Affiliation:
1. Department of Food Biotechnology and Food Process Engineering, Technische Universität Berlin, Koenigin-Luise-Str. 22, 14195 Berlin, Germany
Abstract
Plant fibers are rich in dietary fiber and micronutrients but often exhibit poor functionality. Ultrasonication can affect the particle size of plant fiber, thereby influencing other techno-functional properties. Therefore, this study aimed to investigate the effects of high-intensity ultrasound on citrus, apple, oat, and pea fiber. Initially, solutions containing 1 wt% of plant fiber were homogenized using ultrasonication (amplitude 116 µm, t = 150 s, energy density = 225 kJ/L, P¯ = 325 W). Due to cavitation effects induced by ultrasound, differences in particle size and a shift in the ratio of insoluble and alcohol-insoluble fractions for dietary fiber were observed. Additionally, viscosities for citrus and apple fiber increased from 1.4 Pa·s to 84.4 Pa·s and from 1.34 Pa·s to 31.7 Pa·s, respectively, at shear rates of 100 1s. This was attributed to observed differences in the microstructure. Freeze-dried samples of purified citrus and apple fiber revealed thin and nearly transparent layers, possibly contributing to enhanced water binding capacity and, therefore, increased viscosity. Water binding capacity for citrus fiber increased from 18.2 g/g to 41.8 g/g, and a 40% increase was observed for apple fiber. Finally, ultrasound demonstrated itself be an effective technology for modifying the techno-functional properties of plant fiber, such as water binding capacity.
Funder
Federal Ministry of Education and Research
Subject
Plant Science,Health Professions (miscellaneous),Health (social science),Microbiology,Food Science
Reference69 articles.
1. Fu, J., Zheng, Y., Gao, Y., and Xu, W. (2022). Dietary Fiber Intake and Gut Microbiota in Human Health. Microorganisms, 10.
2. Dietary fibre in foods: A review;Dhingra;J. Food Sci. Technol.,2011
3. Kontogiorgos, V. (2020). Pectin: Technological and Physiological Properties, Springer Nature. [1st ed.].
4. Pectin structure and biosynthesis;Mohnen;Curr. Opin. Plant Biol.,2008
5. Mudgil, D., and Barak, S. (2019). Dietary Fiber: Properties, Recovery, and Applications, Elsevier.
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