Precursors nonvolatile

Figure 2- Influence of glycoconjugation on the rate of product formation, example vitispirane 6 formation from nonvolatile precursors 5 and 5A.

Isolation of Nonvolatile Precursors of /3-Damascenone from Grapes Using Charm Analysis... 

Figure 8.25. Application of nonvolatile precursors for synthesis of solids. Ultrasonic atomization of a solution leads to droplets from which the solvent evaporates in the reactor. At still higher temperatures the aerosol evaporates and the usual forms of CVD are possible.

Controlled Release of Volatiles from Nonvolatile Precursors.1028... 

CONTROLLED RELEASE OF VOLATILES FROM NONVOLATILE PRECURSORS... 

Unlike enzymatic reactions, microorganisms have the ability to perform multiple reactions, and they do not require cofacors for regeneration (albeit they require nutrients). They may be used to generate a flavor compound from a nonvolatile precursor (e.g., produce a lactone from castor oil), to effect the bioconversion of one volatile to another (e.g., valencene to nootkatone), or effect a chiral resolution (a racemic mixture of menthol). The primary limitation of using microoganisms for... 

The odorants listed in Table 9 were identified on the basis of their chromatographic and sensory properties using the same analytical conditions as applied to AEDA. A stepwise reduction of the headspace volume revealed the most potent odorants. The medium, dry or aqueous, significantly influenced the results. For example, thiols nos. 1 and 2 were completely lacking in the headspace of the solid product, whereas in the aqueous medium they showed high odor potencies. These compounds could have been either efficiently encapsulated or liberated from nonvolatile precursors by hydrolysis. 

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