聚乳酸
抗氧化剂
采后
食品科学
保质期
化学
抗坏血酸
聚己内酯
食品保存
植物
生物化学
聚合物
有机化学
生物
作者
Chong Shi,Donglu Fang,Chaobo Huang,Aying Zhou,Tao Lü,Junying Wang,Yuxuan Song,Lianfei Lyu,Wenlong Wang,Weilin Li
标识
DOI:10.1016/j.postharvbio.2023.112300
摘要
In this study, an electrospun nanofibrous material, based on polylactic acid (PLA) and polycaprolactone (PCL) and containing an oregano essential oil (OEO)/β-cyclodextrin (β-CD) inclusion complex, was developed for active packaging. The effects of nanocomposite packaging on the preservation quality and antioxidant activity of blackberries were investigated. The OEO@ β-CDs/PLA/PCL nanofiber packaging maintained the appearance of the blackberries and inhibited color deterioration with a* of 0.21 and total color difference of 2.03 on day 10. At the end of storage period, the decay rate was 27.8% and weight loss was 3.56% in OEO@ β-CDs/PLA/PCL, lower than those of other treatments. OEO@ β-CDs/PLA/PCL delayed the softening of the blackberries, which the firmness was 6.78 N on day 10. Moreover, other preservation quality losses were also mitigated by OEO@ β-CDs/PLA/PCL, with total soluble solid of 8.94, soluble protein of 14.03 g/kg and ascorbic acid of 0.195 g/kg on day 10. The nanofibrous film maintained the activity of antioxidant enzymes and inhibited oxidative damage in the microstructure with a low H2O2 content of 0.13 mol/kg. During the postharvest period, the OEO@ β-CDs/PLA/PCL nanofibrous material inhibited postharvest decay and deterioration, loss of nutritional quality and oxidative damage of the blackberries, thereby demonstrating the potential of nanocomposite materials for fruit storage.
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