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Effect of Green Tea(Camellia sinensins) and Maesil(Prunus mime) Extracts on Endogenous Formation of N-Nitrosodimethylamine  

성낙주 (경상대학교 식품영양학과, 농업생명과학연구소)
최선영 (경상대학교 식품영양학과, 농업생명과학연구소)
정미자 (경상대학교 식품영양학과, 농업생명과학연구소)
신정혜 (경상대학교 식품영양학과, 농업생명과학연구소)
김행자 (경상대학교 가정교육과)
Publication Information
The Korean Journal of Food And Nutrition / v.15, no.1, 2002 , pp. 16-22 More about this Journal
Abstract
The effects of nitrite scavenging. electron donating and N-nitrosodimethylamine(NDMA) formation in vitro arid green tea(Camellia sinensis) and Maesil(Prunus mume) were studied. The green tea and Maesil extracts were tested for their nitrite-scavenging effect under the different pH conditions such as pH 1.2, 4.2 aud 6.0. The effects of nitrite-scavenging in all concentrations were diminished in the alkali condition, while its effects in the acidic condition of pH 1.2 were reached of more than 99.0% by adding above 0.5ml of green tea extract. And also, nitrite-scavenging effect by adding 3ml of Maesil extract was about 77.0%. The electron donating ability(EDA) of green tea and Maesil extracts was 70.6%, 75.1%, respectively. The formation of NDMA was very effectiveness which was inhibited 82.1%, 73.2% at reaction mixture of pH 2.5 adding 3ml of above extracts. respectively . The ground CW. TW1 and TW2 (refer to Table 1) diets were incubated with 10m1 simulated saliva and 40m1 gastric juice at 37$^{\circ}C$ for 2hrs. NDMA formation was inhibited at all levels of green tea and Measil extracts.
Keywords
NDMA; nitrite-scavenging; simulated gastric digestion;
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