HISTORY OF OIL PAINT Till 1991 nothing was known on the organic part of parietal paintings from the Paleolithic time. Many assumptions were […]
SEVEN IMPORTANT OILS 1 – Arachis or peanuts seeds reached in the world the mark of 5.2 million tonnes during 2011/12. The main […]
MAIN WORLD SOURCES OF OILS Around the world, it must be noticed that about 140 million tons of vegetal oils were produced in […]
FATTY ALCOHOLS Aliphatic alcohols occur naturally in free form (component of the cuticular lipids) but more usually in esterified (wax esters) or […]
FATTY ACIDS Carboxylic acids occur in many molecular forms. At first It must be recalled that if the majority of the […]
MONOENOIC FATTY ACIDS In his classic studies on fatty acids from pork fat, Chevreul (1823) recognized the nature of oleic acid but it […]
HYDROCARBONS These compounds form the simplest form of lipids, they contain only carbon and hydrogen. They may be divided into aliphatic hydrocarbons with […]
POLYENOIC FATTY ACIDS These fatty acids (also called polyunsaturated fatty acids, PUFA) have 2 or more cis double bonds which are the […]
PLANT OILS AND FATS All plants contain oils (ex. olive oil) or fats (ex. cocoa butter) and mainly in their seeds. As an […]
FATTY ACIDS Carboxylic acids occur in many molecular forms. At first It must be recalled that if the majority of the […]