Recent insights into polysaccharide-based hydrogels and their potential applications in food sector: a review
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4. Applications of hydrogels
4.1. Agriculture and food sector 4.1.1. Food packaging Traditionally, food-packaging assists safeguard foods from external impacts, like humidity, light, O 2 , microorganisms, mechanical strains as Table 4 Protein-polysaccharide-based hydrogels and their applications in Food packaging. Hydrogels Applications Composite structures Mode of preparation Benefit/drawback References Gum arabic/gelatin-stabilized emulsions Encapsulation of bioactive components in foods Uniform core-shell nanofibers Electrospinning of bilayer emulsions Improved storage stability and oil encapsulation efficiency [263] Gelatin/zein n.i Nanofibers Electrospinning followed by glucose cross-linking Good biocompatibility, non- cytotoxicity with an enhancement in mechanical properties [264] Lentil flour based electro-spun nanofibers added with gallic acid Packaging of oxidation prone foods (walnuts) Nanofibers Electrospinning using gallic acid Excellent antioxidant activity [265] Beta-lacto-globulin/pectin Packing of food products Films Electrostatic association Colloidal reliability, crystal clear scattering [68] . Starch/cellulose Packing of food products Films Casting using dry air Extreme tensile strength/low optical attributes [266] Chitosan/pectin Protection of crops by applying a coat Coatings Dipping Antimicrobial/significant layer density [267] Alginate Edible casting Films Extrusion Hindrance to Oxygen/turbidity [132] Chitosan Packaging material with Antibacterial properties Coatings Solvent-casting Antimicrobial/dissolvable [268] Methylcellulose/whey protein Packaging material sensitive to moisture Films Casting using dry air Phase separation barrier [269] Zein/starch. Used as internal packaging material Films Doping starch in zein sol Weak flexibility and transmission of water vapor. [270] Cane and gelatin Biofilm (Self-fertilizing) formation Films Casting using dry air Stability towards heat, Toughness, and dark color [122] Acid-swollen collagen fibers/nano- hydroxyapatite Food packaging Films Casting and dehydration process Enhancement in tensile strength, water vapor and oxygen barrier property [271] Poly (ethylene oxide) Drug encapsulation and release Nano fibers and films Electrospinning (nanofibers) and solvent casting (films) Increased drug (carvedilol) release rate [272] Gelatin, zein, and gelatin/zein films Resistance nanofibrous structure against water or ethanol dissolution Films and nanofibers Electrospinning and solvent casting Gelatin/zein nanofibrous film- hydrophobic casted gelatin/zein film- hydrophilic surface [273] Cellulose acetate/gelatin/ nanohydroxyapatite (CA/Gel/ nHA) nanocomposite mats Wound dressing. Nanocomposite mats Electrospinning of CA/Gel solutions (12.5, 25 and 50mg nHA). Wound treatment with higher wound closure percent (93.5 ± 1.6 % of CA/ Gel +25mg nHA group) [274] Zein/poly(lactic acid) (PLA) Active packaging for whole wheat bread Download 1.62 Mb. Do'stlaringiz bilan baham: |
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