我国是牛肉生产和消费大国,不仅鲜肉市场庞大,牛肉制品深加工市场规模也非常可观。伴随着牛肉制品深加工市场的扩大,企业对牛肉解冻的需求也将进一步提升。如今,食品科技发展迅速,牛肉解冻技术也在持续进步中。
牛肉解冻使得肉细胞与细胞间的汁液冰晶能够慢慢溶解,留足时间让它逐渐渗入细胞中,这样牛肉才能恢复鲜肉时的状态。
China is a major producer and consumer of beef, with a huge market for fresh meat and a considerable market for deep processing of beef products. With the expansion of the beef product deep processing market, the demand for beef thawing by enterprises will also further increase. Nowadays, food technology is developing rapidly, and beef thawing technology is also continuously improving.
Thawing beef allows the juice ice crystals between meat cells to slowly dissolve, leaving enough time for them to gradually penetrate into the cells, so that the beef can regain its fresh state.
1、空气解冻 Air thawing
空气解冻法需要的时间较长,解冻过程中可溶性蛋白和血水流失严重,猪肉一般在3%,牛肉一般在5%,鸡肉达8%,所需时间大于20H。这种解冻方式下肉制品容易受污染、细菌大量繁殖、品质降低、保质期缩短。
The air thawing method requires a longer time, with severe loss of soluble protein and blood during the thawing process. Generally, pork accounts for 3%, beef accounts for 5%, and chicken accounts for 8%. The required time is greater than 20 hours. Under this thawing method, meat products are prone to contamination, bacterial proliferation, decreased quality, and shortened shelf life.
2、流水解冻 Flowing water thawing
流水解冻过程中,肉中的可溶性物质如水和蛋白质等溶于水中从而导致营养损失,水资源消耗大,所需时间大于12H。这种解冻方法肉制品容易受污染、细菌大量繁殖、品质降低、保质期缩短。
During the thawing process of flowing water, soluble substances such as water and protein in meat dissolve in water, leading to nutrient loss and high water resource consumption, requiring more than 12 hours. This thawing method makes meat products susceptible to contamination, bacterial proliferation, decreased quality, and shortened shelf life.
3、低温高湿解冻
Low temperature and high humidity thawing
虽然可以防止腐败微生物的滋生,但冻肉从-18℃到-2℃解冻至加工温度的所需时间大约在15个小时,时间长,解冻量只能根据厂房的容积决定,肉损率在4%-5%,解冻不均匀,而且解冻过程中需要大量人工,无法自动化。
Although it can prevent the growth of spoilage microorganisms, the time required for thawing frozen meat from -18 ℃ to -2 ℃ to the processing temperature is about 15 hours, which is long. The amount of thawing can only be determined based on the volume of the factory building, with a meat loss rate of 4% -5%, uneven thawing, and the thawing process requires a large amount of manual labor, which cannot be automated.
4、微波解冻 Microwave thawing
微波解冻可使解冻时间大大缩短,同时能够减少肉汁损失,改善卫生条件,提高产品质量。
江苏麦克威微波技术有限公司推出了专门用于冷冻肉的微波解冻设备。75kW/100kW微波回温解冻系统(隧道式)主要用于规模化食品加工企业和冷链过程中对冷冻肉制品的回温解冻,其解冻速度快、效率高,可以使冷冻产品迅速解冻。通常-18℃升高到-3±1℃不超过4分钟便可以完成解冻,肉损率<1%,并且解冻均匀,不会对肉类内部组织造成破坏,锁住其营养成分,保留肉类原有色泽、口感和品质,同时也避免了传统解冻设备带来的肉损率增加,节约原料。
Microwave thawing can greatly shorten the thawing time, reduce meat juice loss, improve hygiene conditions, and enhance product quality.
Jiangsu MCVEY Microwave Technology Co., Ltd. has launched a microwave thawing equipment specifically designed for freezing meat. The 75kW/100kW microwave thawing system (tunnel type) is mainly used for thawing frozen meat products in large-scale food processing enterprises and cold chain processes. Its thawing speed is fast and efficient, which can quickly thaw frozen products. Usually, thawing can be completed by raising the temperature from -18 ℃ to -3 ± 1 ℃ for no more than 4 minutes. The meat damage rate is less than 1%, and the thawing is uniform, without causing damage to the internal tissues of the meat. It locks in its nutritional components, preserves the original color, taste, and quality of the meat, and also avoids the increase in meat damage rate caused by traditional thawing equipment, saving raw materials.
麦克威915MHz微波解冻设备的优势:
1、解冻速度快
① 微波能够深入物料内部直接进行加热,不需要热传导过程,提高生产效率,大大节省解冻时间;
② 微波解冻即解即用,相较于传统解冻动则几个小时甚至十几个小时的解冻时间而言,微波解冻可以根据不同的工艺要求在几分钟内就可以解冻出可加工的解冻肉,细菌等微生物不易繁殖增长;
2、解冻均匀
微波解冻能使物料表里同时受到电磁场的作用而产生热量。所以解冻均匀性好,不会出现外热内冷的现象;
3、保证营养性
微波能够快速解冻的特点使得解冻物料能够快速经过相较于常规解冻而言细菌大量繁殖的外部环境中,避免污染,从而保持解冻物料的口味,蛋白质、氨基酸、维生素等营养成份不受破坏;
4、减少肉损率
自然解冻和水解冻都会有血水流出,肉损率在5-10%,微波解冻无血水流出,肉损率小于1%;
5、触摸屏操作
微波解冻设备采用触摸屏操作,可设定适宜于解冻工艺规范要求的电脑操作程序,实现全自动操作;
6、设备解冻成本低
微波解冻由于省去了污水处理的成本,仅仅投入设备的成本和设备维护运行的费用,在规模化的生产中,可以极大的降低解冻成本;
7、微波加热无热惯性
在解冻肉温升速率由微波输出功率(微波供能速率)大小控制,相互具有同步性;
8、设备连续运行
可靠性高解冻设备可连续24小时工作,在磁控管与加热箱之间安装了大功率环形器,延长了磁控管的寿命;
9、环保
无污水排出,省去污水处理费用;
10、安全无害
工作环境洁净微波解冻是在金属制成的封闭的解冻舱内工作,箱体和传送带可以安全冲洗。
The advantages of the MCVEY 915MHz microwave thawing equipment:
1. Fast thawing speed
① Microwave can directly heat materials inside without the need for heat conduction, improving production efficiency and greatly saving thawing time;
② Microwave thawing can be used immediately. Compared to the traditional thawing time of several hours or even more than ten hours, microwave thawing can thaw processed thawed meat, bacteria, and other microorganisms in just a few minutes according to different process requirements, which are not easy to reproduce and grow;
2. Thawing evenly
Microwave thawing can generate heat by simultaneously applying electromagnetic fields to the material surface. So the thawing uniformity is good, and there will be no phenomenon of external heat and internal cold;
3. Ensure nutritional value
The characteristic of microwave being able to quickly thaw allows thawed materials to quickly pass through the external environment where bacteria multiply in large numbers compared to conventional thawing, avoiding pollution and maintaining the taste of thawed materials. Nutrients such as protein, amino acids, and vitamins are not damaged;
4. Reduce meat loss rate
Both natural thawing and hydrolytic thawing will cause blood and water to flow out, with a meat loss rate of 5-10%. Microwave thawing will have no blood and water flowing out, with a meat loss rate of less than 1%;
5. Touch screen operation
The microwave thawing equipment adopts touch screen operation and can set computer operating programs suitable for the thawing process specifications, achieving fully automatic operation;
6. Low cost of equipment thawing
Microwave thawing, as it saves the cost of sewage treatment and only involves the cost of equipment maintenance and operation, can greatly reduce the cost of thawing in large-scale production;
7. Microwave heating without thermal inertia
The temperature rise rate of thawed meat is controlled by the magnitude of microwave output power (microwave energy supply rate), which is synchronous with each other;
8. Continuous operation of equipment
The highly reliable thawing equipment can work continuously for 24 hours, and a high-power annular device is installed between the magnetron and the heating box, extending the lifespan of the magnetron;
9. Environmental protection
No sewage discharge, saving sewage treatment costs;
10. Safe and harmless
The working environment is clean. Microwave thawing works in a metal enclosed thawing chamber, and the box and conveyor belt can be safely rinsed.