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Antimicrobial activity, physical, mechanical and barrier properties of sugar palm based nanocellulose/starch biocomposite films incorporated with cinnamon essential oil
Journal of Materials Research and Technology ( IF 6.4 ) Pub Date : 2020-12-31 , DOI: 10.1016/j.jmrt.2020.12.091
R. Syafiq , S.M. Sapuan , M.R.M. Zuhri

The demand of antimicrobial active packaging is escalating due to the needs of improving quality and shelf life of food. In this work, sugar palm starch (SPS)/sugar palm nanocrystalline cellulose (SPNCC) incorporated with cinnamon essential oil (EO) biodegradable nanocomposite films were prepared by using solvent casting method. Mechanical properties test revealed that films incorporated with cinnamon EO showed improved tensile strength and tensile modulus values from 4.8 to 5.3 MPa and 122.49–130.52 MPa respectively. Additionally, the density and moisture content were reduced from 1.38 to 1.31 g/cm3 and from 13.65 to 12.33% respectively. The antimicrobial test was carried out by agar disc method (ADM) to evaluate the inhibition effect of the films on the gram positive bacteria, gram negative bacteria and yeast. The result suggested that The higher the amount of EO used (2.0 wt) yielded, the higher the inhibition zone occurred for B. subtilis, S. aereus and E. coli, which were 7.85, 6.63, and 7.43 mm respectively. Overall, cinnamon EO incorporated SPS/SPNCC biodegradable nanocomposite film is a good candidate as an alternative for active packaging material.



中文翻译:

掺有肉桂精油的糖棕基纳米纤维素/淀粉生物复合薄膜的抗菌活性,物理,机械和阻隔性能

由于需要提高食品的质量和保质期,对抗菌活性包装的需求正在增加。在这项工作中,通过溶剂浇铸法制备了掺有肉桂精油(EO)的可生物降解纳米复合膜的糖棕淀粉(SPS)/糖棕纳米晶纤维素(SPNCC)。力学性能测试表明,掺入肉桂EO的薄膜的抗张强度和拉伸模量值分别从4.8到5.3 MPa和122.49–130.52 MPa有所改善。此外,密度和水分含量从1.38降低至1.31 g / cm 3和分别从13.65%到12.33%。通过琼脂圆盘法(ADM)进行抗微生物试验,以评价薄膜对革兰氏阳性菌,革兰氏阴性菌和酵母菌的抑制作用。结果表明,所用的EO量(2.0 wt)越高,枯草芽孢杆菌,无油链球菌大肠杆菌的抑制区就越高分别为7.85、6.63和7.43 mm。总体而言,掺入肉桂EO的SPS / SPNCC可生物降解纳米复合膜是替代活性包装材料的理想选择。

更新日期:2021-01-19
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