First, anion fruit fresh-keeping board carton
Korea Co., Ltd. (Shenyang) Paperboard Co., Ltd. completed the “Coverboard†project in the field-test. Under the same conditions, the shelf life of the strawberry was 5-8 ceilings, and the shelf life of the melon was increased by about 5 days. It is reported that this The “Clamming Board†project started in 2003 and invested a total of 600 million won. Now that the company’s technology development has completed about 90%, it is estimated that the end of August will be completed and the main business will start this fall. In South Korea, the increase in the cost of this "negative ion carton carton" is only 2% to 5%, so this project is a very competitive project in terms of technology and price.
According to the South Korea's official test agency, “Korea Institute of Far-Outline Evaluationâ€, the test of the paperboard samples of South Korea’s Arimori Paperboard Co., Ltd. showed that the anion value of this product is 10,620/cc. The value corresponds to about 100 times the average amount of 102/cc negative ions in the general air.
The number of negative ions that humans maintain in health is equivalent to 700/cc per cubic CM. Air is composed of numerous molecules. Due to natural cosmic rays, ultraviolet rays, soil and air radiation, some air molecules release electrons, which are usually at atmospheric pressure. Next, the released electrons soon combine with the neutral molecules in the air and become negative ions, or anions. Negative ions are negatively charged gas ions in the air. Some people refer to negative ions as "air vitamins." According to expert observations and studies, negative ions can enhance cerebral cortex function and brain activity, increase energy, improve work efficiency, and improve sleep quality. Negative ions can increase oxygen content in blood, which is beneficial to blood oxygen delivery, absorption, and utilization. It is beneficial to the recovery of patients with hypertension and cardiovascular and cerebrovascular diseases; negative ions can also increase people's lung capacity.
Second, the "electronic nose" for the preservation of fresh fruits
Food rots cause them a lot of economic losses every year. New sensors will help logistics companies control losses. The ideal solution is: Once the electronic nose informs that the goods are about to lose their freshness, the logistics company can no longer send them to a pre-arranged remote destination and deliver it to a place that is closer.
The program is effective; the basic condition for implementation is that the owner always knows the status of the goods. The German Microsystems Center intends to use the "smart container" it designed to provide relevant information. The basic element of the "Smart Container" is a chip that is installed near the goods and can reveal the main information of the goods during the transportation. It is battery-operated sensors that provide it with information on temperature and humidity inside the container.
This information is sufficient for monitoring refrigerated trucks that transport meat. However, for fruits that will gradually mature during transportation, measuring temperature and humidity alone is not sufficient to ascertain their state. Therefore, researchers plan to install gas sensors for containers that transport fruit. The sensor can determine the degree of maturity based on the scent of the fruit and calculate how many days the merchant should sell it. Researchers at the Center for Microsystems have developed prototype devices for this type of sensor. It is only the size of a cigarette box and can determine the concentration of ethylene in the air. Both tomatoes and bananas release this gas during maturation. The next task for researchers is to discuss with experts the criteria for defining quality information and integrate various devices into the system.
Third, a new type of fresh packaging box
1. Japan Hokkaido Hankan Aquatic Foods Co., Ltd. has recently developed a fresh shipping container for live shrimp. This kind of packing box adopts the structure of the lower layer. The inner layer is a watertight vinyl box. The inside of the box is filled with water and live shrimp. The foamed vinyl is used as the outer layer. There is a space of about 3cm between the two layers, which can be used to crush ice cubes. Or chemical refrigerants. The inner box is filled with seawater that has been sterilized and injected with a certain amount of oxygen. The live shrimp can be transported by placing it in water. Freshness survival rate of more than 90%.
2. A U.S. company invented a new method for keeping fresh fruits and vegetables in the packing box to reduce the oxygen and increase the nitrogen content. The method uses a new type of air conditioner with a special packing box. The packaging has a special film. The film fiber can absorb oxygen molecules and allow nitrogen to pass through. After the air enters the box through the film, the nitrogen content of the Inner Mongolia Autonomous Region is Degree can be as high as 98%, so that the respiration of fruits and vegetables to slow down, to achieve long-term preservation purposes.
3. The Japan Food Circulation System Association recently developed a new type of fresh-keeping container for fruit and vegetables, which uses a "Ristol stone" of silicate alkali as an additive for pulp. This kind of sub-stone powder has a unique adsorption effect on various gases, especially for a long period of time. The freshness of the fresh-keeping packaging box will not reduce the weight of fruits and vegetables and is suitable for long-distance storage and transportation. Another company in Japan also produced a fruit fresh-keeping packaging box that added a layer of polyethylene film on the corrugated paper liner of the corrugated carton and then applied a layer of waterproof wax coating containing trace amounts of fruit disinfectant to prevent fruit. Evaporation of water and inhibition of respiration achieve fresh-keeping purpose and the preservation period lasts up to one month.
Reprinted from: Huayin Media