Objective : "To find out of which Vegetable Oil or Nut Oil have the most level of vitamin A, E, D and the most nutrient"
Reason for determining vitamin : There are Vitamin A, D, E and K are oil - soluble while the others are water - soluble. And we found out that Vitamin K have less effect on skin and hair so we determine Vitamin A, E and D which benefit to skin and hair and promote skin and hair to be healthy and beauty.
Method :
Vitamin A : In - house method TE-CH-024 based on Compendium of Methods for Food Analysis Thailand, 1st Edition, 2003
LOD = 7; The method could be considered Vitamin A at 7 is the lowest level, if Vitamin A is less than 7 could not be guaranteed by this method, but they can be found Vitamin A at 1 - 6 by other methods.
Vitamin E : AOCS CE 8-89. (1993)
Vitamin D : AOAC (2005), 995.05
Determined Oil :
1. Apricot Kernel Oil
2. Olive Oil
3. Grape Seed Oil
4. Avocado Oil
5. Coconut Oil
Reason for determining oil types : These oils are mostly used as base oil in many kinds of products, such as cosmetic, food, medical, skin products, etc. There are rich of nutrients and contain of many kinds of vitamins.
Result :
1. Grape Seed Oil (Refined) - Italy see the test report
VITAMIN |
RESULT |
UNITS |
LOD |
| Vitamin A - Retinol |
Not Detect |
mg/kg |
- |
| Vitamin E - Alpha Tocopheral |
1257.40 |
mg/kg |
- |
| Vitamin E - Beta Tocopherol |
35.82 |
mg/kg |
- |
| Vitamin E - Gamma Tocopherol |
121.73 |
mg/kg |
- |
| Vitamin E - Delta Tocopherol |
211.47 |
mg/kg |
- |
| Vitamin E - Alpha Tocothienol |
560.96 |
mg/kg |
- |
| Vitamin E - Beta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Delta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin D |
Not Detect |
mg/kg |
- |
PARANETER |
SPECIFICATION |
RESULT |
| Description |
Luminous yellow oily liquid, almost odourless and characteristic blend taste |
pass test |
| Identification |
Complies with the standard fatty acid oil |
pass test |
| Solubility |
Slightly soluble in ethanol 96 degree, soluble in choroform and ether. Insoluble in water |
pass test |
| Density at 20 degree C |
0.910 - 0.920 |
0.919 |
| Acid Value |
Max 0.5 |
0.11 |
| Peroxide Value |
Max 5 |
1.3 |
| Saponification Value |
185 - 195 |
189 |
| Foreign fatty acid |
Negative |
pass test |
CHROMOTOGRAPHY |
FATTY ACID FRACTION |
RESULT |
| Saturated fatty acids of chain length less than C16 |
Max 0.2% |
0.04 |
| Palmitic acid |
3.0 to 8.0% |
5.52 |
| Palmitoleic acid |
Max 1.5% |
0.27 |
| Stearic acid |
Max 4.0% |
2.43 |
| Oleic acid |
58.0 - 72.0% |
62.75 |
| Linoleic acid |
22.0 - 32.5 |
28.22 |
| Linonenic acid |
Max 0.8% |
0.29 |
| Arachidic acid |
Max 0.4% |
0.11 |
| Eicodenoic acid |
Max 0.4% |
0.09 |
2. Apricot Kernel Oil (Refined) - Italy see the test report
VITAMIN |
RESULT |
UNITS |
LOD |
| Vitamin A - Retinol |
Not Detect |
mg/kg |
- |
| Vitamin E - Alpha Tocopheral |
1121.38 |
mg/kg |
- |
| Vitamin E - Beta Tocopherol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocopherol |
272.85 |
mg/kg |
- |
| Vitamin E - Delta Tocopherol |
25.67 |
mg/kg |
- |
| Vitamin E - Alpha Tocothienol |
347.62 |
mg/kg |
- |
| Vitamin E - Beta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Delta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin D |
Not Detect |
mg/kg |
- |
PARANETER |
SPECIFICATION |
RESULT |
| Appearance |
Clear oily liquid, pale yellow or greenish yellow color
|
pass test |
| Acid Value |
|
0.1 |
| Peroxides Value |
|
1 |
| Specific Gravity at 25 degree C |
|
pass test |
CHROMOTOGRAPHY |
FATTY ACID FRACTION |
RESULT |
| Saturated fatty acids of chain length less than C16 |
Max 0.1% |
pass test |
| Palmitic acid |
7.0 - 15.0% |
10.2 |
| Palmitoleic acid |
Max 3.5% |
0.8 |
| Stearic acid |
0.5 - 5.0% |
3.1 |
| Oleic acid |
56.0 - 85.0% |
75.1 |
| Linoleic acid |
3.5 - 20.0% |
8.8 |
| Linonenic acid |
Max 1.5% |
0.7 |
| Arachidic acid |
Max 0.7% |
0.4 |
| Gadoleic acid |
Max 0.5% |
0.3 |
| Behenic |
Max 0.8% |
0.2 |
| Lignoceric |
Max 0.2% |
0.1 |
3. Olive Oil (Refined) - Spain see the test report
VITAMIN |
RESULT |
UNITS |
LOD |
| Vitamin A - Retinol |
Not Detect |
mg/kg |
- |
| Vitamin E - Alpha Tocopheral |
983.57 |
mg/kg |
- |
| Vitamin E - Beta Tocopherol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocopherol |
171.80 |
mg/kg |
- |
| Vitamin E - Delta Tocopherol |
26.88 |
mg/kg |
- |
| Vitamin E - Alpha Tocothienol |
514.20 |
mg/kg |
- |
| Vitamin E - Beta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Delta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin D |
Not Detect |
mg/kg |
- |
PARANETER |
SPECIFICATION |
RESULT |
| Appearance |
Yellowish to green oily liquid, almost odourless and characteristic blend taste |
pass test |
| Identification |
Complies with the standard |
pass test |
| Solubility |
Slightly soluble in ethanol 96 degree, soluble in choroform and ether. Isoluble in water |
pass test |
| Relative density at 20 degree C |
0.910 - 0.926 g/cm3 |
0.921 |
| Acid Value |
Max 0.5 |
0.05 |
| Peroxide Value |
Max 10 |
1.7 |
| Saponification Value |
182 - 194 |
190 |
CHROMOTOGRAPHY |
FATTY ACID FRACTION |
RESULT |
| Palmitic acid |
6.0 - 8.0% |
6.12 |
| Palmitoleic acid |
< 0.5% |
0.07 |
| Stearic acid |
3.0 - 6.0% |
4.08 |
| Oleic acid |
12.0 - 27.0% |
24.64 |
| Linoleic acid |
60.0 - 76.0% |
62.78 |
| Linonenic acid and higher |
Max 2% |
pass test |
4. Avocado Oil (Refined) - Neterlands see the test report
VITAMIN |
RESULT |
UNITS |
LOD |
| Vitamin A - Retinol |
Not Detect |
mg/kg |
- |
| Vitamin E - Alpha Tocopheral |
267.80 |
mg/kg |
- |
| Vitamin E - Beta Tocopherol |
Not Detect |
mg/kg |
- |
| Vitamin E - Gamma Tocopherol |
Not Detect |
mg/kg |
- |
| Vitamin E - Delta Tocopherol |
Not Detect |
mg/kg |
- |
| Vitamin E - Alpha Tocothienol |
119.55 |
mg/kg |
- |
| Vitamin E - Beta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Delta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin D |
Not Detect |
mg/kg |
- |
PARANETER |
SPECIFICATION |
RESULT |
| Description |
Clear pale yellow oily liquid, almost odourless and characteristic blend taste |
pass test |
| Solubility |
Slightly soluble in ethanol 96 degree, soluble in choroform and ether. Isoluble in water |
pass test |
| Refractive index |
1.450 - 1.472 |
1.468 |
| Density at 20 degree C |
0.910 - 0.917 g/cm3 |
0.915 |
| Acid Value |
Max 1 |
0.28 |
| Peroxide Value |
Max 15 mew. O2/kg |
1.3 |
| Iodine Value |
75.0 - 95.0 |
80.2 |
| Saponification Value |
190 - 200 |
194.9 |
CHROMOTOGRAPHY |
FATTY ACID FRACTION |
RESULT |
| Palmitic acid |
5.0 - 25.0% |
18.20 |
| Palmitoleic acid |
1.0 - 12.0% |
8.20 |
| Stearic acid |
Max 3.0% |
0.60 |
| Oleic acid |
50.0 - 74.0% |
61.90 |
| Linoleic acid |
6.0 - 20.0% |
10.20 |
| Linonenic acid |
Max 3.0% |
0.6 |
5. Coconut Oil (Virgin) - Asia see the test report
VITAMIN |
RESULT |
UNITS |
LOD |
| Vitamin A - Retinol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Alpha Tocopheral |
Not Detect |
mg/kg |
25 |
| Vitamin E - Beta Tocopherol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocopherol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Delta Tocopherol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Alpha Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Beta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Gamma Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin E - Delta Tocothienol |
Not Detect |
mg/kg |
25 |
| Vitamin D |
Not Detect |
mg/kg |
25 |
PARANETER |
SPECIFICATION |
RESULT |
| Appearance |
Luminous yellow oily liquid, soft coconut aroma, liquid at room temperature |
pass test |
| Identification |
Complies with the standard |
pass test |
| Solubility |
Slightly soluble in ehtanol 96 degree, soluble in choroform and ether. Insoluble in water |
pass test |
| Moisture and Volatile Matter (%) |
Max 0.1% |
0.09 |
| Free Fatty Acid (% as lauric acid) |
Max 0.2% |
0.16 |
| Iodine Value |
6.0 - 14.0 |
12.3 |
| Relative density at 20 degree C |
0.88 - 0.95 |
0.9 |
| Peroxide Value |
Max 10 |
0.17 |
| Saponification Value |
248 - 265 |
260.2 |
Duration Period : June 19, 2013 - July 16, 2013
Notes :
Virgin : the oil was producted by the use of physical means and no chemical treatment.
Refined : the oil has been chemically treated to neutralize strong tastes (characterized as defects) and neutralize the acid content (free fatty acids). Refined oil is commonly regarded as lower quality than virgin oil.
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