The DPPH∙ active EAF (17.2 g) was loaded as a dried slurry of silica g translation - The DPPH∙ active EAF (17.2 g) was loaded as a dried slurry of silica g Indonesian how to say

The DPPH∙ active EAF (17.2 g) was l

The DPPH∙ active EAF (17.2 g) was loaded as a dried slurry of silica gel to column chromatography (45 × 3.5 cm) and eluted with petroleum ether: EtOAc gradient elution (100 : 0—0 : 100), in increasing order of polarity. A total of 92 fractions of 100mL each were collected and analyzed by TLC (Silica gel F254 plates 20 × 20cm, Merck, Germany). TLC analysis was carried out using ethyl acetate: chloroform: formic acid (5:4:1) as the mobile phase and the separated bands were visualized using iodine vapors and vanillin-sulphuric acid reagent. These fractions were pooled to afford seven major fractions (Fr. A: 1–13, Fr. B: 14–35, Fr. C: 36–48, Fr. D: 49–60, Fr. E: 61–70, Fr. F: 71–80, and Fr. G: 81–92) based on TLC analysis. These fractions were tested for bioactivity using DPPH spectrophotometric assay.
For further purification, the highly active Fr. B (2.8 g) was loaded on a silica gel column, eluted with petroleum ether- EtOAc gradients, and the ethyl acetate content of themixture was increased in a series of 5% steps. The inactive and less active proved fractions were discarded. Finally, the active Fr.B2 eluted with petroleum ether-ethyl acetate (85 : 15) yielded 117mg of compound. The purity of isolated compound was establishedbyHPLCandits structurewas confirmed through the interpretation of the spectral data (UV, FT-IR, 1H, 13C NMR, and MS) and further tested for its antioxidant effects.
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DPPH∙ aktif EAF (17.2 g) telah dimuat sebagai bubur kering silica gel untuk Kromatografi kolom (45 × 3.5 cm) dan eluted dengan eter minyak bumi: EtOAc gradien elution (100: 0-0: 100), dalam meningkatkan urutan polaritas. Total 92 pecahan 100 ml masing-masing dikumpulkan dan dianalisis oleh TLC (silika gel F254 piring 20 × 20 cm, Merck, Jerman). TLC analisis dilakukan menggunakan etil asetat: kloroform: formic asam (5:4:1) sebagai fasa mobile dan band-band yang terpisah dilihat dengan menggunakan uap yodium dan reagen asam sulfat vanili. Pecahan ini adalah menggenang mampu tujuh pecahan utama (Fr. A: 1-13, Fr. B: 14-35, Fr. C: 36-48, Fr. D: 49-60, Fr. E: 61-70, Fr. F: 71-80 dan Fr. G: 81 – 92) berdasarkan analisis TLC. Pecahan ini diuji untuk bioactivity menggunakan DPPH Spektrofotometri assay.Untuk pemurnian lebih lanjut, sangat aktif Fr. B (2.8 g) telah dimuat di kolom silika gel, eluted dengan gradien EtOAc eter minyak bumi, dan isi etil asetat themixture meningkat dalam serangkaian langkah-langkah 5%. Yang aktif dan kurang aktif membuktikan pecahan dibuang. Akhirnya, Fr.B2 aktif yang eluted dengan minyak eter-etil asetat (85:15) menghasilkan 117mg senyawa. Kemurnian terisolasi senyawa adalah establishedbyHPLCandits structurewas dikonfirmasi melalui penafsiran data spektral (UV, FT-IR, 1H, 13C NMR, dan MS) dan lebih jauh diuji untuk efek antioksidan.
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