Isano oil

from Wikipedia, the free encyclopedia
Isano oil, boleko oil
Isano, Boleko fruits
Raw material plant (noun)

Ongokea gore

origin

Seeds

colour

reddish yellow

ingredients
Oleic acid 14%
Linoleic acid 5%
More fatty acids 6% (saturated C14,16,18),
32-36% isanoic acid (18: 3-delta-9a, 11a, 17),
12.5-15% isanoic acid (8-OH-18: 3-delta-9a, 11a, 17),
10% (18: 2-delta-9a, 11a),
6% (18: 4-delta-9a, 11a, 13t, 17),
exocarpic acid (18: 3-delta-9a, 11a, 13t ),
Ximenic acid (santalbinic acid) (18: 2-delta-9a, 11t),
threo - dihydroxystearic acid ( R 9, R 10-di-OH-18: 0)
epoxystearic acid (18: 0-9,10-O)
as well as several 8-OH fatty acids
properties
density 0.973-0.984 kg / L at 20 ° C; 0.96-0.963 kg / l at 40 ° C
viscosity = 700-1000 mPa · s at 25 ° C
Melting point below −20 ° C
Iodine number 140-230
Saponification number 187-206
Manufacturing and Consumption
Most important production countries Congo

General chemical structure of fats , such as Stillingia oil (R 1 , R 2 and R 3 are alkyl or alkenyl radicals with a mostly odd number of carbon atoms): triester of glycerine.

Isano oil or Boleko oil, also ongokea oil , is a vegetable oil from the seeds of the West and Central African tree Ongokea gore from the family Olacaceae , in the order of the sandalwood-like . Isano oil differs in its composition and properties from most other vegetable oils, because the triglycerides consist practically only of unusual fatty acids with multiple triple bonds and hydroxy fatty acids.

The reddish yellow, viscous and very heavy isano oil has a tran- like odor.

The isano oil must be treated by heating between 150 ° C and 300 ° C, otherwise no drying properties will be achieved, although it has a high iodine number. For example, if isano oil is heated above 200 ° C, it reacts violently due to the rapid thermal polymerization of acetylenic acids, and it can explode.

It is used for (fire-retardant) varnish , varnish, paint, linoleum and casting molds, it can also be used as a deicing agent for aircraft.

Individual evidence

  1. ↑ a b Gustav Hefter: Technology of fats and oils. Volume 2, Springer, 1908, ISBN 978-3-662-01825-5 (reprint), p. 147 f.
  2. ↑ RC Badami, FD Gunstone: Vegetable oils. XIII. — the component acids of isano (boleko) oil. In: J. Sci. Food Agric. 14 (12), 1963, pp. 863-866, doi: 10.1002 / jsfa.2740141203
  3. ↑ JK Ntumba, L. Collard, KM Taba et al .: Isolation of a Series of Fatty Acid Components of Ongokea gore Seed (Isano) Oil and their Detailed Structural Analysis. In: Lipids. 50 (3), 2015 pp. 313-322, doi: 10.1007 / s11745-014-3984-6 .
  4. ↑ Ongokea gore at PlantFA Database, accessed November 26, 2017.
  5. ↑ a b c W. Heimann: Fette und Lipoide (Lipids). Springer, 1969, ISBN 978-3-642-46190-3 (reprint), p. 95.
  6. ^ Paint, Oil and Chemical Review. 122, Trade Review Company, 1959, p. 8.
  7. ↑ Ullmann's Encyclopedia of Technical Chemistry. Volume 23, 4th edition, 1983, p. 442.
  8. ^ Research Association of British Paint, Color and Varnish Manufacturers: Oils for the paint industry. 1951, p. 55.
  9. ^ Oil and Color Chemists Association of Australia: Surface Coatings. Vol. I, Springer, 1983, ISBN 978-94-011-6942-4 , p. 24.
  10. ^ A b H. AM van der Vossen, GS Mkamilo: Plant resources of tropical africa. 14: Vegetable oils , PROTA, 2007, ISBN 978-90-5782-191-2 , p. 127 f.