Analysis of Quality Properties, Microbial Stability, and Biodegradability of Biodegradable Containers Made of Pork Skin Gelatin

Lee, Sol-Hee; Jeong, Chang-Hwan; Oh, Yumi; Kim, Hack-Youn

doi:10.13050/foodengprog.2021.25.4.347

Cited by 2 publications

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“…The biodegradable container was prepared according to [ 27 ]. Gelatin powder, eggshell powder, and walnut shell powder used in the preparation were purchased from Jewon International (Seoul, Korea), Ganong Bio (Pocheon, Korea), and The Witch (Seoul, Korea), respectively, with a particle size of 180 mesh at this time.…”

Section: Methodsmentioning

confidence: 99%

“…In previous studies, biodegradable containers have been produced using gelatin and walnut shells as plastic substituents, where the production ratio for walnut shell materials was set at two types [ 27 ]. In this study, therefore, the pH, TBARS, VBN, microbial population, and color were compared between a container of plastic packaging and biodegradable containers produced based on the two production ratios, with the aim of determining whether the so-produced biodegradable containers could substitute plastic packaging containers.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Food Storage Stability of Biodegradable Containers Made of Pork Skin Gelatin Polymer with Walnut Shell Powder

2022

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This study analyzes the food storage stability of biodegradable containers made of pork skin gelatin polymer. Packaging materials were prepared with different proportions of walnut shell powder, including 10% (W10), 20% (W20), and polyethylene packaging (PE) as a control. To analyze storage stability, parameters such as pH, thiobarbituric acid reactive substance (TBARS), volatile basic nitrogen (VBN), microbial population, and color were measured. The pH, yeast and mold, redness, and yellowness of W10 and W20 had no significant difference compared to those of PE in all storage periods (p > 0.05). The TBARS of W20 was shown to slowly increase compared to W10. The VBN concentration of W10 and W20 were significantly higher than that of PE in the first and second weeks, but there was no significant difference in the third week (p < 0.05). The total bacterial counts of W10 and W20 were significantly higher than that of PE during the first week (p < 0.05), but there was no significant difference thereafter (p > 0.05). The lightness values of W10 and W20 were significantly lower than that of PE in the second and third weeks (p < 0.05). These results indicated that biodegradable containers containing up to 20% walnut shell powder can substitute plastic packaging materials.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Food Storage Stability of Biodegradable Containers Made of Pork Skin Gelatin Polymer with Walnut Shell Powder

2022

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“…Biodegradable containers were manufactured by mixing eggshell powder (purity 100%) and walnut powder (purity 100%) with the prepared gelatin [ 23 ] using the following method for establishing mixing ratios. The prepared gelatin powder was hydrated by adding three volumes of distilled water to a water bath (JSWB-30T, Korea) at 100 °C for 3 h. Then, 20% eggshell powder was added to the liquid gelatin.…”

Section: Methodsmentioning

confidence: 99%

Utilization of By-Products from Livestock: Study on the Mechanical and Thermal Properties of Biodegradable Containers Made with Pork Skin Gelatin Polymer

Lee

Kim

2022

Foods

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This study aimed to develop a biodegradable container made of pork gelatin. Gelatin was extracted from pork skin by hot water at 80 °C, and containers were prepared by adding eggshell powder (20%) as a pore agent, and walnut powder (0.08 wt%; PEW1, 0.14 wt%; PEW2) to improve hardness. The blends were molded for each experiment and dried at 30 °C for 24 h, at 40 °C for 16 h, and at 121 °C for 16 h. The containers were analyzed with respect to morphological (SEM; scanning electron microscope), mechanical (tensile strain and stress), and thermal (DSA; differential scanning calorimetry and TGA; thermogravimetric analysis) properties, as well as biodegradability. SEM investigation showed a smoother surface for PEW1 than for PEW2. The tensile stress of PEW2 (37.86 MPa) was significantly higher than that of PEW1 (28.40 MPa), and the melting enthalpies were 137.60 J/g (PEW1) and 309.60 J/g (PEW2). TGA showed similar properties, but PEW2 contained more lignin; therefore, its decomposition temperature was higher. The PEW1 and PEW2 containers were completely biodegraded after approximately 7 and 11 weeks, respectively. Walnut shell powder increased the hardness, but slowed the biodegradation process. The applications of this biodegradable container are short-lived products such as food packaging.

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Analysis of Quality Properties, Microbial Stability, and Biodegradability of Biodegradable Containers Made of Pork Skin Gelatin

Cited by 2 publications

References 0 publications

Analysis of Food Storage Stability of Biodegradable Containers Made of Pork Skin Gelatin Polymer with Walnut Shell Powder

Analysis of Food Storage Stability of Biodegradable Containers Made of Pork Skin Gelatin Polymer with Walnut Shell Powder

Utilization of By-Products from Livestock: Study on the Mechanical and Thermal Properties of Biodegradable Containers Made with Pork Skin Gelatin Polymer

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