Capacidad antioxidante y contenido fenólico total del extracto acuoso del tallo de matico (buddleja globosa)
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Rev. Inv. Cs. Agro. y Vet.
Abstract
Buddleja globosa (matico) es una planta medicinal nativa de Chile, ampliamente reconocida por las propiedades terapéuticas de sus flores y hojas. Sin embargo, su tallo ha sido poco explorado y generalmente descartado, a pesar de su potencial como fuente de compuestos bioactivos. El objetivo de este estudio fue investigar la concentración de polifenoles y la capacidad antioxidante del tallo de esta planta medicinal. Se cuantificaron compuestos bioactivos, como fenoles totales, flavonoides, vitamina C y catequina. La capacidad antioxidante se evaluó mediante las metodologías ABTS, DPPH y ORAC-H. Los resultados mostraron una elevada concentración de polifenoles totales (2749,78 mg de ácido gálico/100 g PS), flavonoides (2096,53 mg de catequina equivalente/100 g PS) y una significativa capacidad antioxidante en los ensayos ORAC-H (35661,73 μmol Trolox equivalente/100 g PS), ABTS (13404,39 μmol Trolox equivalente/100 g PS) y DPPH (8268,45 μmol Trolox equivalente/100 g PS). Estos hallazgos destacan el valor del tallo de Matico como una rica fuente de compuestos bioactivos. Este es el primer reporte sobre la composición del tallo de Buddleja globosa, sugiriendo que partes de la planta comúnmente descartadas poseen un alto potencial para el desarrollo de productos antioxidantes y terapéuticos.
Buddleja globosa (matico) is a medicinal plant native to Chile, widely recognized for the therapeutic properties of its flowers and leaves. However, its stem has been little explored and generally discarded, despite its potential as a source of bioactive compounds. The aim of this study was to investigate the polyphenol concentration and antioxidant capacity of the stem of this medicinal plant. Bioactive compounds, such as total phenols, flavonoids, vitamin C and catechin, were quantified. The antioxidant capacity was assessed using ABTS, DPPH and ORAC-H methodologies. The results showed a high concentration of total polyphenols (2749.78 mg gallic acid/100 g DW), flavonoids (2096.53 mg catechin equivalent/100 g DW) and a significant antioxidant capacity in the ORAC-H (35661.73 μmol Trolox equivalent/100 g DW), ABTS (13404.39 μmol Trolox equivalent/100 g DW) and DPPH (8268.45 μmol Trolox equivalent/100 g DW) assays. These findings highlight the value of Matico stem as a rich source of bioactive compounds. This is the first report on the stem composition of Buddleja globosa, suggesting that commonly discarded parts of the plant possess a high potential for the development of antioxidant and therapeutic products.
Buddleja globosa (matico) is a medicinal plant native to Chile, widely recognized for the therapeutic properties of its flowers and leaves. However, its stem has been little explored and generally discarded, despite its potential as a source of bioactive compounds. The aim of this study was to investigate the polyphenol concentration and antioxidant capacity of the stem of this medicinal plant. Bioactive compounds, such as total phenols, flavonoids, vitamin C and catechin, were quantified. The antioxidant capacity was assessed using ABTS, DPPH and ORAC-H methodologies. The results showed a high concentration of total polyphenols (2749.78 mg gallic acid/100 g DW), flavonoids (2096.53 mg catechin equivalent/100 g DW) and a significant antioxidant capacity in the ORAC-H (35661.73 μmol Trolox equivalent/100 g DW), ABTS (13404.39 μmol Trolox equivalent/100 g DW) and DPPH (8268.45 μmol Trolox equivalent/100 g DW) assays. These findings highlight the value of Matico stem as a rich source of bioactive compounds. This is the first report on the stem composition of Buddleja globosa, suggesting that commonly discarded parts of the plant possess a high potential for the development of antioxidant and therapeutic products.
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Vol. 9, No. 25