Milk film and production method thereof
A production method and technology of milk skin, which is applied in the production process of traditional dairy products, can solve the problems of affecting the taste of milk skin, single nutritional content, high water content, etc., and achieve the effect of long shelf life, good rehydration and crisp taste
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Embodiment 1
[0035] 1. Raw material processing: select fresh milk that meets the testing standards, filter to remove large particles, and use it as raw milk for later use;
[0036] 2. Emulsion embedding: based on the weight of the raw milk, add 8wt% syrup, 1wt% sodium caseinate, and 0.8wt% β-cyclodextrin (you can first dissolve it with a small amount of milk), and place it in high-shear emulsification In the machine, the stirring speed is controlled at 2500-3000 rpm, and the raw milk is emulsified and embedded, and the emulsification temperature is kept at about 70°C for 15 minutes;
[0037] 3. Concentration: After the emulsified milk is homogenized, it is vacuum concentrated to 25% of the mass of the emulsified milk to become concentrated milk;
[0038] 4. Pre-freezing: Weigh 220 grams of the concentrated milk and pour it into a 15cm x 21cm stainless steel plate. The liquid level does not exceed 0.6cm. Send it to the freezer for pre-freezing. The freezing rate is controlled at about 0.5-1...
Embodiment 2
[0044] 1. Selection of raw materials: select fresh milk that meets the testing standards, filter to remove large particles, and use it as raw milk for later use;
[0045] 2. Emulsion embedding: Based on the above raw milk weight, add 10wt% syrup, 2wt% sodium caseinate, 0.5wt% β-cyclodextrin (can be dissolved with a small amount of milk first), and place in high-shear emulsification In the machine, the stirring speed is controlled at 2500-3000 rpm, and the raw milk is emulsified and embedded, and the emulsification temperature is kept at about 72°C for 13-15 minutes;
[0046] 3. Homogenize the emulsified milk and condense it to 30% of the mass of the emulsified milk to become concentrated milk;
[0047] 4. Pre-freezing: Weigh 200 grams of concentrated milk and pour it into a stainless steel plate. The liquid level is about 0.5 cm, and send it to the freezer for pre-freezing. The freezing rate is controlled at about 2°C per minute, and the pre-freezing time is about 35 minutes. ...
Embodiment 3
[0052] The industrialized milk skin obtained in embodiment 1 is compared with the milk skin in the prior art, and the detection index and data are as follows:
[0053]
wet milk
Vacuum packaging prepared by traditional methods
Naipizi
The freeze-dried milk skin of embodiment 1
4 months under refrigeration
6 months at room temperature
More than 1 year under normal temperature conditions
18%
8%
6% or less
Total number of bacteria,
cfu / g
100000
50000-100000
1000-10000
MPN / 100g (recently
like value)
90
90
30
color
yellow
yellow or yellowish
milky white
Taste
Soft, pure milk flavor,
Slight smell
Crisp, slightly oxidized
Crisp, pure milk flavor,
Smooth and delicious, no smell
[0054] The above vacuum-packed mil...
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