Vasconcelos Larruama, de Souza Marthyna, de Oliveira Juliana, Silva Filho Edson, Silva André, Mazzetto Selma Elaine, Pereira Elzânia Sales, Oliveira Ronaldo Lopes, Bezerra Leilson
Department of Animal Science, Animal Health and Science Graduate, Federal University of Campina Grande, Avenida Universitária, s/n-Jatobá, Patos 58708110, Brazil.
Department of Animal Science, Federal University of Piaui, Ininga, s/n, Teresina 64049550, Brazil.
Antioxidants (Basel). 2021 Aug 28;10(9):1378. doi: 10.3390/antiox10091378.
The objective of this work was to obtain and characterize sodium alginate-based biopolymer films with the addition of cashew nut shell liquid (CNSL). The study employed a completely randomized design, including 0%, 0.5%, 1%, and 1.5% inclusion of CNSL. Uniform formation of the films was observed, and the addition of CNSL provided better thermal resistance than did the treatment without inclusion, while the addition of CNSL reduced the homogeneity of the microstructure, especially for the 1.5% inclusion level. The permeability of the film increased as the level of CNSL increased, especially in response to the concentrations of 1% and 1.5%, and no significant difference in permeability was observed between these treatments. The tensile strength decreased proportionally as a function of the addition of CNSL, as its inclusion increased the elasticity and elongation of the films. In addition, the films with CNSL demonstrated strong antioxidant activity and discrete antimicrobial activity, and ecotoxicity analysis showed that the levels of CNSL tested and the films produced were nontoxic. Thus, these films are promising and self-sustainable alternatives for the agrifood industry.
这项工作的目的是获得并表征添加了腰果壳液（CNSL）的海藻酸钠基生物聚合物薄膜。该研究采用完全随机设计，包括添加0%、0.5%、1%和1.5%的CNSL。观察到薄膜形成均匀，与未添加的处理相比，添加CNSL具有更好的耐热性，而添加CNSL降低了微观结构的均匀性，尤其是在1.5%添加水平时。薄膜的渗透性随着CNSL水平的增加而增加，特别是在1%和1.5%的浓度下，并且在这些处理之间未观察到渗透性的显著差异。拉伸强度随着CNSL添加量的增加而成比例下降，因为其添加增加了薄膜的弹性和伸长率。此外，含有CNSL的薄膜表现出较强的抗氧化活性和离散的抗菌活性，生态毒性分析表明，所测试的CNSL水平和所生产的薄膜是无毒的。因此，这些薄膜是农业食品工业中有前景且自我可持续的替代品。
