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      Pencirian Profil Kimia Kumis Kucing (Orthosiphon aristatus) Menggunakan DART-TOFMS dengan Pendekatan Kemometrik PCA dan OPLS-DA

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      Date
      2025
      Author
      Fadhlurrahman, Mohammad
      Heryanto, Rudi
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      Abstract
      Kumis kucing (Orthosiphon aristatus) banyak digunakan sebagai bahan baku obat tradisional dan pemanfaatannya dipengaruhi oleh variasi kandungan kimianya. Penelitian ini dilakukan untuk mengkarakterisasi profil kimia dan aktivitas antibakteri daun kumis kucing yang diperoleh dari dua lokasi (Bogor dan Sukabumi). Sampel dianalisis menggunakan DART-TOFMS, aktivitas antibakteri ekstrak terhadap Staphylococcus aureus dan Escherichia coli, dan analisis kemometrik (PCA dan OPLS-DA). Sebanyak 18 senyawa kimia terdeteksi, termasuk 2 senyawa unik yang hanya terdapat pada sampel Bogor dan 5 senyawa unik yang hanya terdapat pada sampel Sukabumi. Ekstrak dari Sukabumi menghasilkan zona hambat yang lebih besar dibandingkan dengan ekstrak dari Bogor. Analisis PCA dan OPLS-DA mengungkapkan pemisahan spektrum kimia yang jelas antara kedua lokasi. DART-TOFMS yang dikombinasikan dengan kemometrik terbukti efektif dan akurat untuk karakterisasi cepat sebagai pendukung pengendalian kualitas kumis kucing sebagai bahan baku obat herbal.
       
      Kumis kucing (Orthosiphon aristatus) was widely used as a raw material for traditional medicine and its utilization was influenced by the variation in chemical constituents. This study was conducted to characterize the chemical profiles and antibacterial activities of kumis kucing leaves obtained from two locations (Bogor and Sukabumi). The samples were analyzed using DART-TOFMS, antibacterial activity of the extracts against Staphylococcus aureus and Escherichia coli was assessed, and chemometric analyses (PCA and OPLS-DA) were performed. A total of 18 compounds were detected, including 2 compounds unique to Bogor samples and 5 compounds unique to Sukabumi samples. Extracts from Sukabumi produced larger inhibition zones compared to those from Bogor. PCA and OPLS DA analyses revealed a clear separation of chemical spectra between the two locations. It was demonstrated that DART-TOFMS combined with chemometrics was an effective and accurate approach for rapid characterization, supporting the quality control of kumis kucing as a raw material for herbal medicine.
       
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      http://repository.ipb.ac.id/handle/123456789/171238
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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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