香芹酚
材料科学
抗菌活性
动力学
多孔性
化学工程
发泡剂
复合材料
化学
细菌
精油
食品科学
工程类
物理
生物
量子力学
遗传学
作者
Francesco Lopresti,Luigi Botta,Roberto Scaffaro,Vincenzo Bilello,Luca Settanni,Raimondo Gaglio
标识
DOI:10.1016/j.eurpolymj.2019.109298
摘要
In this work, the feasibility of antibacterial biopolymeric foams containing carvacrol (CRV) for potential food packaging applications was investigated. Sodium bicarbonate (SB) was chosen as foaming agent and a commercial biodegradable polymer, Mater-Bi® (MB), as a matrix. MB/SB and MB/SB/CRV systems were prepared by melt mixing and the foaming process was conducted in a laboratory press. The influence of foaming agent and antibacterial additive content was investigated. The foamed samples were characterized through morphological analysis, mechanical tests and measurements of CRV release kinetics. Moreover, a mathematical model, i.e. power law model, was used to fit the release data in order to investigate the release mechanism. The antibacterial activity of foams containing CRV was tested in vitro against pro-technological, spoilage and pathogenic bacteria applying the disc diffusion method. The results showed that by using 3% of SB it is possible obtain foams with a porosity of about 40%. The presence of carvacrol, strongly influenced the properties of the biopolymeric foams but at the higher content ensured antibacterial activity of the samples.
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