The harvested fruits are so rotten and difficult to store that farmers and fruit distributors have headaches. The use of chemical preservatives also has a certain impact on human health. Self-made natural preservatives can be kept fresh and protect human health. It is not difficult to make two natural preservatives. Galangal decoction Gao Liang Jiang's antiseptic composition is mainly volatile oil, accounting for 0.5%-1.5%. Its preparation and application: take 1 kg of galangal, add 10 kg of water to boil for 45 minutes, and fully decoct the ingredients. The evaporated water is added at any time during the boiling process, so that the concoction is maintained at about 10 kilograms. The resulting concoction was filtered while hot, and then used after cooling. The extract was mixed with bleached shellac (extract: bleached shellac = 1:1.5) into a paint. After being smeared on the citrus fruit, it can be placed in a wicker basket and stored indoors at room temperature. Alternatively, the coated citrus fruit can be air-dried, wrapped with a plastic film having a thickness of 0.01 mm, and some air-permeable holes can be opened on the wrapped film and stored at room temperature. After 95 days of storage in this method, the rotting fruit rate is only 7.8%. Garlic extract garlic contains volatile oil of garlic, the main component of oil, allicin, which inhibits and kills fungi such as anthrax, thallium and rhizopus. Large standard extract preparation: fresh garlic slices immersed in cold water for 12 hours, and then cook until boiling, made of 10% garlic extract. The soaked citrus fruits are soaked in the garlic extract, and then removed after 10 minutes to 15 minutes. After ventilating and drying, put them into an empty grill wooden box with a hard paper pad, in a ventilated room or ordinary House storage. After storing for 70 days, the good fruit rate was above 92.4%. China Agricultural Network Editor
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