RP-HPLC AND HPTLC-BASED PHYTOCHEMICAL STUDIES OF ENDEMIC<i> NEPETA</i><i> CADMEA</i> BOISS. AND ITS EFFECTS ON CARBOHYDRATE DIGESTIVE ENZYMES


Kalender S., GÖKBULUT A., Ozupek B., PEKACAR S., Orhan D. D.

STUDIA UNIVERSITATIS BABES-BOLYAI CHEMIA, cilt.70, sa.4, ss.263-274, 2025 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 70 Sayı: 4
  • Basım Tarihi: 2025
  • Doi Numarası: 10.24193/subbchem.2025.4.15
  • Dergi Adı: STUDIA UNIVERSITATIS BABES-BOLYAI CHEMIA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Central & Eastern European Academic Source (CEEAS)
  • Sayfa Sayıları: ss.263-274
  • Gazi Üniversitesi Adresli: Evet

Özet

This study investigated the in vitro inhibitory potential of the methanol extract of the aerial parts of Nepeta cadmea on alpha-glucosidase and alpha-amylase, which are known as key enzymes related to type 2 diabetes mellitus. To determine the active constituents of the endemic Lamiaceae plant, validated RP-HPLC and HPTLC techniques were used. The methanol extract demonstrated moderate and dose-dependent inhibitory activity, with inhibition rates of 43.57 +/- 4.32% against alpha-glucosidase at 2 mg/mL and 36.74 +/- 7.23% against alpha-amylase at 1 mg/mL. Phytochemical analysis revealed that rosmarinic acid (0.6290 +/- 0.0095 g/100g dw) was the predominant phenolic compound, followed by chlorogenic acid (0.0429 +/- 0.0012 g/100g dw) and caffeic acid (0.0027 +/- 0.0002 g/100g dw). These findings suggest that this endemic Lamiaceae plant may have potential as a natural therapeutic agent for managing diabetes mellitus. Further studies are warranted to explore its mechanisms of action and to evaluate its efficacy in clinical settings.