The DOI matches its Crossref record.
Antioxidant Activity of Betalains from Plants of the Amaranthaceae
Abstract
Antioxidant activity of betalain pigments (seven pure compounds and four combined fractions) from plants of the family Amaranthaceae was evaluated using the modified DPPH(*) (1,1-diphenyl-2-picrylhydrazyl) method. All tested betalains exhibited strong antioxidant activity. Their EC(50) values ranged from 3.4 to 8.4 microM. Gomphrenin type betacyanins (mean = 3.7 microM) and betaxanthins (mean = 4.2 microM) demonstrated the strongest antioxidant activity, 3-4-fold stronger than ascorbic acid (13.9 microM) and also stronger than rutin (6.1 microM) and catechin (7.2 microM). Antioxidant activity of the tested betalains decreased in the following order: simple gomphrenins > acylated gomphrenins > dopamine-betaxanthin > (S)-tryptophan-betaxanthin > 3-methoxytyramine-betaxanthin > betanin/isobetanin > celosianins > iresinins > amaranthine/isoamaranthine. This study also investigated and discussed the relationship between the chemical structure and the activity of the betalains. The free radical scavenging activity of the betalains usually increased with the numbers of hydroxyl/imino groups and, moreover, depended on the position of hydroxyl groups and glycosylation of aglycones in the betalain molecules.
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Citations
Cited by
Uttara, B., Singh, A., Zamboni, P., & Mahajan, R. (2009) · Current Neuropharmacology · doi:10.2174/157015909787602823 · Cited by 3,378
Antioxidant assays for plant and food components
Moon, J.-K., & Shibamoto, T. (2009) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf803537k · Cited by 958
Antioxidant activities of aqueous extracts of selected plants
WONG, S., LEONG, L., & WILLIAMKOH, J. (2006) · Food Chemistry · doi:10.1016/j.foodchem.2005.07.058 · Cited by 851
Betalain Stability and Degradation—Structural and Chromatic Aspects
Herbach, K. M., Stintzing, F. C., & Carle, R. (2006) · Journal of Food Science · doi:10.1111/j.1750-3841.2006.00022.x · Cited by 608
Kostova, I., Bhatia, S., Grigorov, P., Balkansky, S., S. Parmar, V., K. Prasad, A., & Saso, L. (2011) · Current Medicinal Chemistry · doi:10.2174/092986711803414395 · Cited by 435
Metadata
- Authors
- Cai, Y., Sun, M., & Corke, H.
- Venue
- Journal of Agricultural and Food Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-03-14
- Volume
- 51
- Issue
- 8
- Pages
- 2288-2294
- ISSN
- 0021-8561 (ISSN-L)
- 1520-5118
- OpenAlex
- W2005240259
- Cited by
- 680
- References
- 0
- FWCI
- 13.16
- Type
- journal article
- Language
- en
- Open access
- closed
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