Author Name: Dishit Nathwani
Address:– Teliya Mill Gate No 2, Opp Century Market, Nr Prem Darwaja, Kalupur-06, Ahmedabad
Mobile No:- +919925125251
Groundnut Oil
One of the most essential ingredients that you use in your everyday cooking is refined groundnut oil. It's usually used for deep frying, stir-frying and seasoning. And refined groundnut oil comes packed with health benefits due to its high levels of monounsaturated fatty acids which are proven to lower LDL cholesterol–the bad cholesterol! However, refined groundnut oil should not be confused with unrefined groundnut oil , as the latter only has a small amount of monounsaturated fat. Refined groundnut oil can also come under different brand names such as refined peanut oil or refined arachis oil . So what should consumers look for when choosing refined groundnut oil? Let's take a look at some key factors below.
1) Color
The color of refined groundnut oil should be light to yellow, with a slight hazel tinge. If you see refined groundnut oil that has a dark or blackish hue, then this means that the refined peanut oil contains impurities which may have resulted from poor refining processes.
2) Smell
A refined groundnut oil with good quality should not give off an undesirable smell when opened. Refined groundnut oil should instead smell like peanuts - its natural scent. It is also important to make sure that refined groundnut oil does not smell rancid as this could be an indicator of it containing free fatty acids (FFAs). FFAs are extremely harmful and can lead to cardiovascular diseases if consumed regularly.
3) Taste
In addition, refined groundnut oil that has been extracted from good quality peanuts should also taste like peanuts. If refined groundnut oil tastes burnt or bitter, it could be due to poor refining processes. The recommended temperature at which refined peanut oil should be refined is between 160°C to 180°C (320°F - 356°F). When refined groundnut oil reaches the above temperature range during the refining stage, chemical reactions will take place and FFAs are broken down into stearic acid , oleic acid and linoleic acid . This results in refined groundnut oil that no longer tastes burnt or bitter after consumption. Good quality refined groundnut oil might also have a tasteless smell after consumption, this is normal and not a sign of refined groundnut oil going bad.
4) Longevity
Good refined groundnut oil should be stored in cool, dry places. Inexpensive refined groundnut oil tends to be refined from outdated peanuts which means that there might be impurities left in the refined peanut oil . Free fatty acids leech out from impurities when refined ground nut oil oxidizes during storage due to poor sealing or prolonged exposure to air. These FFAs can eventually turn your refined peanut oil rancid if it's not sealed properly after every use! Always store refined groundnut oil in airtight bottles so that extra oxygen cannot get in contact with the refined peanut oil .
5) Purity
The best refined groundnut oil should be refined from only one type of groundnut. There shouldn't be any traces of other types of nuts present in refined groundnut oil. If refined peanut oil is refined from different types of peanuts, then it could result in the refined peanut oil containing harmful impurities that may harm your health if consumed regularly.
6) Smell after Rain
The smell test is also extremely important when choosing refined groundnut oil as this will determine whether refined ground nut oil has gone bad or not! Refined peanut oil will emit a rancid smell if it's been left open for too long and it becomes exposed to moisture during rainfall or high humidity. You can do the smell test by placing a few drops of refined peanut oil on a dry napkin. If refined groundnut oil doesn't emit any unpleasant odours after rain, then refined groundnut oil is still good to be consumed!
7) Solidification Temperature
The solidification point of refined peanut oil will generally fall between 32°C (89.6°F) and 35°C (95°F). For refined ground nut oil which has been extracted from peanuts that are only 1 year old, this temperature range should be higher. When refined groundnut oil is refined at the correct temperature for its solidification point , it becomes clear in color and turns into a thick liquid. If refined ground nut oil has not gone through the refining process at the right temperature or if refined groundnut oil just sits around for too long, refined groundnut oil will become cloudy in color.
8) Viscosity of refined peanut oil
The correct level of viscosity for refined ground nut oil is between 725-875 centipoises. If refined groundnut oil has a viscosity higher than 1000 centipoises, then refined groundnut oil has gone bad. Refined ground nut oil that's high in viscosity is due to refined groundnut oil being stored improperly or refined at the incorrect temperature during the refining process. Once again, refining refined groundnut oil at the correct temperature plays an important role when determining if refined ground nut oil has gone rancid!
9) Microbial Counts
Good quality refined peanut oils should have a microbial count of less than 1,000 cfu/g (colony-forming units per gram). Good refined groundnut oil is refined using refined peanut oil presses which can extract refined peanut oils with low microbial counts. If refined ground nut oil has not gone through the refining process correctly or if refined groundnut oil doesn't sit around in storage long enough, refined groundnut oil may contain high levels of pathogenic bacteria like E. coli and Salmonella . This can result in severe food poisoning when refined groundnut oils are ingested!
10) Heavy Metals
The presence of heavy metals in refined groundnut oil should be monitored during the production process. You'll want to stay away from refined groundnut oil manufacturers who don't have proper refined groundnut oil refining equipment or who are willing to cut costs by using refined peanut oil presses with inferior quality . This is because refined groundnut oil manufacturers who use refined peanut oil presses made of stainless steel generally produce refined groundnut oils that are high in quality.
The presence of heavy metals in refined ground nut oil should be monitored during the production process! Always look for refined groundnut oil manufacturers who strictly adhere to food safety standards, as their refined ground nut oils will usually contain traceable amounts of dangerous heavy metals like lead and mercury , which can harm your health if consumed on a regular basis. The best way to avoid refined groundnut oil containing hazardous heavy metals is to choose your refined groundnut oils carefully!
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