Hybrid nano-carrier of citral in starch composites for potential application in active packaging

IF 5.3 2区 地球科学 Q2 CHEMISTRY, PHYSICAL
Gianluca Viscusi , Elena Lamberti , Elisa Boccalon , Francesco Fancello , Severino Zara , Aurélie Schoubben , Morena Nocchetti , Giuliana Gorrasi
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Abstract

Nowaday the use of essential oils, having antimicrobial activity, is quite limited in the field of active packaging for the difficulty to retain the active compound for a long time into the material. The paper reports the design and fabrication of a nano-carrier able to incorporate and protect an essential oil (i.e. citral) for targeted applications. The hybrid filler was produced by growing layered double hydroxide (LDH) nanocrystals as plates on halloysite nanotubes (Hal) (Hal@LDH). Such hybrid filler was used as a carrier of citral as an antimicrobial essential oil. The active filler was incorporated into the starch matrix at 5, 10, and 15 wt% and films were produced. The structural organization of the filler was conducted by using Scansion Electron Microscopy (SEM), Thermogravimetric Analysis (TGA) and X-ray Diffraction (XRD) analysis. The obtained bio-composite films were structurally analyzed through XRD and SEM with EDX analysis. The physical performances were evaluated through the analysis of mechanical properties, contact angle, radical scavenging activity and release kinetics of citral, as a function of filler loading. To assess the possibility of using such composites for food packaging applications, tests were carried out on different strains such as Escherichia coli, Listeria monocytogenes, and Salmonella bongori.

淀粉复合材料中柠檬醛的混合纳米载体在活性包装中的潜在应用
如今,具有抗菌活性的精油在活性包装领域的应用相当有限,因为很难将活性化合物长时间保留在材料中。本文报告了一种纳米载体的设计和制造过程,这种载体能够将精油(即柠檬醛)融入并保护其定向应用。这种混合填料是通过在埃洛石纳米管(Hal)(Hal@LDH)上生长层状双氢氧化物(LDH)纳米晶体而制成的。这种混合填料被用作抗菌精油柠檬醛的载体。将活性填料以 5、10 和 15 wt% 的比例加入淀粉基质并制成薄膜。使用扫描电子显微镜(SEM)、热重分析(TGA)和 X 射线衍射(XRD)分析了填料的结构组织。通过 XRD 和 SEM 以及 EDX 分析,对获得的生物复合薄膜进行了结构分析。通过分析机械性能、接触角、自由基清除活性和柠檬醛释放动力学,评估了其物理性能与填料负载的函数关系。为了评估将这种复合材料用于食品包装的可能性,对大肠杆菌、李斯特菌和邦戈里沙门氏菌等不同菌株进行了测试。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Applied Clay Science
Applied Clay Science 地学-矿物学
CiteScore
10.30
自引率
10.70%
发文量
289
审稿时长
39 days
期刊介绍: Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...
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