包装内初始氧对米威化饼干货架期的影响  

Effect of initial oxygen in package on shelf life of rice wafer

作　　者：钱奕含 卢立新 潘嘹 卢莉璟 QIAN Yihan;LU Lixin;PAN Liao;LU Lijing(School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment Technology,Wuxi 214122,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《食品与发酵工业》2020年第8期136-141,共6页Food and Fermentation Industries

基　　金：国家重点研发计划资助项目(2016YFD0400701-07)。

摘　　要：为了探讨包装内氧气浓度对一种易氧化的新型食品--米威化饼干的货架期影响,该研究设计了4种不同包装内氧气浓度条件,并在50℃下对此产品进行了加速试验,测试了产品的过氧化值(peroxide value,POV)、色差及感官变化。除此之外,通过测试不同储存温度条件下米威化的POV变化,建立了常氧下米威化货架期预测模型。试验结果表明,产品的POV随着时间延长而升高,且包装内氧气浓度越低,POV变化速率越低。50℃下,常氧包装的产品在第37天超过国标规定POV(0.25 g/100g),而真空包装的产品42 d的POV仅为0.088 g/100g,根据国标规定值预测货架期为83 d,氧气浓度对产品货架期影响显著。色差整体呈波动上升,感官品质随时间延长而下降。该产品常温常氧下预测货架期为107 d。该研究建立了在大气组分条件下米威化饼干的货架期预测模型,预测误差在±10%之内,为此产品的抗氧化包装设计提供了理论依据。Rice wafer is a new kind of food which is easy to be oxidized.To investigate the effect of oxygen concentration in package on shelf life of rice wafer,the influence of different oxygen concentration in package on the accelerated shelf life of rice wafer was studied.In addition,by testing the peroxide value(POV),chromatic aberration and organoleptic changes of the product,a rice wafer shelf life prediction model indicated by POV was established.The results showed that the POV of rice wafer increased with time,and the lower the oxygen concentration in the package the slower the rise of POV.At50℃,the POV of the product under normal oxygen exceeded the national standard(0.25 g/100 g)on the 37 th day,while the POV of the product under vacuum packaging was only 0.088 g/100 g on the42 nd day and the shelf life was predicted to be 83 days according to the national standard.The oxygen concentration had a significant impact on the shelf life of rice wafer.The chromatic aberration fluctuated and increased,and the sensory indexes decreased with the extension of time.The predicted shelf life of this product is 107 days under normal oxygen at 23℃.The shelf life prediction model of rice wafer was established under the condition of atmospheric components and the prediction accuracy was within±10%.This study provides a theoretical basis for the antioxidant packaging design of the product.

关 键 词：米制品 威化饼干 货架期 氧化 初始氧 

分 类 号：TS213.22[轻工技术与工程—粮食、油脂及植物蛋白工程] TS206.2[轻工技术与工程—食品科学与工程]