Organics in wheat and rye straw pulp bleaching and combined mill effluents (IV) organoleptic screening of sea food

Abstract

Studies have been made on whether, to man's palate and nostril, taste and odour of sea food had been affected when harvested in a Danish marine strait receiving mixed black cooking liquor and spent bleaching liquors discharged by a bleached neutral sulphite straw pulping mill. Mussels and eels were kept in cages and pots placed at positions at varying intervals from the effluent discharge point. After 7 weeks, they were subjected to olfactory sense testing—eels, additionally, to gustatory sense testing—all in discriminative triangle tests against samples of blank material. Testing of eels revealed no effects, whereas testing of mussels revealed that their odour differed depending on where they had been harvested, although an off‐odour of mussels was not incontestably proved to have been contributed by the pulp mill effluent.