Title: Influence of nitrate, ascorbic acid, and nitrate reductase microorganisms on<i>N</i>‐nitrosamine formation during Korean‐style soysauce fermentation
Abstract: Abstract Traditional Korean soysauce samples were collected from households in Chinju, Gyeongnam, Korea and analysed for volatile N‐nitrosamines. Five of 24 samples contained NDMA (range = 1–6–10–4 μg/1) which was the only volatile N‐nitroso compound found. Soysauce made from well water contained NDMA more often (4 of 6 samples) than soysauce made from tap water (1 of 18). This suggests that the water source is a determinate in the NDMA content of soysauce, probably due to a higher nitrate content of well water. The source of salt used did not clearly influence NDMA content. Soysauce was prepared in the laboratory using traditional methods but with 0 to 400 mg/1 nitrate and in some cases made 6.5 to 65 mM in ascorbic acid and fermented for 120 days. The NDMA content of the samples was positively correlated with increasing nitrate concentration. Nitrate at 400 mg/1 resulted in an NDMA content of 203 μg/1. Ascorbic acid substantially inhibited NDMA formation. All samples contained large numbers of nitrate reductase‐containing organisms (>1 × 107 CFU/ml). Keywords: nitratenitriteN‐nitrosaminesoysaucenitrate reductase Notes To whom all correspondence should be addressed.
Publication Year: 1991
Publication Date: 1991-05-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 7
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot