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Majalah Obat TradisionalMajalah Obat Tradisional

Tithonia diversifolia, known as Mexican sunflower, has been widely used as an herbal medicine to treat diabetes. This study used FTIR fingerprint spectra combined with chemometrics to differentiate T. diversifolia leaves extracts with different extracting solvents and their correlation with the inhibition of α-glucosidase activity. T. diversifolia collected from two growing locations (West Bandung and Sleman, Indonesia) was extracted with absolute ethanol, 50% ethanol, and water using ultrasonication. The absolute ethanol extract yielded a higher IC50 than the 50% ethanol and water extract. The FTIR spectra of each extract had a different profile, implying that the composition and the concentration of the metabolite extracted were relatively distinct. Absorbance data from the FTIR spectra in the 4000–400 cm−1 range were used to group all extracts according to the extracting solvent using principal component analysis (PCA). Before PCA, the FTIR spectra were subjected to signal preprocessing using a standard normal variate. We found that all of the extracts could be distinguished based on the extracting solvents using principal components (PC) 1 and 2 with a cumulative percentage of approximately 87%. Partial least square regression (PLSR) was used to correlate the FTIR spectra and the inhibition of the α-glucosidase activity to obtain a functional group of a metabolite that contributed to inhibiting the α-glucosidase activity. From the PLSR, peaks from the wavenumbers at 3300 cm−1, 3000 cm−1, 1650 cm−1, 1350 cm−1, and 1100 cm−1 corresponded to the O-H, CH3, CH2, C=C, and C-O, which were thought to be responsible for inhibiting the α-glucosidase. Therefore, these functional groups were owned by the metabolites in the T. diversifolia leaves extracts that contributed to the inhibition of α-glucosidase.

Penelitian ini menunjukkan bahwa profil sidik jari FTIR dari ekstrak daun Tithonia diversifolia yang diekstraksi dengan etanol absolut, etanol 50%, dan air memiliki karakteristik yang berbeda.Ekstrak dari berbagai pelarut dapat dikelompokkan menggunakan PCA, namun tidak berdasarkan lokasi pertumbuhan.Analisis PLSR mengidentifikasi gugus fungsi O-H, CH3, CH2, C=C, dan C-O sebagai kontributor utama terhadap aktivitas penghambatan α-glukosidase.

Penelitian lanjutan dapat difokuskan pada identifikasi dan isolasi senyawa spesifik dalam ekstrak T. diversifolia yang bertanggung jawab atas aktivitas penghambatan α-glukosidase, menggunakan metode seperti kromatografi dan spektrometri massa. Selain itu, studi lebih lanjut diperlukan untuk mengeksplorasi mekanisme aksi senyawa-senyawa tersebut pada tingkat molekuler, termasuk interaksi mereka dengan enzim α-glukosidase. Terakhir, penelitian in vivo pada model hewan atau manusia dapat dilakukan untuk menguji efektivitas dan keamanan ekstrak T. diversifolia atau senyawa aktifnya sebagai agen antidiabetes potensial, serta untuk mengoptimalkan formulasi dan dosis yang tepat. Penelitian ini akan memberikan pemahaman yang lebih komprehensif tentang potensi terapeutik T. diversifolia dalam pengelolaan diabetes dan membuka jalan bagi pengembangan obat antidiabetes baru.

  1. Combination of FTIR-based Fingerprinting and Chemometrics Analysis for Discrimination of Tithonia diversifolia... journal.ugm.ac.id/TradMedJ/article/view/93996Combination of FTIR based Fingerprinting and Chemometrics Analysis for Discrimination of Tithonia diversifolia journal ugm ac TradMedJ article view 93996
  2. SENYAWA INHIBITOR α-GLUKOSIDASE DAN ANTIOKSIDAN DARI KUMIS KUCING DENGAN PENDEKATAN METABOLOMIK... doi.org/10.6066/jtip.2016.27.1.17SENYAWA INHIBITOR GLUKOSIDASE DAN ANTIOKSIDAN DARI KUMIS KUCING DENGAN PENDEKATAN METABOLOMIK doi 10 6066 jtip 2016 27 1 17
  3. SENYAWA INHIBITOR α-GLUKOSIDASE DAN ANTIOKSIDAN DARI KUMIS KUCING DENGAN PENDEKATAN METABOLOMIK... journal.ipb.ac.id/index.php/jtip/article/view/14743SENYAWA INHIBITOR GLUKOSIDASE DAN ANTIOKSIDAN DARI KUMIS KUCING DENGAN PENDEKATAN METABOLOMIK journal ipb ac index php jtip article view 14743
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