Objective: This study aims to determine antibacterial activity of Anredera cordifolia leaves extracts and fractions.Methods: Crude drug was extracted using two methods. First method was extraction by reflux using ethanol 96% and then fractionated by liquidliquid extraction using n-hexane and ethyl acetate. Second method was gradually extraction by reflux using n-hexane, ethyl acetate and ethanol 96%, respectively. Phytochemical screening was applied to all extracts and fractions, followed by thin-layer chromatography using ursolic acid, oleanolic acid (OA), apigetrin, and rutin as reference substances. A two-fold serial microdilution method was used to determine minimum inhibitory concentration (MIC) against Staphylococcus aureus (ATCC 6538), methicillin-susceptible S. aureus, methicillin resistant S. aureus (MRSA), Bacillus subtilis (ATCC 6633), Bacillus cereus (ATCC 11778), Pseudomonas aeruginosa (ATCC 9027), Escherichia coli (ATCC 8939), E. coli H7 (O156), and ESBL E. coli. Bacteriostatic and bactericidal activities were determined using minimum bactericidal concentration/MIC ratio. Results:The ethanolic extract, n-hexane and ethyl acetate fractions of A. cordifolia from the first method had antibacterial activity against S. aureus, MRSA, B. subtilis, and B. cereus (MIC 256-512 μg/ml). However, n-hexane and ethyl acetate extract from the second method had broad spectrum of antibacterial activity, which could inhibit the growth of S. aureus, MRSA, B. subtilis, P. aeruginosa, and E. coli (MIC 256-512 μg/ml). Extracts and fractions showed bacteriostatic and bactericidal activities, but n-hexane extract has most bactericidal activity. Furthermore, steroid/triterpenoid, ursolic, and OA were found in this extract. Conclusion:The n-hexane extract from the second method showed the highest antibacterial activity.
<em>Virgin coconut oil</em> (VCO) dan madu telah banyak digunakan sebagai bahan baku sediaan topikal untuk perawatan kulit. Salah satu khasiat yang telah terbukti adalah aktivitas antioksidannya. Namun efek VCO dan madu sebagai antioksidan umumnya masih dibuktikan dalam bentuk bahan tunggal tidak dalam bentuk kombinasi keduanya. Pengujian aktivitas antioksidan dengan metode DPPH memerlukan sampel uji yang bersifat polar. Fraksi metanol dari VCO dan madu telah diketahui bersifat polar. Tujuan penelitian ini adalah menentukan kombinasi fraksi metanol VCO dan madu kele Bali yang memberikan aktivitas antioksidan paling kuat. VCO dan madu kele Bali diperoleh dari Desa Aan, Bali. Skrining fitokimia fraksi metanol VCO dan madu kele Bali ditentukan ditentukan dengan metode yang sesuai. Aktivitas antioksidan (IC<sub>50</sub>) fraksi metanol VCO, madu kele Bali, dan kombinasi keduanya ditentukan dengan metode DPPH. Terdapat 5 kombinasi kedua bahan tersebut yang diuji. Data dianalisis menggunakan ANOVA oneway-LSD dengan taraf kepercayaan 95%. Fraksi metanol VCO mengandung flavonoid dan tanin, sedangkan madu kele Bali mengandung saponin, fenol, flavonoid dan steroid/triterpenoid. Fraksi metanol VCO dan madu kele Bali memiliki aktivitas antioksidan dengan nilai IC<sub>50</sub> berturut-turut sebesar 7,20±0,23 mg/mL dan 14,56±0,25 mg/mL. Perbandingan jumlah kombinasi fraksi metanol VCO dan madu kele Bali berpengaruh secara bermakna terhadap aktivitas antioksidannya (p<0,05). Kombinasi 0,0063 g fraksi metanol VCO dan 1 g madu kele Bali menunjukkan aktivitas antioksidan paling kuat (IC<sub>50</sub> 8,50±0,17 mg/mL). Fraksi metanol VCO dan madu kele Bali serta kombinasinya tergolong antioksidan lemah, namun terjadi peningkatan aktivitas antioksidan yang bermakna pada kombinasi ini dibandingkan madu kele Bali tunggal (p<0,05).
Context: Aging is closely related to reactive oxygen species (ROS). ROS increases the collagenase enzyme (MMP-1) levels and collagen degradation that causes skin wrinkling. Secang wood (Caesalpinia sappan L.) containing brazilin and brazilein has been shown to have photoprotective and antioxidant properties. Aims: To evaluate the activity of C. sappan nanoemulgel as antiaging agent against the target protein, matrix metalloproteinases (MMPs), especially MMP-1, MMP-3, and MMP-9 by in silico assay and using in vivo assay through MMP-1 and collagen expression parameter. Methods: C. sappan nanoemulgel was made by mixing the gel base with C. sappan nanoemulsion from heartwood extract. The C. sappan nanoemulsion was formulated using the Self Nanoemulsifying Drug Delivery System method. In vivo testing was conducted with a post-test-only control group design and used male Wistar rats. MMP-1 expression was examined using immunohistochemical techniques, and the amount of dermal collagen was observed with Picro Sirius Red staining. In silico assay using a computational method with Autodock 4.2 program. Results: C. sappan nanoemulgel concentrations of 0.0625, 0.125, and 0.25% obstruct the expression of MMP-1 and collagen degradation. The bond energy value to MMP-1, MMP-3, and MMP-9 were -8.04, -10.40, and -8.70 kcal/mol (for brazilin); -8.82; -10.99, and -8.51 kcal/mol (for brazilein). Conclusions: Nanoemulgel containing C. sappan nanoemulsion has a potential activity as an antiaging agent by repressing MMP-1 expression and dermal collagen degradation. C. sappan nanoemulgel 0.25% showed the best result as antiaging. Brazilin and brazilein from C. sappan inhibit the MMP-1, MMP-3, and MMP-9 by in silico assay.
Endophytic fungi isolated from Antidesma bunius leaves were investigated in this study. Six fungal endophytes were identified as Penicillium steckii AAB-01, Nemania bipapillata AAB-02, Xylaria feejeensis AAB-03, Hypomontagnella monticulosa AAB-04, Daldinia eschscholtzii AAB-05, and Phyllosticta capitalensis AAB-06. All of the isolated endophytic fungi were subjected to fermentation on rice media, followed by extraction with ethyl acetate. When tested for antibacterial activity, P. steckii AAB-01 extract showed the most potent inhibition against Staphylococcus aureus ATCC 6538 and Staphylococcus epidermidis ATCC 12228. Toxicity screening employing brine shrimp lethality test (BSLT) revealed potential toxicity of P. steckii AAB-01 and X. feejeensis AAB-03 extracts. Further investigation showed P. steckii AAB-01 extract had the highest inhibition toward MCF-7 cells, while D. eschscholtzii AAB-05 extract revealed the strongest cytotoxicity against 4T1 cells. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis tentatively identified five compounds, where indole acetic acid, O-acetylharmol, and oxindole I were suggested as the major metabolites in P. steckii AAB-01 extract, while 6-hydroxymelatonin and 2-methyl-6pentadecylpyridine were suggested as the major metabolites in D. eschscholtzii AAB-05 extract. This is the first report on LC-MS/MS identification of the main metabolites from bioactive extracts of P. steckii AAB-01 and D. eschscholtzii AAB-05 isolated from the leaves of A. bunius, which might contribute to the antibacterial and cytotoxic properties of the extracts. Thus, a detailed investigation of antibacterial and cytotoxic metabolites from these endophytes merits further studies.
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