Effects of pre-harvest light intensity on the enhancement of the nutritional contents and antioxidant properties of wheatgrass
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Abstract
This study showed that wheatgrass had the greatest growth with the 50IL treatment, whereas the 150C treatment yielded the slowest growth. Investigating the effect of light stress using the Fv/Fm ratio revealed that no light treatment resulted in stress-induced cell mortality, as all Fv/Fm values were >0.7. Chlorophyll, carotenoids, carotenoids, phenolic compounds, flavonoids, antioxidants, total nitrogen, crude fiber, mineral content, and vitamins B1 and B2 were also analyzed. The results demonstrated that extended exposure to both types of light enhanced the accumulation of antioxidants, carotenoids, and chlorophyll. Simultaneously, 50IL treatment boosted antioxidant levels and increased total nitrogen, crude fiber, mineral, and vitamin B1 levels compared with continuous light. Therefore, 50IL therapy is considered essential for enhancing the production of antioxidants and essential nutrients, thus aiding wheatgrass growth.
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