Nutrition and Health Products

(1)Filtration An equal amount of distilled water was added to the royal jelly, stirred well, and then filtered through a 100 mesh nylon gauze to remove impurities therein. The filtered royal jelly is placed in a tray of a vacuum freeze dryer, and the royal jelly has a thickness of 8 to 10 mm or is placed in an ampoule. Do not seal it and put it in the freeze-drying room.

(2)Vacuum low-temperature drying starts the vacuum freeze dryer, reduces the temperature of the vacuum drying chamber to 40 C, freezes the royal jelly quickly, and then controls the vacuum to about 133 kPa, keeping the temperature of the queen slurry at around 25 C. The temperature is controlled at ~50 C, which creates a large vapor pressure difference and promotes water vapor discharge. At the same time, the components of the freeze-drying chamber are heated and transferred to the tray to promote moisture sublimation. After the vacuum is low for about 12 hours, the water in the royal jelly has been reduced to about 10%. At this time, the purpose of drying has been initially achieved, but it cannot be stored for a long time and must be dried. At this time, the temperature of the drying chamber can be increased to 30 ° C, the maximum is not more than 40 ° C, lasting 4 to 5 hours, allowing the water to evaporate quickly, so that the moisture content of the royal jelly is reduced to about 2%, that is, the drying process is completed.

(3)The pulverization of the royal jelly which is directly added to the drying chamber for lyophilization without adding water usually takes only 12 hours to complete the drying process. However, after dehydration, the texture is hard and forms a block, which needs to be pulverized and sieved to make it easy to use. Sometimes, some medical starch is added to the royal jelly and then freeze-dried. This product is often in the form of a knot, which cannot be recovered by adding water. After being crushed and sieved, it can be used as a raw material for processing royal jelly capsules and tablets.

(4)Package preservation Royal jelly lyophilized powder has strong hygroscopicity, and the sealing must be carried out in a room with a relative humidity of less than 60%. Therefore, the workshop that performs this operation should be equipped with an air conditioner and a dehumidifier. Both the dispensing seal and the ampoule seal need to be carried out quickly, preferably with a vacuum seal or a nitrogen filled seal.