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Review
. 2024 Sep 25;29(19):4549.
doi: 10.3390/molecules29194549.

Extraction and Synthesis of Typical Carotenoids: Lycopene, β-Carotene, and Astaxanthin

Affiliations
Review

Extraction and Synthesis of Typical Carotenoids: Lycopene, β-Carotene, and Astaxanthin

Yuxuan Jiang et al. Molecules. .

Abstract

Carotenoids are tetraterpene compounds acting as precursors to vitamin A, with functions that include protecting eyesight, enhancing immunity, promoting cell growth and differentiation, and providing antioxidative benefits. Lycopene, β-carotene, and astaxanthin are particularly critical for health and have diverse applications in food, health products, and medicine. However, natural carotenoids are encased within cell structures, necessitating mechanical methods to disrupt the cell wall for their extraction and purification-a process often influenced by environmental conditions. Thus, improving the efficiency of carotenoid extraction from natural resources is of great interest. This review delves into the research progress made on the extraction processes, structures, and biological functions of carotenoids, focusing on lycopene, β-carotene, and astaxanthin. Traditional extraction methods primarily involve organic solvent-assisted mechanical crushing. With deeper research and technological advancements, more environmentally friendly solvents, advanced machinery, and suitable methods are being employed to enhance the extraction and purification of carotenoids. These improvements have significantly increased extraction efficiency, reduced preparation time, and lowered production costs, laying the groundwork for new carotenoid product developments.

Keywords: astaxanthin; biosynthesis; carotenoids; extraction; lycopene; β-carotene.

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Conflict of interest statement

Author Yadong Hu and Xinghu Zhou was employed by the company Jiangsu Coast Development Investment Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships.

Figures

Figure 1
Figure 1
The process of carotenoids from source to product.
Figure 2
Figure 2
Carotenoid biosynthetic pathway. Enzymes from IPP and DMAPP to β-carotene are shown in blue for bacteria and green for plants/algae as follows: the mevalonate pathway (MVA), the 2-C-methyl-d-erythritol-4-phosphate pathway (MEP), isopentenyl diphosphate (IPP), dimethylallyl diphosphate (DMAPP), farnesyl pyrophosphate synthase (IspA), geranyl pyrophosphate (GPP), geranylgeranyl diphosphate (GGPP), geranyl pyrophosphate synthase (GGPS), geranylgeranyl diphosphate synthase (CrtE/GGPPS), phytoene synthase (CrtB/PSY), phytoene desaturase (CrtI/PDS), lycopene-cyclase (CrtY/LCY), astaxanthin synthase (CrtS), the auxiliary cytochrome P450 reductase (CrtR), β-carotenoids ketoacidase (CrtW), β- Carotene hydroxylase (CrtZ), and carotenoids β-ring 4-dehydrogenase (CBFD).
Figure 3
Figure 3
Carotenoid extraction process.
Figure 4
Figure 4
The proportion of various extraction methods in the core database.

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