摘要
通过对呼吸速率、总可溶性固形物、可滴定酸、p H值、果肉硬度、维生素 C、失重率和品质及感官指标的变化进行分析 ,研究了薄膜气调包装对枇杷 (Eriobotrya jap onica L indl.,品种 :解放钟 )果实冷藏期间呼吸和品质特性的影响 ,气调包装用的薄膜为低密度聚乙烯薄膜 (L DPE,厚度 2 0 μm) ,以打孔的低密度聚乙烯薄膜包装为对照。结果表明 ,低密度聚乙烯薄膜包装枇杷果实后 ,3～ 4d后可维持一个相对稳定的适宜枇杷贮藏的 O2 和 CO2 的气体浓度 ,即 CO2 (4.8± 0 .6 7) %,O2 (11.5± 0 .85 ) %;薄膜气调包装结合低温可明显地降低枇杷果实的呼吸速率 ;薄膜气调包装可以最大限度地减小冷藏期间的枇杷果实的失重率、果肉硬度、维生素 C、总可溶性固形物、可滴定酸和固酸比的变化 ,维持枇杷的新鲜品质 ,延长货架期。因此 ,低密度聚乙烯薄膜 (L DPE,厚度 2 0 μm)气调包装可用于枇杷的贮藏保鲜。
The influence of modified atmosphere packaging (MAP) on the sensory and quality attributes in loquats (Eriobotrya japonica Lindl.) cv. Jiefangzhong stored at 2～4℃ was investigated in order to prolong shelf life in this study. The plastic film was used: perforated low density polyethylene (Control) and low density polyethylene. The modified atmosphere reached the steady state was (4.8±0.67)% CO 2 and (11.5±0.85)% O 2. Changes in respiratory rate, total soluble solids (TSS), titratable acidity (TA), pH value, flesh firmness, vitamin C, weight loss and quality were recorded periodically for comparing the effects of the applied conditions. It is showed that the combination of a MAP and low temperature significantly reduced the respiratory rate of loquat. The quality attributes of MAP fruit were good, and MAP induced minimum differences in weight loss, firmness, vitamin C, TSS, TA and TSS/TA ratio during storage compared with control fruit, and also maintained the sensory quality at harvest of loquats at the end of storage and shelf life period. Therefore, it is feasible that MAP with a low density polyethylene (LDPE) film (thickness 20 μm) should be recommended for storing loquats.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2003年第5期147-151,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
Xiamen Science and Technology Commission Project(350 2 Z2 0 0 31 0 88)
关键词
枇杷
薄膜气调包装
贮藏
呼吸速率
品质性状
loquat
modified atmosphere packaging
storage
respiratory rate
quality attributes
