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walnut oil equipment

walnut oil equipment

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所属分类:Functional Oil

发布日期:2021-01-12 15:06:40

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Walnut oil is a kind of high grade vegetable oil with walnut kernel as raw material and its essence extracted by modern technology.Walnut oil is rich in unsaturated fatty acids,vitamins A,B1,B2,C,E and GA,Mg,etc.which can not be synthesized by human body.The content of unsaturated fatty acids is more than 90%,and the content of linoleic acid and linolenic acid is more than 70%.

Subcritical walnut oil equipment extraction process is as follows:

Walnut meat

To squeeze

┌──→ Subcritical extraction tank→Evaporation tank  → exsolution → Walnut oil→refining→ Walnut oil

    │         ↓      ↓                           

    │   hydrolysis   The compressor    Vacuum pump

    │                ↓         ↓      

 Solvent circulation tank←——───┴───────The compressor

Walnut oil light yellow color, low viscosity, good fluidity, a light walnut flavor. Walnut oil can be cooked or chilled. Because of the high activity of walnut oil, easy to oxidation deterioration, after opening the bottle should be eaten as soon as possible.


Walnut oil is mainly composed of fatty acids


Type of fatty acid

content/%

Palmitic acid

6.010.0

Stearic acid

2.06.04

Oleic acid

11.525.0

Linoleic acid

50.069.0

Linolenic acid

6.518.0

  Walnut kernel because of its high oil content,protein and fiber content is relatively low,so the general use of hydraulic oil press,the 70%of the oil will be cold pressed out,the crushing of the pressed cake for subcritical extraction,extraction solvent is generally butane or propane,butane mixed solvent.Extraction process parameters:Subcritical extraction process and parameters of walnut oil:
  Cake size:volume<0.5cm3
  Number of extraction:4 times
  Extraction temperature:25~35℃
  Material to solution ratio:1∶1.2~1∶1.25
  After extraction,the residual oil of walnut cake was less than 1.5%,and the nitrogen solubility index(NSI>)was 80%.

walnut oil equipment