软包装米饭、面条罐头自加热效果的影响因子研究

Study on Factors Influencing the Self- heating Efficiency of the Retort Pouch Rice/Noodle

通过在不同条件下软包装米饭或面条罐头的自加热实验,找出了影响加热效果的诸因子。实验结果表明,环境温度、软包装米饭或面条罐头的中心初温、水分含量、回生度、厚度以及加热片的重量等因子对加热效果有明显影响,而罐头的真空度没有明显影响。在室温条件下,使用相同重量的单片加热片或双片加热片,其加热效果没有显著性差异,但在5℃环境温度下,其加热效果差异显著。

Through the self- heating experiments of retort pouch rice/noodle under various conditions, it was found that there were several factors influencing on the efficiency of the self - heating. The results showed that the environmental temperature, the weight of the self- heater and the physical property of the retort pouch rice/noodle, such as its initial temperature of canned center, water content, retrogradation degree, thickness obviously effected on efficiency of the self- heating. But the effect of the vacuum of the retort pouch remains unclear. At the ambient temperature, there was no difference between the effect of the single pad self - heater and double pad self- heaters with an the identical weight. Nevertheless, the efficiency of the self-heating showed a significant difference at the environmental temperature of 5℃.