Techno-functional attribute and antioxidative capacity of edible insect protein preparations and hydrolysates thereof: Effect of multiple mode sonochemical action

•With rich nutrient profile, insects are would-be ingredient for food applications.•Sonication yields H. illucens protein/hydrolysate (HIPH) with improved solubility.•Sonochemical action generates HIPH with augmented antioxidant effect.•HIPH may be used in food products based on desired functionalit...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2019-11, Vol.58, p.104676-104676, Article 104676
Main Authors: Mintah, Benjamin Kumah, He, Ronghai, Dabbour, Mokhtar, Xiang, Jiahui, Agyekum, Akwasi Akomeah, Ma, Haile
Format: Article
Language:English
Subjects:
Amino Acids - analysis
Animals
Antioxidant
Antioxidants - chemistry
Diptera - chemistry
Hermetia illucens
Hydrolysis
Hydrophobic and Hydrophilic Interactions
Insect Proteins - chemistry
Larva - chemistry
Proteolysis
Solubility
Superoxides - chemistry
Tecno-functional property
Ultrasonic Waves
Ultrasound
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Summary:•With rich nutrient profile, insects are would-be ingredient for food applications.•Sonication yields H. illucens protein/hydrolysate (HIPH) with improved solubility.•Sonochemical action generates HIPH with augmented antioxidant effect.•HIPH may be used in food products based on desired functionality/bioactivity. Hermetia illucens (edible insect) larvae protein, and hydrolysates were prepared using three pretreatment modes (conventional, fixed-frequency ultrasonic, and sweep-frequency). Protein subunit scores, microstructure, antioxidative activity, and techno-functional property of the respective isolates and hydrolysates were investigated. Alkaline protease hydrolysis significantly enhanced protein solubility, but impaired the emulsifying property and foaming stability. Isolates and hydrolysates treated by ultrasound exhibited highest antioxidative effect, and showed excellent solubility and foam expansion over wide (2–12) pH, likened the conventional. Ultrasonic, particularly sweep-frequency, treated hydrolysates overall showed superior solubility, foam, and antioxidative (ABTS, Superoxide scavenging, and Ferric-reducing) capacity than the remaining modes and isolates (p 
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2019.104676