Effects of Pine Bark Extract on Physicochemical Properties and Biological Activity of Active Chitosan Film by Bionic Structure of Dragonfly Wing

Coatings

Liyan Wang¹  Kang Wan¹  Xu Teng¹  Mengdi Cong¹  Miao Feng²  Lili Ren³ 

[1] College of Food Science and Engineering, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, China;College of Marxism, ChangChun Polytechnic, 3278 Weixing Road, Changchun 130033, China;Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China;

关键词: chitosan;    pine bark extract;    bionic structure;    film;   

DOI  :  10.3390/coatings11091077

来源: DOAJ

【 摘 要 】

Bionic and active films based on chitosan were developed with the bionic structure of dragonfly wings incorporating pine bark extract (PBE). Physicochemical properties of the films, including thickness, opacity, moisture content, color, mechanical properties, and water vapor permeability were measured. Antioxidant activity of the films was characterized by DPPH free radical scavenging activity. The interaction between chitosan and PBE was explored by attenuated total reflectance Fourier transform infrared spectrometry, X-ray diffraction, and differential scanning calorimetry. The results indicated that the addition of PBE gave rise to the films greater opacity, redness, and darker appearance. Compared with pure chitosan film, the thickness, opacity, mechanical properties, and oxidation resistance of the bionic chitosan–PBE film increased, and the water vapor permeability decreased. The films based on chitosan incorporated PBE and with the bionic structure of dragonfly wings can potentially be applied to food packaging.

【 授权许可】

Unknown