加工工艺参数对水产颗粒料耐水性的影响

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。

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

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.