不同材料协同蓄冷剂对草莓呼吸速率等生理指标的影响

Effects of different materials and cold storage agents on respiratory rate and other physiological indexes of strawberries

中文关键词:  包装薄膜材料  草莓保鲜  蓄冷剂

英文关键词:packaging film materials  strawberries preservation  cold storage agents

中文摘要:

      目的 研究3种不同包装材料结合蓄冷剂对草莓保鲜效果的影响。方法 采用正交实验法, 分别将表面积为300、375、450 cm2的聚乙烯(polyethylene, PE)、聚丙烯(polypropylene, PP)、聚氯乙烯(polyvinyl chloride, PVC)薄膜与不同袋数的蓄冷剂组合, 对草莓进行包装, 同时将包装后的草莓贮藏于同种环境条件下, 定期对草莓的呼吸速率、失重率、可溶性固形物、pH等进行测定, 探究各种生理指标的变化。结果 运用综合评分法分析, 最佳组合为验证组, 实验5 d后, 验证组包装的草莓的失重率为6.15%±0.20%, 可溶性固形物含量为6.00%±0.10%, pH为4.44±0.06。结论 薄膜材料协同蓄冷剂可以将草莓的贮藏期延长2~3 d。

英文摘要:

      Objective To investigate the effects of 3 kinds of different packaging materials combined with cold storage agents on the preservation effect of strawberries. Methods The polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) film with surface area of 300、375、450 cm2 and different bags of cold storage agents were matched to package the strawberries by orthogonal experiment method, and the packaged strawberries were stored under the same environmental conditions. Respiratory intensity, weight loss rate, soluble solids, pH of these strawberries were regularly measured to explore the changes of various physiological indicators. Results The best combination was the validation groupthe comprehensive scoring method, and after 5 days of experiment, weight loss rate of strawberries packaged in the validation group was 6.15%±0.20%, soluble solids content was 6.00%±0.10%, and pH was 4.44±0.06. Conclusion The storage period of strawberries can be prolonged by 2?3 days by the combination of film and cold storage agent.