Publication: Proximate composition and anti-oxidant activity of organically- and conventionally-grown broccoli (Brassica oleracea L. var. italica)
Authors
Martínez-Tomé, Magdalena ; Mariscal-Arcas, Miguel ; Martínez-Tomé, Juan ; Martínez-Tomé, M. José
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Publisher
Taylor & Francis
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DOI
https://doi.org/10.1080/14620316.2011.11512797
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info:eu-repo/semantics/article
Description
This document is the Published version of a Published Work that appeared in final form in The Journal of Horticultural Science and Biotechnology. To access the final edited and published work see https://doi.org/10.1080/14620316.2011.11512797
Abstract
Increasing interest in organic cultivation led us to undertake a comparative study between organically- and conventionally-grown broccoli during succesive phases of their growth. The results showed similar proximate
compositions in organically- and conventionally-grown crops. Carbohydrate levels were highest (120.6 and 116.6 g kg–1, respectively) at the time of commercial harvest. Broccoli was a good scavenger of peroxyl (50% inhibition) and hydroxyl (65% inhibition) radicals, with no significant differences between those crops grown organically or conventionally.Trolox equivalent anti-oxidant capacity (TEAC) values were slightly higher during all three phases of growth in organically-grown broccoli compared to conventionally-grown broccoli.TEAC values decreased as growth progressed, from 12.80 in Stage 1 to 8.58 in Stage 3 in organically-grown broccoli, and from 10.84 to 5.56 in the equivalent Stages in conventionally-grown broccoli.
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Citation
Journal of Horticultural Science & Biotechnology (2011) 86 (5) 511–516
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