Chaiwarit Tanpong, Ruksiriwanich Warintorn, Jantanasakulwong Kittisak, Jantrawut Pensak
Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand.
Polymers (Basel). 2018 Oct 14;10(10):1144. doi: 10.3390/polym10101144.
This study aims to develop orange oil loaded in thin mango peel pectin films and evaluate their antibacterial activity against The mango peel pectin was obtained from the extraction of ripe Nam Dokmai mango peel by the microwave-assisted method. The thin films were formulated using commercial low methoxy pectin (P) and mango pectin (M) at a ratio of 1:2 with and without glycerol as a plasticizer. Orange oil was loaded into the films at 3% . The orange oil film containing P and M at ratio of 1:2 with 40% of glycerol (P₁M₂GO) showed the highest percent elongation (12.93 ± 0.89%) and the lowest Young's modulus values (35.24 ± 3.43 MPa). For limonene loading content, it was found that the amount of limonene after the film drying step was directly related to the final physical structure of the film. Among the various tested films, P₁M₂GO film had the lowest limonene loading content (59.25 ± 2.09%), which may be because of the presence of numerous micropores in the P₁M₂GO film's matrix. The inhibitory effect against the growth of was compared in normalized value of clear zone diameter using the normalization value of limonene content in each film. The P₁M₂GO film showed the highest inhibitory effect against with the normalized clear zone of 11.75 mm but no statistically significant difference. This study indicated that the orange oil loaded in mango peel pectin film can be a valuable candidate as antibacterial material for food packaging.
本研究旨在开发负载于薄芒果皮果胶膜中的橙油，并评估其对[具体细菌名称未给出]的抗菌活性。芒果皮果胶通过微波辅助法从成熟的南多迈芒果皮中提取获得。薄膜采用商业低甲氧基果胶（P）和芒果果胶（M）以1:2的比例配制，添加和不添加甘油作为增塑剂。橙油以3%的比例负载于薄膜中。含有1:2比例的P和M以及40%甘油的橙油膜（P₁M₂GO）显示出最高的伸长率（12.93±0.89%）和最低的杨氏模量值（35.24±3.43兆帕）。对于柠檬烯负载量，发现薄膜干燥步骤后的柠檬烯含量与薄膜的最终物理结构直接相关。在各种测试薄膜中，P₁M₂GO膜的柠檬烯负载量最低（59.25±2.09%），这可能是由于P₁M₂GO膜基质中存在大量微孔。使用各薄膜中柠檬烯含量的归一化值，以透明区直径的归一化值比较对[具体细菌名称未给出]生长的抑制作用。P₁M₂GO膜对[具体细菌名称未给出]显示出最高的抑制作用，归一化透明区为11.75毫米，但无统计学显著差异。本研究表明，负载于芒果皮果胶膜中的橙油可成为食品包装抗菌材料的有价值候选物。
