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Kumar A, Kumar A, Vats C, Sangwan P, Kumar V, Abhineet, Chauhan P, Chauhan RS, Chaudhary K. Recent insights into metallic nanoparticles in shelf-life extension of agrifoods: Properties, green synthesis, and major applications. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.1025342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Nanotechnology emerged as a revolutionary technology in various fields of applied sciences, such as biomedical engineering and food technology. The pivotal roles of nanocompounds have been explored in various fields, such as food protection, preservation, and enhancement of shelf life. In this sequence, metallic nanoparticles (MNPs) are proven to be useful in developing products with antimicrobial activity and subsequently improve the shelf life of agrifoods. The major application of MNPs has been observed in the packaging industry due to the combining ability of biopolymers with MNPs. In recent years, various metal nanoparticles have been explored to formulate various active food packaging materials. However, the method of production and the need for risk evaluation are still a topic of discussion among researchers around the world. In general, MNPs are synthesized by various chemical and physical means, which may pose variable health risks. To overcome such issues, the green synthesis of MNPs using microbial and plant extracts has been proposed by various researchers. In this review, we aimed at exploring the green synthesis of MNPs, their properties and characterization, various ways of utilizing MNPs to extend their shelf life, and, most importantly, the risk associated with these along with their quality and safety considerations.
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Abstract
Over the last few years, new nanoparticle preparation methods have emerged by replacing the usual reagents with plant extracts obtained in different conditions. An example of a natural plant extract is those of cruciferous vegetables, to obtain the new bio-nano-coatings. Given the composition of cruciferous extracts and large amounts of wastes produced all over the world, they can be successful substitutes to replace conventional coatings and extend the possibility of “smart coatings“. The present review aims to be a critical discussion regarding the application of cruciferous waste in nanotechnological applications. This review paper can be a starting report for different researchers who intend to use this sustainable approach “from green to nanotechnology” to transpose manufacturing from laboratory to industry. Applying this approach to obtain nanostructures with plant waste highlights the importance of minimizing and re-utilizing residues from primary and secondary processing via chemical and social intervention, in order to contribute to the sustainability needs of the planet and its inhabitants.
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Abstract
Metal nanoparticles (NPs) are increasingly being used in many areas, e.g., industry, pharmacy, and biomedical engineering. NPs can be obtained through chemical and biological synthesis or using physical methods. AgNPs, AuNPs, CuNPs, FeNPs, MgNPs, SnO2NPs, TiO2NPs, and ZnONPs are the most commonly synthesized metal nanoparticles. Many of them have anti-microbial properties and documented activity supported by many tests against some species of pathogenic bacteria, viruses, and fungi. AgNPs, which are used for the production of commercial self-sterilizing packages, are one of the best-explored nanoparticles. Moreover, the EFSA has approved the use of small doses of silver nanoparticles (0.05 mg Ag·kg−1) to food products. Recent studies have shown that metal NPs can be used for the production of coatings to prevent the spread of the SARS-CoV-2 virus, which has caused the global pandemic. Some nanoparticles (e.g., ZnONPs and MgONPs) have the Generally Recognized As Safe (GRAS) status, i.e., they are considered safe for consumption and can be used for the production of edible coatings, protecting food against spoilage. Promising results have been obtained in research on the use of more than one type of nanometals, which prevents the development of pathogen resistance through various mechanisms of inactivation thereof.
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Xing Y, Liao X, Liu X, Li W, Huang R, Tang J, Xu Q, Li X, Yu J. Characterization and Antimicrobial Activity of Silver Nanoparticles Synthesized with the Peel Extract of Mango. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5878. [PMID: 34640275 PMCID: PMC8510210 DOI: 10.3390/ma14195878] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 02/05/2023]
Abstract
The green synthesis of silver nanoparticles (AgNPs) from biological waste, as well as their excellent antibacterial properties, is currently attracting significant research attention. This study synthesized AgNPs from different mango peel extract concentrations while investigating their characteristics and antibacterial properties. The results showed that the AgNPs were irregular with rod-like, spherical shapes and were detected in a range of 25 nm to 75 nm. The AgNPs displayed antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), showing a more significant impact when synthesized with 0.20 g/mL of mango peel extract. Therefore, the antibacterial effect of different diluted AgNP concentrations on the growth kinetic curves of E. coli and S. aureus after synthesis with 0.20 g/mL mango peel extract was analyzed. The results indicated that the AgNP antibacterial activity was higher against S. aureus than against E. coli, while the AgNP IC50 in these two strains was approximately 1.557 mg/mL and 2.335 mg/L, respectively. This research provides new insights regarding the use of postharvest mango byproducts and the potential for developing additional AgNP composite antibacterial materials for fruit and vegetable preservation.
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Affiliation(s)
- Yage Xing
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Xingmei Liao
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Xiaocui Liu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Wenxiu Li
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Department of Agricultural Technology, Neijiang Vocational and Technical College, Neijiang 641000, China
| | - Ruihan Huang
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Jing Tang
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Qinglian Xu
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Xuanlin Li
- Key Laboratory of Grain and Oil Processing and Food Safety of Sichuan Province, College of Food and Bio-Engineering, Xihua University, Chengdu 610039, China; (Y.X.); (X.L.); (W.L.); (R.H.); (J.T.); (Q.X.); (X.L.)
- Key Laboratory of Food Non Thermal Technology, Engineering Technology Research Center of Food Non Thermal, Yibin Xihua University Research Institute, Yibin 644004, China
| | - Jinze Yu
- National Engineering Technology Research Center for Preservation of Agricultural Products, Key Laboratory of Storage of Agricultural Products, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, Tianjin 300384, China;
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Fierascu I, Fierascu RC, Ungureanu C, Draghiceanu OA, Soare LC. Application of Polypodiopsida Class in Nanotechnology-Potential towards Development of More Effective Bioactive Solutions. Antioxidants (Basel) 2021; 10:748. [PMID: 34066800 PMCID: PMC8151343 DOI: 10.3390/antiox10050748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 12/23/2022] Open
Abstract
The area of phytosynthesized nanomaterials is rapidly developing, with numerous studies being published yearly. The use of plant extracts is an alternative method to reduce the toxic potential of the nanomaterials and the interest in obtaining phytosynthesized nanoparticles is usually directed towards accessible and common plant species, ferns not being explored to their real potential in this field. The developed nanoparticles could benefit from their superior antimicrobial and antioxidant properties (compared with the nanoparticles obtained by other routes), thus proposing an important alternative against health care-associated and drug-resistant infections, as well as in other types of applications. The present review aims to summarize the explored application of ferns in nanotechnology and related areas, as well as the current bottlenecks and future perspectives, as emerging from the literature data.
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Affiliation(s)
- Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 060021 Bucharest, Romania;
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 060021 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| | - Camelia Ungureanu
- Department of General Chemistry, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| | - Oana Alexandra Draghiceanu
- Department of Natural Sciences, University of Pitesti, 1 Targu din Vale Str., 110040 Pitesti, Romania; (O.A.D.); (L.C.S.)
| | - Liliana Cristina Soare
- Department of Natural Sciences, University of Pitesti, 1 Targu din Vale Str., 110040 Pitesti, Romania; (O.A.D.); (L.C.S.)
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Al-Hunaiti A, Ghazzy A, Sweidan N, Mohaidat Q, Bsoul I, Mahmood S, Hussein T. Nano-Magnetic NiFe 2O 4 and Its Photocatalytic Oxidation of Vanillyl Alcohol-Synthesis, Characterization, and Application in the Valorization of Lignin. NANOMATERIALS 2021; 11:nano11041010. [PMID: 33920911 PMCID: PMC8071345 DOI: 10.3390/nano11041010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/09/2021] [Accepted: 04/11/2021] [Indexed: 11/16/2022]
Abstract
Here, we report on a phyto-mediated bimetallic (NiFe2O4) preparation using a Boswellia carterii extract, which was characterized by XRD, FT-IR, TGA, electron microscopy, magnetic spectroscopy, and Mössbauer spectroscopy measurements. The prepared nano-catalysts were tested for oxidation of lignin monomer molecules-vanillyl alcohol and cinnamyl alcohol. In comparison with previously reported methods, the nano NiFe2O4 catalysts showed high photocatalytic activity and selectivity, under visible light irradiation with a nitroxy radical initiator (2,2,6,6-tetramethylpiperidinyloxy or 2,2,6,6-tetramethylpiperidine 1-oxyl; TEMPO) at room temperature and aerobic conditions. The multifold advantages of the catalyst both in terms of reduced catalyst loading and ambient temperature conditions were manifested by higher conversion of the starting material.
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Affiliation(s)
- Afnan Al-Hunaiti
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan;
| | - Asma Ghazzy
- Department of Chemistry, Al-Ahliyya Amman University, Amman 19328, Jordan;
| | - Nuha Sweidan
- Department of Chemistry, University of Petra, Amman 11196, Jordan;
| | - Qassem Mohaidat
- Department of Physics, Yarmouk University, Irbid 21163, Jordan;
| | - Ibrahim Bsoul
- Department of Physics, Al Al-Bayt University, Mafraq 13040, Jordan;
| | - Sami Mahmood
- Department of Physics, The University of Jordan, Amman 11942, Jordan;
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
| | - Tareq Hussein
- Department of Physics, The University of Jordan, Amman 11942, Jordan;
- Institute for Atmospheric and Earth System Research (INAR/Physics), University of Helsinki, FI-00014 Helsinki, Finland
- Correspondence: or
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Preparation and Characterization of Sustained-Release Naringin Coating on Magnesium Surface. COATINGS 2021. [DOI: 10.3390/coatings11030288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Given the three-dimensional multi-level structure of natural bone and the multi-factor time-shifting effect in the healing process after bone trauma, there are plans to introduce drug-controlled release systems into the treatment of orthopedic diseases. To achieve multi-level loading and controlled release of biologically active substances, it is necessary to create synergistic behavior between biological factors, thereby improving the bone regeneration ability of artificial bone replacement materials. A naringin-loaded (NG) coating was prepared, compared with ultrasonic micro-arc oxidation (UMAO). The coating was characterized by X-ray diffraction, infrared spectroscopy, and scanning electron microscopy. The corrosion resistance of the coating was studied through the wetting angle and polarization curve. The high-performance liquid chromatography method was used to test the release of the drug. It can be seen from the experimental results that the NG coating has a larger wetting angle and better corrosion resistance. In addition, the NG coating produces more apatite substances and has good biological activity. The NG coatings can stimulate the natural bone regeneration and repair process by releasing drugs during the process, which can effectively promote bone regeneration and repair after implantation in the body.
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Fierascu RC, Fierascu I, Ortan A, Paunescu A. Plantago media L.-Explored and Potential Applications of an Underutilized Plant. PLANTS (BASEL, SWITZERLAND) 2021; 10:265. [PMID: 33573139 PMCID: PMC7912141 DOI: 10.3390/plants10020265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 01/24/2023]
Abstract
The search of valuable natural compounds should be directed towards alternative vegetal resources, and to the re-discovery of underutilized plants. Belonging to the Plantaginaceae family, the hoary plantain (Plantago media L.) represents one of the lesser studied species from the Plantago genus. The literature study revealed the under-utilization of the hoary plantain, a surprising aspect, considering its widespread. If the composition of Plantago media L. is rather well established, its applications are not nearly studied as for other Plantago species. The goal of the present paper is to summarize the findings regarding the applications of P. media, and, having as starting point the applications of related species, to propose new emerging areas of research, such as the biomedical applications validation through in vivo assays, and the evaluation of its potential towards industrial applications (i.e., development of food or personal care products), pisciculture or zootechny, phytoremediation and other environmental protection applications, or in the nanotechnology area (materials phytosynthesis). The present work constitutes not only a brief presentation of this plant's present and potential applications, but also an invitation to research groups world-wide to explore the available vegetal resources.
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Affiliation(s)
- Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| | - Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania;
- University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania;
| | - Alina Ortan
- University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania;
| | - Alina Paunescu
- Department of Natural Sciences, University of Pitesti, 1 Targu din Vale Str., Pitesti, 110040 Arges, Romania;
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Kowsalya E, MosaChristas K, Balashanmugam P, Manivasagan V, Devasena T, Jaquline CRI. Sustainable use of biowaste for synthesis of silver nanoparticles and its incorporation into gelatin‐based nanocomposite films for antimicrobial food packaging applications. J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13641] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Elumalai Kowsalya
- Department of Plant Biology and Biotechnology Loyola College, University of Madras Chennai Tamil Nadu India
| | - Kithiyon MosaChristas
- Department of Plant Biology and Biotechnology Loyola College, University of Madras Chennai Tamil Nadu India
| | | | - Veerasamy Manivasagan
- Department of Biotechnology Adhiyamaan College of Engineering Hosur Tamil Nadu India
| | - Thiyagarajan Devasena
- Centre for Nanoscience and Nanotechnology A.C. Tech Campus, Anna University Chennai Tamil Nadu India
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Corrosion Behavior and Biological Activity of Micro Arc Oxidation Coatings with Berberine on a Pure Magnesium Surface. COATINGS 2020. [DOI: 10.3390/coatings10090837] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Bone tissue repair materials can cause problems such as inflammation around the implant, slow bone regeneration, and poor repair quality. In order to solve these problems, a coating was prepared by ultrasonic micro-arc oxidation and self-assembly technology on a pure magnesium substrate. We studied the effect of berberine on the performance of the ultrasonic micro-arc oxidation/polylactic acid and glycolic acid copolymer/berberine (UMAO/PLGA/BR) coating. The chemical and morphological character of the coating was analyzed using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The corrosion properties were studied by potentiodynamic polarization and electrochemical impedance spectroscopy in a simulated body fluid. The cumulative release of drugs was tested by high-performance liquid chromatography. The results indicate that different amounts of BR can seal the corrosion channel to different extents. These coatings have a self-corrosion current density (Icorr) at least one order of magnitude lower than the UMAO coatings. When the BR content is 3.0 g/L, the self-corrosion current density of the UMAO/PLGA/BR coatings is the lowest (3.14 × 10−8 A/cm2) and the corrosion resistance is improved. UMAO/PLGA/BR coatings have excellent biological activity, which can effectively solve the clinical problem of rapid degradation of pure magnesium and easy infection.
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Abstract
The objective of the present study is the valorization of natural resources and the recycling of vegetal wastes by converting them into novel plasmonic bio-active hybrids. Thus, a “green” approach was used to design pectin-coated bio-nanosilver. Silver nanoparticles were generated from two common garden herbs (Mentha piperita and Amaranthus retroflexus), and pectin was extracted from lemon peels. The samples were characterized by the following methods: Ultraviolet–visible (UV-Vis) absorption spectroscopy, Fourier Transform Infrared (FT-IR), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), dynamic light scattering (DLS), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM)–Energy-dispersive X-ray Spectroscopy (EDX), and zeta potential measurements. Microscopic investigations revealed the spherical shape and the nano-scale size of the prepared biohybrids. Their bioperformances were checked in terms of antioxidant and antibacterial activity. The developed plasmonic materials exhibited a strong ability to scavenge short-life (96.1% ÷ 98.7%) and long-life (39.1% ÷ 91%) free radicals. Microbiological analyses demonstrated an impressive antibacterial effectiveness of pectin-based hybrids against Escherichia coli. The results are promising, and the obtained biomaterials could be used in many bio-applications, especially as antioxidant and antimicrobial biocoatings.
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Synthesis, radical scavenging, and antimicrobial activities of core–shell Au/Ni microtubes. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01066-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Selected Aspects Regarding the Restoration/Conservation of Traditional Wood and Masonry Building Materials: A Short Overview of the Last Decade Findings. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10031164] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Vernacular buildings are usually constructed using materials at hand, including wood, natural stone and bricks (either clay or mud bricks). All those materials are exposed to a series of environmental factors, affecting their structure and integrity. The literature review was conducted using different databases (Scopus, Web of Science, ScienceDirect, SpringerLink) using as keywords the historical material, “heritage” and the terms regarding the desired effect, within the envisaged time period (2010–2019). The assessment of the results was performed by manual inspection (reading the entire article) and the selection of the works to be inserted in the current review was made by evaluating the contribution to the field. This review summarizes different aspects related to the restoration and conservation of wooden and masonry elements of traditional buildings, including materials used for biocidal interventions, protection against abiotic factors, cleaning and consolidation agents. Finally, a critical discussion regarding the current limitations and future perspectives concludes the review work, envisaging the role of researchers specialized in materials science in the context of cultural heritage conservation.
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Efficiency of Novel Antimicrobial Coating Based on Iron Nanoparticles for Dairy Products’ Packaging. COATINGS 2020. [DOI: 10.3390/coatings10020156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The main function of food packaging is to maintain food’s quality and safety. The use of active packaging, including antimicrobial materials, can significantly extend the shelf life of food. Many of these packaging solutions are based on the application of polymer films containing metal nanoparticles (e.g., Ag, Au, Cu) or metal oxides (e.g., TiO2, ZnO, MgO). However, the use of iron nanoparticles is rarely mentioned. In the study, polylactide (PLA) films containing zero-valent iron (ZVI) were made by casting method. Pure PLA films and PLA films with the addition of Fe2O3 were used as comparative materials. The composition and structure of ZVI/PLA films were evaluated with scanning electron microscopy. The XRD spectra performed on ZVI/PLA films confirmed the presence of iron in the packaging material and revealed their oxide form (Fe2O3). The addition of zero-valent iron in the concentration 1%, 3%, or 5% resulted in the formation of crystallographic planes measuring 40.8, 33.6, and 28.6 nm, respectively. The color and gloss of the films, and their antimicrobial activity against bacteria (Bacillus subtilis, Escherichia coli, Staphylococcus epidermidis) and fungi (Geotrichum candidum, Rhodotorula rubra) were also examined. The PLA films with addition of 3% of ZVI (w/w) inhibited the growth of all tested organisms in contrast to PLA and PLA/Fe2O3 films. The addition of ZVI to polymer matrix caused changes in its appearance and optical properties. The ZVI/PLA coating used on polyolefin film allowed to extend the shelf life of goat cheese packed in examined material to 6 weeks. Considering the antimicrobial properties of the ZVI/PLA films and PLA biodegradability the obtained material can be successfully applied in the food industry.
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Fierascu I, Fierascu IC, Brazdis RI, Baroi AM, Fistos T, Fierascu RC. Phytosynthesized Metallic Nanoparticles-between Nanomedicine and Toxicology. A Brief Review of 2019's Findings. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E574. [PMID: 31991830 PMCID: PMC7040630 DOI: 10.3390/ma13030574] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 01/19/2020] [Accepted: 01/22/2020] [Indexed: 02/07/2023]
Abstract
Phytosynthesized nanoparticles represent a continuously increasing field of research, with numerous studies published each year. However, with the emerging interest in this area, the quality of the published works is also continuously increasing, switching from routine antioxidant or antimicrobial studies on trivial microbial lines to antibiotic-resistant strains or antitumoral studies. However, this increasing interest has not been not reflected in the studies regarding the toxicological effects of nanoparticles (NPs); this should be a subject of greatest interest, as the increasing administration of NPs in general (and phytosynthesized NPs in particular) could lead to their accumulation in the environment (soil, water and living organisms). The present review aims to present the most recent findings in the application of phytosynthesized NPs as antimicrobial and antitumoral agents, as well as the results regarding their toxicological potential.
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Affiliation(s)
- Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, Emerging Nanotechnologies Group, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.F.); (R.I.B.); (A.M.B.); (T.F.)
| | - Ioana Catalina Fierascu
- University of Medicine and Pharmacy “Carol Davila”, 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Zentiva Romania S.A., 50 Theodor Pallady Blvd., 032266 Bucharest, Romania
| | - Roxana Ioana Brazdis
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, Emerging Nanotechnologies Group, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.F.); (R.I.B.); (A.M.B.); (T.F.)
| | - Anda Maria Baroi
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, Emerging Nanotechnologies Group, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.F.); (R.I.B.); (A.M.B.); (T.F.)
| | - Toma Fistos
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, Emerging Nanotechnologies Group, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.F.); (R.I.B.); (A.M.B.); (T.F.)
| | - Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, Emerging Nanotechnologies Group, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.F.); (R.I.B.); (A.M.B.); (T.F.)
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16
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Fragaria Genus: Chemical Composition and Biological Activities. Molecules 2020; 25:molecules25030498. [PMID: 31979351 PMCID: PMC7037259 DOI: 10.3390/molecules25030498] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/19/2020] [Accepted: 01/22/2020] [Indexed: 12/19/2022] Open
Abstract
The strawberries represent in our days one of the main fresh fruits consumed globally, inevitably leading to large amounts of by-products and wastes. Usually appreciated because of their specific flavor, the strawberries also possess biological properties, including antioxidant, antimicrobial, or anti-inflammatory effects. In spite of the wide spread of the Fragaria genus, few species represent the subject of the last decade scientific research. The main components identified in the Fragaria species are presented, as well as several biological properties, as emerging from the scientific papers published in the last decade.
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