AI Article Synopsis
- Garlic enriched with selenium could be a beneficial dietary source for preventing cancer, but producing it traditionally can harm the environment.
- Hydroponic cultivation allows precise control over selenium fertilization without environmental pollution; the study showed that garlic seedlings can effectively accumulate selenium in a sulfate-free nutrient solution.
- Analysis revealed the presence of various organic selenium compounds in the garlic, indicating that hydroponically grown garlic can be a viable option for creating nutritional supplements rich in selenium.
Article Abstract
Garlic enriched by selenium (Se) could be an excellent source of dietary Se for cancer chemoprevention. The production of high-Se garlic requires Se-fertilized soil, but such soil may pollute the environment. Hydroponics is a closed system that allows good control over Se fertilization without environmental consequences. We examined the effect of hydroponic cultivation on Se uptake and assimilation in garlic seedlings. Garlic bulbs were grown in the nutrient solution without Se for first 2 wk, and with potassium selenate for an additional week. Sulfate in an ordinary hydroponic solution inhibited the absorption and assimilation of selenate, but when a sulfate-free nutrient was used for Se addition, the garlic seedlings accumulated >1 mg Se, dry weight. Through HPLC inductively coupled plasma MS (HPLC-ICP-MS) analysis, Se-methlyselenocysteine (MeSeCys), gamma-glutamyl-Se-methlyselenocysteine (gamma-GluMeSeCys), selenomethionine, and nonmetabolized selenate were identified in water extracts of the garlic seedlings. The results demonstrate that hydroponic enrichment of Se in garlic seedlings could be a practical means of producing organic Se compounds for nutritional supplements.
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| http://dx.doi.org/10.1093/jn/136.3.870S | DOI Listing |
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