Carotenoids of human colostrum

Area of Science:

• Biochemistry
• Human Physiology
• Nutritional Science

Background:

• Colostrum, the first breast milk, is yellow due to carotenoids.
• This yellow color fades as milk production increases.
• Carotenoids are pigments with potential health benefits.

Purpose of the Study:

• To identify the specific carotenoids in human colostrum.
• To quantify carotenoid concentrations and compare across mothers.
• To explore potential differences in carotenoid transport related to lactation history.

Main Methods:

• Thin-layer chromatography (TLC)
• High-performance liquid chromatography (HPLC)
• Spectral analysis of colostrum extracts

Main Results:

• Alpha- and beta-carotene, lycopene, and beta-cryptoxanthin identified as major colostrum carotenoids.
• Lutein and/or zeaxanthin were also detected.
• Significant variation in carotenoid concentration (0.34-7.57 µg/ml) observed.
• Multiparous mothers showed higher mean colostrum carotenoid levels than primiparous mothers.
• Primiparous donors often had colostrum with little to no yellow color.

Conclusions:

• Breast milk carotenoid composition varies significantly among individuals.
• Previous lactation may influence carotenoid transport into colostrum.
• Further research is warranted on carotenoids, lactation, and breast cancer risk.