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2, rinse. Wash the selected Li Guo with clean water, boil it in 0.5% to 1.5% sodium hydroxide solution for 5 to 15 seconds, or boil in boiling water for 10 to 12 seconds to dissolve the fruit surface wax. When the epidermis is slightly cracked, remove it and rinse with clean water.
3, color protection. The rinsing of Li Guo, put 0.2% to 0.3% of sodium sulfite (or potassium sulfite) solution or 0.1% to 0.2% of sulfurous acid solution (PH value of about 3) soak for 30 minutes to protect color.
4, salting. Put the color-protected Li Guo into salt pond (made of cement or stone) and salt it. According to the ratio of 15 kg to 20 kg of salt in 100 kg of plum fruit, first put a layer of salt in the bottom of the pool, and then a layer of fruit is layered in layers of salt. The top surface of the fruit is covered with a layer of salt and then covered with bamboo. The curtain is pressed with heavy objects to prevent the plum fruit from floating during the pickling process. Generally pickled for 18-25 days.
5, drying. Remove the pickled Lee fruit, drain the water, and spread it on bamboo curtains to dry it. It is advisable for Li Guo not to press water, remove the nucleus, and be flexible. Then, the fruit that is too big, too small or too wet or agglomerated will be picked up and left to pass the following processing.
6, softening. In order to make Lee dry moisture consistent inside and outside, soft texture, the dry Lee dry pile up, with strict cover plastic film, or into a closed container, soft in the storage room, usually takes 3 to 5 days.
7, sterilization. There are two methods of sterilization, one is high-pressure sterilization, the dry steam treatment of Li Gan 3 to 5 minutes; the second is to use dry weight of 0.25% of sulfur dioxide to fumigate 1.5 to 2 hours.
8, packaging. Common packaging containers include tin-iron cans, cartons, polyethylene bags, etc., which are mainly cartons. Padded 1-2 layers of moisture-proof paper or wax paper in the carton, wrap the dried fruit with paper, or apply waterproof paint such as lacquer, cheese emulsion, paraffin wax, etc. on the inner wall of the box, and then load the dry trunk into the box according to the specified weight. , And then cover the package with liner paper Yan, sealed, stored in a low temperature, low humidity. General requirements for air relative humidity 20%, temperature below 14 °C.
1, the choice of materials. Choose 89 mature, uniform color, uniform size, no mildew, no insects, fresh and complete plum fruit as raw material.