International Journal on Science and Technology

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Yacon: Phytochemical Diversity and Antioxidant Potency Across Plant Parts

Author(s) Dr. Merlyn Galagar Gonzales
Country Philippines
Abstract This study characterized the phytochemical composition and antioxidant capacity of yacon (Smallanthus sonchifolius) organs cultivated in Doalnara Aposkahoy, Claveria, Misamis Oriental, Philippines. Recognized as a functional food, yacon was analyzed for key phytochemicals—including alkaloids, flavonoids, phenolics, tannins, saponins, triterpenoids, steroids, and cardiac glycosides—and antioxidant properties via DPPH radical scavenging, ferric reducing antioxidant power (FRAP), total phenolic content, and total flavonoid content assays.
Plant parts were screened for alkaloids, phenolics, tannins, saponins, triterpenoids, steroids, and cardiac glycosides. Antioxidant potential was measured by DPPH radical-scavenging, ferric-reducing antioxidant power (FRAP), and total phenolic content assays. Results revealed trace to moderate alkaloids across various parts of yacon and variable distributions of tannins, phenolics, and saponins, indicating potential nutritional and therapeutic value. Antioxidant activity was highest in stems, flowers, and leaves, while tubers showed comparatively lower activity—contrasting some previous reports and offering new insights into organ-specific bioactivity. Overall, findings support yacon’s potential as a functional food and highlight heterogeneous phytochemical and antioxidative profiles among organs. Further work is recommended to isolate bioactive constituents and assess broader nutraceutical and pharmacological applications.
Keywords: Smallanthus sonchifolius, antioxidant activity, phytochemical composition, alkaloids, phenolics
Keywords Smallanthus sonchifolius, antioxidant activity, phytochemical composition, alkaloids, phenolics
Field Chemistry
Published In Volume 17, Issue 2, April-June 2026
Published On 2026-06-24
DOI https://doi.org/10.71097/IJSAT.v17.i2.11253
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