Propyl gallate 함량에 따른 Polylactic acid 기반의 식품 포장용 항균 생분해성 필름 특성
Characteristics of Polylactic Acid-based Antibacterial Biodegradable Film for Food Packaging According to Propyl gallate Content
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In this study, to produce an antibacterial biodegradable film, propyl gallate, an antioxidant, was added, and physical properties such as tensile properties, elongation, and moisture permeability of the film were analyzed according to the amount added, and antibacterial evaluation was conducted to find the optimal mixing ratio for antibacterial properties. did. As a result of the analysis, the tensile strength, which indicates the strength of the packaging paper, was found to be in the range of 44.17~57.33 N/mm2, the elongation rate was 2.37~18.23%, and the tear strength was 112.20~142.10 N/mm. In the case of moisture permeability, it ranged from 57.07 to 319.67 g/m2·day and Oxygen permeability, it ranged from 499.33 to 924.33 cm3/m2·24h·atm. And in terms of optical properties, the PLA +PG 3% group showed excellent UV protection at 0.55%. All of them met the established dissolution standards for food additives. PLA + PG 3% showed an inhibition rate of 99.999% for all three types of harmful bacteria, confirming excellent antibacterial properties. Based on the above results, the optimal PLA-based mixing ratio that satisfies all physical properties, specifications, and antibacterial requirements was set as PLA + PG 3%.
Abstract
In this study, to produce an antibacterial biodegradable film, propyl gallate, an antioxidant, was added, and physical properties such as tensile properties, elongation, and moisture permeability of the film were analyzed according to the amount added, and antibacterial evaluation was conducted to find the optimal mixing ratio for antibacterial properties. did. As a result of the analysis, the tensile strength, which indicates the strength of the packaging paper, was found to be in the range of 44.17~57.33 N/mm2, the elongation rate was 2.37~18.23%, and the tear strength was 112.20~142.10 N/mm. In the case of moisture permeability, it ranged from 57.07 to 319.67 g/m2·day and Oxygen permeability, it ranged from 499.33 to 924.33 cm3/m2·24h·atm. And in terms of optical properties, the PLA +PG 3% group showed excellent UV protection at 0.55%. All of them met the established dissolution standards for food additives. PLA + PG 3% showed an inhibition rate of 99.999% for all three types of harmful bacteria, confirming excellent antibacterial properties. Based on the above results, the optimal PLA-based mixing ratio that satisfies all physical properties, specifications, and antibacterial requirements was set as PLA + PG 3%.
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