130 



PHILIPPINE RESINS, GUMS, AND OILS 



attacked by small beetles, and the oil becomes more and more 

 acid, although no change may be noticed in the appearance of 

 the kernel and oil extracted. An actual test showed that the 

 acidity of the oil was increased from 0.55 to 5.32 when the 

 kernels were stored in a cold, dry place for one month. It is 

 therefore advisable to extract the oil from fresh nuts. 



Analyses of the kernels of Aleurites moluccana show that the 

 principal constituents are oil (consisting largely of fat) and 

 protein. The percentage of fiber and ash is very low. This 

 is shown by^ the results recorded in Table 15. 



Table 15. — Analyses of lumbang kernels. 



» Semler, H., Die Tropische Agrikultur, Volume 2, page 515. 



b Agricultural Gazette, New South Wales, Volume 17, (1906), page 859. 



Lumbang oil has a light yellow color, and an agreeable odor and 

 taste. It dries in thin films when allowed to stand several days. 

 The results of various analyses of lumbang oil quoted by Wilcox 

 and Thompson are given in Table 16. Aguilar also analyzed 

 various samples of lumbang oil. His results are given in 

 Table 17. 



Table 16. — Constants of lumbang oil (Wilcox and Thompson). 



« Imperial Institute, Bulletin of Imperial Institute, Volume V (1907), page 135. 



" De Negri, Journal of the Society of Chemical Indu-stry, Volume XX (1901), page 909. 



'' Lewkowitsch, Journal of the Society of Chemical Industry, Volume XX (1901), page 909. 



•> Fendler, G., Journal of the Society of Chemical Industry, Volume XXIII (1904), page 613. 



e Kassler, Journal of the Society of Chemical Industry, Volume XXII (1903), page 639. 



