|
Citral（Mixture of Geranial and Neral）
Code：GB
I 1190；FEMA 2303
Chemical
Structure：
Composed by
two
kinds of isomers: Geranial and Neral.
Empirical
Formula：C10H16O
Relative
Molecular Mass：152.24
Properties：
Achromatous
or Pale Yellow liquid.
Strong
aroma similar to lemon.
Not
resolvable in Water. Resolvable in Ethanol.
Mutually resolvable with most of natural and synthetic
essences.
Boiling
point at 228℃.
Flash
point at 101℃.
Method：Seperated
and refined from Litsea Cubeba Berry Oil and Lemongrass Oil.
It also can be gained through oxidating Geraniol and Nerol.
Quality
Standard
|
Item
|
Index
|
|
GB 6773－86
|
FAO/WHO(1982)
|
FCC(Ⅳ-Suppl,-1)
|
EOA
|
|
Aroma
|
Similar with Lemon Oil Terpeneless
|
Strong Lemon Aroma
|
—
|
—
|
|
Color and State
|
Primrose liquid. Color and lustre≤No.10 Color Mark
|
Achromatous to primrose liquid
|
Pale yellow liquid
|
Pale yellow liquid
|
|
Relative density（20/20℃）
（25/25℃）
|
0.885～0.890
|
0.888～0.894
0.885～0.891
|
0.885～0.891
|
0.885～0.891
|
|
Refractive index （20℃）
|
1.4860～1.4900
|
1.486～1.490
|
1.486～1.490
|
1.4860～1.4900
|
|
solubility（25℃）
|
—
|
1mL entirely resolvable in 7mL70%
Ethanol
|
1mL entirely resolvable in 7mL70%
Ethanol
|
1mL entirely resolvable in 2mL60%
ethanol
|
|
Acid Number (Ph)
≤
|
5
|
5
|
—
|
—
|
|
Content / %
≥
|
97.0
|
Two isomers together: 96%
|
Two isomers together:
96.0
|
96
|
|
Solubility in Sodium Bisulfite Liquor /%
|
—
|
—
|
Eligible
|
98(25℃)
|
|
Arsenic （as per As）/% ≤
|
0.0003
|
—
|
—
|
—
|
|
Heavy Metal（as per Pb）/% ≤
|
0.001
|
—
|
—
|
—
|
Discrimination：
Mix
1mL Citral with 2mL Sodium Bisulfite Liquor and two drops of
Anhydrous Sodium Carbonate Liquor（1+8） together. When the mixture become white crystal solid after being
heated, add 10mL Sodium Bisulfite Liquor. Shake and heat the mixture
in water. The crystal melts and the lemon aroma fades away.
Toxicology：
GRAS
FEMA 2303，FDA
182.60。
Use：
Use
range and dosage:
（1）It
is stipulated in Chinese "Hygienic Standards for Food Additives
in Use"（GB
2760-1996）that,
appropriate dosage of the substance can be applied in confecting
varieties of foodstuff flavoring essence according to production
needs.
（2）Stipulated in FEMA, the highest reference dosage of the substance
employed in different foodstuff is respectively as follows: in soft
drink，9.2㎎/㎏；in
ice cream and other edible ice foodstuff，23㎎/㎏；in confection，41㎎/㎏；in baked and roasted food，43㎎/㎏；in
gum，170㎎/㎏。
（3）Actual
employment reference：
the substance is extensively employed in foodstuff flavoring
essence, for example, apple, cherry, Ginger, Grape, Lemon, Lime,
Orange, grapefruit, spices and herbs, Strawberry, vanilla essence.
Density of the final flavored product is about 0.004%, which reaches
as high as 0.015%～0.017% in gum.
| 
