xii. a, i Brill: Pangium edule and Hydnocarpus alcalx 



43 



and of gummy consistence. Determinations of its activity were 

 made with amygdalin and gynocardin. 



Table V. — Activity of gynocardase on 1 per cent solutions of amygdalin 

 and gynocardin. 



Time. 



Glucoside. 



En- 

 zyme. 



Glucoside 

 hydrolyzed. 



Hours. 

 24 

 24 

 24 

 24 



Amygdalin 



do 



cc. 



25 

 25 

 25 

 25 



Grams. 

 0.2 

 0.2 

 0.2 



Per cent. 

 25.57 

 26.02 

 13.82 



Gynocardin . 









Here again gynocardin is less readily hydrolyzed than amyg- 

 dalin. Since gynocardin is hydrolyzed by emulsin, which is a 

 /3-enzyme, it must be a /3-glucoside. 8 



Gynocardase hydrolyzes both gynocardin and amygdalin ; con- 

 sequently it must belong to the class of ,6-enzymes typified by 

 emulsin. 



Several samples of nuts were examined for their oil content. 



Table VI. — Oil content and properties of oil obtained from the seeds of 

 Pangium edule. 



Mature. Immature. 



Kernel content of air-dried nuts 



Dried kernel content based on air-dried nuts . 

 Oil content based on dried kernels 



Per cent. Per cent. 

 42. 67 36. 38 



29. 09 16. 28 



21.09 24.11 



I 



Melting point . 



Specific gravity 



Specific rotation in chloroform solution 



Iodine value (Hanus) 



Acid value cc. 0.1 N alkali 



Saponification value 



Index of refraction 



Free acids 



from oil of 



mature 



seeds. 



Clouds at 

 18° C. 



0.9013 

 +3.49 

 113.5 



Shows some 

 clouding at 

 2°C. 



0.9049 



+4.28 



113.1 



0.52 



190.3 



1.4665 



Free 



acids 



from oil Oil from imraa- 

 of imma 



ture 



seeds. 



No change 

 at8°C. 



'Fischer, E., Ber. d. deutsch. chem. Ges. (1894), 27, 2985. 



