Evaluation of Phenolic compounds in Perilla (Perilla frutescens) Germplasm from Korea

Perilla (Perilla frutescens) is an annual herb plant and oil seed crop belonging to the Lamiaceae and is native to regions of Asia. The leaves of perilla (P. frutescens var. frutescens) are used as vegetables and pickles in Korea, whereas those of shiso (P. frutescens var. crispa) are more often used in China and Japan for medicine and food flavouring. The leaf of Perilla is a rich source of phenolic compounds, including rosmarinic acid and scutellarin, but there is still a lack of quantitative information concerning the contents of phenolic compounds. Rosmarinic acid is the most abundant phenolic compound, and scutellarin is the second most abundant in perilla. We investigated individual phenolic compounds using Ultra-High Performance Liquid Chromatography (UPLC) and evaluated major phenolic compounds in 115 perilla germplasm accessions collected from Korea. Wide variations in scutellarein-7-O-glucuronide (636.24 to 1933.62 mg/100 g), luteolin-7-O-glucuronide (73.88 to 664.23 mg/100g), apigenin-7-O-glucuronide (60.49 to 588.07mg/100 g), caffeic acid (2.94 to 19.41 mg/100 g) and rosmarinic acid (1274.08 to 5189.86 mg/100 g) in perilla and scutellarein-7-O-glucuronide (356.07 to 1949.91 mg/100 g), luteolin-7-O-glucuronide (67.63 to 563.84 mg/100g), apigenin-7-O-glucuronide (46.32 to 404.23 mg/100g), caffeic acid (3.73 to 72.25 mg/100g) and rosmarinic acid (1609.47 to 5535.59 mg/100g) in shiso were observed but there needs to be another step in the analysis of the minor contents of these similar compounds. The data on higher concentrations of phenolic compounds can provide baseline information for evaluating the phytochemicals of perilla and improving varieties.

 

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Publication History

Article published online:
16 November 2023