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Piyathilake U, Lin C, Bolan N, Bundschuh J, Rinklebe J, Herath I. Exploring the hidden environmental pollution of microplastics derived from bioplastics: A review. CHEMOSPHERE 2024; 355:141773. [PMID: 38548076 DOI: 10.1016/j.chemosphere.2024.141773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/16/2024] [Accepted: 03/21/2024] [Indexed: 04/18/2024]
Abstract
Bioplastics might be an ecofriendly alternative to traditional plastics. However, recent studies have emphasized that even bioplastics can end up becoming micro- and nano-plastics due to their degradation under ambient environmental conditions. Hence, there is an urgent need to assess the hidden environmental pollution caused by bioplastics. However, little is known about the evolutionary trends of bibliographic data, degradation pathways, formation, and toxicity of micro- and nano-scaled bioplastics originating from biodegradable polymers such as polylactic acid, polyhydroxyalkanoates, and starch-based plastics. Therefore, the prime objective of the current review was to investigate evolutionary trends and the latest advancements in the field of micro-bioplastic pollution. Additionally, it aims to confront the limitations of existing research on microplastic pollution derived from the degradation of bioplastic wastes, and to understand what is needed in future research. The literature survey revealed that research focusing on micro- and nano-bioplastics has begun since 2012. This review identifies novel insights into microbioplastics formation through diverse degradation pathways, including photo-oxidation, ozone-induced degradation, mechanochemical degradation, biodegradation, thermal, and catalytic degradation. Critical research gaps are identified, including defining optimal environmental conditions for complete degradation of diverse bioplastics, exploring micro- and nano-bioplastics formation in natural environments, investigating the global occurrence and distribution of these particles in diverse ecosystems, assessing toxic substances released during bioplastics degradation, and bridging the disparity between laboratory studies and real-world applications. By identifying new trends and knowledge gaps, this study lays the groundwork for future investigations and sustainable solutions in the realm of sustainable management of bioplastic wastes.
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Affiliation(s)
- Udara Piyathilake
- Environmental Science Division, National Institute of Fundamental Studies (NIFS), Kandy, 2000, Sri Lanka
| | - Chuxia Lin
- Centre for Regional and Rural Futures, Faculty of Science, Engineering and Built Environment, Deakin University, Burwood, VIC, 3125, Australia
| | - Nanthi Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, Western Australia, 6009, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, Western Australia, 6009, Australia
| | - Jochen Bundschuh
- School of Engineering, Faculty of Health, Engineering and Sciences, The University of Southern Queensland, West Street, 4350, QLD, Australia
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany
| | - Indika Herath
- Centre for Regional and Rural Futures, Faculty of Science, Engineering and Built Environment, Deakin University, Waurn Ponds, VIC, 3216, Australia.
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2
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Xie D, Zhang R, Song S, Yang S, Yang A, Zhang C, Song Y. Nacre-inspired starch-based bioplastic with excellent mechanical strength and electromagnetic interference shielding. Carbohydr Polym 2024; 331:121888. [PMID: 38388042 DOI: 10.1016/j.carbpol.2024.121888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/19/2024] [Accepted: 01/27/2024] [Indexed: 02/24/2024]
Abstract
Bioplastics have aroused significant interest in researchers to relieve the serious environmental pollution caused by the ubiquity of petroleum-based plastics. However, it remains a great challenge to construct functional bioplastics with excellent mechanical strength, water resistance, and heat resistance. Inspired by the interesting structure of nacre, a novel starch-based bioplastic was prepared via a self-assembly technique, using 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers modified starch, nano-montmorillonite, and reduced graphene oxide as raw materials. Due to the unique layered structure and rich interfacial interaction, the starch-based bioplastic exhibited excellent mechanical properties, while the tensile strength was up to 37.39 MPa. Furthermore, it represented outstanding water resistance, heat resistance, repairability, renewability and biodegradability. Especially, the starch-based bioplastic demonstrated a strong electromagnetic interference shielding effectiveness (EMI SE), which was higher than 35 dB with a thickness of 0.5 mm. These powerful properties provided the possibility for functional applications of starch-based bioplastics.
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Affiliation(s)
- Di Xie
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Rui Zhang
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Shanshan Song
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Siwen Yang
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - An Yang
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Congcong Zhang
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Yongming Song
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China; College of Home and Art Design, Northeast Forestry University, Harbin 150040, China.
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3
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Chandrasekar CM, Nespoli L, Bellesia T, Ghaani M, Farris S, Romano D. Fabrication of double layer nanoparticle infused starch-based thermoplastic food packaging system for meat preservation. Int J Biol Macromol 2024; 254:127689. [PMID: 37918611 DOI: 10.1016/j.ijbiomac.2023.127689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/11/2023] [Accepted: 10/24/2023] [Indexed: 11/04/2023]
Abstract
The current work aims to produce nanoparticle-infused starch-based bioactive thermoplastic packaging films. The FeO and ZnO nanoparticles were examined to be potential active ingredients for the production of nanoparticle-infused bioactive thermoplastic packaging films. The bio-thermoplastic films infused with FeO and ZnO nanoparticles showed high oxygen scavenging and antimicrobial activity, respectively. Consecutively, both films were combined to form a double-layer Nano-Biothermoplastic packaging system for food preservation. The distribution and diffusion of nanoparticles in starch-based films were examined to be influenced by the amorphous character of starch and the swelling index of the film, respectively. The amorphous property of starch molecules showed a masking effect on the crystalline characteristics of nanoparticles in Nano-Biothermoplastic films. The diffusion of nanoparticles from the Nano-Biothermoplastic packaging system was found to influence the microbial, chemical, and color characteristics of mutton and chicken meat stored at 4 °C.
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Affiliation(s)
| | - Luca Nespoli
- Department of Food Environmental and Nutritional Sciences, University of Milan, Italy
| | - Tommaso Bellesia
- Department of Food Environmental and Nutritional Sciences, University of Milan, Italy
| | - Masoud Ghaani
- Department of Food Environmental and Nutritional Sciences, University of Milan, Italy
| | - Stefano Farris
- Department of Food Environmental and Nutritional Sciences, University of Milan, Italy
| | - Diego Romano
- Department of Food Environmental and Nutritional Sciences, University of Milan, Italy
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4
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Xie D, Zhang R, Zhang C, Yang S, Xu Z, Song Y. A novel, robust mechanical strength, and naturally degradable double crosslinking starch-based bioplastics for practical applications. Int J Biol Macromol 2023; 253:126959. [PMID: 37739289 DOI: 10.1016/j.ijbiomac.2023.126959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/27/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
The increasing number of petroleum-based plastics has caused severe environmental pollution, which has attracted great research interest in the development of low-cost, renewable, and degradable starch-based bioplastics. However, developing starch-based bioplastics with robust mechanical strength, excellent water resistance, and thermal resistance remains a great challenge. In this study, we presented a simple and efficient method for preparing high-performance novel starch-based bioplastics with chemical and physical double crosslinking network structures filled with 2,2,6,6-tetramethylpiperidine 1-oxy-oxidized cellulose nanofibers and zinc oxide nanoparticles. Compared with pure starch-based bioplastics, the tensile strength of the novel robust strength starch-based bioplastics increased by 431.2 %. The novel starch-based bioplastics exhibited excellent mechanical properties (tensile strength up to 24.54 MPa), water resistance, thermal resistance, and biodegradability. In addition, the novel starch-based bioplastics could be reused, crushed, dissolved, and re-poured after use. After recycling, the novel starch-based bioplastics could be discarded in the soil to achieve complete degradation within six weeks. Owing to these characteristics, the novel starch-based bioplastics are good alternatives used to replace traditional petroleum-based plastics and have great development prospects.
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Affiliation(s)
- Di Xie
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, PR China
| | - Rui Zhang
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, PR China
| | - Congcong Zhang
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, PR China
| | - Siwen Yang
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, PR China
| | - Zesheng Xu
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, PR China
| | - Yongming Song
- Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, PR China.
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5
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Hejna A, Barczewski M, Kosmela P, Mysiukiewicz O, Aniśko J, Sulima P, Andrzej Przyborowski J, Reza Saeb M. The impact of thermomechanical and chemical treatment of waste Brewers' spent grain and soil biodegradation of sustainable Mater-Bi-Based biocomposites. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 154:260-271. [PMID: 36279594 DOI: 10.1016/j.wasman.2022.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/16/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Due to the massive plastic pollution, development of sustainable and biodegradable polymer materials is crucial to reduce environmental burdens and support climate neutrality. Application of lignocellulosic wastes as fillers for polymer composites was broadly reported, but analysis of biodegradation behavior of resulting biocomposites was rarely examined. Herein, sustainable Mater-Bi-based biocomposites filled with thermomechanically- and chemically-modified brewers' spent grain (BSG) were prepared and subjected to 12-week soil burial test simulating their biodegradation in natural environment. BSG stabilizing effect on polymer matrix affected by the content of melanoidins and antioxidant phytochemicals, along with the impact of diisocyanate applied to strengthen the interfacial adhesion. Biocomposites showed 25-35 wt% mass loss over 12 weeks resulting from swelling of BSG filler and sample microcracking, which increased surface roughness by 247-448 %. The degree of decomposition was partially reduced by BSG modifications pointing to the stabilizing effect of melanoidins and phytochemicals, and enhanced interfacial adhesion. Soil burial-induced structural changes enhanced biocomposites' thermal stability determined by thermogravimetric analysis shifting decomposition onset by 14.4-32.0 °C due to the biodegradation of lower molecular weight starch macromolecules confirmed by differential scanning calorimetry. For unfilled Mater-Bi, it caused an average 32 % reduction in complex viscosity and storage modulus captured by oscillatory rheological measurements. Nonetheless, the inverse effect was noted for biocomposites where modulus increased even by one order of magnitude due to the swelling of BSG particles and amorphous phase decomposition. Presented results indicate that BSG promotes soil degradation of Mater-Bi and its rate can be engineered by biofiller treatment elaboration.
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Affiliation(s)
- Aleksander Hejna
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland; Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12 80-233, Gdańsk, Poland.
| | - Mateusz Barczewski
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
| | - Paulina Kosmela
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12 80-233, Gdańsk, Poland
| | - Olga Mysiukiewicz
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
| | - Joanna Aniśko
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
| | - Paweł Sulima
- Department of Genetics, Plant Breeding and Bioresource Engineering, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-724 Olsztyn, Poland
| | - Jerzy Andrzej Przyborowski
- Department of Genetics, Plant Breeding and Bioresource Engineering, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-724 Olsztyn, Poland
| | - Mohammad Reza Saeb
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12 80-233, Gdańsk, Poland
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6
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Hejna A, Barczewski M, Kosmela P, Mysiukiewicz O, Sulima P, Przyborowski JA, Kowalkowska-Zedler D. Mater-Bi/Brewers' Spent Grain Biocomposites-Novel Approach to Plant-Based Waste Filler Treatment by Highly Efficient Thermomechanical and Chemical Methods. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15207099. [PMID: 36295167 PMCID: PMC9605683 DOI: 10.3390/ma15207099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/28/2022] [Accepted: 10/10/2022] [Indexed: 05/27/2023]
Abstract
Thermoplastic starch (TPS) is a homogenous material prepared from native starch and water or other plasticizers subjected to mixing at a temperature exceeding starch gelatinization temperature. It shows major drawbacks like high moisture sensitivity, poor mechanical properties, and thermal stability. To overcome these drawbacks without significant cost increase, TPS could be blended with bio-based or biodegradable polymers and filled with plant-based fillers, beneficially waste-based, like brewers' spent grain (BSG), the main brewing by-product. Filler modifications are often required to enhance the compatibility of such composites. Herein, we investigated the impact of BSG thermomechanical and chemical treatments on the structure, physical, thermal, and rheological performance of Mater-Bi-based composites. Thermomechanical modifications enhanced matrix thermal stability under oxidative conditions delaying degradation onset by 33 °C. Moreover, BSG enhanced the crystallization of the polybutylene adipate terephthalate (PBAT) fraction of Mater-Bi, potentially improving mechanical properties and shortening processing time. BSG chemical treatment with isophorone diisocyanate improved the processing properties of the composites, expressed by a 33% rise in melt flow index. Depending on the waste filler's selected treatment, processing, and rheological performance, thermal stability or interfacial adhesion of composites could be enhanced. Moreover, the appearance of the final materials could be adjusted by filler selection.
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Affiliation(s)
- Aleksander Hejna
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Mateusz Barczewski
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
| | - Paulina Kosmela
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Olga Mysiukiewicz
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland
| | - Paweł Sulima
- Department of Genetics, Plant Breeding and Bioresource Engineering, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-724 Olsztyn, Poland
| | - Jerzy Andrzej Przyborowski
- Department of Genetics, Plant Breeding and Bioresource Engineering, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-724 Olsztyn, Poland
| | - Daria Kowalkowska-Zedler
- Department of Inorganic Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
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7
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More PR, Pegu K, Arya SS. Development and characterization of taro starch-casein composite bioactive films functionalized by micellar pomegranate peel extract (MPPE). Int J Biol Macromol 2022; 220:1060-1071. [PMID: 36027986 DOI: 10.1016/j.ijbiomac.2022.08.147] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 08/12/2022] [Accepted: 08/22/2022] [Indexed: 11/19/2022]
Abstract
Starch-casein composite (solid matter content) based bioactive films incorporated with micellar pomegranate peel extract (MPPE) at different concentrations (10, 25, 50, and 100 wt% with respect to base solid matter content) were developed. The extract-free film was used as a control. The bioactive films were characterized for physicochemical, mechanical, barrier, structural, thermal, and bioactive properties. Decreased ζ-potential and surface tension, increased particle size, and improved rheological properties of MPPE added film-forming dispersion (FFD) were recorded. Among all the physical properties of bioactive films, only contact angle was reduced. An increase in MPPE concentration exhibited less hardness, more extensibility, and an excellent barrier to water vapor permeability than the control film. Increased MPPE concentration showed a decline in transparency (%) and lightness (L*) resulting into distinct color to the film. Structural compactness and integrity of the films were confirmed by SEM and XRD patterns. Improved functional interaction and thermal reliability of bioactive films were noted. The interaction patterns between starch-casein composite and MPPE bioactives indicated the development of covalent links. Excellent bioactivities with the slow release of bioactives in hydroalcoholic environment, confirmed by the kinetic study. Remarkable antibacterial effect was noted against E. coli and S. aureus by the films. Overall, increasing the concentration of MPPE in bioactive film showed improved physicochemical strength; hence, prepared bioactive films could be used as food coatings.
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Affiliation(s)
- Pavankumar R More
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, Maharashtra 400019, India
| | - Kakoli Pegu
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, Maharashtra 400019, India
| | - Shalini S Arya
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, Maharashtra 400019, India.
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8
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Reinforcement of starch film with Castanea sativa shells polysaccharides: Optimized formulation and characterization. Food Chem 2022; 396:133609. [PMID: 35839721 DOI: 10.1016/j.foodchem.2022.133609] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/03/2022] [Accepted: 06/28/2022] [Indexed: 11/21/2022]
Abstract
Chestnut (Castanea sativa) shells, generated from the peeling process of the fruit, contains appreciable amounts of lignin and cellulose. In this work, a starch-based film reinforced with these polysaccharides was developed. Response Surface Methodology was employed to optimize the composition of the film with improved elongation, tensile strength, and elasticity modulus properties. The optimal film was characterized regarding structural, optical barrier and thermal properties. The optimum composition was obtained with 10% (w/w) fibers and 50% (w/w) glycerol; the elongation responses, tensile strength and modulus of elasticity reached values of 34.19%, 7.31 N and 4.15 N, respectively. The values of tension strength and modulus of elasticity were approximately 3.5 times higher than those obtained for the control film. The reinforced film was opaque and exhibited improved water solubility, UV-barrier capacity, and thermal stability compared to control. The optimized starch film based on chestnut shells fibers' has the potential to produce biodegradable food packaging with improved properties.
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9
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Senthilnathan K, Muthusamy S. Optimal Process Condition (
UV‐C
): Quantitative Findings on the Mineral profile, Bio‐active profile, & changes in the quality attributes of fresh microgreen juice. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Sukumar Muthusamy
- Centre for Food Technology, A.C.Tech Anna University Chennai Tamilnadu India
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Abstract
The food packaging sector generates large volumes of plastic waste due to the high demand for packaged products with a short shelf-life. Biopolymers such as starch-based materials are a promising alternative to non-renewable resins, offering a sustainable and environmentally friendly food packaging alternative for single-use products. This article provides a chronology of the development of starch-based materials for food packaging. Particular emphasis is placed on the challenges faced in processing these materials using conventional processing techniques for thermoplastics and other emerging techniques such as electrospinning and 3D printing. The improvement of the performance of starch-based materials by blending with other biopolymers, use of micro- and nano-sized reinforcements, and chemical modification of starch is discussed. Finally, an overview of recent developments of these materials in smart food packaging is given.
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Fabrication and characterization of an economical active packaging film based on chitosan incorporated with pomegranate peel. Int J Biol Macromol 2021; 192:1160-1168. [PMID: 34678378 DOI: 10.1016/j.ijbiomac.2021.10.064] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/04/2021] [Accepted: 10/09/2021] [Indexed: 01/14/2023]
Abstract
Antioxidant and antimicrobial chitosan (CS) films incorporated with different concentrations (0, 3, 6 and 9% w/w based on chitosan) of pomegranate peel powder (PPP) were prepared through a simple and low-cost process and characterized. The physicochemical property, antioxidant and antibacterial properties of the films were investigated. Results showed that incorporation with PPP increased the thickness, water solubility (WS), water vapor permeability (WVP), opacity and total phenolic content (TPC) of chitosan films, but decreased the moisture content (MC) and mechanical property. Fourier transform infrared (FTIR) spectroscopy indicated the formation of hydrogen bonds between chitosan and PPP. In addition, scanning electron microscopy (SEM) analysis presented that microstructural attributes of chitosan film changed by enriching with pomegranate peel. The films with concentrations of PPP at 6 and 9% presented great ultraviolet-visible light barrier properties. Moreover, the antioxidant ability of films with PPP was significantly increased compared to the chitosan film. The addition of PPP also promoted the antibacterial capacity of the control film. These results revealed that incorporation of PPP in chitosan film could fabricate an economical active film with antioxidant and antibacterial properties, and which had the potential for developing food-grade packaging material.
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12
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Zhang H, Sablani S. Biodegradable packaging reinforced with plant-based food waste and by-products. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2021.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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13
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Cui C, Ji N, Wang Y, Xiong L, Sun Q. Bioactive and intelligent starch-based films: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.08.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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Henning FG, Ito VC, Demiate IM, Lacerda LG. Non-conventional starches for biodegradable films: A review focussing on characterisation and recent applications in food. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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15
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Zhu X, Luo Z, Zhu X. Novel insights into the enrichment of phenols from walnut shell pyrolysis loop: Torrefaction coupled fractional condensation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 131:462-470. [PMID: 34271394 DOI: 10.1016/j.wasman.2021.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/14/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Enriching high-value chemicals from the pyrolysis of agricultural and forestry waste is an efficient way to achieve sustainable development and large-scale application of biomass pyrolysis. Phenols, as important chemical raw materials, spices and food additives, have attracted widespread attention. Herein, a novel technical route of torrefaction pretreatment combined with fractional condensation in pyrolysis loop was proposed to enrich the phenols in liquid products. In this study, the enrichment of phenols from the pyrolysis loop of walnut shell under the combination of torrefaction and fractional condensation was explored using a fixed-bed pyrolysis reactor equipped with a three-stage condensation system. Simultaneously, the effects of torrefaction on feedstocks were investigated through a thermogravimetric analyzer based on the characteristics of feedstocks. The results showed that the torrefaction and pyrolysis loop had a negative impact on the pyrolysis efficiency and the yield of liquid products, while the change in the condensation efficiency depended on the combined effects of torrefaction and pyrolysis loop. In addition, phenols tended to be enriched in the second condensation stage, especially phenol, o-cresol, 4-ethylphenol. Importantly, torrefaction could significantly enrich phenols in the liquid products, and the enrichment of phenols is relatively increased by 109.44% at least. Moreover, the pyrolysis loop was also beneficial to the enrichment of phenols, which was at least 90% higher than that of walnut shell. This study provided a potential route to enrich high value-added products from the pyrolysis loop of lignocellulosic biomass.
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Affiliation(s)
- Xiefei Zhu
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Zejun Luo
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xifeng Zhu
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China.
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16
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El-Shamy S, Farag MA. Novel trends in extraction and optimization methods of bioactives recovery from pomegranate fruit biowastes: Valorization purposes for industrial applications. Food Chem 2021; 365:130465. [PMID: 34243129 DOI: 10.1016/j.foodchem.2021.130465] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 12/11/2022]
Abstract
Pomegranate biowastes present potential economic value worldwide owing to their several health benefits mediated by a complex mixture of unique bioactives. The exploitation of these bioactives has motivated the exploration of eco-friendly, efficient, and cost-effective extraction techniques to maximize their recovery. The current review aims to provide updated technical information about bioactives extraction mechanisms from pomegranate wastes (seeds and peel), their advantages and disadvantages, and factors towards optimization. A comparative overview of the modern green extraction techniques viz., supercritical fluid extraction, ultrasound-assisted extraction, microwave-assisted extraction, pressurized liquid extraction, and eutectic solvent mixture as alternatives to conventional extraction methods for seeds and peel is presented. Approaches focused on biowastes modification for properties improvement are also discussed. Such comprehensive review shall provide the best valorization practices of pomegranate biowastes and its application in food and non-food areas focusing on original methods, innovation, protocols, and development to be considered for other fruit biowastes.
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Affiliation(s)
- Sherine El-Shamy
- Pharmacognosy Department, Faculty of Pharmacy, Modern University for Technology & Information, Cairo, Egypt
| | - Mohamed A Farag
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt; Chemistry Department, School of Sciences & Engineering, The American University in Cairo, New Cairo 11835, Egypt.
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17
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Zibaei R, Hasanvand S, Hashami Z, Roshandel Z, Rouhi M, Guimarães JDT, Mortazavian AM, Sarlak Z, Mohammadi R. Applications of emerging botanical hydrocolloids for edible films: A review. Carbohydr Polym 2020; 256:117554. [PMID: 33483057 DOI: 10.1016/j.carbpol.2020.117554] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 11/28/2022]
Abstract
In recent years, many studies have been conducted on the production of edible films from emerging gums, which are mostly made from botanical sources. However, each one interacts differently with the film compounds, producing films with different properties that may improve or hinder their utilization in food packaging. Therefore, the aim of this review was to investigate and compare the physical, mechanical, thermal and structural properties of edible films produced with these emerging gums. The results of this review showed that it is possible to produce edible films with desirable physical, mechanical and thermal properties by optimizing the amounts and type of compounds in film formulations such as plasticizers, nanoparticles, lipid compounds, crosslinkers and combination of gums with other biopolymers. The future trends of this research include the deepening of knowledge to understand the molecular structures of emerging gums and to address the shortcomings of films based on these gums for their industrial-scale application in food packaging.
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Affiliation(s)
- Rezvan Zibaei
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sara Hasanvand
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Hashami
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Roshandel
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Milad Rouhi
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Jonas de Toledo Guimarães
- Department of Food Technology, Faculty of Veterinary Medicine, Federal Fluminense University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Amir Mohammad Mortazavian
- Department of Food Technology, Faculty of Nutrition Sciences and Food Technology/National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Sarlak
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Mohammadi
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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18
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Metal oxide-cellulose nanocomposites for the removal of toxic metals and dyes from wastewater. Int J Biol Macromol 2020; 164:2477-2496. [DOI: 10.1016/j.ijbiomac.2020.08.074] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 02/07/2023]
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19
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Harini K, Chandra Mohan C. Isolation and characterization of micro and nanocrystalline cellulose fibers from the walnut shell, corncob and sugarcane bagasse. Int J Biol Macromol 2020; 163:1375-1383. [PMID: 32750484 DOI: 10.1016/j.ijbiomac.2020.07.239] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/16/2020] [Accepted: 07/22/2020] [Indexed: 11/29/2022]
Abstract
The present study aims to extract and characterize the microcrystalline cellulose (MCC) present in different agro-industrial wastes such as walnut shells, corncob, and sugarcane bagasse. Moreover, it is also the aim of this study to convert MCCs to nanocrystalline cellulose fiber (NCCF), to demonstrate the difference in morphological, structural, thermal, and chemical natures. Corncob cellulose was observed to possess a loosely bounded linear bundle structure. Nanocrystalline cellulose fiber yield from walnut shell and sugarcane bagasse cellulose were higher than corncob cellulose. The thermal stability of cellulose was noted to be high for walnut shell NCCF. Nanocrystalline cellulose fiber of corncob and sugarcane bagasse was estimated to have a low thermal degradation temperature. All the MCCs and NCCFs produced from investigated cellulose sources were found to have type I cellulose. Functional group compositions of cellulose were observed to be intact for converted agro-based NCCF's.
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Affiliation(s)
- K Harini
- Centre for Food Technology, Anna University, Sardar Patel Road, Guindy, Chennai 600025, Tamilnadu, India.
| | - C Chandra Mohan
- Centre for Food Technology, Anna University, Sardar Patel Road, Guindy, Chennai 600025, Tamilnadu, India
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20
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Wang L, Lin L, Guo Y, Long J, Mu RJ, Pang J. Enhanced functional properties of nanocomposite film incorporated with EGCG-loaded dialdehyde glucomannan/gelatin matrix for food packaging. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105863] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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21
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Freitas PA, Silva RR, de Oliveira TV, Soares RR, Junior NS, Moraes AR, Pires ACDS, Soares NF. Development and characterization of intelligent cellulose acetate-based films using red cabbage extract for visual detection of volatile bases. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109780] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Villasante J, Martin-Lujano A, Almajano MP. Characterization and Application of Gelatin Films with Pecan Walnut and Shell Extract ( Carya illinoiensis). Polymers (Basel) 2020; 12:E1424. [PMID: 32604735 PMCID: PMC7362019 DOI: 10.3390/polym12061424] [Citation(s) in RCA: 5] [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: 06/01/2020] [Revised: 06/21/2020] [Accepted: 06/23/2020] [Indexed: 11/19/2022] Open
Abstract
Phenolic compounds that come from natural products are a good option for minimizing lipid oxidation. It should be noted that these are not only introduced directly into the food, but also incorporated into edible biofilms. In contact with food, they extend its useful life by avoiding contact with other surface and preventing deterioration air, one of the main objectives. In particular, gelatin is a biopolymer that has a great potential due to its abundance, low cost and good film-forming capacity. The aim of this study has been to design and analyse gelatin films that incorporate bioactive compounds that come from the walnut and a by-product, the walnut shell. The results showed that mechanical and water vapor barrier properties of the developed films varied depending on the concentration of the walnut, shell and synthetic antioxidant. With increasing walnut concentration (15%) the permeability to water vapor (0.414 g·mm/m2·day·Pascal, g·mm/m2·day·Pa) was significantly lower than the control (5.0368 g·mm/m2·day·Pa). Furthermore, in the new films the elongation at the break and Young's modulus decrease by six times with respect to the control. Films with pure gelatin cannot act as an antioxidant shield to prevent food oxidation, but adding pecan walnut (15% concentration) presents 30% inhibition of the DPPH stable radical. Furthermore, in the DSC, the addition of walnut (15 and 9% concentrations), showed the formation of big crystals; which could improve the thermal stability of gelatin films. The use of new gelatin films has shown good protection against the oxidation of beef patties, increasing the useful lifetime up to nine days, compared to the control (3-4 days), which opens up a big field to the commercialization of meat products with lower quantities of synthetic products.
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Affiliation(s)
| | | | - María Pilar Almajano
- Chemical Engineering Department, Universitat Politècnica de Catalunya, Av.Diagonal 647, 08028 Barcelona, Spain; (J.V.); (A.M.-L.)
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23
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Jahanban-Esfahlan A, Jahanban-Esfahlan R, Tabibiazar M, Roufegarinejad L, Amarowicz R. Recent advances in the use of walnut (Juglans regia L.) shell as a valuable plant-based bio-sorbent for the removal of hazardous materials. RSC Adv 2020; 10:7026-7047. [PMID: 35493920 PMCID: PMC9049835 DOI: 10.1039/c9ra10084a] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/03/2020] [Indexed: 12/11/2022] Open
Abstract
The effective use of agricultural by-products is definitely a major challenge in waste management. In the walnut fruit processing industry, large amounts of shells are produced as agricultural by-products and discarded or burned produced as fuel. Walnut (Juglans regia L.) is a valuable tree nut in the Juglandaceae family. The fruit is composed of four main parts: the kernel, the skin, the shell, and the husk. The importance of walnuts is mostly related to theirs valuable kernels. However, their shells are currently experiencing as much interest as their kernels due to the beneficial effects of the shells. In the past several years, walnut shell (WS) has been widely explored as a naturally inert plant-based biosorbent. In this review, we first highlight recent scientific literature regarding the development of adsorbents from WS in the form of carbon-based materials including unmodified/modified WS, and activated carbons (ACs). Next, we discuss the potential applications of WS-derived by-products as natural yet effective adsorbents for the removal of various hazardous materials including heavy metals (HMs), synthetic industrial dyes, and harmful chemicals. The effective use of agricultural by-products is definitely a major challenge in waste management.![]()
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Affiliation(s)
- Ali Jahanban-Esfahlan
- Nutrition Research Center
- Tabriz University of Medical Sciences
- Tabriz
- Iran
- Student Research Committee
| | - Rana Jahanban-Esfahlan
- Drug Applied Research Center
- Tabriz University of Medical Sciences
- Tabriz
- Iran
- Department of Medical Biotechnology
| | - Mahnaz Tabibiazar
- Biotechnology Research Center
- Tabriz University of Medical Sciences
- Tabriz
- Iran
- Department of Food Science
| | | | - Ryszard Amarowicz
- Department of Food Science
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences
- Olsztyn
- Poland
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24
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Gelatin-Based Antimicrobial Films Incorporating Pomegranate ( Punica granatum L.) Seed Juice by-Product. Molecules 2019; 25:molecules25010166. [PMID: 31906115 PMCID: PMC6982764 DOI: 10.3390/molecules25010166] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/24/2019] [Accepted: 12/27/2019] [Indexed: 11/30/2022] Open
Abstract
Pomegranate (Punica granatum L.) seed juice by-product (PSP) was added as reinforcing and antimicrobial agent to fish gelatin (FG) films as a promising eco-friendly active material for food packaging applications. A complete linkage analysis of polysaccharides in PSP showed xylan and cellulose as main components. This residue showed also high total phenolic content and antioxidant activity. Three formulations were processed by adding PSP to FG (0, 10, 30 wt. %) by the casting technique, showing films with 10 wt. % of PSP the best performance. The addition of PSP decreased elongation at break and increased stiffness in the FG films, particularly for 30 wt. % loading. A good compatibility between FG and PSP was observed by SEM. No significant (p < 0.05) differences were obtained for barrier properties to oxygen and water vapour permeability compared to the control with the incorporation of PSP, whereas water resistance considerably increased and transparency values decreased (p < 0.05). High thermal stability of films and inhibition against S. aureus were observed. The addition of PSP at 10 wt. % into FG was shown as a potential strategy to maintain the integrity of the material and protect food against lipid oxidation, reducing huge amounts of pomegranate and fish wastes.
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25
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Smaoui S, Hlima HB, Mtibaa AC, Fourati M, Sellem I, Elhadef K, Ennouri K, Mellouli L. Pomegranate peel as phenolic compounds source: Advanced analytical strategies and practical use in meat products. Meat Sci 2019; 158:107914. [PMID: 31437671 DOI: 10.1016/j.meatsci.2019.107914] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 12/16/2022]
Abstract
The growing demand for natural food preservatives has promoted investigations on their application for preserving perishable foods. Consequently, the meat market is demanding natural antioxidants, free of synthetic additives and able to diminish the oxidation processes in high-fat meat and meat products. In this context, the present review discuss the development of healthier and shelf stable meat products by the successful use of pomegranate peel extracts containing phenolics as natural preservative agent in meat and meat products. This paper carries out an exhaustive review of the scientific literature on the main active phenolic compounds of pomegranate peel identified and quantified by advances in the separation sciences and spectrometry, and its biological activities evaluation. Moreover, the impact of pomegranate peel use on the quality and oxidative stability of meat products is also evaluated. As natural preservative, pomegranate peel phenolics could improve stored meat products quality, namely instrumental color retaining, limitaion of microflora growth, retardation of lipid and protein oxidation.
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Affiliation(s)
- Slim Smaoui
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia.
| | - Hajer Ben Hlima
- Algae Biotechnology Unit, Biological Engineering Department, National School of Engineers of Sfax, University of Sfax, Sfax 3038, Tunisia
| | - Ahlem Chakchouk Mtibaa
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia
| | - Mariam Fourati
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia
| | - Imen Sellem
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia
| | - Khaoula Elhadef
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia
| | - Karim Ennouri
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia
| | - Lotfi Mellouli
- Laboratory of Microorganisms and Biomolecules, Center of Biotechnology of Sfax, Road of Sidi Mansour Km 6, P. O. Box 1177, 3018, University of Sfax, Tunisia
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26
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Soft hydrogel based on modified chitosan containing P. granatum peel extract and its nano-forms: Multiparticulate study on chronic wounds treatment. Int J Biol Macromol 2019; 135:407-421. [DOI: 10.1016/j.ijbiomac.2019.05.156] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 05/07/2019] [Accepted: 05/21/2019] [Indexed: 02/01/2023]
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27
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Andrade MA, Lima V, Sanches Silva A, Vilarinho F, Castilho MC, Khwaldia K, Ramos F. Pomegranate and grape by-products and their active compounds: Are they a valuable source for food applications? Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.02.010] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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28
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Harini K, Sukumar M. Development of cellulose-based migratory and nonmigratory active packaging films. Carbohydr Polym 2019; 204:202-213. [DOI: 10.1016/j.carbpol.2018.10.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/05/2018] [Accepted: 10/06/2018] [Indexed: 11/15/2022]
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29
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Harini K, Ramya K, Sukumar M. Extraction of nano cellulose fibers from the banana peel and bract for production of acetyl and lauroyl cellulose. Carbohydr Polym 2018; 201:329-339. [PMID: 30241826 DOI: 10.1016/j.carbpol.2018.08.081] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/25/2018] [Accepted: 08/19/2018] [Indexed: 01/24/2023]
Abstract
The principal aim of the present study is to develop a method for the production of cellulose nanofibers, from the banana peel (BP) and bract (BB). It is also the aim of this study to produce cellulose-based biopolymers through acetyl and lauroyl modifications. The microwave digestion method and ball milling assisted ultra-sonication method was optimized for sustainable extraction of micro and nano cellulose fibers, respectively. The microwave digestion method was found to be effective in the removal of hemicellulose and lignin. Micro and nano cellulose fibers of BP and BB were found to contain type I cellulose structure. Thermal stability and crystallinity index of cellulose nanofibers were examined to be higher than it's native micro cellulose. Nano cellulose fibers were examined to be a potential source for production of acetyl and lauroyl cellulose, with a high degree of substitution and thermal stability. Hence, microwave digestion and ball milling assisted ultra-sonication method was proven to be effective in the extraction of nano cellulose fiber for development of cellulose-based polymers.
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Affiliation(s)
- K Harini
- Centre for Food Technology, Anna University, Sardar Patel Road, Guindy, Chennai, Tamil Nadu, India
| | - K Ramya
- Bannari Amman Institute of Technology, Sathyamangalam, Erode District, Tamil Nadu, India
| | - M Sukumar
- Centre for Food Technology, Anna University, Sardar Patel Road, Guindy, Chennai, Tamil Nadu, India.
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