Collagen casing and preparation method thereof
A technology of collagen and sausage casings, which is applied in the field of collagen casings and its preparation, can solve the problems of excessive addition of auxiliary materials and low safety, and achieve the effects of low cost, high safety, and good thermal stability
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Embodiment 1
[0040] Step S1, leather splitting and liming: sort the cowhide leather layer according to size and thickness, cut it into uniform blocks with a size of 5cm×10cm, take 1000kg of leather, wash it with clean water, and soak it in saturated lime water For 15 days, stir for 10 minutes every 30 minutes during the soaking process, and then clean the leather with clean water;
[0041] Step S2, acidifying and embellishing: Soak the liming-treated leather with 0.10N hydrochloric acid solution for 30 hours, and keep stirring to control the pH value between 2.5 and 3.0, so that the leather becomes soft, translucent and swollen shape, and squeeze the leather to make the fibers clearly visible, then drain the acid, and wash the leather with water at least twice;
[0042] Step S3, defibering: put the acidified and swollen leather into a defiberizing machine for defiberizing treatment, and grind it into a collagen sheet;
[0043]Step S4, kneading and filtering: put the collagen flakes into a...
Embodiment 2
[0048] Step S1, leather splitting and liming: sort the cowhide leather layer according to size and thickness, cut it into uniform blocks with a size of 5cm×10cm, take 2000kg of leather, wash it with clean water, and soak it in saturated lime water For 16 days, stir for 10 minutes every 30 minutes during the soaking process, and then clean the leather with clean water;
[0049] Step S2, acidifying and embellishing: Soak the liming-treated leather with 0.10N hydrochloric acid solution for 36 hours, and keep stirring to control the pH value between 2.5 and 3.0, so that the leather becomes soft, translucent and swollen shape, and squeeze the leather to make the fibers clearly visible, then drain the acid, and wash the leather with water at least twice;
[0050] Step S3, defibering: put the acidified and swollen leather into a defiberizing machine for defiberizing treatment, and grind it into a collagen sheet;
[0051] Step S4, kneading and filtering: put the collagen flakes into ...
Embodiment 3
[0056] Step S1, leather splitting and liming: sort the cowhide leather layer according to size and thickness, cut it into uniform blocks with a size of 5cm×10cm, take 2500kg of leather, wash it with clean water, and soak it in saturated lime water For 16 days, stir for 10 minutes every 30 minutes during the soaking process, and then clean the leather with clean water;
[0057] Step S2, acidifying and embellishing: Soak the liming-treated leather with 0.10N hydrochloric acid solution for 38 hours, and keep stirring to control the pH value between 2.5 and 3.0, so that the leather becomes soft, translucent and swollen shape, and squeeze the leather to make the fibers clearly visible, then drain the acid, and wash the leather with water at least twice;
[0058] Step S3, defibering: put the acidified and swollen leather into a defiberizing machine for defiberizing treatment, and grind it into a collagen sheet;
[0059] Step S4, kneading and filtering: put the collagen flakes into ...
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