(1) Process flow Material selection → raw material processing → beating → pre-cooking → ingredients → heating and concentration → bottling, sealing → sterilization, cooling → finished product. (2) Operation points 1 Select the material and handle the selection of ripe orange fruit. The peel is rich in pectin. It can retain proper amount of peel when processed, promote gelation, and make the product have good color and special flavor. However, the peel contains excessive skin oil, which leads to serious bitterness of the product. Therefore, the skin oil must be removed. After cleaning, use a grinder or rough metal to brush (wipe) the broken cell layer and rinse with water (can be used to extract orange essential oil). Blanching for 3 to 5 minutes, cut into several petals, peeling and removing the seeds (the seed has a bitter taste, affecting the quality of the jam). The purpose of blanching is to easily peel and reduce the bitterness of the peel (the skin needs to be soaked and bitter when it is too heavy). First grind with a crusher, then put a beater to beat. If necessary, the pulp is crushed and beaten before mixing. In addition, the pulp residue filtered from the orange juice is also a good raw material for making jam. 2 ingredients boiled to pour the pulp into the sandwich pot, first boil for 10 ~ 15min, evaporate part of the water. Then add sucrose and a little citric acid equal to or slightly less than the weight of the pulp to adjust the pH to about 3.1. Continue to heat and concentrate, and continue to stir to prevent sticking and coking. Cook until the slurry is transparent, and the boiling point is completed at 105-107 °C. Do not cook for more than 1 hour. 3 bottling, sealing, sterilization, cooling (3) The quality standard is orange-yellow and the color is the same; the sauce is thick and sucrose-free; it has the aroma and taste of orange, no burnt smell and other odor. Soluble solids ≥ 65 ° Bx. Thoracoscopic Scissor,Thoracoscopic Instruments Forceps,Thoracoscopic Instruments Straight,Vats Curved Scissors ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.shendasiaomed.com