Refined Moringa Seed Oil

Moringa seed oil is suitable for food oil for several reasons. First, Moringa seed oil has good sensory qualities. Moringa seed oil has a low level of peroxides, has a golden yellow color at room temperature, and imparts a pleasant nutty odor similar to peanuts. Therefore, the extracted Moringa oleifera seed oil can omit or simplify steps such as decolorization and deodorization, which are indispensable in the production of most commercial vegetable oils, which is conducive to improving production efficiency and reducing production costs. Second, Moringa seed oil has good nutritional and health functions. Moringa seed oil is not only rich in potassium and magnesium, but also rich in oleic acid, which is beneficial to reduce cardiovascular diseases caused by high serum cholesterol levels. disease risk. Third, Moringa seed oil has good thermal stability. Rich in oleic acid and tocopherol endow Moringa seed oil with high heat stability, making it an ideal oil for frying.

Refined oil production process:

Degumming: Colloidal impurities in crude oil, mainly phosphorus. The presence of colloids such as phospholipids not only reduces the quality of oil, but also promotes the transitional emulsification between oil and lye in the process of alkali refining and deacidification, increasing the difficulty of separation of saponins and aggravating the loss of neutral oil. Therefore, it should be removed first. Hydration and degumming, heat up to 60°C under stirring, add water with a ratio of 1‰ in the oil, and the water temperature is slightly higher than the oil temperature. When necessary, 0.2%-0.3% of the oil weight is dissolved in water to improve the hydration effect. Adding water is the most important stage of hydration. The amount of water added, the temperature of water and oil, the speed of stirring and adding water must be carefully controlled. When hydrating, you should often use a spoon to take samples in the tank for observation, and flexibly control the amount and speed of adding water according to the situation. After adding water, when the colloidal particles start to gather, start to stir at a slow speed, and raise the temperature to 75°C. When the liquid surface shows an obvious oil path, stop stirring, and let it stand for 3-4 hours, and 4-5 hours in winter. Until the separation of the hydration oil foot and the grease is qualified, the oil foot is released, and the degummed oil enters the next procedure.

Deacidification: Oil deacidification is mainly to remove free fatty acids in crude oil, as well as a small amount of colloid, pigment and trace metal substances in oil. Deacidification operation is one of the important factors that directly affect the oil yield and quality of oil refining. The most widely used in industrial production is the alkali refining deacidification method. Pump the crude oil into the tank, stir evenly, and raise the oil temperature to 60°C. At the same time, carry out rapid stirring at a speed of 60 rpm, evenly spray the measured lye into the oil, and continue rapid stirring to fully mix it with the oil. Then change to slow stirring, and the rotating speed is 30 rev/min. At the same time, raise the temperature to 75°C. When the oil and soap particles are clearly separated and easy to precipitate, let stand for 3 hours. When the oil temperature drops to 60°C, start to filter and enter the next procedure.

Decolorization: The color of oil and some other impurities must be decolorized to meet product quality standards. At the same time, it provides more favorable conditions for deodorization and refining. Decolorization should meet the final color index of the product; remove relevant pigments and quantitative metals; further remove trace saponins, phospholipids and other colloidal impurities and some odorous substances remaining in oil; remove polycyclic aromatic hydrocarbons and residual pesticides; reduce oil quality oxidation value. Generally, activated carbon is used, and the decolorized oil is sucked into the decolorizing tank from the oil storage tank by means of vacuum, and heated to 90°C under vacuum, and the air and moisture in the oil are then removed. Then add activated carbon (the amount is based on the color standard achieved by decolorization, generally between 1-5% of the oil weight), and after the oil is in contact with the agent for about 30 minutes under the condition of sufficient vacuum stirring, cool to 70°C and pump it into the In the filter, the activated carbon is removed to obtain a decolorized oil.

Deodorization: The purpose of oily deodorization is to improve the stability of oily quality. First vacuum the deodorizing tank, when the vacuum reaches a certain level, open the oil inlet valve, use the vacuum to suck the decolorized oil into the deodorizing tank, raise the temperature in the tank to 190°C, and then pull the vacuum system, 30 minutes before the deodorizing time, the oil After the deodorization is completed, open the cooling cold door, the oil is cooled below 70°C, and the deodorized clear oil is pumped out. The gas extracted by vacuum is cooled down by the condenser to form water and enter the water-sealed pool to form circulating water for use.