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Taizy - Model TZ - Shuliy small yogurt production line
There are more and more types of dairy products in the supermarket, and there are many varieties. This has also caused us people's troubles. Some yogurts in the supermarket are reconstituted milk. We do n’t pay attention to these issues when buying. When processing equipment sees that yogurt is almost a brand they like, they will not hesitate to pick it up and look at it. In fact, many of us do n’t know what reconstituted milk is. It is washed out with milk powder, or else a small proportion of milk powder is added, so that the nutritional content of the milk is not high, and it has no effect in yogurt. So if you drink milk, you still need to drink healthy milk that is good for your body. If you have milk and a pasture, you ca n’t act quickly. The last set of small-scale pasteurized yogurt production line allows people around you to drink authentic milk. Yogurt with milk powder.
1. Purification of raw milk The purification methods of raw materials can be divided into two types: filter purification and centrifugal purification. The corresponding equipment is filters and centrifugal milk purifiers. At present, large and medium-sized factories mostly adopt automatic slag discharge and clean milk machines.
2. Homogenization The purpose of homogenization is to prevent the fat globules from floating, improve the flavor of sterilized milk, and promote the digestion and absorption of milk fat and proteins. The homogenizer is divided into high-pressure type, centrifugal type, and an ultrasonic type. The most commonly used is a high-pressure homogenizer.
3． The sterilization methods of sterilized milk include: (1) Low-temperature long time (LTLT) sterilization method, sterilization conditions are 62 ~ 65 ° C, 30min. The equipment used in this method includes plate heat exchanger (heating), cold and hot cylinder (sterilization) Plate heat exchanger (cooling); (2) High temperature and short time (HTST) sterilization method, sterilization conditions are 72 ~ 75 ℃, 15s; (3) High-temperature maintenance sterilization method, divided into intermittent sterilization and continuous sterilization, intermittent Autoclave is used for sterilization, and hydraulic sterilizer is used for continuous sterilization; (4) Ultra-high temperature instant (UHT) sterilization method, sterilization conditions are 130 ~ 150 ℃, 0.5 ~ 15s, and the equipment used is ultra-high-temperature Plate sterilization equipment.
4． Cooling After sterilization, the milk should be cooled to below 4 ℃ immediately. The cooling equipment is different due to the sterilization method. The LTLT method should be cooled by a plate heat exchanger. In the HTST method, in the heat exchange section of the plate sterilizer, heat exchange is performed with raw milk that has just been entered at a temperature below 10 ° C and then cooled to 4 ° C (filled in plastic bags or paper containers) or room temperature ( bottled).