加工工艺参数对水产颗粒料耐水性的影响

Effect of the processing parameters on the durability for aquatic pelleted feed

试验研究了原料粉碎粒度、调质温度、后熟化时间、入模水分和环模压缩比五个因素对水产颗粒料耐水性的影响。结果表明:①通常鱼用饲料的粉碎粒度过40目(0.425mm)≥95%、调质温度控制在85℃以上、原料入模水分在14%～16%、后熟化时间为10～15min,环模压缩比在15左右为宜;②河蟹配合颗粒饲料的粉碎粒度过80目≥90%、调质温度控制在80～90℃、原料入模水分在17%～20%、后熟化时间在20～30min、环模压缩比在18～20为宜;③对虾配合颗粒饲料的粉碎粒度过80目≥90%、调质温度控制在80～90℃、原料入模水分在17%～20%、后熟化时间在20～30min、环模压缩比在18～22为宜。

In this paper, the effects that size reduction of the raw material, the conditioning temperature, the post-cooking time, the conditioning moisture content and the compressing ratio of the die on the durability for the aquatic pelleted feed were studied. The results showed that：to obtain the higher durability,95 percent of the size reduction was under 0.425 mm;The conditioning temperature was above 85 ℃; the conditioning water content was 14%-16% and the compression ratio of the die was 15 for the fresh-water fish; For the fresh-water crab and the prawn, the correspondently indexes as above were： 90 percent of the size reduction was under 0.180 mm;The conditioning temperature was above 80-90 ℃; The conditioning water content was 17%-20% and the compression ratio of the die was 18-20, respectively. The post-cooking time was 20-30 min and the compress ratio of the die was 18-20 for the former and 18-22 for the latter.