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Gardenia of additive agent for food is yellow
From;    Author:Stand originally
GB 7912-87 of additive agent for food of level of state of People's Republic of China
Cape jasmine is yellow (pulverous, extract)

Food Additive-Gardenia Yellow, crocin

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This standard applies to the gardenia that extracts for raw material place with Cape jasmine fructification to fizzle out, colorant serves as in food industry.

1 technology asks
1.1 exteriors
Taste the pulverous yellow that show orange color originally, extract is shown cinnamon.
Style of quantity of 1.2 structural formula, element, structure
Structural formula of element Tibetan a flower: C44H64O24;
The element is measured: 977.21;
Structural style:
/  of   of   of   of   of   of   of   of   of   of   of      
│ of   of   of │ CH3 CH3
│ of │ | |
│ ─ HC, O, CO, C==CH, CH==CH, C==CH, CH==│
│ of │ │ |
│ │ (│ of   of   of   of   of   of   of   of   of   of   of   of   of CHOH)3  
々 of   of   of   of   of   of   of   of   of   of   of   of   of   of   of   of   of │ │ | ? Br>─ of ┌ of │ O CH, │ of   of   of   of ┐ of ─ of O ─
│ of   of   of   of │ of │ of │ | |
│ ─ , CH2, O, CH, (CHOH)3, CH, CH2OH   │
/
Tibet spends acerbity structural formula: C20H24O4;
The element is measured: 328.35;
Structural style:
CH3 CH3 CH3 CH3
| of | | |
HOOC, C==CH, CH==CH, C==CH, CH==CH, CH==C, CH==CH, CH==C, COOH
1.3 projects and index (see a table 1)
Express 1
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┃ index
Project ┣ -- -- -- ┯ -- -- -- ━
Extract of ┃ pulverous │
-- -- -- -- -- -- -- -- -- ╋ -- -- -- ┿ -- -- -- ━
│ of 1 % ┃
│ of 24 of ┃ of ≥ of absorbance E 440nm 15
│ of 1cm ┃
-- -- -- -- -- -- -- -- -- ╋ -- -- -- ┿ -- -- -- ━
Dry weightlessness, │ of 7 of % ≤ ┃ 50
-- -- -- -- -- -- -- -- -- ╋ -- -- -- ┿ -- -- -- ━
Ash content, │ of 9 of % ≤ ┃ 5
-- -- -- -- -- -- -- -- -- ╋ -- -- -- ┿ -- -- -- ━
Arsenic (As) , │ of 2 of ┃ of Ppm ≤ 1
-- -- -- -- -- -- -- -- -- ╋ -- -- -- ┿ -- -- -- ━
Lead (Pb) , │ of 3 of ┃ of Ppm ≤ 2
-- -- -- -- -- -- -- -- -- ╋ -- -- -- ┿ -- -- -- ━
Heavy metal, │ of 10 of ┃ of Ppm ≤ 10
-- -- -- -- -- -- -- -- -- ┻ -- -- -- ┷ -- -- -- ━
2 experiments method
2.1 differentiate an experiment
2.1.1 the biggest absorb wave
With the diluent when measuring absorbance, due around wavelengh 440nm the biggest absorb a peak.
2.1.2 color react
Take this tasting 0.5g, join 2mL thick vitriolic, turn into slowly by deep cyan namely purple, turn into finally Brown.
Analyse of 2.1.3 layer layer
2.1.3.1 experiments method: Pool ㄏ whizs layer of? of Chou of 〔 of Tuo of  of the Song Dynasty of  of Xun of ⒔ of dream of take along sth to sb board make a way: Fine of approach?0g small crystallization
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