The nutritive value of corn germ oil and its quality index


Corn germ oil

The nutritive value of corn germ oil which produced by Doing’s Machine

The unsaturated fatty acid in corn germ oil is as high as 80%-85%, including 60% linoleic acid and oleic acid; they are helpful to patients who have cardia-cerebrovascular diseas. Linoleic acid is good to skin, it can anti-aging, moisten skin, make skin to be beautiful, glamorous and dazzling .There is no cholesterol in corn germ oil, but it can dissolve cholesterol in the blood, reduce vascular sclerosis. It also can prevent and cure senility disease, such as arteriosclerosis, diabetes, hypertension,athero- arteriosclerosis, coronary sclerosis and obesity.

Corn germ oil is rich of vitamin, such as vitamin A, vitamin D, vitamin E. They are all good to human health. Vitamin A can protect skin cells and anti-wrinkle, make skin soft and tender. Vitamin D can accelerate skin metabolism, strengthen resistance of eczema, skin ulcer. It can cure skin erythema, psoriasis, alopecia areata, and cutaneous tuberculosis. It also can promote absorption of calcium, is benefit to children’s skeletal and teeth development. Vitamin E has anti-oxidation effect, so it can protect sebum and cell membrane protein, cure xerophthalmus, nyctalopia, dermatitis, and bronchiectasia. It also can promote regeneration and vigour of human cell. It has obvious effect on preventing and curing heart disease, thrombophlebitis, and reproduction functional disorder. It is beneficial to preventing cancer.

The crude corn germ oil and finished corn germ oil which produced by Doing’s machine is fit international oil quality standard.


                           Corn                                                                   corn germ

Crude Corn Germ Oil Quality Index

ItemsQuality Index
Smell and tastePossess inherent smell and taste of corn germ oil, no objectionable odor
Moisture and volatile matter(%)≤0.2
Insoluble impurity(%)≤0.2
Acid value(mgKOH/g)≤4
Peroxide value(mmol/kg)≤7.5
Solvent residual amount(mg/kg)≤100
Notice:The index of boldface is compulsive. 

Pressing Finished Corn Germ Oil and Solvent Extraction Corn Germ Oil Quality Index

ItemsQuality Index
First GradeSecond GradeThird GradeFourth Grade
ColorLovibond cells 25.4mm————Yellow 30  Red 3.5Yellow 30  Red 6.5
Lovibond cells 133.4mmYellow 30  Red 3.0Yellow 35  Red 4.0————
Smell and tasteOdor free, good tasteSmell and taste are both goodPossess inherent smell and taste of corn germ oil, no objectionable odorPossess inherent smell and taste of corn germ oil, no objectionable odor
TransparencyClear, transparentClear, transparent————
Moisture and volatile matter%0.050.050.10.2
Insoluble impurity%0.050.050.050.05
Acid valuemgKOH/g0.20.313
Peroxide valuemmol/kg557.57.5
Heating test280℃)————No precipitate, Lovibond cells: Yellow value is constant, the red value increases less than 0.4A little precipitate, Lovibond cells: Yellow value is constant, the red value increases less than 4.0, the blue value increases less than 0.5
Saponified matter content%————0.030.03
Smoking point(℃)215205————
Refrigeration teststore for 5h at 0℃)Clear, transparent——————
Solvent residual amountmg/kgSolvent extraction oilCan’t be detectedCan’t be detected≤50≤50
Pressing oilCan’t be detectedCan’t be detectedCan’t be detectedCan’t be detected
Notice 1Draw with “——”needn’t be detected. When the solvent residual amount of pressing oil, first grade oil and second grade oil is less than 10mg/kg, regard it as didn’t be detected.
Notice 2The index of boldface is compulsive.

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