不同包装材料对乌龙头贮藏品质的影响

Effects of different packaging materials on the storage quality of Aralia chinensis

中文关键词:  乌龙头  包装材料  贮藏品质

英文关键词:Aralia chinensis  packaging materials  storage quality

中文摘要:

      目的 研究不同包装材料对乌龙头贮藏品质的影响。方法 以‘长白’品种乌龙头为材料, 采用不同包装材料[普通聚乙烯(polyethylene, PE)食品袋(对照)、PE气调保鲜袋、聚氯乙烯(polyvinyl chloride, PVC)保鲜袋、PVC硅窗保鲜袋]对乌龙头进行贮藏, (1±1)℃下贮藏15 d, 研究包装材料对乌龙头感官品质、腐烂指数、呼吸强度、失重率、叶绿素含量、维生素C (vitamin C, VC)含量、粗纤维含量、丙二醛(malonaldehyde, MDA)含量、过氧化物酶(peroxidase, POD)活性和多酚氧化酶(polyphenol oxidase, PPO)活性等相关生理指标的影响。结果 3种保鲜袋均可以显著延长乌龙头贮藏期, 其中PVC硅窗保鲜袋的保鲜效果最佳, 与对照(PE食品袋)相比, 呼吸高峰出现推迟3 d。贮藏至12 d时, PVC硅窗保鲜袋的叶绿素含量和维生素C含量分别是对照的2.1倍和1.9倍, 与对照相比, 感官评分提高29.1%, 腐烂指数、失重率、粗纤维含量和MDA含量分别下降86.4%、50.3%、45.8%和42.4%, POD和PPO含量分别下降了37.5%和52.7%。结论 PVC硅窗保鲜袋可显著抑制乌龙头贮藏期间感官品质和叶绿素含量的下降, 抑制其腐烂, 贮藏期延长3 d。

英文摘要:

      Objective To study the effects of different packaging materials on the storage quality of Aralia chinensis. Methods The ‘Changbai’ Aralia chinensis were treated with different packaging materials [polyethylene (PE) food bag (control), PE modified atmosphere preservation bag, polyvinyl chloride (PVC) preservation bag, PVC silicone window preservation bag] and stored at (1±1)℃ for 15 days. The effects of packaging materials on quality index such as sensory quality, decay index, respiratory intensity, weight loss rate, chlorophyll content, vitamin C (VC) content, crude fiber content, malondialdehyde (MDA) content, peroxidase (POD) activity and polyphenol oxidase (PPO) activity were studied. Results The 3 types of preservation bags could significantly prolong the storage period of Aralia chinensis, among which the PVC silicone window preservation bag had the best fresh-keeping effect. Compared with the control, the respiratory peak was delayed by 3 days. On the 12th day of storage, the chlorophyll content and VC content of the PVC silicone window preservation bag were 2.1 and 1.9 times higher than the control, respectively. Compared with the control, the sensory score improved by 29.1%, and the decay index, weight loss rate, crude fiber content, and MDA content decreased by 86.4%, 50.3%, 45.8% and 42.4%, respectively. The POD activity and PPO activity decreased by 37.5% and 52.7%, respectively. Conclusion PVC silicone window preservation bag can significantly inhibit the decrease in sensory quality and chlorophyll content of Aralia chinensis during storage, inhibit its decay, and extend the storage period by 3 days.