Today, there are nearly 7,000 flavoring substances
sold and used in e-cigarettes.
Worldwide, flavoring substances
are regulated and authorized for use by the Food and Agriculture Organization (FAO) (Xu et al.
The flavoring substances
of e-cig liquids may be safe to eat or drink but not to inhale.
6%, products should not contain synthetic and artificial dyes, artificial flavoring substances
, modified starches, vegetable fats, preservatives, GMOs.
FEMA has declared more than 2,600 flavoring substances
The flavor materials include current materials cited in the FEMA GRAS lists through the GRAS 26 list and subsequent interim publications, the EU "Union" list of flavoring substances
that can be used in food, and the materials in the publications of the CoE, as well as information from the Chemical Sources Association and users and suppliers of materials.
Generally, flavor manufacturers have reduced the amount of diacetyl they use, and, in some instances, diacetyl has been replaced with other, similar flavoring substances
," says John Hallagan of the Flavor and Extract Manufacturers Association.
Seven flavoring substances
are on the "wait and see" list, however.
For the first time, high-pressure liquid chromatography makes it possible to separate aroma and flavoring substances
from solutions while performing simultaneous sensory evaluations.
This fifth edition is updated to reflect the latest international codes and regulations on permitted uses of ingredients, and the most current information on generally recognized as safe (GRAS) flavoring substances
This is especially noticeable in gels, in which perception is often controlled by how efficiently the gel melts or breaks down in the mouth, by how flavor substances diffuse into the broken gel particles and by the evaporation of flavoring substances
However, in October 1999, the Union Ministry of Health and Family welfare issued another announcement permitting the use of all natural flavors and flavoring substances