This double eleven, the author saw in a sales list of self-operated food products announced by e-commerce platform, the rice cake products such as scallops, snow cakes and energy 99 sticks formed a three-legged trend with potato chips and nuts. After asking a circle of friends, the author found that although most people like rice cake snacks, they can be crisp and soft, but most of them never think about their production process and equipment, and they know how to produce them. I will come together to get a comprehensive understanding.
Although the rice cake looks no different from other puffed foods, from the snow cake production line displayed by a food group in Heilongjiang, from brown rice to snow cake, it needs to go through rice immersion, milling, embryo making, cultivating, baking, etc. 39 The production process is relatively complicated. The author roughly divided these processes into three parts: raw material processing, rice cake making and packaging.
Let me talk about the raw material processing. The raw materials for rice cakes usually include brown rice, rice, etc., and these main raw materials need to be processed in the early stage of production. Generally, it includes cleaning, soaking, grinding, milling, cooking, etc., and then the raw materials are processed to reveal the prototype of the rice cake. Take the rice washing machine as an example. Washing rice is the first step to remove impurities from raw materials. There are stones and mud in the rice, and there are floating objects such as mink and rice worms. In order to achieve complete separation of debris, it is necessary to treat it separately. The washing machine is equipped with sand and gravel separators, float separators, etc., and different weight and buoyancy debris are sent out through different calibers to complete the panning of rice.
Let's talk about the making stage of the rice cake. In the author's view, the two steps of training and puffing at this stage are the key points for making the rice cake taste superior. After training, the raw materials are repeatedly trained to make the parts uniform, and promote the subsequent production and puffing. Manual training requires workers to be constantly shackled, and at the same time, the labor intensity is high, and the efficiency and direction are inefficient and the effect is not good. The twin-screw cultivator uses two mixing shafts to interweave each other to make the raw parts of the raw materials evenly mixed, which not only improves the production efficiency, but also adjusts the force of the machine to make the finished product perform better.
Puffing is also a key process in the molding of rice cakes. Screw extrusion equipment, frying and puffing equipment, baking extruders, microwave expansion equipment and other equipment can be used for rice cake making. With the increasing emphasis on food health by modern people, the means of frying and puffing has been resisted by more and more people. The baking and puffing and microwave puffing are the latecomers, and they are gradually overtaken. In the case of microwave expansion, microwave heat transfer is a non-gradient heat transfer, which can achieve internal and external uniformity during heating, avoiding external coking, but still does not meet the process requirements. In addition, the microwave expansion equipment directly acts on the material, without additional loss, and has higher thermal efficiency than other expansion methods, and is more in line with the current concept of energy saving and environmental protection.
Finally, talk about packaging. Daily experience tells us that the rice cake is sweet and crisp. Once it is left in the air for a long time, it will easily absorb the moisture in the air, making it difficult for people to swallow. Therefore, the packaging of rice cake needs to protect the shape of the rice cake while isolating the water vapor. Currently available on the market for inflatable packaging equipment are pillow packaging machines, vacuum packaging machines, and the like. With the development of intelligent equipment, such equipment can choose the order of what kind of gas to be filled when selecting the packaging on the PLC system, and then the equipment completes all the processes of rice cake packaging.
The complex process brings high yields. According to estimates, snack foods such as snow cakes and scallops can increase the value of brown rice by about 40 times. As a relatively mature category in the deep processing industry chain of brown rice, the production of snow cake and scallop can increase the value of brown rice and increase the income of producers, which has great social benefits. However, the continued development of the industry in the future requires continuous improvement and upgrading of this category, attracting the attention of consumers in the new era through changes in taste, packaging and appearance. As the main force in the production of rice cakes, food machinery and equipment also needs to respond to the call of the times to actively seek change and promote the accelerated development of the industry.
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