Groundnut Oil Machine Manufacturers
Connect with verified groundnut (peanut) oil machine manufacturers on Towobo. Source groundnut oil presses, extraction equipment, and complete groundnut oil processing lines for small and large-scale peanut oil production.
Groundnut oil processing — specific considerations
Groundnut (peanut) oil processing shares many similarities with other vegetable oil processing but has several specific requirements. The groundnut kernel has a relatively high oil content (45–52% oil in the kernel), making mechanical pressing efficient. Aflatoxin contamination is the most significant food safety risk in groundnut processing. Aflatoxins are mycotoxins produced by Aspergillus fungi that grow on groundnuts under humid storage conditions. They are carcinogenic and regulated at very low levels (typically 4–10 ppb total aflatoxin for food use) in most markets. Sorting by optical colour sorter and UV detection of contaminated kernels before processing is the primary intervention to reduce aflatoxin in groundnut oil and groundnut cake. Aflatoxins are not destroyed by conventional refining processes, though they are significantly reduced during the RBD refining stages. Starting with low-aflatoxin raw material is the primary food safety control. The groundnut cake by-product (40–45% protein after full oil extraction) has high value as an animal feed ingredient — its aflatoxin content must also be within permitted limits for the intended feed application.
Frequently asked questions
How is aflatoxin managed in groundnut oil production?
The primary controls for aflatoxin in groundnut oil production are: (1) sourcing groundnuts from suppliers with verified good agricultural practices and low-aflatoxin raw material; (2) proper post-harvest drying to below 10% moisture before storage; (3) hygienic, cool, dry storage to prevent mould growth during storage; (4) optical and UV-based sorting of kernels before processing to remove visibly mouldy and fluorescent (aflatoxin-contaminated) nuts; (5) regular sampling and laboratory testing of incoming groundnuts for total aflatoxin; (6) full RBD refining of the crude oil significantly reduces (but does not eliminate) aflatoxin in the refined oil. Buyers should request aflatoxin test certificates for groundnut oil and cake, and should not rely solely on visual inspection to verify raw material safety.
Can I produce both groundnut oil and peanut paste (peanut butter) from the same line?
Groundnut oil production and peanut butter / peanut paste production are separate processes. Peanut butter requires roasting the shelled, skinned kernel, then grinding to a smooth paste — no oil extraction occurs (the oil remains in the product as part of the finished paste). For a plant producing both products, you would need separate roasting and grinding equipment for peanut paste in addition to the oil pressing line. Some small-scale operations extract a proportion of the oil to produce a reduced-fat peanut paste, but this is a niche application. The two processes are independent and share only the raw material (groundnut kernels) as a common input.