Coastal Bermuda grass (CBG) has been shown to have potential as a biomass feedstock for sugar production. In this study, the effectiveness of ozone pretreatment for CBG to improve the sugar recovery via enzyme hydrolysis was investigated. Raw CBG and autohydrolysistreated CBG were pretreated with ozone at ozone consumption of 1.8 to 26.4 % (w/w) at room temperature. Lignin degradation and hemic...

Angiotensin-converting enzyme (ACE) was studied in preparations of microvessels isolated from rabbit cerebral cortex. Activity was determined by measuring the degradation of hippuryl-histidyl-leucine (Hip-His-Leu) by the intact microvessels in a physiological salt solution at pH 7.4. ACE activity was dependent on both substrate and chloride ion concentration and was inhibited by captopril in a ...

A single topical application of 1.0 mg of croton oil or 17 nmoles of 12-O-tetradecanoyl-phorbol-13-acetate (TPA) resulted in a rapid, transient stimulation of mouse epider mal ornithinc decarhoxylase activity. The activity reached a peak (230-fold greater than control after TPA) at 4 to 5 hr after croton oil or TPA treatment and returned to control level by 12 hr. The stimulation of S-adenosyl-...

We investigated whether pre- and posttreatment analysis of erythrocyte membrane Na+,K(+)-ATPase (EC 3.6.1.37) activity would be a useful marker for screening hypertensive patients to determine who might benefit from treatment with calcium antagonists. Erythrocyte Na+,K(+)-ATPase activity and sodium and potassium (ENa, EK) contents were determined in controls and in patients with untreated essen...

Abstract Sulphite addition during steam pretreatment of softwoods under acidic, neutral and alkaline conditions was assessed to try minimize lignin condensation. Although neutral/alkaline resulted in effective sulphonation, non-uniform size reduction observed. In contrast, acidic sulphite treatment at 210 °C for 10 min homogenous particle water-insoluble component that 62% carbohydrate 33% lign...