Malyn ChulasiriNuntawan BunyapraphatsaraPrimchanien MoongkarndiMahidol University2018-08-102018-08-101992-01-01Environmental and Molecular Mutagenesis. Vol.20, No.4 (1992), 307-31210982280089366922-s2.0-0026480572https://repository.li.mahidol.ac.th/handle/20.500.14594/22288Studies of the mutagenicity and antimutagenicity of hispidulin and hortensin, the flavonoids from Millingtonia hortensis L. (Bignoniaceae), were performed using the liquid preincubation method of the Salmonella/microsome test. At the highest dose tested, 100 μg/plate, both compounds showed no mutagenicity and no cytotoxicity toward S. typhimurium strains TA98 and TA100 either in the presence or absence of S9 mix. However, these substances were antimutagens toward 2–aminoanthracene, aflatoxin Bl (in TA98), and dimethylnitrosamine (in TA100); but neither substance inhibited the direct mutagenic activity of 2‐(2‐furyl)‐3‐(5‐nitro‐2‐furyl) acrylamide nor that of sodium azide in strains TA98 and TA100, respectively. © 1992 Wiley‐Liss, Inc. Copyright © 1992 Wiley‐Liss, Inc., A Wiley CompanyMahidol UniversityEnvironmental ScienceMedicineArticleSCOPUS10.1002/em.2850200409