SEED OILS 1Q1 



It would seem that it might be worth while to examine the 

 seeds of other Philippine species of Shorea and also of species 

 of Hopea, as there are in the Philippines 21 species of Shorea 

 and 13 of Hopea. 



Family FLACOURTIACEAE 



Genus PANGIUM 



PANGIUM EDULE Reinw. Pangi. 



PITJOENG OIL 



A description, figure, and the local names of this species are 

 given in the section on edible plants. 



Pmigium edule has seeds which yield about 50 per cent of 

 pitjoeng, or samaun, oil having the following constants (Lew- 

 kowitsch) : 



Specific gravity 0.937 



Saponification value 178-183 



Iodine value 89.94 



Titer test of fatty acids 44.4 



According to Lewkowitsch: * 



The seeds contain a cyanogenetic glycoside of which some passes into 

 the oil w^hen it is prepared by the natives, and is only removed by pro- 

 longed boiling. The oil prepared in a very primitive fashion by the 

 natives of Java, by heating the dry seeds and passing the mass between 

 boards, is used as an edible oil. 



Hefter t says that this oil is used as an illuminant and for 

 making soap. 



Family LECYTHIDACEAE 



Genus BARRINGTONIA 



BARRINGTONIA ASIATICA (L.) Kurz. BOTONG. 



Local names: Balubitoon (Guimaras Island); bitoon (Surigao) ; boo- 

 ton, botong (Tayabas) ; boton (Tayabas, Camarines, Albay, Zamboanga) ; 

 lugo (Cagayan) ; palaupalau (Negros). 



BOTONG OIL 



Watt t states that : 



In the Moluccas a lamp-oil is said to be expressed from the seeds of 

 this plant. (Treasury of Botany.) 



* Lewkowitsch, J., Chemical technology and analysis of oils, fats, and 

 waxes, Volume 2 (1914), page 496. 



t Hefter, G., Technologie der Fette und Ole (1908), page 687. 



t Watt, G., Dictionary of the economic products of India, Volume 1 

 (1885), page 403. 



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