Preparation and characterization of polypropylene/sodium propionate (PP/SP) composite films for bread packaging application

Thanakkasaranee, Sarinthip; Kim, Dowan; Seo, Jongchul

doi:10.1002/pts.2369

Cited by 19 publications

(7 citation statements)

References 67 publications

(120 reference statements)

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“…These findings are in agreement with previous studies [ 56 , 57 ], which reported that water barrier properties and water vapor sorption by the package had an effect on moisture accumulation and microbial growth, playing an important role in extending bread shelf life.…”

Section: Resultssupporting

confidence: 93%

Phenolic Extraction of Moringa oleifera Leaves in DES: Characterization of the Extracts and Their Application in Methylcellulose Films for Food Packaging

Braham

Amaral

Biernacki

et al. 2022

Foods

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In this work, a qualitative study of the phenolic content of Moringa oleifera leaves (MO), extracted with deep eutectic solvents (DES) based on choline chloride (ChCl) with lactic acid (LA) or glycerol (GLY), was performed by high-resolution mass spectrometry (HPLC-DAD-ESI-MSn). The two solvents (DES-LA and DES-GLY) extract similar classes of phenolics, and ten compounds were identified. The antioxidant profile was also studied (TPC, TFC, DPPH, FRAP, ORAC, and ABTS). Both solvents show an efficient extraction of phenolic compounds and high antioxidant capacity was verified for the extracts. However, the DES-Gly have a higher capacity for polyphenolic extraction (TPC led to 38.409 ± 0.095 mg GAE.g−1 and 2.259 ± 0.023 mg QE.g−1 for TFC). Films based on methylcellulose (MC) containing different amounts of DES or MO extracts, acting as plasticizers, were developed and characterized regarding their mechanical, optical, water vapor permeability, and microstructural properties. All films are uniform, clear, and transparent with smooth, homogeneous surfaces. It was found that the presence of more than 10% of MO extract and/or DES provided more flexible films (Eb for MC 2%_DES 20% achieved 4.330 ± 0.27 %, and 8.15 ± 0.39 % for MC 2%_MO 20%) with less mechanical and barrier resistance. The ultimate objective of this study was to provide information that could assist in the development of antimicrobial active methylcellulose films for sliced wheat bread packaging.

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Section: Resultssupporting

confidence: 93%

Phenolic Extraction of Moringa oleifera Leaves in DES: Characterization of the Extracts and Their Application in Methylcellulose Films for Food Packaging

Braham

Amaral

Biernacki

et al. 2022

Foods

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“…The unique combination of high flexibility and low water permeability brought a substantial advantage for the PIB blend films to be used as a stretchable packaging material for flexible NGs. To demonstrate this advantage, a scatter plot was constructed to compare the modulus and water permeability of our PIB blend film to other state-of-the-art commercial or literature-reported packaging materials (Figure c). − It can be clearly seen that the PIB blend film from this work resides uniquely at the lower left corner. Ecoflex, a commercial elastomer with a similar modulus, had substantially higher water permeability.…”

Section: Resultsmentioning

confidence: 99%

Stretchable Encapsulation Materials with High Dynamic Water Resistivity and Tissue-Matching Elasticity

Shao

Yan

et al. 2022

ACS Appl. Mater. Interfaces

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Flexible implantable medical devices (IMDs) are an emerging technology that may substantially improve the disease treatment efficacy and quality of life of patients. While many advancements have been achieved in IMDs, the constantly straining application conditions impose extra requirements for the packaging material, which needs to retain both high stretchability and high water resistivity under dynamic strains in a physiological environment. This work reports a polyisobutylene (PIB) blendbased elastomer that simultaneously offers a tissue-like elastic modulus and excellent water resistivity under dynamic strains. The PIB blend is a homogeneous mixture of two types of PIB molecules with distinct molecular weights. The blend achieved an optimal Young's modulus of 62 kPa, matching those of soft biological tissues. The PIB blend film also exhibited an extremely low water permittivity of 1.6−2.9 g m −2 day −1 , from unstrained to 50% strain states. The combination of high flexibility and dynamic water resistivity was tested using triboelectric nanogenerators (TENGs). The PIB blendpackaged TENG was able to stably operate in water for 2 weeks, substantially surpassing the protection offered by Ecoflex. This work offered a promising material solution for packaging flexible IMDs to achieve stable performance in a strained physiological environment.

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“…Hydrophilicity of polymeric film can be investigated by the water contact angle. As shown in Figure 7 and Table 1, a dynamic water contact angle of all films decreased with time (0-50 s) due to the chemical affinity between water and polymeric films [48]. The dynamic water contact angles of the native rice starch were slightly changed in the range of 93.9-90.9 with time.…”

Section: Contact Angle Of Native Rice Starch Film and Cmsr Filmsmentioning

confidence: 90%

Morphology, Mechanical, and Water Barrier Properties of Carboxymethyl Rice Starch Films: Sodium Hydroxide Effect

et al. 2022

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Carboxymethyl rice starch films were prepared from carboxymethyl rice starch (CMSr) treated with sodium hydroxide (NaOH) at 10–50% w/v. The objective of this research was to determine the effect of NaOH concentrations on morphology, mechanical properties, and water barrier properties of the CMSr films. The degree of substitution (DS) and morphology of native rice starch and CMSr powders were examined. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) were used to investigate the chemical structure, crystallinity, and thermal properties of the CMSr films. As the NaOH concentrations increased, the DS of CMSr powders increased, which affected the morphology of CMSr powders; a polyhedral shape of the native rice starch was deformed. In addition, the increase in NaOH concentrations of the synthesis of CMSr resulted in an increase in water solubility, elongation at break, and water vapor permeability (WVP) of CMSr films. On the other hand, the water contact angle, melting temperature, and the tensile strength of the CMSr films decreased with increasing NaOH concentrations. However, the tensile strength of the CMSr films was relatively low. Therefore, such a property needs to be improved and the application of the developed films should be investigated in the future work.

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Preparation and characterization of polypropylene/sodium propionate (PP/SP) composite films for bread packaging application

Cited by 19 publications

References 67 publications

Phenolic Extraction of Moringa oleifera Leaves in DES: Characterization of the Extracts and Their Application in Methylcellulose Films for Food Packaging

Phenolic Extraction of Moringa oleifera Leaves in DES: Characterization of the Extracts and Their Application in Methylcellulose Films for Food Packaging

Stretchable Encapsulation Materials with High Dynamic Water Resistivity and Tissue-Matching Elasticity

Morphology, Mechanical, and Water Barrier Properties of Carboxymethyl Rice Starch Films: Sodium Hydroxide Effect

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