Our province's oil tea production areas have traditionally produced farmers oil tea oil for their own use, to give away and the habit of selling. As it is not industrially refined, it is more important to focus on quality control.

● Oil tea seed raw materials: oil tea seeds picked in a timely manner after sun drying or mechanical drying, temperature control at about 70 ℃, control the moisture content of about 10%, to prevent moldy aflatoxin and other undesirable substances. Oil tea seed special shelling machine, dryer can choose Qingtian production machinery.

● Oil tea seed pretreatment: oil tea seed steam frying should be done at low temperatures and uniform, especially when stir-frying must prevent the seeds from frying coke, to prevent the production of benzopyrene and other harmful substances.

● Tea Seed Oil Pressing: It is best to press the tea seeds after steaming and stir-frying in time when there is residual temperature, and control the temperature of the press chamber to achieve low-temperature pressing. At present, the most widely used is the screw press, the water content of the seeds is about 8% when pressing, and the temperature of the press chamber is controlled at below 90℃. The method of reducing the rotational speed can be used to reduce the friction heat. The mechanical continuous pressing time is not more than 4h, and the intermittent time is more than 1h. Seed kernel pressing can be added to the appropriate amount of edible grade friction auxiliaries, which can effectively reduce the pressing friction heating. The quality of farmhouse oil tea oil must comply with the national standard for pressed camellia oil, and the product has not been detected with aflatoxin, benzo(a)pyrene and other undesirable components.

● Oil tea oil not sold in time due to the epidemic should be sealed, protected from light, and stored at low temperatures to prevent oxidation and rancidity.

2

Oil Tea Oil Refining and Processing

Oil Tea Oil Refining and Processing is an important step in the production of quality-assured oils, but it is also a process that results in the loss of health care nutrients.

● The gross oil that did not have time to be processed should be sealed and sealed in time. The special shelling machine and dryer for oil tea seeds can be selected from Qingtian machinery.

● Optimize the temperature of the five processes of oil tea seed oil refining, with the pressure, reaction time, the amount of auxiliary materials, using the best combination of parameters refining. High-quality oil recommended refining combination process: degumming temperature from the traditional 75 ℃ to 55 ℃, acid removal from 85 ℃ to 65 ℃, decolorization from 125 ℃ to 90 ℃, deodorization from 220 ℃ to 150 ℃, dewaxing from 4 ℃ to 7 ℃; the proportion of auxiliary materials to reduce the proportion of 3-5% of the decolorizing agent; decolorization and deodorization pressure was reduced by 30