Talk:Pentaclethra
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Moved from article
[edit]I removed the following text from the article, since it's not at all clear what species within the genus it refers to. Guettarda (talk) 23:53, 16 January 2015 (UTC)
Pentaclenthra oil
[edit]The pracaxi oil has a light yellow color, liquid at room temperature and after some time the deposit releases large amount of white solid fat.
The pracaxi oil is good for the production of soft soap and the fatty substance can be used in the preparation of candles.[1] The oil presents many similarities with peanut oil, however, Pracaxi oil contains the highest known concentration of behenic acid (19%), which is 6 times higher than the peanut oil. The behenic acid very present in Pracaxi oil is widely used for industrial production of cosmetics makeup and hair due to its excellent wetting properties.
The pracaxi oil has insecticidal properties that acts as a good fighter mosquito Aedes aegypti, which is the vector of Yellow fever and dengue.[2]
Physico-chemical data of Pentaclenthra oil
| Features | Units | Presentation |
|---|---|---|
| Appearance (25 ° C) | -- | Net |
| Color | -- | Translucent |
| Odor | -- | Peculiar |
| Acid value | mgKOH/g | < 20,0 |
| Peroxide Index | 10 meq O2/kg | < 10,0 |
| Iodine value | gI2/100g | 66 - 72 |
| Saponification | mgKOH/g | 175 - 188 |
| Density | 25ºC g/ml | 0,9173 |
| Refractive index (40 ° C) | -- | |
| Unsaponifiable Materia (bioactive) | % | |
| Melting point | ºC |
Composition of fatty acids-oil Pentaclethra
| Features | units | presentation |
|---|---|---|
| lauric acid | Weight% | 0.8 to 1.8 |
| myristic acid | Weight% | 1.0 to 1.8 |
| Palmitic acid | Weight% | 1.5 to 3.0 |
| stearic acid | Weight% | 1.5 to 3.0 |
| Oleic acid | Weight% | 40 - 50 |
| linoleic acid | Weight% | 1.8 to 3.0 |
| linoleic acid | Weight% | 2.0 to 4.0 |
| behenic acid | Weight% | 18.0 to 21.0 |
| lignoceric acid | Weight% | 13.0 to 16.0 |
| Saturated | % | 50% |
| Unsaturated | 50% |
References
- ^ PESCE, Celestino. Oleaginosas da Amazônia. –Belém: Museu Paraense Emilio Goeldi, 2009.
- ^ ÓLEO PRACACHY. http://www.amazonoil.com.br/produtos/oleos/pracachy.htm
- ^ ÓLEO PRACACHY - PRACACHY (Pentaclethra macroloba, Leguminosae-Mimosoideae).http://www.amazonoil.com.br/produtos/oleos/pracachy.htm