Quantification of trans-resveratrol and soyasaponin Bb in different parts otwo Korean peanut cultivars

초록

Peanut (Arachis hypogaea L.) is a legume with edible seeds that can also be processed into oil and butter. Among its bioactive compounds, trans-resveratrol and soyasaponin Bb are notable secondary metabolites with potential health benefits. The aim of this study was to quantify these metabolites in various parts of two Korean peanut cultivars, ‘Sinpalkwang’ and ‘Sewon,’ by using reverse-phase high-performance liquid chromatography equipped with photodiode array and evaporative light-scattering detectors. Both cultivars exhibited the highest trans-resveratrol content in the cotyledons (0.035 mg/g extract in ‘Sinpalkwang’ and 0.027 mg/g extract in ‘Sewon’) and the highest soyasaponin Bb content in the roots (21.507 mg/g extract in ‘Sinpalkwang’ and 28.957 mg/g extract in ‘Sewon’). Moreover, the amounts of secondary metabolites differed depending on the cultivar and phytotoxin classification. These findings provide valuable insights into the distribution of secondary metabolites in various peanut plant parts and contribute to our understanding of the bioactive compound variation in Korean peanut cultivars. © The Korean Society for Applied Biological Chemistry 2025.

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