Deciphering composition-structure-taste relationship of black tea-infusion via assessments of nanoparticles by centrifugal treatment

IF 6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

LWT - Food Science and Technology Pub Date : 2025-03-06 DOI:10.1016/j.lwt.2025.117601

Yifan Li , Weichun Pan , Zhihui Feng , Feina Gu , Jianxin Chen , Fang Wang , Jieqiong Wang , Mingming Zhang , Chunmei Li , David Julian McClements , Junfeng Yin

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Abstract

Keemun tea infusion was selected as a model system under various centrifugation speeds to build a relationship among chemical composition, properties of nanoparticles in tea infusion (Tea-NPs), and tea tastes via chemical analyses, sensory evaluation, and light scattering techniques. The research results showed that the hydrodynamic radius (R_h) of the Tea-NPs in the black tea infusion ranged from 100 to 250 nm, with a negative charge (−10 to −13 mV). The gyration radius (R_g) and zeta-potential assessments elucidated that Tea-NPs underwent structural modifications, which altered their size, shape, and compactness. High-speed centrifugation caused the dissolution of components such as polysaccharides in the Tea-NPs, and changes in the particle compactness and aggregation altered the structure of the Tea-NPs, resulting in an increase in R_h, while reducing the bitterness and enhancing the overall flavor of the tea infusion. This study highlights the important role of Tea-NPs in tea quality evaluation and their potential to drive innovative methods for improving tea product quality.

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来源期刊

LWT - Food Science and Technology 工程技术-食品科技

CiteScore

11.80

自引率

6.70%

发文量

1724

审稿时长

65 days

期刊介绍： LWT - Food Science and Technology is an international journal that publishes innovative papers in the fields of food chemistry, biochemistry, microbiology, technology and nutrition. The work described should be innovative either in the approach or in the methods used. The significance of the results either for the science community or for the food industry must also be specified. Contributions written in English are welcomed in the form of review articles, short reviews, research papers, and research notes. Papers featuring animal trials and cell cultures are outside the scope of the journal and will not be considered for publication.