pediaPalm kernel oil, from Elaeis guineensis Jacq. (Arecaceae family), is a white, semi-solid tropical vegetable oil extracted from the fruit kernel (kernel) of the palm tree. It should not be confused with palm oil — palm oil is obtained from the fruit (mesocarp), while palm kernel oil is extracted from the kernel. With its high profile of lauric acid (45-52%), similar to coconut oil, it contributes to lather formation in soapmaking.
This article is not a product promotion. The information contained herein makes no medical claims.
Palm oil vs palm kernel oil
This distinction is critical: palm oil is extracted from the fruit and is rich in palmitic acid (40-48%), with an orange-red color. Palm kernel oil is extracted from the kernel, is rich in lauric acid (45-52%), and is white in color. Their chemical profiles are completely different — palm oil resembles olive oil, and palm kernel oil resembles coconut oil.
Chemical profile
Lauric acid 45-52%, myristic acid 14-18%, oleic acid 12-19%, palmitic acid 6-10%, caprylic acid 3-5%, capric acid 3-5%. The profile is nearly identical to coconut oil.
Botanical source and production process
Elaeis guineensis Jacq. palm kernel oil is extracted from the inner kernel (kernel within the endocarp) of the fruit, produced by cracking and pressing the kernel after fruit harvest. Global palm kernel oil production reaches approximately 8-9 million tons annually — about one-tenth of palm oil production (~77 million tons). Indonesia and Malaysia account for over 85% of production.
Place in scientific literature
Lauric acid and antimicrobial potential
Palm kernel oil's lauric acid content (45-52%) is nearly equivalent to coconut oil. Lauric acid is the most potent antimicrobial medium-chain fatty acid. In the body, it is converted to monolaurin, and monolaurin has demonstrated in vitro activity against various gram-positive bacteria, enveloped viruses, and fungi. This antimicrobial profile forms the scientific basis for the "cleansing" effect of coconut and palm kernel oil in soapmaking.
Comparison with coconut oil
While the two oils are chemically very similar, palm kernel oil typically contains slightly higher myristic acid and lower caprylic and capric acid. In practice, they can be used interchangeably in soapmaking — their SAP values are very close (palm kernel: 0.176, coconut: 0.178). Palm kernel oil is typically more economical than coconut oil.
Sustainability note
Palm kernel oil is part of the palm oil industry and subject to the same environmental concerns — deforestation, habitat loss, and biodiversity threat. RSPO (Roundtable on Sustainable Palm Oil) certification applies to palm kernel oil as well. Producers preferring "sustainable palm kernel oil" can source from RSPO Mass Balance or Segregated certified sources. The sustainability discussion in the palm oil monograph applies equally to palm kernel oil.
Properties it adds to soap
Palm kernel oil adds the same properties to soap as coconut oil: abundant, large, airy white lather (lauric acid → sodium laurate), hardness and durability, strong cleansing capacity, and white color. The scent is neutral. It is used at 15-25% concentration. At higher concentrations (30%+), it can have a drying effect on skin — should be balanced with olive oil or shea butter.
Use in soapmaking
SAP (NaOH) is approximately 0.176. It serves the same function as coconut oil: abundant lather, hardness, cleansing. Used at 15-25% concentration. It can be preferred as an economical alternative to coconut oil.
Safety profile
The CIR panel has assessed it as safe for cosmetic use. The same sustainability concerns as palm oil apply — RSPO certification is recommended for this oil as well.
Industrial applications
Beyond soapmaking, palm kernel oil has a wide range of industrial uses. In the oleochemical industry, it is used for surfactant production (sodium lauryl sulfate feedstock), fatty acid distillation, glycerin production, and biodiesel feedstock. In the food industry, it appears in margarine, confectionery fillings, and coffee creamer. In the cosmetics industry, it is used in formulations as an emollient, foam booster, and viscosity regulator. Fractionated products derived from palm kernel oil (PKO stearin and PKO olein) provide specialized fatty acid profiles for different industrial applications.
Fractionated palm kernel oil
Palm kernel oil can be fractionated (controlled crystallization) into two separate fractions: PKO stearin (solid fraction — higher lauric and myristic acid, preferred for soap and detergent production) and PKO olein (liquid fraction — higher oleic acid, preferred for food and cosmetic applications). These fractionated products provide optimized fatty acid profiles for specific application requirements.
Palm kernel stearin in soapmaking
Some industrial soap manufacturers prefer PKO stearin fraction over crude palm kernel oil. The stearin fraction contains higher lauric acid concentration, providing the soap with greater lather-forming capacity and more hardness. However, in handmade soapmaking, crude (non-fractionated) palm kernel oil or coconut oil is typically used.
Palm kernel oil or coconut oil?
These two oils can be used interchangeably in soapmaking — their chemical profiles are very similar. The choice typically depends on economic factors: palm kernel oil is more economical than coconut oil in most markets. The scent difference is minimal — both are neutral or lightly scented oils. From a sustainability perspective, both have their own environmental impacts (palm kernel: deforestation; coconut: tropical islands and climate change). RSPO-certified palm kernel oil and Fair Trade coconut oil are available for conscious choices.
The importance of palm kernel oil in the oleochemical industry
Palm kernel oil is one of the most important feedstocks in the oleochemical industry. It is used as a starting material for the production of common surfactants such as sodium lauryl sulfate (SLS) and sodium lauryl ether sulfate (SLES). This connection creates an interesting paradox: consumers demanding "SLS-free" soap are actually preferring the saponified form of palm kernel oil (sodium laurate) — in both cases, the source is the same palm tree.
Frequently asked questions
Is palm kernel oil the same as palm oil?
No — they are obtained from different parts and have different chemical profiles. Palm kernel oil resembles coconut oil (lauric acid); palm oil resembles olive oil (palmitic/oleic acid).
What does palm kernel oil do in soap?
The same function as coconut oil: abundant lather, hardness, cleansing capacity. Used as an economical alternative.
The future of palm kernel oil
The palm kernel oil industry is undergoing transformation under sustainability pressure. Alternative technologies such as laboratory-produced oils (precision fermentation), microalgae-based lauric acid production, and recycled fatty acids are being researched. However, these technologies have not yet achieved cost competitiveness at commercial scale. In the medium term, RSPO-certified sustainable palm kernel oil will remain the most practical solution.
Chailea products containing this ingredient
- Natural Activated Charcoal Soap 100 g
- Natural Hammam Soap 100 g
References
1. CIR Expert Panel. Final Report on the Safety Assessment of Elaeis Guineensis (Palm) Kernel Oil. Cosmetic Ingredient Review.
2. Mancini, A. et al. (2015). Biological and nutritional properties of palm oil and palmitic acid. Molecules, 20(9), 17339–17361. doi:10.3390/molecules200917339
3. Ong, A. S. H., & Goh, S. H. (2002). Palm oil: A healthful and cost-effective dietary component. Food and Nutrition Bulletin, 23(1), 11-22. doi:10.1177/156482650202300102
4. RSPO (Roundtable on Sustainable Palm Oil). rspo.org
5. EU Regulation (EC) No 1223/2009 — Cosmetics Regulation.