The use of chemical agents as clarification and decolorising aids i~ order to obtain ~lower coloured A-sugar have been Investigated. The chemicals tested include bentonite sulphur dioxide and some sulphurous acid salts. Colour lev~ el~ i~ variou~ factory products have been surveyed. From this information, together with that obtained in specific decolorising tests, an attempt has been made at an...

A brief history of air pollution Accounts of air pollution in the UK date back to the 13 century. Early occurrences resulted from rapid population growth, urbanisation and changes in fuel use – in particular the medieval switch from wood to coal, especially in brick kilns and domestic fireplaces. Coal combustion in industrial furnaces, boilers and, above all, in domestic fireplaces, was the mai...

Ethanol, carbon dioxide and glycerol are the major products produced by yeast during wort fermentation but they have little impact on beer and spirit flavour. It is the type and concentration of secondary metabolites that can determine overall beer flavour. These compounds are (but not only) primarily: higher alcohols, esters, carbonyls and sulphur compounds—inorganic and organic. There are a n...

The reduction of atmospheric sulphur dioxide pollution is causing increasing problems of sulphur deficiency in sulphur-demanding crop plants in northern Europe. Elemental sulphur and many sulphur containing compounds such as cysteine-rich antifungal proteins, glucosinolates (GSL) and phytoalexins play important roles in plant disease resistance. The aim of this work was to analyse the effect of...

1. The products of the lactoperoxidase-catalysed oxidation of thiocyanate by hydrogen peroxide were sulphate, carbon dioxide and ammonia. Cyanate, sulphite and a compound showing increased extinction at 235m,u (the '235 compound') were intermediate oxidation products. 2. Two of the intermediates acted as electron acceptors in the oxidation of NADH2. Thus NADH2 was oxidized by sulphite in the pr...