Tryptophan in Food Regulations (Northern Ireland) 2005 (S.R. No. 440 of 2005). Country/Territory United Kingdom Territorial subdivision Northern Ireland Document type Regulation Date 2005 Source FAO, FAOLEX Subject Food & nutrition Keyword Food quality control/food safety Food additives Geographical area Atlantic Ocean Islands, Europe, Europe and Central Asia, North Atlantic, North Sea, North-East Atlantic, Northern Europe Abstract These Regulations prohibit the addition of the amino acid tryptophan to food and prohibit the sale, offer for sale and exposure for sale of food containing tryptophan, subject to exceptions. The Regulations define offences and prescribe penalties. Full text English Website www.opsi.gov.uk References - Legislation Implements Food Safety (Northern Ireland) Order 1991 (S.I. 1991 No. 762 (N.I. 7)). Legislation | United Kingdom | 1991 (2013) Keyword: Basic legislation, Food quality control/food safety, Fraud, Inspection, Institution, Residues, Drugs, Animal health Source: FAO, FAOLEX Amended by Food for Particular Nutritional Uses (Addition of Substances for Specific Nutritional Purposes) Regulations (Northern Ireland) 2009 (S.I. No. 398 of 2009). Legislation | United Kingdom | 2009 Keyword: Food quality control/food safety, Special dietary uses, Offences/penalties Source: FAO, FAOLEX