Non-thermal treatments of strawberry pulp: The relationship between quality attributes and microstructure

• Published in: Ultrasonics sonochemistry 2023-08, Vol.98, p.106508-106508, Article 106508
• Main Authors: Xing, Ying, Ma, Qiudi, Wang, Kunhua, Dong, Xiaobo, Wang, ShuangShuang, He, Peiyun, Wang, Jun, Xu, Huaide
• Format: Article
• Language: English
• Subjects: Microstructure; Non-thermal treatment; Original; Quality attributes; Strawberry pulp
• ISSN: 1350-4177; 1873-2828
• DOI: 10.1016/j.ultsonch.2023.106508

[Display omitted] •US treatment improves the majority of the quality attributes of strawberry pulp.•The particle size is reduced, and the cell is destroyed after US treatment.•EB and US treatments facilitate the retention of volatile compounds content.•The enhancement of quality attributes is closely related to microstructure change. The relationship between quality attributes and microstructure in strawberry pulp after pasteurization (PS), ultrasound (US), electron beam irradiation (EB), and high pressure (HP) treatments was investigated. The results showed that US treatment decreased the viscosity to the lowest by 80.15% and increased the a* value, cloudy stability, and contents of titratable acid, total soluble solid, organic acids, total phenols, total flavonoids, and total anthocyanins (TAC), as well as its antioxidant capacity, due to the decrease in particle size, the destruction of microstructure, and the release of intracellular compounds. US and EB treatments could maintain the volatile compounds. The greatest deterioration in TAC and volatile compound content was found in the pulp treated with PS and HP treatments. HP treatment was beneficial to the enhancement of apparent viscosity, organic acids, and soluble sugar. These results provided insights into the enhancement of quality attributes in strawberry pulp due to the microstructure change.