Chaudhary Priyanka R, Jayaprakasha G K, Porat Ron, Patil Bhimanagouda S
Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University , College Station, Texas 77845-2119, United States.
J Agric Food Chem. 2015 Jan 28;63(3):1020-8. doi: 10.1021/jf505278x. Epub 2015 Jan 14.
Modified atmosphere packaging (MAP) can extend the shelf life of salads, vegetables, and fruits by generating a storage environment with low O2, high CO2, and high humidity. The current study investigates the effect of modified atmosphere and humidity generated by two plastic films, microperforated bags (MIPBs) and macroperforated bags (MAPBs), on the levels of phytochemicals present in 'Star Ruby' grapefruits (Citrus paradisi, Macf.) stored for 16 weeks at 10 °C. Control fruits were stored without any packaging film. Juice samples were analyzed every 4 weeks for ascorbic acid, carotenoids, limonoids, flavonoids, and furocoumarins and assessed for quality parameters. MAP significantly reduced weight loss compared to control grapefruits. Control fruits had more β-carotene, lycopene, and furocoumarin compared with the fruits in MAP. Flavonoid content was highest in fruits stored in MAPB (P < 0.05), while fruits stored in MIPB showed no significant difference in flavonoid content compared to control (P > 0.05). The MAP treatments did not significantly affect ascorbic acid, limonoids, or fruit quality parameters, including total soluble solids, acidity, ripening ratio, decay and disorders, fruit taste, and off-flavors after 16 weeks of storage. These results suggest that MAP can be used to maintain the quality of 'Star Ruby' grapefruit with no detrimental effect on health-promoting phytochemicals.
气调包装（MAP）可以通过营造低氧、高二氧化碳和高湿度的储存环境来延长沙拉、蔬菜和水果的保质期。本研究调查了两种塑料薄膜，即微孔袋（MIPB）和大孔袋（MAPB）产生的气调和湿度对“星红宝石”葡萄柚（Citrus paradisi, Macf.）在10°C下储存16周后植物化学物质含量的影响。对照果实不使用任何包装薄膜进行储存。每4周分析一次果汁样品中的抗坏血酸、类胡萝卜素、柠檬苦素、类黄酮和呋喃香豆素，并评估其质量参数。与对照葡萄柚相比，气调包装显著减少了重量损失。与气调包装中的果实相比，对照果实含有更多的β-胡萝卜素、番茄红素和呋喃香豆素。储存在大孔袋中的果实类黄酮含量最高（P < 0.05），而储存在微孔袋中的果实类黄酮含量与对照相比无显著差异（P > 0.05）。在储存16周后，气调包装处理对抗坏血酸、柠檬苦素或果实质量参数，包括总可溶性固形物、酸度、成熟率、腐烂和病害、果实口感以及异味均无显著影响。这些结果表明，气调包装可用于维持“星红宝石”葡萄柚的品质且对具有健康促进作用的植物化学物质无不利影响。
