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All Journal Makara Journal of Science Bulletin of Chemical Reaction Engineering & Catalysis
Sianturi, Julinton
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Antioxidant Constituents from the Bark of Aglaia eximia (Meliaceae) Sianturi, Julinton; Farabi, Kindi; Mayanti, Tri; Harneti, Desi; Darwati,; Supratman, Unang; Awang, Khalijah; Hayashi, Hideo
Makara Journal of Science Vol. 20, No. 1
Publisher : UI Scholars Hub

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Abstract

The genus Aglaia is a a rich source of different compounds with interesting biological activities. A part of our continuing search for novel biologically active compounds from Indonesia Aglaia plants, the ethyl acetate extract of bark of Aglaia eximia showed significant antioxidant activity. Four antioxidant compounds, kaempferol (1), kaempferol-3-O-α-L-rhamnoside (2), kaempferol-3-O-β-D-glucoside (3) and kaempferol-3-O-β-D-glucosyl-(1→4)-α-L-rhamnoside (4) were isolated from the bark of Aglaia eximia (Meliaceae). The chemical structures of compounds 1-4 were identified on the basis of spectroscopic datas including UV, IR, NMR and MS along with by comparison with those spectra datas previously reported. All compounds showed DPPH radical-scavenging activity with IC50 values of 1.18, 6.34, 8.17, 10.63 mg/mL, respectively.
Flavonoid Compounds from the Bark of Aglaia eximia (Meliaceae) Sianturi, Julinton; Purnamasari, Mayshah; Mayanti, Tri; Harneti, Desi; Supratman, Unang; Awang, Khalijah; Hayashi, Hideo
Makara Journal of Science Vol. 19, No. 1
Publisher : UI Scholars Hub

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Three flavonoid compounds, kaempferol (1), kaempferol-3-O-α-L-rhamnoside (2), and kaempferol-3-O-β-D-glucosyl-α-L-rhamnoside (3), were isolated from the bark of Aglaia eximia (Meliaceae). The chemical structures of compounds 1–3 were identified with spectroscopic data, including UV, IR, NMR (1H, 13C, DEPT 135°, HMQC, HMBC, 1H-1H-COSY NMR), and MS, as well as a compared with previously reported spectra data. All compounds were evaluated for their cytotoxic effects against P-388 murine leukemia cells. Compounds 1–3 showed cytotoxicity against P-388 murine leukemia cells with IC50 values of 1.22, 42.92, and >100 mg/mL, respectively
Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste Ahmad, Eka Fitriani; Lestari, Puji; Oginawati, Katharina; Yulizar, Yoki; Sianturi, Julinton; Munir, Muhammad Miftahul; Adawiah, Adawiah
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 1 Year 2026 (April 2026)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20537

Abstract

This study investigates the role of anthraquinone (AQ) in decomposing coconut husk waste, specifically collected from Banten, to produce pure α-cellulose pulp. The process used sodium hydroxide (NaOH) at 10%, 15%, and 20% concentrations, with 0.1 g of AQ added as a catalyst, and a waste-to-liquid ratio of 1:8 throughout. The goal is to accelerate lignin degradation while protecting cellulose in the material, thereby yielding higher-quality pulp. The Banten coconut husk analysis showed an α-cellulose content of 30.38%. Higher NaOH concentrations reduced pulp yield but increased lignin removal, indicated by lower kappa numbers. AQ addition enhanced lignin removal and preserved cellulose compared to the absence of AQ. The optimal outcome was achieved with 15% NaOH and 0.1 g AQ, balancing lignin removal and cellulose preservation. These findings indicate that anthraquinone can support sustainable pulp production from agricultural waste. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors adawiah adawiah, adawiah Ahmad, Eka Fitriani Darwati, Desi Harneti Putri Huspa Hideo Hayashi Katharina Oginawati Khalijah Awang Kindi Farabi Mayshah Purnamasari Miftahul Munir, Miftahul PUJI LESTARI Tri Mayanti Unang Supratman Yoki Yulizar