Groundnut Oil Processing
Groundnut oil, a clear, light-yellow vegetable oil with a mild taste, is extracted from peanuts, which are part of the Fabaceae family. Rich in unsaturated fatty acids, it's not only a kitchen staple but also a source of high-quality nutrition. The journey of groundnut oil begins with pre-treatment, where impurities are removed, and the internal structure of peanuts is enhanced. This involves cleaning, decortication to remove hulls, grading and sorting to ensure uniformity, and drying to reduce moisture content, preparing the peanuts for efficient oil extraction.
Next, the pressing stage. Here, peanuts undergo cooking to break down cell walls, followed by pressing to extract the oil. There are two methods: high-temperature pressing for a high oil yield and cold pressing to preserve nutrients and flavor. The later also produces peanut protein powder, adding value to the by-products. The extracted oil isn't ready just yet. It undergoes refining to remove any remaining impurities. This involves degumming, neutralization, bleaching, and deodorization, ensuring the oil is of the highest quality, free from volatile components, and has a long shelf life.
Finally, the oil is stored and packaged in various materials like tin cans and PET bottles. Groundnut oil is not just a cooking ingredient; it's a nutritional powerhouse. It's high in vitamin E, essential fatty acids, and has a high biological value of protein.
