitosan from 4 °C exhibited 27.40% of oil entrapment ability which was approximately four times higher than 6.87% of non‐modified chitosan. Modified chitosan from 4 and 40 °C had increased resistance against lipase activity compared to other biopolymers, including beeswax, carnauba wax and non‐modified chitosan. Modified chitosan could be used as a new food ingredient due to their high water solubility, oil‐entrapping ability and resisting lipase activity. Structural modification of chitosan from a method of H2O2 and ascorbic acid reaction were confirmed by FT‐IR and NMR analyses. Modified chitosan had high water solubility in pH 7 solution, oil entrapment ability, and high resistance against lipase activity.
ISSN:0950-5423
1365-2621
DOI:10.1111/ijfs.14146