2024-03-28T20:56:14Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/178752019-02-27T09:47:41Zcom_10261_72com_10261_6col_10261_325
DIGITAL.CSIC
author
Pandjaitan, N.
author
Howard, L. R.
author
Morelock, T.
author
Gil Muñoz, M.ª Isabel
funder
Department of Agriculture (US)
2009-10-21T09:40:23Z
2009-10-21T09:40:23Z
2005-09-30
Journal of Agricultural and Food Chemistry 53(22): 8618-8623 (2005)
0021-8561
http://hdl.handle.net/10261/17875
10.1021/jf052077i
1520-5118
http://dx.doi.org/10.13039/100000199
Spinach leaves harvested at three maturity stages from eight commercial cultivars (CC) and eight advanced breeding lines (ABL) were evaluated for oxygen radical absorbing capacity (ORAC), total phenolics, and flavonoid composition and content. ABL had higher levels of total phenolics, total flavonoids, and ORAC than CC. Midmaturity spinach leaves had higher levels of total phenolics, total flavonoids, and antioxidant capacity than immature and mature leaves. The contents of individual flavonoids varied in response to maturation, with the predominant glucuronated flavones decreasing and patuletin and spinacetin derivatives increasing. Both total phenolics and total flavonoids correlated well with ORAC (rxy = 0.78 and 0.81, respectively) demonstrating that flavonoids were major contributors to antioxidant capacity. Our results indicate that spinach genotypes should be harvested at the midmaturity stage for consumers to benefit from elevated levels of health promoting flavonoids present in the leaves. Additionally, plant breeders can select for increased phenolic content to increase antioxidant capacity of spinach genotypes.
eng
closedAccess
Antioxidant capacity
Flavonoids
Genotype
Maturity
Spinach
Antioxidant Capacity and Phenolic Content of Spinach As Affected by Genetics and Maturation
artículo
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