不同包装材料对大米品质的影响

Effect of different packaging material on the quality of rice

采用不同阻隔性材料对大米进行真空包装,以水分含量、脂肪酸值、直链淀粉、咀嚼性、附着性等为指标,研究高温、高湿条件下大米品质与时间的变化关系。结果表明:PA/EVOH/PE等高阻隔性材料能减轻外界不良环境对大米水分含量的影响,延缓大米脂肪酸值、直链淀粉含量变化,降低大米附着性下降速率,维持大米咀嚼性在相对稳定状态。高温、高湿条件下,高阻隔性包装材料能有效延缓大米品质的劣变,延长大米储藏期。

Rice was packed by different barrier material with vacuum packing. The relationship between rice quality and time in high temperature and high humidity conditions was studied with moisture content,fatty acid value,amylose content,chewiness,adhesion as evaluation indexes. The results indicated that the high-barrier material such as PA/EVOH/PE could reduce the effect of bad environment on the moisture content of rice,delay the change of fatty acid value and amylose content,reduce the rate of the decrease of the adhesion,and keep the rice chewiness in relatively stable. As result,high-barrier material could effectively delay the quality deterioration of rice and extend the rice storage period in high temperature and high humidity conditions.