Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Contact dermatitis
19 (1988), S. 0
ISSN:
1600-0536
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
87% of the propolis product “LB-1”, originally reported to be 1,1-dimethyl-allyl caffeic acid ester, was shown by GC/MS analysis to consist of isomeric pentenyl caffetes. 63% of which are 1,1-dimethylallyl caffeate. These pentenyl caffeates proved to be the major sensitizers of propolis and of poplar bud secretion in our previous study. In addition, 3 further minor allergens have now been investigated. Experimental sensitization indicates that phenylethyl caffeate is as strong a sensitizer as the major allergen “LB-1” while benzyl salicylate is a moderate sensitizer. Benzyl cinnamate plays only a subordinate role. At least 3 further esters of caffeic acid or cinnamic acid remain to be studied. Interestingly, relationships between propolis and balasam of Peru were found. 8 compounds are common to both materials. Thus “cross-reactions” or concomitant reactions in proplis-sensitive individuals to balsam of Peru are explainable.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1600-0536.1988.tb02931.x
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