Astaxanthin is a keto-carotenoid. It belongs to a larger class of chemical compounds known as terpenes (as a tetraterpenoid) built from five carbon precursors, isopentenyl diphosphate, and dimethylallyl diphosphate. Astaxanthin is classified as a xanthophyll (originally derived from a word meaning \”yellow leaves\” since yellow plant leaf pigments were the first recognized of the xanthophyll family of carotenoids), but currently employed to describe carotenoid compounds that have oxygen-containing components, hydroxyl (-OH) or ketone (C=O), such as zeaxanthin and canthaxanthin. Indeed, astaxanthin is a metabolite of zeaxanthin and/or canthaxanthin, containing both hydroxyl and ketone functional groups. Like many carotenoids, astaxanthin is a lipid-soluble pigment. Its red-orange colour is due to the extended chain of conjugated (alternating double and single) double bonds at the centre of the compound. This chain of conjugated double bonds is also responsible for the antioxidant function of astaxanthin (as well as other carotenoids) as it results in a region of decentralized electrons that can be donated to reduce a reactive oxidizing molecule.
Functions and Applications
1. Applied in food field , as raw material
2. Applied in cosmetic field , as raw material
3. Applied in pharmaceutical grade , as raw material
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| Analysis Item | Specification | Analysis Result | Method |
| Appearance | Red or dark red powder | Complied | |
| Odour | Seaweed freshness | Complied | |
![](\"https://www.arshinefoodadditives.com/public/js/ueditor/themes/default/images/spacer.gif\"){kind=spacer} Loss on drying ( ) |
≤5 | 2.78 | GB 5009.3 – 2016 |
| Ash | ≤5 | 1.45 | GB 5009.4 – 2016 |
| Astaxanthin Assay () | ≥3.5 | 3.67 | HPLC |
| Heavy Metal Analysis | |||
| Lead (ppm) | ≤1.0 | 0.76 | GB 5009.12 – 2017 |
| Arsenic (ppm) | ≤1.0 | 0.89 | GB 5009.11 – 2014 |
| Mercury (ppm) | ≤0.1 | Not detected | GB 5009.17 – 2014 |
| Cadmium (ppm) | ≤1.0 | Not detected | GB 5009.15 – 2014 |
| Microbial Analysis | |||
| Total Plate Count (CFU/g) | ≤10,000 | 7800 | GB 4789.2 – 2016 |
| Yeast and Moulds (CFU/g) | ≤50 | Not detected | GB 4789.15 – 2016 |
| Coliforms (MPN/g) | ≤0.92 | Not detected | GB 4789.3 – 2016 |
| E. Coli (/g) | Not detected | Not detected | GB 4789.3 – 2016 |
| Salmonella (/25g) | Not detected | Not detected | GB 4789.4- 2016 |
| Safety Information Storage Shelf Life |
This product is safe for intended use. It is produced from a toxic-free microalgae Haematococcus pluvialis. Production and analysis have been carried out in appropriate food manufacturing facilities according to Sealed in original packaging and use it as quick as possible once opened. Recommended to store under 4℃. Shipment can be handled at room temperature. 24 months in original packaging. |
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| The above test indexes are in accordance with USP38 |
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