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| 紫苏粗多酚纳米纤维膜的制备及表征 |
| Preparation and characterization of Perilla frutescens crude polyphenol nanofiber membrane |
| 投稿时间：2025-03-24 修订日期：2025-04-18 |
| DOI： |
| 中文关键词: 静电纺丝 保鲜膜 紫苏粗多酚 抗氧化 |
| 英文关键词:Electrospinning, preservation film, Perilla frutescens crude polyphenols, antioxidant |
| 基金项目: |
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| 摘要点击次数: 35 |
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| 中文摘要: |
| 为研发绿色安全、成本较低的新型水果保鲜膜,同时进一步拓宽紫苏粗多酚(PFCP)的实际应用领域,本研究通过静电纺丝技术制备了以明胶/玉米醇溶蛋白(M/Z)为成膜剂,添加葡萄糖对其进一步改性(M/Z/G),且负载PFCP的纳米复合纤维膜(M/Z/G/P),并通过扫描电镜、X射线衍射、水接触角、抗氧化活性和生物安全性测试对纤维膜进行了表征,结果表明该纳米纤维膜形貌光滑,分布致密均一,平均直径在240-420nm之间。纳米纤维膜具有良好的耐水性,M/Z/G/P-1、M/Z/G/P-2、和M/Z/G/P-3的3 s接触角分别为(107.65±3.69)°、(95.09±3.98)°和(95.76±4.79)°。此外,纳米纤维膜的抗氧化活性随着PFCP含量的上升而明显提高,对DPPH和ABTS自由基的清除率分别高达93.88%和70.6%。CCK-8实验表明在PFCP最佳添加量1000 μg/mL的纤维膜具有良好的生物安全性,且在4 ℃贮藏期间,纤维膜能明显延缓新鲜葡萄的失水皱缩、果肉软化的不良现象,有效延长了葡萄的贮藏时间和品质。因此该纳米纤维膜有望成为一种新型的活性包装材料。 |
| 英文摘要: |
| In order to develop a green, safe and low-cost fruit preservation film as well as further expand the practical application field of Perilla frutescens crude polyphenol (PFCP). The nanofiber membranes were characterized by scanning electron microscopy, X-ray diffraction, water contact angle, antioxidant activity and biosafety tests. The results showed that the membranes were smooth and the nanofiber were uniformly distributed, with an average diameter of 240-420 nm. The films had good resistance to water, the contact angles of M/G/Z/P-1, M/G/Z/P-2, and M/G/Z/P-3 in 3 s were (107.65-3.69)° , (95.09-3.98) ° and (95.76-4.79) ° respectively. In addition, with the increase of PFCP content, the antioxidant activity of films increased significantly and the scavenging rates of DPPH and ABTS free radical were up to 93.88% and 70.6%, respectively. CCK-8 experiment showed that the nanofiber film with the optimum dosage of PFCP(1000 μg/mL) was safe. The membranes could significantly delay the adverse phenomenon of water loss, shrinkage and flesh softening of fresh grapes that were stored at 4 ℃, effectively extending the storage time and quality of grapes. Therefore, the nanofiber film is expected to become a new type of active packaging material. |
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