Fragrance/Flavor substances - Determination of ester value or ester content
1 Scope
This part of GB/T 14455 specifies a method for the determination of the ester value or ester content of fragrance/flavor substances.
This part is applicable to the determination of the ester content of single esters and the ester value of essential oils in isolated and synthetic fragrance/flavor substances.
This part is not applicable to the determination of the ester content of mixed esters and esters that are difficult to saponify, and the ester value of essential oils containing lactones or an appreciable proportion of aldehydes.
2 Normative references
The following normative documents contain provisions which, through reference of GB/T 14455, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document applies.
GB/T 14454.1 Fragrance/Flavor substances - Preparation of test samples (GB/T 14454.1-2008, ISO 356:1996, MOD)
GB/T 14454.14 Fragrance/Flavor substances - Preparation of standard solution, test solution and indicator solution
GB/T 14455.5 Fragrance/Flavor substances - Determination of acid value or acid content (GB/T 14455.5-2008, ISO 1242:1999, MOD)
3 Terms and definitions
For the purposes of this part of GB/T 14455, the following terms and definitions apply.
3.1
ester value
milligrams of potassium hydroxide required to neutralize the acids liberated by the hydrolysis of esters present in 1g of the fragrance/flavor substances
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents 6 Apparatus 7 Preparation of test sample 8 Procedure 9 Expression of results 10 Test report
Fragrance/Flavor substances - Determination of ester value or ester content
1 Scope
This part of GB/T 14455 specifies a method for the determination of the ester value or ester content of fragrance/flavor substances.
This part is applicable to the determination of the ester content of single esters and the ester value of essential oils in isolated and synthetic fragrance/flavor substances.
This part is not applicable to the determination of the ester content of mixed esters and esters that are difficult to saponify, and the ester value of essential oils containing lactones or an appreciable proportion of aldehydes.
2 Normative references
The following normative documents contain provisions which, through reference of GB/T 14455, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document applies.
GB/T 14454.1 Fragrance/Flavor substances - Preparation of test samples (GB/T 14454.1-2008, ISO 356:1996, MOD)
GB/T 14454.14 Fragrance/Flavor substances - Preparation of standard solution, test solution and indicator solution
GB/T 14455.5 Fragrance/Flavor substances - Determination of acid value or acid content (GB/T 14455.5-2008, ISO 1242:1999, MOD)
3 Terms and definitions
For the purposes of this part of GB/T 14455, the following terms and definitions apply.
3.1
ester value
milligrams of potassium hydroxide required to neutralize the acids liberated by the hydrolysis of esters present in 1g of the fragrance/flavor substances
Contents of GB/T 14455.6-2008
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Preparation of test sample
8 Procedure
9 Expression of results
10 Test report
