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All Journal Walisongo Journal of Chemistry
Azhar, Istighfarin Meilidya
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Chemistry

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Effect of Surfactants on Total Phenol Content from Sonication Extraction of Moringa (Moringa oleifera Lamk) Leaves in Vegetable Oil Azhar, Istighfarin Meilidya; Mahmudah, Rif'atul; Fasya, Ahmad Ghanaim
Walisongo Journal of Chemistry Vol 7, No 1 (2024): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v7i1.20545

Abstract

This research aimed to determine the effect of variations in surfactant addition and sonication extraction time on the total phenolic content of Moringa leaves in vegetable oils, namely Virgin Coconut Oil (VCO) and Extra Virgin Olive Oil (EVOO). Moringa leaf extract in VCO and EVOO at varying volume additions of tween 80 of 0 mL; 0.1 mL; 0.2 mL; 0.3 mL; and 0.4 mL, as well as variations in extraction time, namely 0, 10, 20, and 30 minutes. The solution mixture was sonicated at room temperature with a frequency of 42 kHz. The extraction results were tested for total phenol content using the total phenol measurement method (Folin-Ciocalteu), whose absorption was measured using a UV-Vis Spectrophotometer. The best variation was the addition of tween 80 volume of 0.4 mL and extraction time of 30 minutes; sonicated Moringa leaf extract in VCO was 39.28 ± 1.75 mg GAE/g and EVOO was 57.80 ± 2.89 mg GAE/g. Furthermore, the typical functional groups of phenolic compounds in the best Moringa leaf herbal oil extract in VCO and EVOO were identified using an FTIR spectrophotometer.
Effect of Surfactants on Total Phenol Content from Sonication Extraction of Moringa (Moringa oleifera Lamk) Leaves in Vegetable Oil Azhar, Istighfarin Meilidya; Mahmudah, Rif'atul; Fasya, Ahmad Ghanaim
Walisongo Journal of Chemistry Vol. 7 No. 1 (2024): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v7i1.20545

Abstract

This research aimed to determine the effect of variations in surfactant addition and sonication extraction time on the total phenolic content of Moringa leaves in vegetable oils, namely Virgin Coconut Oil (VCO) and Extra Virgin Olive Oil (EVOO). Moringa leaf extract in VCO and EVOO at varying volume additions of tween 80 of 0 mL; 0.1 mL; 0.2 mL; 0.3 mL; and 0.4 mL, as well as variations in extraction time, namely 0, 10, 20, and 30 minutes. The solution mixture was sonicated at room temperature with a frequency of 42 kHz. The extraction results were tested for total phenol content using the total phenol measurement method (Folin-Ciocalteu), whose absorption was measured using a UV-Vis Spectrophotometer. The best variation was the addition of tween 80 volume of 0.4 mL and extraction time of 30 minutes; sonicated Moringa leaf extract in VCO was 39.28 ± 1.75 mg GAE/g and EVOO was 57.80 ± 2.89 mg GAE/g. Furthermore, the typical functional groups of phenolic compounds in the best Moringa leaf herbal oil extract in VCO and EVOO were identified using an FTIR spectrophotometer.
UTILIZATION OF BAGASSE ASH FOR THE PREPARATION OF SILICA AEROGEL/MgO COMPOSITES THROUGH AMBIENT-PRESSURE DRYING Azhar, Istighfarin Meilidya; Nazriati, Nazriati; Kusumaningrum, Irma Kartika
Walisongo Journal of Chemistry Vol. 8 No. 2 (2025): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v8i2.27564

Abstract

This study presents the preparation of silica aerogel/MgO composites using bagasse ash as a silica source and MgCl₂·6H₂O as the MgO precursor. Sodium silicate was extracted from bagasse ash and converted into silicic acid through ion-exchange treatment. Silica aerogel formation was achieved through gelation, followed by surface modification using TMCS and HMDS. Magnesium oxide was incorporated via co-precipitation with MgCl₂·6H₂O and subsequently stabilized through calcination. The composites were characterized using FTIR, XRD, and BET–BJH analyses. XRD results revealed a hybrid amorphous–crystalline structure, with silica predominantly in the amorphous phase and MgO in the crystalline phase. BET analysis showed a pore volume of 0.50 cm³/g and a specific surface area of 121.99 m²/g, while the pore-size distribution confirmed its mesoporous nature. FTIR spectra indicated the presence of functional groups corresponding to Si–O–Si, Si–C, C–H, and Mg–O, confirming the successful integration of MgO into the silica aerogel framework. These findings demonstrate the successful preparation of silica aerogel/MgO composites from bagasse ash under ambient-pressure drying conditions.
Co-Authors A. Ghanaim Fasya Kusumaningrum, Irma Kartika Mahmudah, RIf'atul Nazriati Nazriati dkk.