Definitions nature-identical flavouring

Of course, during processing of fruit juices hydrolysis effects may occur, leading to decreased amounts of ethyl 2-methylbutanoate. However, its enantiomeric purity remains unchanged, whilst the corresponding 2-methylbutanoic acid is found as the (S)-enantiomer (99.5% or more) [33-37]. Consequently, the detection of racemic 2-methybutanoic acid (or the corresponding esters) definitely proves the addition of a synthetic (so called nature-identical) flavour compound. 

Definitions for natural and nature-identical flavouring substances are given. All flavouring substances shall be permitted with the exception of the prohibited substances (Table 1 to the 8th Schedule, see below) and those imported without written approval of the Director. 

The US Regulations only distinguish between natural and artificial flavourings. The European category nature-identical is unknown in the legal definitions. If such substances are synthetically produced, they are classified as artificial flavouring substances in the USA. 

Flavourings are not mentioned, but there does exist a Saudi Standard 951/1995 Flavours permitted for use in foodstuffs . The Standard gives definitions for natural flavourings (obtained from vegetable or animal raw materials), nature-identical and artificial flavouring substances and flavour enhancers. 

---