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      Nanostructures: Current uses and future applications in food science

      review-article
      a , b , a , * ,
      Journal of Food and Drug Analysis
      Taiwan Food and Drug Administration
      food packaging, food science, nanocomposites, nanoencapsulation, nanostructures

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          Abstract

          Recent developments in nanoscience and nanotechnology intend novel and innovative applications in the food sector, which is rather recent compared with their use in biomedical and pharmaceutical applications. Nanostructured materials are having applications in various sectors of the food science comprising nanosensors, new packaging materials, and encapsulated food components. Nanostructured systems in food include polymeric nanoparticles, liposomes, nanoemulsions, and microemulsions. These materials enhance solubility, improve bioavailability, facilitate controlled release, and protect bioactive components during manufacture and storage. This review highlights the applications of nanostructured materials for their antimicrobial activity and possible mechanism of action against bacteria, including reactive oxygen species, membrane damage, and release of metal ions. In addition, an overview of nanostructured materials, and their current applications and future perspectives in food science are also presented.

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          Most cited references112

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          A review of chitin and chitosan applications

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            The bactericidal effect of silver nanoparticles.

            Nanotechnology is expected to open new avenues to fight and prevent disease using atomic scale tailoring of materials. Among the most promising nanomaterials with antibacterial properties are metallic nanoparticles, which exhibit increased chemical activity due to their large surface to volume ratios and crystallographic surface structure. The study of bactericidal nanomaterials is particularly timely considering the recent increase of new resistant strains of bacteria to the most potent antibiotics. This has promoted research in the well known activity of silver ions and silver-based compounds, including silver nanoparticles. The present work studies the effect of silver nanoparticles in the range of 1-100 nm on Gram-negative bacteria using high angle annular dark field (HAADF) scanning transmission electron microscopy (STEM). Our results indicate that the bactericidal properties of the nanoparticles are size dependent, since the only nanoparticles that present a direct interaction with the bacteria preferentially have a diameter of approximately 1-10 nm.
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              Antimicrobial effects of silver nanoparticles.

              The antimicrobial effects of silver (Ag) ion or salts are well known, but the effects of Ag nanoparticles on microorganisms and antimicrobial mechanism have not been revealed clearly. Stable Ag nanoparticles were prepared and their shape and size distribution characterized by particle characterizer and transmission electron microscopic study. The antimicrobial activity of Ag nanoparticles was investigated against yeast, Escherichia coli, and Staphylococcus aureus. In these tests, Muller Hinton agar plates were used and Ag nanoparticles of various concentrations were supplemented in liquid systems. As results, yeast and E. coli were inhibited at the low concentration of Ag nanoparticles, whereas the growth-inhibitory effects on S. aureus were mild. The free-radical generation effect of Ag nanoparticles on microbial growth inhibition was investigated by electron spin resonance spectroscopy. These results suggest that Ag nanoparticles can be used as effective growth inhibitors in various microorganisms, making them applicable to diverse medical devices and antimicrobial control systems.
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                Author and article information

                Journal
                J Food Drug Anal
                J Food Drug Anal
                Journal of Food and Drug Analysis
                Taiwan Food and Drug Administration
                1021-9498
                2224-6614
                2017
                19 March 2017
                : 25
                : 2
                : 245-253
                Affiliations
                [a ]Department of Biology, Jackson State University, Jackson, Mississippi, USA
                [b ]Division of Environmental Health Sciences, College of Public Health, The Ohio State University, Columbus, Ohio, USA
                Author notes
                [* ]Corresponding author: Department of Biology, Jackson State University, P.O. Box 18540, Jackson, Mississippi 39217, USA. E-mail address: huey-min.hwang@ 123456jsums.edu (H.-M. Hwang).
                Article
                jfda-25-02-245
                10.1016/j.jfda.2017.02.004
                9332533
                28911665
                583e12ed-ce9a-458b-85de-1a416f1542b8
                © 2017 Taiwan Food and Drug Administration

                This is an open access article under the CC-BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                : 23 February 2017
                : 23 February 2017
                Funding
                Funded by: National Science Foundation-Centers of Research Excellence in Science and Technology (NSF-CREST)
                Award ID: #HRD-157754
                This study was supported by NSF-CREST program [the National Science Foundation-Centers of Research Excellence in Science and Technology (NSF-CREST)] with grant #HRD-157754 to Jackson State University.
                Categories
                Review Article

                food packaging,food science,nanocomposites,nanoencapsulation,nanostructures

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