What is Gardenia Red Powder?
Gardenia Red Powder is a natural water-soluble red pigment that has received a lot of attention in recent years. It is prepared from the chemical component geniposide contained in the Rubiaceae plant - Gardenia jasminoides Ellis. At present, it is believed that the formation mechanism of gardenia red may be.
The geniposide in the extract of gardenia fruit undergoes ester hydrolysis under alkaline conditions to remove the methoxy group to generate Geniposidic acid. Then it is hydrolyzed by β-glucosidase to remove the glycosidic structure on the side chain to generate Genipin acid. This genipinic acid can react with nitrogen-containing compounds to form gardenia red pigments.
Appearance | Red Brown Powder |
Identification | Complied to Standard |
Odor | Charateristic |
Loss on Drying | ≤ 7.0 % |
Ash | ≤ 4.0 % |
Color Value | 40 |
Arsenic | ≤2mg/kg |
Lead | ≤2mg/kg |
The preparation process of Gardenia Red Powder:
Genipinoside → alkaline hydrolysis → genipin glucoside → immobilized cellulase enzymatic hydrolysis → genipin acid → amino acid reaction → gardenia red pigment solution → acid precipitation → collection of precipitate → water washing, neutralization → drying → gardenia red pigment powder
Why choose Gardenia Red Powder?
The gardenia red pigment solution has a maximum absorption of around 540 nm. Therefore, the change in the absorbance value of the pigment at 540 nm can be used as an indicator for the study of the physicochemical properties of the gardenia red pigment. The results of infrared spectrum analysis showed that the gardenia red pigment produced by the reaction may retain the original aromatic ring structure of geniposide. The glycosidic bond of geniposide was enzymatically hydrolyzed to generate a new phenolic hydroxyl group. Using 0.1 mol/L sodium nitrate as the mobile phase, the molecular weight distribution of gardenia red pigment was determined by high-performance liquid chromatography. It is shown that the molecular weight distribution exhibited by the gardenia red pigment is around 38.6 kDa. Pigments have good stability in the pH>3 range. Precipitation occurs when pH is below 3, alkaline
The environment has a certain color enhancement and color protection effect on the pigment.
The pigment solution has poor tolerance to light, so it should avoid direct sunlight during processing and storage. Pigments have good temperature stability. Metal ions Na+, K+, Fe2+, Mg2+, Ca2+, and Zn2+ have no adverse effect on the pigment, while Fe3+, Cu2+, Al3+, and Sn2+ will precipitate the gardenia red pigment solution. Common reducing agents have no significant effect on pigments. The antioxidant effect is weak, which will cause the pigment to precipitate or fade. Therefore, contact with these substances should be avoided in the application and processing of pigments.
The use of various common food additives basically does not affect the quality of the pigment. Therefore, the application range of gardenia red pigment is not limited by additives. It can be seen that the gardenia red pigment has good stability and good development and utilization value.
Application:
For general food. Such as the coloring of noodles, stuffing cores, cold snacks, red bean rice, beverages, sweet wine, etc., it is a red colorant. Good dyeability to proteins and carbohydrates.
Where to buy Gardenia Red Powder?
Yansheng International Group Ltd. is a professional gardenia pigment manufacturer. We provide you with high-quality gardenia yellow, gardenia red, and gardenia blue pigments. You just need to contact us through this page to buy it!
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