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Flavor, antimicrobial activity and physical properties of gelatin film incorporated with of ginger essential oil

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Abstract

Adding essential oil into the gelatin-based film can enhance the antibacterial activity of the film, but excessive amounts of addition will bring the film an unpleasant flavor and reduce its mechanical performance. Hence, we prepared functional gelatin-based films by incorporating low content of ginger essential oil (GEO). The flavor of GEO was not detected from the films containing less than 1% GEO. The antimicrobial activity of films was found to be proportional to GEO content. As GEO content increased from 0 to 1%, the value of water vapor permeability (WVP) and elongation at break (EAB) increased, whereas the value of tensile strength (TS) of film decreased. The Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy analysis revealed the vibration of gelatin film was affected by adding low content of essential oil. Surface morphologies demonstrated oil droplets and a discontinuous structure, and cross-section morphologies proved the formation of a loose structure as GEO was incorporated in the film through SEM. Sensory evaluation revealed that composite films incorporated with 0.5% GEO exhibited the best performance. The resulting films can be used as antimicrobial packaging materials with good physical properties and sensory performance.

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The data sets supporting the results of this article are included within the article and its additional files.

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The software of Statistical Package for Social Science (SPSS) and Origin were used for statistical test and chart drawing respectively.

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Acknowledgements

This study was supported by the National Key R&D Program of China (No. 2018YFD0901101), the National Natural Science Foundation of China (No. 31860428, 31660487), and the Earmarked Fund for the China Agriculture Research System (CARS-45).

Funding

This study was supported by the National Key R&D Program of China (No. 2018YFD0901101), the National Natural Science Foundation of China (No. 31860428, 31660487), and the Earmarked Fund for the China Agriculture Research System (CARS-45).

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All authors contributed to this article. Xin Li completed the experiment operating and paper writing, Zong-Cai Tu provided financial support and experiment design, Xiao-Mei Sha revised the article, Yun-Hua Ye and Zhong-Ying Li participated in the operation of the experiment.

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Correspondence to Zong-Cai Tu or Xiao-Mei Sha.

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Li, X., Tu, ZC., Sha, XM. et al. Flavor, antimicrobial activity and physical properties of gelatin film incorporated with of ginger essential oil. J Food Sci Technol 59, 815–824 (2022). https://doi.org/10.1007/s13197-021-05080-x

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  • DOI: https://doi.org/10.1007/s13197-021-05080-x

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