Gui Hang, Zhao Meiyan, Zhang Shiqi, Yin Ruoyu, Hu Changying, Fan Min, Li Li
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China.
Foods. 2022 Jul 28;11(15):2252. doi: 10.3390/foods11152252.
The short-term shelf life of straw mushrooms (Volvariella volvacea) is a major challenge, hampering their wide distribution. Thus, the aim of this work was to develop a novel active packaging composed of essential oils (EOs), particularly clove oil (CO) and peppermint oil (PO), to reduce autolysis of straw mushrooms. The morphological characterizations, mechanical properties, barrier properties, and antioxidant activities of the films were characterized. The suppressive effects of the EOs on straw mushroom autolysis were estimated during storage at 16 ± 1 °C for 96 h. The results indicated that the addition of EOs weakened the mechanical and barrier properties of the films. The radical-scavenging activities of polylactic acid/poly(butylene adipate-co-terephthalate)/thermoplastic starch-peppermint oil (PLA/PBAT/TPS-PO) and polylactic acid/poly(butylene adipate-co-terephthalate)/thermoplastic starch-clove oil (PLA/PBAT/TPS-CO) films for 2,2-diphenyl-1-picrylhydrazyl were 56.0% and 91.3%, respectively. However, the PLA/PBAT/TPS-PO film was more effective in reducing polyphenol oxidase activity and maintaining the total phenol content of straw mushrooms, demonstrating better antioxidative activity. Mushrooms packaged with the PLA/PBAT/TPS-PO film exhibited the lowest autolysis rate (42.29%, p < 0.05) after 96 h of storage. Thus, PO is a good preservative agent for straw mushroom.
草菇（Volvariella volvacea）的短期货架期是一个重大挑战，阻碍了它们的广泛销售。因此，本研究的目的是开发一种由精油（EOs），特别是丁香油（CO）和薄荷油（PO）组成的新型活性包装，以减少草菇的自溶。对薄膜的形态特征、机械性能、阻隔性能和抗氧化活性进行了表征。在16±1°C下储存96小时期间，评估了精油对草菇自溶的抑制作用。结果表明，添加精油会削弱薄膜的机械性能和阻隔性能。聚乳酸/聚（己二酸丁二醇酯-对苯二甲酸丁二醇酯）/热塑性淀粉-薄荷油（PLA/PBAT/TPS-PO）和聚乳酸/聚（己二酸丁二醇酯-对苯二甲酸丁二醇酯）/热塑性淀粉-丁香油（PLA/PBAT/TPS-CO）薄膜对2,2-二苯基-1-苦基肼自由基的清除活性分别为56.0%和91.3%。然而，PLA/PBAT/TPS-PO薄膜在降低草菇多酚氧化酶活性和维持草菇总酚含量方面更有效，表现出更好的抗氧化活性。用PLA/PBAT/TPS-PO薄膜包装的草菇在储存96小时后自溶率最低（42.29%，p<0.05）。因此，PO是草菇的一种良好保鲜剂。
