Detection of 1,4-dihydroxy-2-naphthoic Acid from commercial makgeolli products.
To support beneficial effects of makgeolli for human health, we investigated for the presence of 1,4-dihydroxy-2-naphthoic acid (DHNA), a bifidogenic growth stimulator (BGS), from commercial makgeolli products. Among eleven makgeolli products (A∼K), four showed positive peaks for DHNA in high performance liquid chromatography analysis. Makgeolli product A in particular contained the highest concentration of DHNA (0.44 ppm), as confirmed by liquid chromatography-mass spectrometry. Furthermore, BGS activity of the makgeolli product A was higher than those of products in which DHNA was not detected. These results indicate that makgeolli can be a good source for DHNA and that DHNA-enriched makgeolli could be developed by modifying manufacturing procedures and controlling its microbiota.
Department of Biotechnology, Chungju National University, Chungbuk 368-701, Korea.
Ji-Eun
JE
Eom
Food Safety Support Organization, Korea Food Industry Association, Seoul 137-867, Korea.
Sang-Chul
SC
Kwon
Department of Biotechnology, Chungju National University, Chungbuk 368-701, Korea.
Gi-Seong
GS
Moon
1,4-dihydroxy-2-naphthoic acid; bifidogenic growth stimulator; makgeolli