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Nutritional and Antioxidant Profiling of Vitamin K Dietary Sources
Abstract
The present investigation was an effort to explore the nutritional profile and antioxidant indices of vitamin K dietary sources i.e., spinach and soybean. For the purpose, spinach and soybean were nutritionally characterized with special reference to vitamin K content. The proximate composition of spinach exhibited that moisture, crude protein, crude fat, crude fiber, ash and Nitrogen Free Extract (NFE) as 90.71±4.14, 2.03±0.95, 0.32±0.007, 0.58±0.02, 1.24±0.06 and 5.01±0.11%, respectively. However, tested soybean indicated the values respective traits as 8.96±0.45, 32.28±1.99, 18.64±1.02, 2.93±0.16, 3.38±0.19 and 33.79±1.15%. Furthermore, spinach showed good mineral profile dominated by magnesium, potassium and calcium whilst soybean is abundant in potassium, zinc and magnesium. The HPLC quantification of vitamin K revealed that spinach contained 379.09 μg/100g phylloquinone as compared to soybean 29.79 μg/100g. Amongst antioxidant extracts, methanolic extracts of spinach and soybean showed higher total phenolic, DPPH scavenging and antioxidant activities. In conclusion, spinach showed higher antioxidant status and phylloquinone as compared to soybean however, soybean contained ample amount of protein and fat contents.
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Antioxidant status, nutritional profile, soybean, spinach, vitamin KArticle Metrics
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Copyright (c) 2013 Asian Network for Scientific Information
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This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.
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Yasin, M., Butt, M. S., Anjum, F. M., & Shahid, M. (2013). Nutritional and Antioxidant Profiling of Vitamin K Dietary Sources. Pakistan Journal of Nutrition, 12(11), 996–1002. https://doi.org/10.3923/pjn.2013.996.1002
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