Pollen storage methods are: 1. Frozen storage. The dry pollen before storage is packed in a double plastic bag and the bag is sealed to prevent water absorption. For short-term storage, storage temperature is maintained at 0~5°C; long-term storage temperature is maintained at -20~-18°C. Minimize the loss of protein and vitamins in pollen and avoid moldy worms. 2. White sugar storage. Prepare small amount of pollen for self consumption. In order to prevent pollen deterioration in the short term, mix the pollen with white granulated sugar, and then put it into the bottle and compact it. Add 3 to 5 centimeters of white granulated sugar to the top layer, seal the bottle mouth, put the dark place save. 3. Mix with honey and store. A small amount of pollen can also be mixed with honey for storage, that is, adding high-concentration honey to be stored in the same pollen can achieve the purpose of preservation. Natural pollen sometimes contains some harmful microorganisms, so it must be sterilized before storage, methods are: 1. Alcohol sterilization. Use 75% to 85% alcohol to soak or spray pollen. 2. Propolis alcohol sterilization. Adding some propolis in 75% to 85% alcohol to form about 0.01% propolis solution for soaking or spraying pollen, this method is better than alcohol sterilization. 3. Frozen sterilization. Place the pollen in a temperature below -18°C for 2 to 3 days. It must be emphasized that pollen may not be subjected to high temperature sterilization, otherwise it will destroy the nutrient content of pollen.
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Pollen storage and sterilization methods