In ethanol extract for example the amount of eieosenoic acid and ricinoleic
acid is greater than that of these acids in the acetone extract while the percentage yields of palmitic, palmitoleic, stearic, oleic, linoleic, and linolenic acids are greater in acetone extracts than in the ethanol extracts (Table 6).
Differentiation of Malassezia species: selectivity of Cremophor-EL, castor oil and ricinoleic
acid for M.
Sulphonated castor oil is used for dyeing and preservation of leather, production of Ricinoleic
acid (polyamide resin) and in biodiesel studies (Anonymous, 2009; Ombrello, 2009).
The main component of the castor oil-based formulation is ricinoleic
acid, an omega-9 unsaturated fatty acid that immediately spreads over the aqueous layer (SIMMONS et al.
Differentiation of Malassezia species: selectivity of CremophorEL, castor oil and ricinoleic
acid for M.
3 (b) -- Ricinoleic
acid C18:1 -- -- Linoleic acid C18:2 36.
Among the tested vegetable oils, only the castor oil contained the ricinoleic
fatty acid ester, which also had the lowest levels of the esters of palmitic, oleic, linoleic and linolenic fatty acids (Table 1).
The fatty acid chain of the ricinoleic
acid contains 18 carbons and presents an hydroxyl group in the position 12 and a double bond in the position 9 and corresponds to ca.
6) Castor oil is not used as a food source and it is chiefly composed of triglycerides of ricinoleic
acid, with minor contributions from oleic, linoleic, and others.
The major component of castor oil is triglyceride of ricinoleic
acid which is decomposed by lipases in the small intestine to glycerol and ricinoleic
The weight percentage of ricinoleic
acid in castor oil was calculated as follows (equation 4).
and contained ricinoleic
acid (extracted from castor oil seed), anacardic acid, cardanol and cardol (extracted from the cashew nut shell liquid and was used vermiculite for the essential oil solidification).