Abstract Interactions between tea products (tea polyphenols and catechins) and wheat starch (WS) during retrogradation were investigated. Tea product-fortified WS showed retarded retrogradation based on thermogravimetric analysis, X-ray diffraction, and Fourier-transform infrared spectroscopy (FT-IR). Thermogravimetric analysis showed that the addition of tea products led to the shift of the degradation temperature of WS toward lower temperature, indicating changes in the starch structure due to interaction with tea products. Tea product-WS mixtures had less crystallinity than controls during storage at 4°C, which was more noticeable for samples treated with tea polyphenols. In FT-IR spectra, tea product-WS complexes gave broadened O–H stretching and C–O–H bending vibrations compared with controls. Tea products presumably formed hydrogen bonds with WS, interfering with the reassociation of starch chains during storage, and thereby delaying retrogradation. Thus, tea products may be used as potential anti-retrogradation additives in the food industry.
Interactions between tea products and wheat starch during retrogradation
Yang-Jun Lv,Ming Li,Shi-kang Zhang,Yulan Jiang,L. Jun,Haihua Zhang
Published 2020 in Food bioscience
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- Publication year
2020
- Venue
Food bioscience
- Publication date
2020-04-01
- Fields of study
Chemistry
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