Preparation of poly(lactic acid) and pectin composite films intended for applications in antimicrobial packaging

Liu, L. S.; Finkenstadt, Victoria L.; Liu, C.-K.; Jin, Tony; Fishman, Marshall L.; Hicks, Kevin B.

doi:10.1002/app.26590

Cited by 95 publications

(62 citation statements)

References 35 publications

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“…They have been used in many industrial applications, such as in packaging, coating or protective films for the shipping and handling of different materials, [1][2][3] and controlled delivery of drugs. 4,5 They are also used for their pharmacological activity. [6][7][8] Alginate is a linear polysaccharide derived from brown sea algae and is composed of (1→4)-linked b-D-mannuronate residues (M units) and (1→4)-linked a-Lguluronate (G units) in different proportions.…”

Section: Introductionmentioning

confidence: 99%

Dynamic light scattering and viscosimetry of aqueous solutions of pectin, sodium alginate and their mixtures: effects of added salt, concentration, counterions, temperature and chelating agent

Lima¹,

Soldi²

2009

J. Braz. Chem. Soc.

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Efeitos de adição de sal, concentração, presença de contraíons, temperatura e agente quelante em soluções aquosas de pectina, alginato de sódio e misturas destes foram analisadas por viscosimetria e espalhamento de luz dinâmico (DLS). A viscosidade intrínseca dos sistemas binários diminuiu com a adição de sal e com o aumento da temperatura, porém, mostrou-se insensível à adição de NaEDTA. Como esperado, a viscosidade intrínseca do sistema ternário alginato/pectina/água foi igual a média da viscosidade intrínseca determinada para os sistemas binários. Estudos de DLS indicaram a ocorrência de uma distribuição bimodal (presença dos modos de relaxação rápido e lento) para ambos os sistemas binários e ternários a 25 °C, refletindo um processo de agregação. No caso do modo lento de relaxação, um aumento significativo do raio hidrodinâmico foi observado tanto para os sistemas binários como ternário, na presença de NaCl e KCl a 25 °C. No entanto, a 80 °C, o raio hidrodinâmico correspondente ao modo lento em soluções de KCl foi praticamente constante para todos os sistemas estudados e não foi observado para o sistema binário alginato/solução aquosa.The effects of added salt, concentration, counterions, temperature and chelating agent on aqueous solutions of pectin, sodium alginate and their mixtures were analyzed by viscosimetry and dynamic light scattering (DLS) techniques. The intrinsic viscosity of the binary systems decreased with the addition of salt and with temperature, while it was found to be insensitive to the addition of NaEDTA. As expected the intrinsic viscosity of the ternary alginate/pectin/water system was equal to the average of the intrinsic viscosity for the binary systems. The DLS studies indicated a bimodal distribution (fast and slow relaxation modes) for both binary and ternary systems at 25 °C, reflecting aggregation. A significant increase in the hydrodynamic radius, in the case of the slow mode, was observed for the binary and ternary systems in the presence of NaCl and KCl at 25 °C. However, at 80 °C the hydrodynamic radius for the slow mode in KCl solutions was practically constant for all the studied systems, except for the alginate binary solutions in which were not observed.

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Section: Introductionmentioning

confidence: 99%

Dynamic light scattering and viscosimetry of aqueous solutions of pectin, sodium alginate and their mixtures: effects of added salt, concentration, counterions, temperature and chelating agent

Lima¹,

Soldi²

2009

J. Braz. Chem. Soc.

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“…PLA (poly(D/L-lactic acid) in combination with pectin (Liu et al, 2007) or alginate (Jin et al, 2009) had been shown as effective antimicrobial packaging material. Theinsathid et al (2012) reported antilisterial and antisalmonellal activity of PLA films coated with lauric arginate for use in food-contact packaging of cooked sliced ham to combat foodborne pathogens.…”

Section: Release Of Sl From Biopolymersmentioning

confidence: 99%

Control-release of antimicrobial sophorolipid employing different biopolymer matrices

Solaiman

Ashby

Zerkowski

et al. 2015

Biocatalysis and Agricultural Biotechnology

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“…However, it has been found that the above drawbacks can be overcome by the addition of an appropriate filler (7)(8)(9)(10)(11)(12)(13)(14). Many studies have been conducted to provide PLA with antimicrobial properties that might encourage its use in active food packaging as well as in specific biomedical applications (15)(16)(17)(18)(19)(20). Controlled drug delivery systems are attracting increasing attention in the biomedical and pharmaceutical sectors (21)(22).…”

Section: Introductionmentioning

confidence: 99%

Incorporation of an Antibiotic in Poly(Lactic Acid) and Polypropylene by Melt Processing

Botta

Scaffaro

Gallo

2016

Journal of Applied Biomaterials & Functional Materials

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ORIGINAL RESEARCH ARTICLEProviding a polymeric device with antibacterial properties can be achieved by different routes, including the modification of the polymer structure. The incorporation of antimicrobials, or other molecules, into a polymer matrix by melt processing is a method that has been widely adopted in the recent past since it has the advantage of using equipment already commonly used to process thermoplastic materials (23)(24)(25)(26)(27)(28)(29)(30)(31)(32). This method also ensures large production volumes and solventless systems with obvious positive implications for environmental and economic factors. Nevertheless, the high temperatures involved in melt processing may lead to the melting and/or decomposition of the antimicrobial agent, with consequent deactivation. Thus, it is mandatory to know both the melt and decomposition temperatures of the biocide additives in order to avoid their degradation.In our previous works, we successfully prepared different antimicrobial polymeric systems by melt compounding (24)(25)(26)(27)(29)(30)(31)(32). In particular, we incorporated different antibacterial additives into an appropriate polymeric matrix, taking both the final application and the processing temperature of the polymeric sample into account when choosing the polymer-antibacterial pairing.Ciprofloxacin (CFX) is a wide-spectrum antibiotic belonging to the fluoroquinolone family. It is active against many strains of bacterial pathogens responsible for urinary tract, respiratory, abdominal and gastrointestinal infections, including both . Its melting temperature is about 268°C (37).

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Preparation of poly(lactic acid) and pectin composite films intended for applications in antimicrobial packaging

Cited by 95 publications

References 35 publications

Dynamic light scattering and viscosimetry of aqueous solutions of pectin, sodium alginate and their mixtures: effects of added salt, concentration, counterions, temperature and chelating agent

Dynamic light scattering and viscosimetry of aqueous solutions of pectin, sodium alginate and their mixtures: effects of added salt, concentration, counterions, temperature and chelating agent

Control-release of antimicrobial sophorolipid employing different biopolymer matrices

Incorporation of an Antibiotic in Poly(Lactic Acid) and Polypropylene by Melt Processing

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