充气包装对青菜冷藏品质的影响

Effect of modified atmosphere packaging (MAP) on the quality of greengrocery during the cold storage

摘要: 充气包装已成为一种有效的延长小包装蔬菜货架期的保鲜技术。目的是选择最合适的环境气调贮藏包装青菜,研究贮藏在4℃,不同的气体浓度（空气对照组、10%CO2+20%O2+70%N2、10%CO2+5%O2+85%N2、10%CO2+1%O2+89%N2、5%CO2+5%O2+90%N2、15%CO2+10%O2+85%N2）对其感官品质、叶绿素、亚硝酸盐、可溶性固形物、电导率等指标的影响。结果表明:4℃下,延长青菜货架期和保持其营养品质的最佳的气体组成为10%CO2+5%O2+85%N2。

Abstract: Modified atmosphere (MA) storage is a useful technique to extend vegetable shelf-life.The aim of this work was to select the most suitable air condition for packaging greengrocery.Samples were stored at 4℃, under different atmospheric conditions (normal atmospheric air, 10% CO2+20% O2+70% N2, 10% CO2+5% O2+85% N2, 10% CO2+1% O2+89% N2, 5% CO2+5% O2+90% N2, 15% CO2+10% O2+85% N2) , and analyzed periodically for the sensory index, chlorophyll, nitrite, total soluble solids, conductivity.The result indicated that the air composition 10% CO2+5% O2+85% N2 at 4℃ was selected as the best one to extend shelf-life and preserve the nutritive value of greengrocery.