Turkish Journal of Agriculture and Forestry
Polyphenols in northern Hungarian Mentha longifolia (L.) L. treatedwith ultrasonic extraction for potential oenological uses
The main objective of this study is to investigate three equalized batches of a wild Mentha longifolia (ML) population from northern Hungary for extractability by gentle ultrasonic extraction, antioxidant activity, and phenolic constituents. This is the first analytical investigation in a Hungarian population of this species. Antioxidant properties of ML extracts were evaluated with DPPH, photochemiluminescence-O2-. scavenging assay, FRAP, and total polyphenol measurements. HPLC-DAD determination was performed for the main phenolic constituents. The extracts are medium or strong antioxidants in DPPH and FRAP assays and show strong O2-? scavenging capacity. Rutin, quercetin, kaempferol, apigenin, naringenin, rosmarinic, vanillic, gallic, syringic, caffeic, and ferulic acids were identified. All batches were unexpectedly rutin-rich (1700-7500 mg/kg dry herb) and also were rich in rosmarinic acid. Further characteristic traits in the polyphenol profile were a lack of naringenin and (previously not reported) the presence of free kaempferol (up to 30 mg/kg dry herb).
Antioxidant, Hungary, Mentha longifolia, polyphenols, photochemiluminescence, ultrasound
PATONAY, KATALIN; KOROZS, MARIETTA; MURANYI, ZOLTAN; and KÓNYA, ERIKA PÉNZESNÉ
"Polyphenols in northern Hungarian Mentha longifolia (L.) L. treatedwith ultrasonic extraction for potential oenological uses,"
Turkish Journal of Agriculture and Forestry: Vol. 41:
3, Article 6.
Available at: https://journals.tubitak.gov.tr/agriculture/vol41/iss3/6