热泵-热风组合干燥方式对干制海参品质的改善

Quality improvement of dried sea cucumber by combined heat pump and hot air method

为了提高干制海参的品质,该文在热风干燥的基础上,利用热泵-热风组合干燥的方式干燥腌渍海参,对不同干燥方式下海参的干燥特性(干燥特性曲线,收缩系数和产品品质)进行测定,对干燥结束后海参的复水品质(复水倍数,流变学参数,感官评价)与传统的热风干燥进行分析比较,结果表明:组合干燥海参的平均收缩系数最小,为16.64,而平均复水倍数为10.18,远高于热风干燥产品;产品流变学特性及硬度,弹性,柔韧度,黏性均较热风处理后海参理想。结果表明:组合干燥可以明显提高干燥后海参的复水倍数和复水品质,产品的感官品质好。

In order to improve the quality of dried sea cucumber,based on the characteristics of hot air drying,the drying characteristics（drying property curve,shrinkage property and product quality）and the rehydration quality（rehydration ratio,rheological property,sensory evaluation）of the brine salting sea cucumbers（Stichopus japonicus）by combined heat pump and hot air drying or traditional hot air drying were studied and analyzed.It was showed that the average contraction coefficient of combined drying products was the lowest,16.64;while the average rehydration rate was 10.18,which was much higher than hot drying products;and combined drying could obviously improve rheological properties,hardness,elasticity,toughness and viscosity.It is showed that combined drying could obviously advance rehydration quality,and the product get high sensory evaluation.