Evaluation of the antioxidant activity of wheatgrass (Triticum aestivum L.) as a function of growth under different conditions

Phytotherapy Research : PTR
Sunil D KulkarniA V Reddy

Abstract

The antioxidant activity of wheatgrass, which is consumed as a dietary supplement, was estimated at different levels. The methods employed include FRAP (ferric reducing antioxidant power), ABTS (2,2'-azobis-3-ethylbenzthiazoline-6-sulfonic acid) and DPPH (1,1'-diphenyl-2-picrylhydrazyl) assays. Aqueous and ethanol extracts of wheatgrass grown under different conditions over a period of 6, 7, 8, 10 and 15 days were used. Lipid peroxidation and oxygen radical absorbance capacity (ORAC) were determined and utilized to check the potency of a few selected extracts. Different conditions used for growth were (1) tap water, (2) tap water with nutrients, (3) soil and tap water, and (4) soil with nutrients. For comparison, a commercially available wheatgrass tablet was analysed. To explain the reasons behind the observed differences, the total phenolic and flavonoid contents of the extracts were measured. These contents increased with growth under all the conditions. The ethanol extracts were found to have a higher phenolic and flavonoid content than the aqueous extracts. The highest FRAP values occurred on day 15 of growth under condition 4, the values being 0.463 and 0.573 mmol of ascorbic acid and Trolox equivalents/100 g fresh wheatg...Continue Reading

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Citations

Jan 1, 2009·Indian Journal of Clinical Biochemistry : IJCB·Vasudha ShuklaSom Nath Singh
Apr 9, 2008·Journal of Clinical Biochemistry and Nutrition·Ashok D B Vaidya, Thomas P A Devasagayam
Mar 29, 2014·TheScientificWorldJournal·Shagun AroraSimran Tandon
Apr 5, 2014·Journal of Dietary Supplements·Varalakshmi DurairajRukkumani Rajagopalan
Apr 8, 2014·The Journal of Membrane Biology·Varalakshmi DurairajRukkumani Rajagopalan
Sep 4, 2009·Journal of Hematology & Oncology·Subhash PadhyeFazlul H Sarkar
May 31, 2015·Nutrition in Clinical Practice : Official Publication of the American Society for Parenteral and Enteral Nutrition·Alyssa M ParianGerard E Mullin
Aug 15, 2014·Toxicology and Industrial Health·Garima ShakyaRukkumani Rajagopalan
Jul 7, 2020·Journal of Food Science and Technology·Ivan M Savic, Ivana M Savic Gajic
Oct 24, 2014·World Journal of Gastroenterology : WJG·Ping WanAi-Ping Bai

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