The cytosolic glutathione S-transferases (GSTs) comprise a pivotal enzyme system protecting the cell from electrophilic compounds. It plays a major role in the detoxication of the primary and dihydrodiol epoxides of polycyclic aromatic hydrocarbons (PAHs), so that modulation of this enzyme system by PAHs will impact on their carcinogenic activity. The potential of six structurally diverse PAHs,...

Whole ‘Spartan’ apples were exposed to 1 kPa O2, air (21 kPa O2) and 100 kPa O2 at 1°C for 5, 12 and 19 days. Subsequent to the pretreatment, apples were cored, sliced and 40095 g of slices were sealed in 40-mm-thick low density polyethylene film bags having a moderate O2 transmission rate (OTR 2.28 fmol s m m Pa at 23°C) and held for up to 2 weeks at 1°C. Cut surface browning and flesh softeni...