Great attention has been paid to volatile toxic aldehydes like formaldehyde in aquatic products. In order to investigate content of formaldehyde in squid and squid products, a high-performance liquid chromatography (HPLC) method was developed for determination of formaldehyde. Based on steam distillation and 2,4-dinitrophenylhydrazine derivatization, formaldehyde was analysis by HPLC using ODS-...

The antioxidant bioactivities of the whole isolated anthocyanins from Hibiscus sabdariffa (HS) calyx were evaluated and compared with the bioactivity of vitamin C as a standard water soluble antioxidant vitamin. They were assessed for antioxidant activity based on their ability to impair 2, 4-dinitrophenylhydrazine (DNPH)-induced oxidative tissue damage in toxicant exposed rabbits. Exposure of ...

Solanesol, a 45-carbon, trisesquiterpenoid alcohol found in tobacco leaves and tobacco smoke, has been used as a quantitative marker for tobacco smoke for years. However, solanesol appears to be unreliable as a quantitative marker for tobacco smoke during environmental air sampling because it can be degraded substantially when present as a component of tobacco smoke and by as much as 100% when ...