Preparation and characterization of liposoluble tea polyphenol based functional emulsion films and the regulation of its releasing property

IF 8.5 1区农林科学 Q1 CHEMISTRY, APPLIED Food Chemistry Pub Date : 2025-02-14 DOI:10.1016/j.foodchem.2025.143413

Liang Zhang , Ke-Jun Guo , Yin-Kai Huang , Dong-Ping Zeng , Ying Chen , Dongling Qiao , Mahwish Shaukat , Jian-Ya Qian

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Abstract

Functional films based on hydroxypropyl methylcellulose (HPMC)/ sodium citrate (SC) porous film and liposoluble tea polyphenol (LTP)/water Pickering emulsions stabilized by different contents of starch nanoparticles (NPs) were prepared. Addition of Pickering emulsion endowed the film surface pores, decreased oxygen permeability, water vapor permeability (WVP), hydrophilicity and good anti-oxidant effect. With increasing NPs, more smaller emulsion droplets appeared in the emulsion and filled into the porous structures of the film, the light transmittance and contact angle of the film increased. Functional film with 2 % NPs showed the lowest WVP and T_g, and highest stable LTP release ratio (4–12 week). That more surficial holes appeared and more emulsion droplets protrusions accumulated near the cross-sectional pores during the releasing process might facilitate the higher release of film-2 % NPs. The functional films have great potential to be used as light-shielding coatings, antioxidant capsule shells and sustained fresh-keeping “cards” for different oil systems.

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制备了基于羟丙基甲基纤维素（HPMC）/柠檬酸钠（SC）多孔膜和由不同含量的淀粉纳米颗粒（NPs）稳定的脂溶性茶多酚（LTP）/水皮克林乳液的功能薄膜。皮克林乳液的加入赋予了薄膜表面孔隙，降低了透氧率、透湿率（WVP）和亲水性，并具有良好的抗氧化效果。随着 NPs 的增加，乳液中出现更多更小的乳液液滴并填充到薄膜的多孔结构中，薄膜的透光率和接触角也随之增加。含 2% NPs 的功能薄膜的 WVP 和 Tg 最低，LTP 稳定释放率最高（4-12 周）。在释放过程中，更多的表面孔洞出现，更多的乳液液滴突起聚集在横截面孔隙附近，这可能会促进含 2% NPs 的薄膜获得更高的释放率。这种功能薄膜在用作遮光涂层、抗氧化胶囊外壳和不同油脂体系的持续保鲜 "卡片 "方面具有很大的潜力。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.