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. 2015 Jun 23;4(2):427-46.
doi: 10.3390/antiox4020427.

Bioactive Compounds and Antioxidant Activity in Different Grafted Varieties of Bell Pepper

Celia Chávez-Mendoza  1 , Esteban Sanchez  2 , Ezequiel Muñoz-Marquez  3 , Juan Pedro Sida-Arreola  4 , Maria Antonia Flores-Cordova  5
Affiliations

Bioactive Compounds and Antioxidant Activity in Different Grafted Varieties of Bell Pepper

Celia Chávez-Mendoza et al. Antioxidants (Basel). .

Abstract

Grafting favors the presence of bioactive compounds in the bell pepper, but many species and varieties have not yet been analyzed in this sense, including commonly grafted varieties. The aim of the present study is to characterize the content in β-carotenes, vitamin C, lycopene, total phenols, and the antioxidant activity of bell pepper (Capsicum annum L.) using the cultivar/rootstock combinations: Jeanette/Terrano (yellow), Sweet/Robusto (green), Fascinato/Robusto (red), Orangela/Terrano (orange), and Fascinato/Terrano (red). The plants were grown in a net-shading system and harvested on three sampling dates of the same crop cycle. The results show statistical differences (p ≤ 0.05) between cultivar/rootstock combinations and sampling dates for the content in bioactive compounds and antioxidant activity. Fascinato/Robusto presented the highest concentration of lycopene and total phenols as well as the greatest antioxidant activity of all cultivar/rootstock combinations evaluated. In addition, it was found that the best sampling time for the peppers to have the highest concentrations of bioactive compounds and antioxidant activity was September.

Keywords: bell pepper; bioactive compounds; grafting.

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Figures

Figure 1
Figure 1
Representative standard curve obtained for vitamin C.
Figure 2
Figure 2
Representative standard curve obtained for total phenols.
Figure 3
Figure 3
Representative standard curve obtained for lycopene.
Figure 4
Figure 4
Representative standard curve obtained for β-carotene.
Figure 5
Figure 5
Representative standard curve obtained for antioxidant capacity.
Figure 6
Figure 6
Samples of bell peppers harvested on 3 July 2013 used in the analysis: (a) Sweet/Robusto; (b) Orangela/Terrano; (c) Fascinato/Robusto; (d) Fascinato/Terrano; and (e) Jeanette/Terrano.
Figure 7
Figure 7
Content in β-carotenes in grafted bell pepper harvested on three different sampling dates. a–e Different letters indicate statistical difference (p ≤ 0.05).
Figure 8
Figure 8
Vitamin C content in grafted bell peppers harvested on three different sampling dates. a,b Different letters indicate statistical difference (p ≤ 0.05).
Figure 9
Figure 9
Lycopene content in grafted bell peppers harvested on three different sampling dates. a–e Different letters indicate statistical difference (p ≤ 0.05).
Figure 10
Figure 10
Total phenols content in grafted bell pepper varieties harvested on three different sampling dates. a–c Different letters indicate statistical difference (p ≤ 0.05).
Figure 11
Figure 11
Antioxidant activity of grafted bell pepper varieties harvested in three different sampling dates. a–d Different letters indicate statistical difference (p ≤ 0.05).
See this image and copyright information in PMC

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