Processing method and product of selenium-rich rapeseed oil

[0032] Example 1

[0033] 1) Impurity removal: Use a fan to remove the dust and impurities in the rapeseed, sift out the small particles, clean and filter, and dry to 15% water content;

[0034] 2) Freeze-thaw microwave: send the rapeseed obtained in step (1) into a low-temperature cold storage for 4 hours, take it out and quickly raise it to 30℃, repeat it many times, the last one is low-temperature freezing, and the last one is low-temperature freezing. The rapeseed was microwaved for 15 minutes; the temperature of the low-temperature freezing was -25°C, and during the entire freeze-thaw microwave process, low-temperature freezing was performed twice and the temperature was raised once.

[0035] 3) Squeezing: drying the rapeseed after microwave treatment in step (2) to a moisture content of 10%, frying at a lower temperature and then squeezing to obtain virgin rapeseed oil and rapeseed cake after separation; The cooking temperature is 75℃ for 25min in the early stage, and the frying

[0040] Example 2

[0041] 1) Impurity removal: Use a fan to remove the dust and impurities in the rapeseed, sift out the small particles, clean and filter, and dry to 12% water content;

[0042] 2) Freeze-thaw microwave: send the rapeseed obtained in step (1) to a low-temperature cold storage for 5 hours, take it out and quickly raise it to 25°C, repeat it many times, the last time is low-temperature freezing, and the last time after low-temperature freezing The rapeseed was treated with microwave for 15 minutes; the temperature of the low-temperature freezing was -20°C, and the whole freeze-thaw microwave process included 4 times of low temperature freezing and 3 times of heating.

[0043] 3) Squeezing: drying the rapeseed after microwave treatment in step (2) to 6%, frying at a lower temperature and then squeezing to obtain virgin rapeseed oil and rapeseed cake after separation; The temperature is 60°C for 40 minutes in the early stage, and the frying temperature is 55°C for 15 minut

[0048] Example 3

[0049] 1) Impurity removal: Use a fan to remove the dust and impurities in the rapeseed, sift out the small particles, clean and filter, and dry to 10% water content;

[0050] 2) Freeze-thaw microwave: send the rapeseed obtained in step (1) to a low-temperature cold storage for 5 hours, take it out and quickly raise it to 25°C, repeat it many times, the last time is low-temperature freezing, and the last time after low-temperature freezing The rapeseed was treated with microwave for 15 minutes; the temperature of the low-temperature freezing was -20°C, and the whole freeze-thaw microwave process included 4 times of low-temperature freezing and 3 times of heating.

[0051] 3) Squeezing: After drying the rapeseed after microwave treatment in step (2), frying at a lower temperature and then squeezing to obtain virgin rapeseed oil and rapeseed cake after separation; the frying temperature is the early stage 70℃, 30min, post-frying temperature is 50℃, time is 25min.

[005