Gelatin-based functional films integrated with grapefruit seed extract and TiO2 for active food packaging applications

被引：208
作者：
Riahi, Zohreh [1 ,2 ]
Priyadarshi, Ruchir [1 ]
Rhim, Jong-Whan [1 ]
Bagheri, Reza [2 ,3 ]
机构：
[1] Kyung Hee Univ, BioNanocomposite Res Inst, Dept Food & Nutr, 26 Kyungheedae Ro, Seoul 02447, South Korea
[2] Sharif Univ Technol, Inst Nanosci & Nanotechnol, Tehran, Iran
[3] Sharif Univ Technol, Dept Mat Sci & Engn, Polymer Mat Res Grp PMRG, Tehran, Iran
来源：
FOOD HYDROCOLLOIDS | 2021年 / 112卷
基金：
新加坡国家研究基金会;
关键词：
TiO2; GSE; Gelatin; Nanocomposites; Antioxidant; Antimicrobial; ANTIMICROBIAL ACTIVITY; ANTIOXIDANT ACTIVITY; COMPOSITE FILM; MECHANICAL-PROPERTIES; CHITOSAN FILMS; ESSENTIAL OIL; NANOCOMPOSITE; ANTIBACTERIAL; NANOTUBES; NANOPARTICLES;
D O I：
10.1016/j.foodhyd.2020.106314
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Gelatin-based functional films were prepared by the addition of grapefruit seed extract (GSE, 5 wt% based on gelatin) and various amounts of TiO2 (0.5, 1.0, 3.0, and 5.0 wt% based on gelatin). TiO2 was evenly dispersed in the gelatin film, but the film surface roughness was increased as the concentration of TiO2 increased. The mechanical strength and water contact angle (WCA) of the composite film were the highest, while the water vapor permeability (WVP) was the lowest when 0.5 wt% TiO2 was used. The addition of GSE slightly reduced the UV light transmittance, but the addition of TiO2 almost completely prevented the UV light transmission. The addition of GSE and TiO2 did not significantly influence the thermal stability of gelatin film. The Gel/GSE/TiO2 composite film showed some antioxidant activity and strong antibacterial activity against E. coli and L. monocytogenes, mainly due to the GSE. The gelatin/GSE/TiO2 composite films with high UV-barrier and antimicrobial functions with some antioxidant activity are likely to be used for active food packaging applications.
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页数：10
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