What is the chemical composition of groundnut oil?
Its major component fatty acids are oleic acid (46.8% as olein), linoleic acid (33.4% as linolein), and palmitic acid (10.0% as palmitin). The oil also contains some stearic acid, arachidic acid, behenic acid, lignoceric acid and other fatty acids.
What is the oil content in groundnut?
Groundnut seeds contain about 45–56% oil and 22–30% protein [2] and many beneficial nutrients such as minerals, vitamin E, folic acid, niacin and antioxidants [3], biologically active polyphenolics, flavonoids and isoflavones [4].
What is the standard saponification number of arachis oil?
The Saponification values were between 115.92 and 210.52mgKOH/g except for Lagenaria siceraria (flask shaped), L.
How much oil comes from 1 kg of groundnut seeds?
| FROM 1 KILO | YOU PRESS APP. |
|---|---|
| Niger seed: Guizotia abyssinica | 0,4 liter |
| Palm oil kernel: Elaeis guineensis | 0,5 liter |
| Peanut / groundnut: Arachis hypogaea | 0,5 liter |
| Perilla: Perilla frutescens | 0,3 liter |
What is saponification value of castor oil?
6.3. 2 Saponification number
| Oil | SN |
|---|---|
| Castor | 176–187 |
| Coconut | 242–263 |
| Corn | 187–196 |
| Cottonseed | 190–207 |
What is acid value of an oil?
The acid value is defined as the number of milligrams of Potassium hydroxide required to neutralize the free fatty acids present in one gram of fat. It is a relative measure of rancidity as free fatty acids are normally formed during decomposition of triglycerides.
How is groundnut oil made?
Peanut oil, also referred to as groundnut oil or arachis oil, is a vegetable-derived oil made from the edible seeds of the peanut plant. Though the peanut plant flowers above ground, the seeds or peanuts actually develop underground. Cold-pressed peanut oil: In this method, peanuts are crushed to force out the oil.
Which type of groundnut contains more oil?
Groundnut variety ICGV 03043 has the highest oil content of 53% among cultivars grown in India. Normal varieties have about 48%, and farmers get a higher price with every additional 1% of oil in the produce.
What is saponification and saponification number?
Saponification value or saponification number (SV or SN) represents the number of milligrams of potassium hydroxide (KOH) or sodium hydroxide (NaOH) required to saponify one gram of fat under the conditions specified.
How much percentage of groundnut produced is used for oil extraction?
The Groundnut kernels so obtained have oil content over 48%. The kernels are subjected to mechanical extraction process with the help of screw presses. The resultant cake has residual oil content changeable from 8 to 12% depending on the extent of pressing.
What kind of oil is used in groundnut?
Chemical Analyses of Groundnut ( Arachis hypogaea) Oil. Pakistan Journal of Nutrition, 8: 269-272. Arachis belongs to the family, Fabaceae, widely cultivated in the tropics and warm temperate regions of the world.
How to determine fatty acid methyl ester of groundnut oil?
Determination of Fatty Acid Methyl Ester (FAME) of groundnut oil: Fatty acid methyl ester of groundnut oil was prepared according to Christies° method (1993). 1 g of the groundnut oil was weighed and made up to the 1.5 ml mark of a test tube using hexane.
What’s the average SAP value of an oil?
Example: An oil with an average SAP value of 190 will require 190/1402.50 = 0.135 g of NaOH per 1 g of oil, 0.135 ounces NaOH per ounce of oil, or 0.135 pounds of NaOH per pound of oil. Summary:
Where do I get my saponification values from?
Our saponification values have been gathered primarily from our suppliers and product documentation. In some cases, we have relied upon outside sources. Certain SAP values will differ from those listed in other sources because SAP values can fall within a range of values acceptable for an oil/butter/lipid.
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