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Multivariate analysis of tronchuda cabbage (Brassica oleracea L. var. costata DC) phenolics: influence of fertilizers.
J Agric Food Chem. 2008 Mar 26; 56(6):2231-9.JA

Abstract

A field experiment was carried out to investigate the effect of fertilization level on the phenolic composition of tronchuda cabbage (Brassica oleracea L. var. costata DC) external and internal leaves. Eight different plots were constituted: a control without fertilization, one with organic matter, and six experiments with conventional fertilizers (nitrogen, boron, and sulfur, two levels each). The phenolic compounds were analyzed by reversed-phase HPLC-DAD. External and internal leaves revealed distinct qualitative composition. In the internal leaves were found 15 phenolics (5 kaempferol and 10 cinnamic acid derivatives), whereas the external leaves presented 3- p-coumaroylquinic acid and 13 kaempferol derivatives. Principal component analysis (PCA) was applied to assess the relationships between phenolic compounds, agronomical practices, and harvesting time. Samples obtained with conventional practices were quite effectively separated from organic samples, for both types of leaves. In general, samples developed without any fertilization presented the highest phenolics amounts: external and internal leaves contained 1.4- and 4.6-fold more phenolic compounds than the ones that received conventional fertilizer, respectively, and the internal leaves presented 2.4 times more phenolics than the ones grown with organic amendment. Additionally, samples from organic production exhibited higher total phenolics content than those from conventional practices, collected at the same time. Samples harvested first were revealed to be distinct from the ones collected later. The results show that it is possible to grow tronchuda cabbage without excess fertilizers, with highest amounts of phenolics and reduced environment contamination.

Authors+Show Affiliations

REQUIMTE/Serviço de Farmacognosia, Faculdade de Farmácia, Universidade do Porto, R. Aníbal Cunha, 164, 4050-047 Porto, Portugal.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18290619

Citation

Sousa, Carla, et al. "Multivariate Analysis of Tronchuda Cabbage (Brassica Oleracea L. Var. Costata DC) Phenolics: Influence of Fertilizers." Journal of Agricultural and Food Chemistry, vol. 56, no. 6, 2008, pp. 2231-9.
Sousa C, Pereira DM, Pereira JA, et al. Multivariate analysis of tronchuda cabbage (Brassica oleracea L. var. costata DC) phenolics: influence of fertilizers. J Agric Food Chem. 2008;56(6):2231-9.
Sousa, C., Pereira, D. M., Pereira, J. A., Bento, A., Rodrigues, M. A., Dopico-García, S., Valentão, P., Lopes, G., Ferreres, F., Seabra, R. M., & Andrade, P. B. (2008). Multivariate analysis of tronchuda cabbage (Brassica oleracea L. var. costata DC) phenolics: influence of fertilizers. Journal of Agricultural and Food Chemistry, 56(6), 2231-9. https://doi.org/10.1021/jf073041o
Sousa C, et al. Multivariate Analysis of Tronchuda Cabbage (Brassica Oleracea L. Var. Costata DC) Phenolics: Influence of Fertilizers. J Agric Food Chem. 2008 Mar 26;56(6):2231-9. PubMed PMID: 18290619.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Multivariate analysis of tronchuda cabbage (Brassica oleracea L. var. costata DC) phenolics: influence of fertilizers. AU - Sousa,Carla, AU - Pereira,David M, AU - Pereira,José A, AU - Bento,Albino, AU - Rodrigues,M Angelo, AU - Dopico-García,Sonia, AU - Valentão,Patrícia, AU - Lopes,Graciliana, AU - Ferreres,Federico, AU - Seabra,Rosa M, AU - Andrade,Paula B, Y1 - 2008/02/22/ PY - 2008/2/23/pubmed PY - 2008/6/12/medline PY - 2008/2/23/entrez SP - 2231 EP - 9 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 6 N2 - A field experiment was carried out to investigate the effect of fertilization level on the phenolic composition of tronchuda cabbage (Brassica oleracea L. var. costata DC) external and internal leaves. Eight different plots were constituted: a control without fertilization, one with organic matter, and six experiments with conventional fertilizers (nitrogen, boron, and sulfur, two levels each). The phenolic compounds were analyzed by reversed-phase HPLC-DAD. External and internal leaves revealed distinct qualitative composition. In the internal leaves were found 15 phenolics (5 kaempferol and 10 cinnamic acid derivatives), whereas the external leaves presented 3- p-coumaroylquinic acid and 13 kaempferol derivatives. Principal component analysis (PCA) was applied to assess the relationships between phenolic compounds, agronomical practices, and harvesting time. Samples obtained with conventional practices were quite effectively separated from organic samples, for both types of leaves. In general, samples developed without any fertilization presented the highest phenolics amounts: external and internal leaves contained 1.4- and 4.6-fold more phenolic compounds than the ones that received conventional fertilizer, respectively, and the internal leaves presented 2.4 times more phenolics than the ones grown with organic amendment. Additionally, samples from organic production exhibited higher total phenolics content than those from conventional practices, collected at the same time. Samples harvested first were revealed to be distinct from the ones collected later. The results show that it is possible to grow tronchuda cabbage without excess fertilizers, with highest amounts of phenolics and reduced environment contamination. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/18290619/Multivariate_analysis_of_tronchuda_cabbage__Brassica_oleracea_L__var__costata_DC__phenolics:_influence_of_fertilizers_ L2 - https://doi.org/10.1021/jf073041o DB - PRIME DP - Unbound Medicine ER -