期刊
FOOD HYDROCOLLOIDS
卷 124, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2021.107250
关键词
Bee products; Edible films; Food spoilage; Food preservation; Beef; Active packaging
资金
- FIC Regional [IDI 30126395-0]
- CONICYT Beca Doctorado Nacional [21110822]
- PAI-CONICYT Tesis de Doctorado en la Empresa [781412002]
- ANID CONICYT PIA/APOYO CCTE [AFB170007]
- Vicerectoria de Investigacion - Pontificia Universidad Catolica de Chile
This study reported for the first time the physical, antioxidant, and antibacterial properties of edible k-carrageenan films containing bee pollen and honey extracts, as well as their evaluation in vitro and on beef. The extracts significantly increased the physical properties and hydro-philicity of the films, as well as the antioxidant and antiradical activity. Nevertheless, the antibacterial activity was not affected by the addition of extracts.
The physical, antioxidant, and antibacterial properties of edible k-carrageenan films containing bee pollen and honey extracts, as well as their evaluation in vitro and on beef, are reported for the first time. Thickness, tensile strength, elongation at break, puncture force, contact angle, water vapor permeability, UV-screening, thermal analysis, color, antioxidant activity in terms of iron reducing power (FRAP) and antiradical power on DPPH radical, as well as antibacterial activity against Escherichia coli, Staphylococcus aureus, Pseudomonas spp., aerobic plate counts were determined. All the extracts significantly increased the physical properties and the hydro-philicity of the films. The use of bee pollen and ulmo honey extracts did not significantly change the films color, whereas the quillay honey extract turned them reddish. Thermal stability of films were not affected by antiox-idant bee extracts addition. The antibacterial activity of the films added with the extracts, evaluated in isolation or on beef, was not significantly modified with the use of any of the extracts on any of the bacteria evaluated. On the contrary, the antioxidant and antiradical activity of isolated edible films and on meat increased with the use of all the extracts.
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