Argan oil

Plantation of argans

Argan oil is a plant oil produced from the kernels of the argan tree (Argania spinosa L.) that is endemic to Morocco. In Morocco, argan oil is used to dip bread in at breakfast or to drizzle on couscous or pasta.

Extraction

The production of argan oil by traditional methods

The fruit of the argan tree is small, and round, oval, or conical. A thick peel covers the fleshy pulp. The pulp surrounds a hard-shelled nut that represents about 25% of the weight of the fresh fruit.

The nut contains one to three argan oil-rich kernels. Extraction yields from 30% to 50% of the oil in the kernels, depending on the extraction method.[1]

Extraction is key to the production process. To extract the kernels, workers first dry argan fruit in the open air and then remove the fleshy pulp. Some producers remove the flesh mechanically without drying the fruit. Moroccans usually use the flesh as animal feed.

The next stage involves cracking the argan nut to obtain the argan kernels. Attempts to mechanize this process have been unsuccessful, so workers still do it by hand, making it a time-consuming, labour-intensive process. Berber women often engage in this arduous task.

Workers gently roast kernels they will use to make culinary argan oil. After the argan kernels cool, workers grind and press them. The brown-coloured mash expels pure, unfiltered argan oil. Finally, they decant unfiltered argan oil into vessels. The remaining press cake is protein-rich and frequently used as cattle feed.[1]

Cosmetic argan oil is produced almost identically, though the argan kernels are not roasted to avoid an excessively nutty scent.

The decanted argan oil is left to rest about two weeks so that solids suspended in the argan oil settle to the bottom, creating a natural sediment. The clearer argan oil is further filtered, depending on the required clarity and purity. Pure argan oil may contain some sediment. This is a natural part of the production process and does not affect quality.

Properties and uses

Fatty acid Percentage
Oleic 42.8%
Linoleic 36.8%
Palmitic 12.0%
Stearic 6.0%
Linolenic <0.5%

[2]

Argan oil has a relative density at 20 °C (68 °F) ranging from 0.906 to 0.919.[3]

Argan oil contains tocopherols (vitamin E), phenols, carotenes, squalene, and fatty acids, (80% unsaturated fatty acids)[4] The main natural phenols in argan oil are caffeic acid, oleuropein, vanillic acid, tyrosol, catechol, resorcinol, (−)-epicatechin and (+)-catechin.[5]

Depending on the extraction method, argan oil may be more resistant to oxidation than olive oil.[6]

Culinary

Culinary argan oil (argan food oil) is used for dipping bread, on couscous, salads and similar uses. Amlou, a thick brown paste with a consistency similar to peanut butter, is produced by grinding roasted almond and argan oil using stones, mixed with honey and is used locally as a bread dip.

Various claims about the beneficial effects on health due to the consumption of argan oil have been made. Researchers have concluded that daily consumption of argan oil is "highly likely" to be one factor that helps prevent various cancers, cardiovascular diseases, and obesity.[7]

The results of a nutritional intervention study, in which volunteers consumed either argan oil or animal fats (butter) in their diet, were published in 2005. The results showed that—as with olive oil and some other vegetable oils—regular dietary intake of argan oil instead of butter reduced harmful cholesterol and triglycerides in the blood.[8]

Cosmetic

Moroccans traditionally use un-roasted Argan oil to treat skin diseases, and as a cosmetic oil for skin and hair:

"In cosmetics, Argan oil is advocated as moisturizing oil, against acne vulgaris and flaking of the skin, as well as for 'nourishing' the hair. This oil has also [sic] medicinal uses against rheumatism and the healing of burns. Externally, Argan oil is used for hair as brilliantine, to fortify and in the treatment of wrinkled or scaly dry skin."[9]

Argan oil has become increasingly popular for cosmetic use. The number of personal-care products on the US market with Argan oil as an ingredient increased from just two in 2007 to over 100 by 2011. It is sometimes mixed with pomegranate seed oil due to its antioxidizing benefits,[10][11] with vendors promoting this blend as an all-in-one serum both for skin and hair. Argan oil is also sold without additives as a natural skincare and hair care product.

The increasing popularity of Argan oil has prompted the Moroccan government to plan for increased production, with their aim being to increase annual production from around 2,500 to 4,000 tonnes by 2020.[12]

Impacts

Environmental

The argan tree provides food, shelter and protection from desertification. The trees' deep roots help prevent desert encroachment. The canopy of argan trees also provides shade for other agricultural products, and the leaves and fruit provide feed for animals.[3]

The argan tree also helps landscape stability, helping to prevent soil erosion, providing shade for pasture grasses, and helping to replenish aquifers.[13]

Producing argan oil has helped to protect argan trees from being cut down. In addition, regeneration of the Arganeraie has also been carried out: in 2009 an operation to plant 4,300 argan plants was launched in Meskala in the province of Essaouira.[14]

The Réseau des Associations de la Réserve de Biosphère Arganeraie (Network of Associations of the Argan Biosphere Reserve, RARBA) was founded in 2002 with the aim of ensuring sustainable development in the Arganeraie.[15]

RARBA has been involved with several major projects, including the Moroccan national antidesertification programme (Programme National de Lutte contre la desertification, PAN/LCD). The project involved local populations and helped with improvements to basic infrastructure, management of natural resources, revenue-generating activities (including argan oil production), capacity reinforcement, and others.[16]

Social

The production of argan oil has always had a socioeconomic function. At present, argan oil production supports about 2.2 million people in the main argan oil-producing region, the Arganeraie.[12]

Much of the argan oil produced today is made by a number of women's co-operatives. Co-sponsored by the Social Development Agency with the support of the European Union, the Union des Cooperatives des Femmes de l’Arganeraie is the largest union of argan oil co-operatives in Morocco. It comprises 22 co-operatives that are found in other parts of the region (e.g., Coopérative Al Amal, Coopérative Amalou N'Touyag, Coopérative Tissaliwine, Coopérative ArganSense, and Coopérative Maouriga).[17]

Employment in the co-operatives provides women with an income, which many have used to fund education for themselves or their children. It has also provided them with a degree of autonomy in a traditionally male-dominated society and has helped many become more aware of their rights.[18]

The success of the argan co-operatives has also encouraged other producers of agricultural products to adopt the co-operative model.[19] The establishment of the co-operatives has been aided by support from within Morocco, notably the Fondation Mohamed VI pour la Recherche et la Sauvegarde de l’Arganier (Mohammed VI Foundation for Research and Protection of the Argan Tree),[20] and from international organisations, including Canada's International Development Research Centre[21] and the European Commission.[18]

References

  1. 1 2 Charrouf, Zoubida; Guillaume, Dominique (1999). "Ethnoeconomical, ethnomedical, and phytochemical study of Argania spinosa (L.) Skeels". Journal of Ethnopharmacology 67 (1): 7–14. doi:10.1016/S0378-8741(98)00228-1. PMID 10616955.
  2. ↑ Khallouki, F; Younos, C; Soulimani, R; Oster, T; Charrouf, Z; Spiegelhalder, B; Bartsch, H; Owen, RW (2003). "Consumption of argan oil (Morocco) with its unique profile of fatty acids, tocopherols, squalene, sterols and phenolic compounds should confer valuable cancer chemopreventive effects". European journal of cancer prevention 12 (1): 67–75. doi:10.1097/01.cej.0000051106.40692.d3 (inactive 2016-02-01). PMID 12548113.
  3. 1 2 Charrouf, Zoubida; Guillaume, Dominique (2008). "Argan oil: Occurrence, composition and impact on human health". European Journal of Lipid Science and Technology 110 (7): 632. doi:10.1002/ejlt.200700220.
  4. ↑ Monfalouti, HE; Guillaume, D; Denhez, C; Charrouf, Z (Dec 2010). "Therapeutic potential of argan oil: a review". J Pharm Pharmacol 62 (12): 1669–75. doi:10.1111/j.2042-7158.2010.01190.x. PMID 21054392.
  5. ↑ Charrouf, Z; Guillaume, D (2007). "Phenols and Polyphenols from Argania spinosa". American Journal of Food Technology 2 (7): 679. doi:10.3923/ajft.2007.679.683.
  6. ↑ Chimi, H; Cillard, J; Cillard, P (1994). "Autoxydation de l'huile d'argan Argania spinosa L. du Maroc" [Autoxidation of argan oil Argania spinoza L. from Morocco]. Sciences des aliments (in French) 14 (1): 117–24. ISSN 0240-8813.
  7. ↑ Charrouf, Zoubida; Guillaume, Dominique (2010). "Should the Amazigh Diet (Regular and Moderate Argan-Oil Consumption) have a Beneficial Impact on Human Health?". Critical Reviews in Food Science and Nutrition 50 (5): 473–7. doi:10.1080/10408390802544520. PMID 20373191.
  8. ↑ Derouiche, A.; Cherki, M.; Drissi, A.; Bamou, Y.; El Messal, M.; Idrissi-Oudghiri, A.; Lecerf, J.M.; Adlouni, A. (2005). "Nutritional Intervention Study with Argan Oil in Man: Effects on Lipids and Apolipoproteins". Annals of Nutrition and Metabolism 49 (3): 196–201. doi:10.1159/000087072. PMID 16020940.
  9. ↑ El Babili, Fatiha; Bouajila, Jalloul; Fouraste, Isabelle; Valentin, Alexis; Mauret, Severine; Moulis, Claude (2010). "Chemical study, antimalarial and antioxidant activities, and cytotoxicity to human breast cancer cells (MCF7) of Argania spinosa". Phytomedicine 17 (2): 157–60. doi:10.1016/j.phymed.2009.05.014. PMID 19576744.
  10. ↑ Elfalleh, Walid; Tlili, Nizar; Nasri, Nizar; Yahia, Yassine; Hannachi, Hédia; Chaira, Nizar; Ying, Ma; Ferchichi, Ali (2011). "Antioxidant Capacities of Phenolic Compounds and Tocopherols from Tunisian Pomegranate (Punica granatum) Fruits". Journal of Food Science 76 (5): C707–13. doi:10.1111/j.1750-3841.2011.02179.x. PMID 22417416.
  11. ↑ Schubert, Shay Yehoshua; Lansky, Ephraim Philip; Neeman, Ishak (1999). "Antioxidant and eicosanoid enzyme inhibition properties of pomegranate seed oil and fermented juice flavonoids". Journal of Ethnopharmacology 66 (1): 11–7. doi:10.1016/S0378-8741(98)00222-0. PMID 10432202.
  12. 1 2 The trees of life. Should hairdressers be promoting argan oil? L. Siegle, The Observer, February 12, 2012, http://www.guardian.co.uk/environment/2012/feb/12/lucy-siegle-argan-oil-hairdresers
  13. ↑ Biodiversity links to cultural identity in southwest Morocco: The situation, the problems and proposed solutions. Y. Moussouris & A. Pierce, Arid Lands Newsletter No. 48, November/December 2000, http://ag.arizona.edu/oals/ALN/aln48/moussouris&pierce.html
  14. ↑ Lancement d’une opération de reboisement de 13 hectares d’arganier à Essaouira | http://www.marocagriculture.com/lancement-dune-operation-de-reboisement-de-13-hectares-darganier-a-essaouira.html
  15. ↑ Réseau des Associations de la Réserve de Biosphère Arganeraie RARBA | http://www.remess.ma/index.php?option=com_content&view=article&id=64:rarba-chef-de-fil&catid=39:pole-sud&Itemid=68
  16. ↑ Projet 1: Programme National de Lutte contre la desertification (PAN/LCD) en partenariat avec la coopération technique Allemande (GTZ)| http://www.remess.ma/Docs/Projet%20RARBA/projet1.pdf
  17. ↑ L'UCFA |http://www.cooperative-argane.com/ucfa/
  18. 1 2 The European Commission Supports Mediterranean Women: Three Tales about Making a Difference, R. Dochao | http://www.afaemme.org/studies/E3%20CM_EC%20Support_Dochao.pdf
  19. ↑ Argan oil helps Moroccan women become breadwinners | http://www.bbc.co.uk/news/business-16460127
  20. ↑ La Fondation Mohamed VI pour la recherche et la sauvegarde de l’arganier tient sa première assemblée générale à Essaouira | http://www.tanmia.ma/article.php3?id_article=1862&lang=fr
  21. ↑ Helping Moroccan Women Preserve the Argan Tree at the Gateway to the Sahara, Z. Charrouf and S. Dubé | http://www.idrc.ca/EN/Resources/Publications/Pages/ArticleDetails.aspx?PublicationID=190

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