Preparation and characterization of a biodegradable starch-based antibacterial film containing nanocellulose and polyhexamethylene biguanide

Yuan, Yongli; Chen, Hongyan

doi:10.1016/j.fpsl.2021.100718

Cited by 38 publications

(12 citation statements)

References 27 publications

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“…As for the neat starch, the absorption bands at 1077 and 994 cm −1 correspond to COC (ether bonds) stretching. [ 56,57 ] For the nanocomposites, new peaks related to the functional groups of NC can be observed. The absorption band in the range of 3200–3600 cm −1 correspond to the symmetrical vibration of the hydroxyl groups present on the surface of the composites.…”

Section: Resultsmentioning

confidence: 99%

Properties and characterization of carrot nanocellulose/starch biopolymer nanocomposites

2022

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In order to produce bio‐nanocomposites for potential food packaging applications, nanocellulose (NC) was extracted from carrot pulp and different weight fractions of NC (5, 7, and 10 wt%) were incorporated into corn starch, either with or without thyme extract, using the solvent casting process. The particle size of the extracted NC (200–300 nm) was determined using the dynamic light scattering test, and field emission scanning electron microscopy confirmed the spherical morphology of the NC, which was successfully extracted from carrot. Fourier transform infrared spectroscopy analysis demonstrated excellent chemical interactions between the starch and NC. According to SEM images of starch‐NC nanocomposites, uniform dispersion of NC into starch was observed for all formulations. Besides, increasing the proportion of NC up to 10 wt% enhanced the tensile strength of starch nanocomposites by 280%. Since the incorporation of NC into starch increased the crystallinity index of the samples, the water absorption capacity and oxygen transmittance rate tests showed that the presence of NC reduced water and oxygen gas diffusion into the starch matrix. Furthermore, thyme‐loaded nanocomposite had remarkable antimicrobial activity, particularly in the case of gram‐positive bacteria (Staphylococcus aureus), as it expanded the bacteria's inhibitory zone by about 10 mm compared with those without an antibacterial agent. Finally, the fabricated bio‐nanocomposites exhibited balanced mechanical characteristics, perfect gas and water barrier properties, as well as promising antibacterial activity for use in the food packaging industry.

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Section: Resultsmentioning

confidence: 99%

Properties and characterization of carrot nanocellulose/starch biopolymer nanocomposites

2022

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“…Polyhexamethylene guanidine is a bactericidal agent that has been used in many applications such as antiseptics, 150 water treatment, 151 the food industry 152 and personal hygiene applications. 153 Zhuo et al 154 synthesized three oligoguanidine hydrochloride polymers bearing various alkyl chains e.g., butamethylene, hexamethylene and octanethylene and m-xylylene guanidine HCl by reacting, at high temperature, equimolar amounts of the appropriate diamine and guanidine hydrochloride.…”

Section: Polymer Solutions As Antimicrobial Agentsmentioning

confidence: 99%

Section: Polymer Solutions As Antimicrobial Agentsmentioning

confidence: 99%

Polymers showing intrinsic antimicrobial activity

2022

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“…Other bioactive reagents, such as polyhexamethylene biguanide (PHMB) and epsilonpolylysine (as is shown in Table 3), are cationic polymers with broad antibacterial activities. These properties have proven to be affected by the incorporation of such polymers into carrageenan, starch, and starch/ cellulose film matrices [148][149][150]. The complex film of starch and cellulose can totally inhibit E. coli when the PHMB amounts to over 6%, prolonging the shelf life of fruit [149].…”

Section: Natural Products With Antimicrobial Activity Integrated With...mentioning

confidence: 99%

“…These properties have proven to be affected by the incorporation of such polymers into carrageenan, starch, and starch/ cellulose film matrices [148][149][150]. The complex film of starch and cellulose can totally inhibit E. coli when the PHMB amounts to over 6%, prolonging the shelf life of fruit [149]. In addition, lytic bacteriophages can be loaded in the cellulose matrix for enhanced antibacterial activity, and they can be viable on the matrix for 14 days [129].…”

Section: Natural Products With Antimicrobial Activity Integrated With...mentioning

confidence: 99%

Active Food Packaging Made of Biopolymer-Based Composites

Tang

et al. 2022

Materials

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Food packaging plays a vital role in protecting food products from environmental damage and preventing contamination from microorganisms. Conventional food packaging made of plastics produced from unrenewable fossil resources is hard to degrade and poses a negative impact on environmental sustainability. Natural biopolymers are attracting interest for reducing environmental problems to achieve a sustainable society, because of their abundance, biocompatibility, biodegradability, chemical stability, and non-toxicity. Active packaging systems composed of these biopolymers and biopolymer-based composites go beyond simply acting as a barrier to maintain food quality. This review provides a comprehensive overview of natural biopolymer materials used as matrices for food packaging. The antioxidant, water barrier, and oxygen barrier properties of these composites are compared and discussed. Furthermore, biopolymer-based composites integrated with antimicrobial agents—such as inorganic nanostructures and natural products—are reviewed, and the related mechanisms are discussed in terms of antimicrobial function. In summary, composites used for active food packaging systems can inhibit microbial growth and maintain food quality.

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Preparation and characterization of a biodegradable starch-based antibacterial film containing nanocellulose and polyhexamethylene biguanide

Cited by 38 publications

References 27 publications

Properties and characterization of carrot nanocellulose/starch biopolymer nanocomposites

Properties and characterization of carrot nanocellulose/starch biopolymer nanocomposites

Polymers showing intrinsic antimicrobial activity

Active Food Packaging Made of Biopolymer-Based Composites

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