| 1. |
- Basumatary, Indra Bhusan, et al.
(författare)
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Chitosan-based active coating for pineapple preservation : Evaluation of antimicrobial efficacy and shelf-life extension
- 2022
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Ingår i: Lebensmittel-Wissenschaft + Technologie. - : Elsevier BV. - 0023-6438 .- 1096-1127. ; 168, s. 113940-
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Tidskriftsartikel (refereegranskat)abstract
- Pineapple is a tropical fruit that is the most economically significant member of the Bromeliaceae family that are rich in flavonoids, phenolic acids, and antioxidants, which protect human cells from free radicals known to cause chronic diseases. However, short postharvest shelf-life of the fruit limits its long-distance distribution and consumption. Chitosan is a positively charged polysaccharide consisting of N-acetyl D-glucosamine and D-glucosamine units that can be used as a promising sustainable biopolymer for active coating of the fruit. In this work, chitosan-based nanocomposite formulations were prepared with added eugenol (clove essential oil) and Aloe vera gel as antioxidant, antibacterial and antifungal agents. The results showed that the incorporation of eugenol oil nanoemulsion and Aloe vera gel in the coatings enhanced their physico-chemical and functional properties including antimicrobial activities against four foodborne bacterial pathogens (Escherichia coli, Alcaligenes faecalis, Staphylococcus aureus, and Bacillus subtilis) and two fungal isolates. The developed coatings not only kept the pineapple fresh, but also preserved its quality and prolonged their shelf-life by up to three weeks during storage in ambient conditions.
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| 2. |
- Kumar, Santosh, et al.
(författare)
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An overview of natural biopolymers in food packaging
- 2022
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Ingår i: Biopolymer-Based Food Packaging. - : Wiley. ; , s. 1-28
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter provides a comprehensive overview of various biopolymers and their properties and applications in food packaging and preservation. Biopolymers can be grouped into two broad categories depending on the process of obtaining them: polymers derived from biomass and polymers synthesized from monomers (obtained from biomass). Biomass-derived polymers include polysaccharide, protein, lipid, peptide, polyhydroxyalkanoate, and gum that are directly obtained from plants, animals, and microorganisms either by fermentation or by chemical method. Biopolymers and their composites have emerged as alternatives to conventional synthetic plastics for fabrication of films and coatings for food packaging applications. Contemporary and future researches have been and continue to be devoted to large-scale manufacturing and commercialization of biopolymer-based food packaging systems in order to reduce the burden of synthetic plastics on our environment.
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| 3. |
- Kumar, Santosh, et al.
(författare)
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Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging
- 2020
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Ingår i: Foods. - : MDPI. - 2304-8158. ; 9:9
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Tidskriftsartikel (refereegranskat)abstract
- In the context of emerging global concerns with synthetic plastic packaging, alternative natural biodegradable packaging materials are gaining increasing attention for food packaging applications. In this study, chitosan and gelatin nanocomposite hybrid films containing green synthesized zinc oxide (ZnO) nanoparticles (NPs) were developed and microstructural properties were studied. Antimicrobial activity of the developed films was evaluated using both Gram negative (Escherichia coli) and Gram positive bacteria (Staphylococcus aureus). Green synthesis protocol was used for the precipitation of ZnO NPs using fruit extract of Cassia fistula. The as-synthesized polyhedral ZnO NPs were in the range of 20-40 nm (average size approximate to 29 nm). Reinforcement with ZnO NPs in the hybrid films lead to improved thermal stability, elongation-at-break (EAB), and compactness properties. The developed films with 2% and 4% ZnO NPs showed a smooth, compact, and heterogeneous surface morphology compared to the control (chitosan-gelatin hybrid) films. Disc diffusion assays showed that the nanocomposite film had significant antimicrobial activity against E. coli. The developed hybrid nanocomposite films have potential to be developed as biodegradable alternative for postharvest packaging of fresh fruits and vegetables.
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| 4. |
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| 5. |
- Kumar, Santosh, et al.
(författare)
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Biopolymer-Based Food Packaging : Innovations and Technology Applications
- 2022
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- Biopolymer-Based Food Packaging Explore the latest developments and advancements in biopolymer-based food packaging In Biopolymer-Based Food Packaging: Innovations and Technology Applications, a team of accomplished researchers delivers a complete, systematic, and sequential account of the contemporary developments in the application of biopolymers for sustainable food packaging. This book introduces the fabrication, characterization as well as benefits arising from the enhanced functionalities of biopolymer-based food packaging materials. The authors introduce various polysaccharide, protein, and microbial polymer-based food packaging films and coatings, as well as biopolymer-based blends and nanocomposites. Importance of these materials as active and intelligent food packaging systems is also introduced. Finally, the book explores biopolymer-based edible food packaging, and its efficacy in extending the shelf-life of perishable food items using sustainable materials and processes suitable for the future of circular economies around the world. Readers will also find: A thorough introduction to the incorporation of nanomaterials as fillers to improve the physico-chemical, mechanical, thermal, barrier, optical, and antimicrobial properties of food packaging nanocomposites Comprehensive discussions of the use of plant-based bioactive compounds, including essential oils, in biopolymer-based food packaging Practical examinations of silver and zinc oxide nanoparticles in food packaging In-depth treatments of polylactic acid-based composites for food packaging applications Biopolymer-Based Food Packaging: Innovations and Technology Applications is an invaluable resource for academic researchers and professionals in food packaging and related industries, as well as research scholars, graduate students, and entrepreneurs working and studying in the field of food preservation, environmental safety, and human health with a focus on the sustainable future.
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| 6. |
- Kumar, Santosh, et al.
(författare)
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Chitosan based nanocomposite films and coatings : Emerging antimicrobial food packaging alternatives
- 2020
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Ingår i: Trends in Food Science & Technology. - : ELSEVIER SCIENCE LONDON. - 0924-2244 .- 1879-3053. ; 97, s. 196-209
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Forskningsöversikt (refereegranskat)abstract
- Background: Demand for healthy and safe food with minimal use of synthetic inputs (including synthetic preservatives) is increasing rapidly. Plastic polymers being hazardous to the environment, significant efforts have been devoted to evaluate various bio-based polymers as alternatives to synthetic plastic packaging. Chitin and its deacetylated derivative, chitosan, is primarily a by-product of crustacean, fish and seafood processing and handling. Chitosan possesses antimicrobial activities and film forming property, making them attractive bio-polymers for food packaging and food preservation applications applied through spraying, dipping, coating, or wrapping by films. Scope and approach: This comprehensive review of contemporary research focuses on applications of chitosan and chitosan based nanocomposites in the area of food packaging and preservation. It includes different properties and functionalities of chitosan, various blends and nanocomposites of chitosan, their fabrication techniques, and applications in shelf life extension of fruits, vegetables, meat and fish products. Key findings and conclusions: Chitosan is an attractive alternative to synthetic plastics polymers due to its bio-degradability, antimicrobial activity, and film forming properties. Incorporation of nanomaterials into chitosan based food-packaging systems can prevent the growth of spoilage and pathogenic microorganisms, improve food quality and safety, and extend shelf-life of food. It has been reported that applications of chitosan-based films or coatings or treatments have resulted in shelf life extension of fresh produce, meat products, bread, and dairy products such as cheese which has been highlighted.
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| 7. |
- Kumar, Santosh, et al.
(författare)
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Current progress in valorization of food processing waste and by-products for pectin extraction
- 2023
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Ingår i: International Journal of Biological Macromolecules. - : Elsevier BV. - 0141-8130 .- 1879-0003. ; 239
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Tidskriftsartikel (refereegranskat)abstract
- Food processing waste and by-products such as peel of citrus fruit, melon, mango, pineapple, etc. and fruit pomace can be utilized for manufacturing of several high-value products. Valorization of these waste and byproducts for extraction of pectin, can help offset growing environmental concerns, facilitate value-addition of by-products and their sustainable uses. Pectin has many applications in food industries such as gelling, thickening, stabilizing, and emulsifying agent, and as a dietary fibre. This review elaborates on various conventional and advanced, sustainable pectin extraction techniques, and paints a comparative picture between them considering extraction efficiency, quality, and functionality of the pectin. Conventional acid, alkali, and chelating agents-assisted extraction have been profusely used for pectin extraction, but advanced extraction technologies e. g., enzyme, microwave, supercritical water, ultrasonication, pulse electric field and high-pressure extraction are preferred due to less energy consumption, better quality product, higher yield, and minimal or no generation of harmful effluent.
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| 8. |
- Kumar, Santosh, et al.
(författare)
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Preface
- 2022
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Ingår i: Biopolymer-Based Food Packaging. - : Wiley.
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 9. |
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- 2019
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Tidskriftsartikel (refereegranskat)
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