Influence of the processing method and antimicrobial agents on properties of starch‐gelatin biodegradable films

Moreno, Olga; Dı́az, Raúl; Atarés, Lorena; Chiralt, Amparo

doi:10.1002/pi.5115

Cited by 24 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, issues related to sustainability, dwindling energy reserves, and variations in oil prices are challenges to conventional plastic packaging. An interesting alternative to conventional plastics is natural biopolymers, which have the advantages of being renewable in many cases because they are biodegradable or compostable in nature . Biodegradable films can be produced from protein, polysaccharides, lipids, or a combination of these components .…”

Section: Introductionmentioning

confidence: 99%

“…An interesting alternative to conventional plastics is natural biopolymers, which have the advantages of being renewable in many cases because they are biodegradable or compostable in nature. 1,2 Biodegradable films can be produced from protein, polysaccharides, lipids, or a combination of these components. 3,4 Starch is one of the biopolymers with the greatest potential to produce biodegradable materials due to its versatility, cheap price, and abundance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Starch–recycled gelatin composite films produced by extrusion: Physical and mechanical properties

Silva

Fakhouri

Fialho

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

This article describes using recycled gelatin in production of blends of starch (Manihot esculenta Crantz). Films were produced by extrusion using varying percentages of recycled gelatin (2.5, 5, 7.5, 10, 12.5, and 15% relative to the starch weight), plasticized with glycerol (20 wt % relative to the starch weight), and then characterized. The morphology results showed films with a cohesive matrix and no phase separation. The crystallinity analysis showed that the extrusion process eliminated crystalline zones of the granules and produced low‐crystallinity films. The addition of recycled gelatin caused an increased thermal stability and significantly increased the mechanical strength and solubility in water of the films. It also accelerated the biodegradation process. It was concluded that the process of recycling and reprocessing did not affect the properties of gelatin, even as it has significantly influenced the properties of the films. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46254.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Starch–recycled gelatin composite films produced by extrusion: Physical and mechanical properties

Silva

Fakhouri

Fialho

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The use of biopolymers, such as proteins and polyssacharides, for preparing biodegradable films and edible coatings, generates innovative possibilities . In this aspect, starch represents one of the most promising, due to its renewable nature, high availability, low cost, biodegradability, and a relatively reactive surface …”

Section: Introductionmentioning

confidence: 99%

Hydrolysis of part of cassava starch into nanocrystals leads to increased reinforcement of nanocomposite films

Costa

Souza

Silva

et al. 2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

This article reports on using cassava starch nanocrystals (CSN) to strengthen nanocomposite films from the same matrix. CSN were obtained by acid hydrolysis. Nanocomposite (starch:glycerol:CSN/4.0:2.1:1–10 wt %) were processed by casting and the films were characterized. The CSN (30% yield) presented minimally clustered globular forms, 45 to 178 nm in diameter, with a crystalline index of 46%. Water‐vapor transmission rate, tensile strength, and elastic modulus of the films were influenced by the linear effect of CSN concentration (R2 = −0.92, 0.91, 0.99, respectively), while the other parameters resulted in quadratic relations |0.69–0.96|. The film with 10% CSN presented a 43% reduction in water vapor permeability, associated with increases of 200% in traction resistance, and 616% in elasticity modulus, compared with the control. The hydrolysis of part of the cassava starch into nanocrystals resulted in a reduction in permeability and nano reinforcement of the films due to good compatibility and interaction between both, without influencing biodegradability. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45311.

show abstract

“…Polymeric materials produced from non-renewable fossil resources are unable to degrade in landfill and extensive use of these synthetic polymers leads to serious environmental concerns. 18 In response to these concerns, great attention is paid to biodegradable polymers derived from biomass (non-fossil origin) materials to be used as packaging materials and containers to reduce greenhouse gas and toxic emissions 19,20 and for medical applications 21 due to their biodegradability, biocompatibility and non-toxicity. Among the currently available biopolymers, polylactide (PLA) is the most promising as it is derived from 100% renewable resources such as sugar, corn, potatoes, cane, beet etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of antimicrobial polylactide via ring‐opening polymerization and click chemistry methods

Aynali

Doğancı

Doruk

et al. 2018

Polymer International

View full text Add to dashboard Cite

Novel biodegradable polylactide (PLA) copolymers bearing pendant antimicrobial agent groups were successfully fabricated with a combination of ring‐opening copolymerization and copper(I)‐catalysed azide–alkyne cycloaddition click reaction in a two‐step reaction procedure. First, biodegradable PLA copolymers bearing azido groups were synthesized by the ring‐opening copolymerization of l‐lactide and 2,2‐ bis(azidomethyl)trimethylene carbonate in the presence of 1‐dodecanol as protic co‐initiator and tin(II) 2‐ethylhexanoate (Sn(Oct)2) as the catalyst. Then, alkyne functionalized quaternary ammonium salts were attached onto the azido groups of the copolymers via a Huisgen 1,3‐dipolar cycloaddition reaction to give PLA imparting antimicrobial activity. The chemical structure and composition of the copolymers were clearly confirmed using 1H NMR and Fourier transform infrared spectroscopies and gel permeation chromatography. Thermal phase transition temperatures (Tm and Tg) and the thermal stability of the polymers were investigated by DSC and TGA experiments, respectively. The antimicrobial activity tests were carried out against Gram‐negative (Escherichia coli) and Gram‐positive (Staphylococcus aureus) bacteria by the drop plate method. It was observed that antimicrobial agents are more active in the polymeric form than in the monomeric form. Also, the activity depends on the compositional ratio and the length of the alkyl group on the ammonium salts. © 2018 Society of Chemical Industry

show abstract

Influence of the processing method and antimicrobial agents on properties of starch‐gelatin biodegradable films

Cited by 24 publications

References 28 publications

Starch–recycled gelatin composite films produced by extrusion: Physical and mechanical properties

Starch–recycled gelatin composite films produced by extrusion: Physical and mechanical properties

Hydrolysis of part of cassava starch into nanocrystals leads to increased reinforcement of nanocomposite films

Synthesis and characterization of antimicrobial polylactide via ring‐opening polymerization and click chemistry methods

Contact Info

Product

Resources

About