Family 



Rosaceae 



- 26 - 



Genus and Species Source 



Citramalio Acid 



COOH 

 t 



H3C-C-OH 



CH 2 

 COOH 



Peel 

 Citric Acid 



Pyrus malus 



Reference 



303, 301+ 



CHg COOH 



H0-C-C00H 

 t 



CHg COOH 



Citric acid was first found by Scheele (631 ) (632) in lemons and appears to be 

 ubiquitous in higher plant s» Franzen & Helwert (207) have made a critical 

 review of the literature on occurrence of citric acid* 



Coumario Acid 

 H0C^5iCH=CHC00H 



Bignoniaceae 



Leguminosae 



Papaveraceae 



Pinaceae 



Rosaceae 



Catalpa bignonioides 



C • ovata 



Davie sia latifoiia 



Melilotus alba 



ii ii 

 Me officinalis 



Trifolium pratense 

 Papaver somniferum 

 Pinus sp.." 

 Prunus serotina 



Leaf 



Leaf, bark 

 Leaf s stem 



Vegetative 



part 

 Root 

 Vegetative 



part 



Flower 



Resin 

 Bark 



1469 

 288 

 562 



103 



622 



103 

 560 

 6I4I 

 37 

 557 



