Nitrosation products from the plant Ephedra altissima and their potential endogenous formation.

Abstract:

:The plant species Ephedra is commonly used in both folk medicine and for the preparation of health teas. Nitrosation of a tea made from Ephedra altissima yielded N-nitrosoephedrine (NEP), N-nitrosopseudoephedrine (NPEP), N-nitrosoproline (NPRO), N-nitrosomethylbenzylamine (NMBA), trace quantities of 2 unidentified non-volatile nitrosamines and the new nitroso compound 2-(N-nitroso-N-methylamino)propiophenone (NMAP). Incubation of a tea extract at 37 degrees C and pH 2.0 under conditions simulating the normal fasting stomach with a constant nitrite concentration (25 microM) for 1 h produced NEP, NPEP, NMAP and NPRO. The synthesis and preliminary results for the mutagenic effect of NMAP on the reversion of Salmonella typhimurium strains TA100 and TA1535 in the Ames test are reported.

journal_name

Cancer Lett

journal_title

Cancer letters

authors

Tricker AR,Wacker CD,Preussmann R

doi

10.1016/0304-3835(87)90045-0

subject

Has Abstract

pub_date

1987-05-01 00:00:00

pages

199-206

issue

2

eissn

0304-3835

issn

1872-7980

pii

0304-3835(87)90045-0

journal_volume

35

pub_type

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