The Processing Of Sesame Oil
In recent years, there is a trend of cold pressing sesame seeds. In Europe, sesame seeds are usually extracted three times. The first time is cold press, filtered oil quality is particularly clear, is high grade grease, can be eaten immediately. It has a light color and a fragrant taste. The second is to press the remaining part of the high-pressure press, the oil color is darker, before the need to refine. The remaining residue was prepared for a third time under similar conditions, and the resulting oil was of low quality and not suitable for human consumption. So the oil from the third press is used in industries such as soap
Introduction to sesame and sesame oil
Sesame is one of the oldest oilseed crops in the world. Sesame oil is refined from sesame, has a special fragrance, so called sesame oil.
2.The processing technology
The main processing technology of sesame oil: water substitute method, pressing method (press or leach) and enzyme method.
1) pressing method
Press method is through specific craft, press with machine to make, have distinctive sesame oil fragrance, use and small grind balm oil are same. The flavor of ordinary sesame oil is light, not as strong or significant as that of lightly ground sesame oil or sesame oil. Generally used as cooking oil, can also be used as seasoning oil and make cakes, candy, food the main accessories.
Oil production process is as follows:
Sesame → filter → rinse → fry seeds → press → filter → refined oil
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Sesame cake
Note: due to the high oil content of sesame, it is not suitable to directly use solvent extraction. Water was extracted by 9%, the press temperature was 65℃, the press was pressed 5 times, and the press shaft speed was 30r/min.
Advantage：High oil yield; Simple process, low labor intensity, environmental protection, industrialization
3. Physical and chemical indicators and efficacy of sesame oil
Color: finely ground sesame oil red ≤11, brownish red, bright appearance; Press sesame oil requirements red ≤16, so the color is dark red.
Heating test at 280℃ : sesame oil without precipitating, clear and transparent; Press balm oil to allow precipitation, dark hair turd.
Gas taste: have sesame oil special flavor material, fragrance.
Sesame oil is mainly composed of unsaturated fatty acids, accounting for 85% ~ 90%, oleic acid and linoleic acid basically accounted for 50% each. Sesame oil is stable and easy to preserve because it contains sesame acid, a natural antioxidant. Sesame oil also contains protein, sesamin, vitamin E, lecithin, cane sugar, calcium, phosphorus, iron and other minerals, is a kind of very nutritious cooking oil, can delay aging, beauty, such as edible sesame oil to protect blood vessels, runchang purge, relieve a cough and alcohol, tobacco, poison, protect throat, treat rhinitis and so on are uncommon
