1. Anon . (1998 ). Schedule 2 of Food Safety (Fishery Products and Live Shellfish) (Hygiene) Regulations (Northern Ireland) 1998 , (Council Directive 91/492/EEC).
2. Spoilage and shelf‐life extension of fresh fish and shellfish
3. E.Y. Bridson (1990 ). The Oxoid Manual , 6th edn. Section 2. Pp. 174 -176 , 174 -176 . Basingstoke, UK: Unipath Ltd.