2017-04-01 13:34:21

冷冻时用物理的方式保存食品，是最早且最安全的食品保存方式之一。在开始应用时，只有品质最高的水果和蔬菜才会被挑选出来并且迅速清洗、冷冻，这些冷冻食品是天然、美味并且安全的。冷冻技术保证食品安全是通过抑制微生物的繁殖，减缓食品本身代谢来实现的，尤其是速冻技术已经被证明可以降低某些食源性污染物的风险。因此，冷冻技术作为一种食品安全技术已经在全球食品加工业中广泛应用。
Frozen in the physical way to preserve food, is one of the earliest and the most secure way of food preservation. , at the beginning of the application of only the highest quality of fruits and vegetables can be selected and cleaning, frozen rapidly, these frozen foods are natural, delicious and safe. Refrigeration technology is to ensure food safety by inhibiting microbial breeding, slow metabolism of the food itself to achieve, especially frozen technology has been shown to reduce the risk of some food-borne pollutants. Therefore, freezing technology as a food safety technology has been widely used in the global food processing industry.
根据国际上通用的定义，冷冻食品应符合以下四个条件：
According to the definition of international, frozen foods should meet the following four conditions:
1、采用营养、优质的食品原料进行前处理加工（形态处理、半成品或调理食品）；
1, nutrition, high-quality food raw materials before processing processing (form processing, semi-finished products, or food);
2、采用快速冻结；
2, using rapid freezing;
3、产品温度控制在-18℃以下，并保持在-15℃以下运输、销售并流通；
3, the product temperature control under - 18 ℃, and keep the below 15 ℃ transportation, sales and distribution;
4、安全、卫生的预包装食品。
4, safety, health, pre-packaged food.
冷冻技术的应用保证了食品的安全，不仅可以降低食物基质中水分的活性，抑制微生物和许多酶的活性，还可以降低各种生物化学反应的速度，减缓食品腐烂变质速度。同时，冷冻技术，尤其是速冻技术的应用，能最大限度地保持天然食品原有的新鲜程度、色泽、风味及营养成分，并延长食物的保存期限。如速冻后的水饺汤圆等由于在很短的时间内使得产品温度达到-18℃，食物内水分快速冻结变成细小冰晶，外观呈白色美观，处理且保存得到可达12个月以上。
The application of refrigeration technology to ensure the safety of the food, not only can reduce the food the activity of the moisture from the substrate inhibition of microbial and the activity of many enzymes, can also reduce the speed of all kinds of biochemical reaction, reducing the speed of food to rot. At the same time, freezing technology, especially the application of quick-freezing technology can keep natural food original maximum freshness, color, flavor and nutrients, and prolong the shelf life of food. Such as quick-frozen dumplings dumplings after because in a very short period of time the product - 18 ℃ temperature is reached, rapid freezing of water into a tiny ice crystals inside food, with a white and beautiful appearance, processing and preservation can be more than 12 months.

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