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Journal : Science and Technology Indonesia

Quercetin Solid Lipid Microparticle Stability and Deposition in Rat Lungs: A Study of Surfactant Effect Hariyadi, Dewi Melani; Sairiyah, Siti Nasikatus; Rahman, Fakhrinnisa Wildani; Rijal, Muhammad Agus Syamsur; Rosita, Noorma; Rahmadi, Mahardian
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.682-696

Abstract

This study aims to determine the effect of surfactant concentration on Quercetin SLM as a potential carrier of respiratory diseases, especially ones resulting from oxidative stress injury. Quercetin is a natural antioxidant with high activity. SLM was formed with 5% compritol 888 ATO as a lipid and different concentrations of poloxamer 188 as a surfactant. SLM was produced by a combination of emulsification and sonication involving freeze drying. SLM is characterized by organolepsis, morphology, yield, particle size, drug loading, and entrapment efficiency. The antioxidant activity of quercetin SLMs was tested using the ABTS method. SLMs are characterized as having round and smooth morphology, high yield (F1 88.53%; F2 91.44%; F3 92.87%); particle size (F1 1.81 um; F2 1.90 um; F3 1.94 um); high drug loading (F1 15.96%; F2 13.74%; F3 13.19%); and high entrapment efficiency (F1 96.53%; F2 87.94%; F3 87.48%). Increasing surfactant concentration did not produce a significant difference between formulas. Quercetin SLM showed high antioxidant activity (Quercetin 94.43%; F1 94.35%; F2 94.36%; F3 94.37%). SLM was stable at storage temperatures between 25°C and 40°C. The effect of surfactant can be seen on particle size, drug loading, and entrapment efficiency at 40°C. Results of in vivo deposition study indicated that all SLM formulas were able to deliver quercetin to the lungs. Increasing the concentration of surfactant in Quercetin SLMs made no difference to the lung deposition as confirmed by observations conducted at 1 hour and 4 hours. Quercetin SLM has the potential for lung delivery by inhalation.
Assessment of Antioxidant Activity, Total Phenolic and Flavonoid Contents of Albizia saponaria L. Bark Extract Lukman, Lukman; Rosita, Noorma; Widyowati, Retno
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.494-501

Abstract

Langir (Albizia saponaria L.), belonging to the family of the Fabaceae, is a medicinal endemic plant of South Sulawesi, Indonesia. The Albizia genus shows antioxidant, antibacterial, anthelmintic, antidandruff, and anti-inflammatory properties. In this study, total phenolic (TP) and total flavonoid (TF) extracts from the bark of A. saponaria were screened for robust antioxidant activity in order to identify potential sources of new compounds for use in pharmaceutical formulations in the future. TP and TF of the 96% ethanol extract and fractions (hexane, ethyl acetate, butanol, and water) were calculated by the Folin–Ciocalteu and aluminum chloride procedures, respectively. Furthermore, the antioxidant activity was determined by DPPH free radical scavenging method and ABTS assay. Generally, both extract and fractions showed significant radical scavenging activities. Ethyl acetate fraction exhibited more potent radical scavenging activity in the DPPH method (IC50 35.27 ± 2.85 µg/mL) and ABTS assay (IC50 60.04 ± 0.98 µg/mL), followed by 96% ethanol extract, and hexane, butanol, and water fractions. Furthermore, the highest TP (4.50 ± 0.01 mg/g GAE) and TF (3.55 ± 0.04 mg/g QE) were obtained from ethyl acetate fraction. There was a strong correlation between antioxidant activity with TP (DPPH, R2 = 0.6436; ABTS, R2 = 0.7676) and TF content (DPPH, R2 = 0.5533; ABTS, R2 = 0.5961). The extract’s antioxidant properties may be attributable to its higher phenolic and flavonoid content. In summary, the phenolic and flavonoid content of the ethyl acetate fraction indicates its potential utility as a source of antioxidants.
Stability and Antiaging Effectiveness Studies of Astaxanthin-Loaded Nanostructured Lipid Carriers Using a Combination of Cetyl Palmitate and Soybean Oil Zhihrotulwida, Dzakiya; Soeratri, Widji; Erawati, Tristiana; Rosita, Noorma
Science and Technology Indonesia Vol. 10 No. 2 (2025): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.2.473-481

Abstract

Astaxanthin is a potent antioxidant belonging to carotenoid compounds that is mainly produced from green microalgae Haematococcus pluvialis. Astaxanthin is beneficial for skin health as antiaging agent, but has limitations in its delivery through the skin. Astaxanthin could be formulated in nanostructured lipid carriers to improve its efficacy. The purpose of this study was to evaluate the stability and antiaging effectiveness of astaxanthin-loaded nanostructured lipid carriers (ASX-NLCs) with cetyl palmitate and soybean oil as lipid combinations at several ratios of 100:0, 90:10, 80:20, and 70:30. ASX-NLCs were synthesized using a high-shear homogenization technique. ASX-NLCs were characterized and stability evaluated after storage for 90 days. The antiaging effectiveness of ASX-NLCs was evaluated by in vitro release test using dialysis bag for 8 hours, as well as collagen density and fibroblast count evaluation on UV-induced skin aging mice for 28 days. After storage, all ASX-NLCs did not change significantly in organoleptic, pH, and particle size. However, other parameters including polydispersity index, viscosity, and entrapment efficiency experienced significant changes in some formulas. The release test showed that F4 (70:30) gave the highest cumulative release and was significantly different from F1 (100:0). The collagen density of the groups treated with ASX-NLC F3 (80:20) and F4 (70:30) increased significantly compared to the UVB control group, while the fibroblast count did not differ significantly in all groups. Overall, ASX-NLCs containing cetyl palmitate and soybean oil at ratios of 80:20 and 70:30 could improve the antiaging effect of astaxanthin which might be influenced by its better stability and release.
Co-Authors Abhimata Paramanandana Agustin Agustin Agustin Agustin Albertus Aditya Setiawan Alya Nur Amilia Andang Miatmoko Angkasa Megistra Ulvan Ardhani Dwi Lestari1 Athiyyah, Wafa'ul Bambang Tri Purwanto Cahyono, Definta Anisa Tamara Dewi Isadiartuti Dewi Isadiartuti Dewi Melani Hariyadi Dian Ratna Rianti Dicky Pratama Dini Retnowati Djoko Agus Purwanto Dwi Setiawan Dwi Setyawan Dyah Rahmasari Esti Hendradi Etik Wahyuningsih Farida Ifadotunnikmah Firdausiah Fania Dwi Putri Putri Fransisca Dita Mayangsari Frida Magdalena Hadi Poerwono Hamdan, Siti Hartini Hanafi Tanojo Herra Studiawan I Gusti Ayu Adhi Aryapatni I Nyoman Wijaya Juni Ekowati Kholis Amalia Nofianti Mahardian Rahmadi Marcellino Rudyanto Maria Lucia Ardhani Dwi Lestari Melanny Ika Sulistyowaty Mochammad Yuwono Mohammad Agus Sjamsur Rijal Muhammad Agus Syamsur Rijal Muhammad Faris Adrianto Nurhidayah Sarifuddin Paramita, Diajeng Putri Pradita Fiqlyanur Isna Primadana Prayoga, Adistiar Purwitasari, Neny Qurrotu A'yunin Rahmadhanniar, Erwinda Rahman, Fakhrinnisa Wildani Retno Sari Retno Widyowati Rohmawati Hidayah Rufaidah Azzahrah Ryan Afandi Sairiyah, Siti Nasikatus Sarifuddin, Nurhidayah Sayyidati Aqilah Siti Hartini Hamdan Soerarti, Widji Sugiyartono1 Suko Hardjono Suzana Tekla Kalalo Tiara Jeni Rosadi Tristiana Erawati Tristiana Erawati Tutiek Purwanti Tutiek Purwati Virnanda Syafira Hartatiningrum Widji Soerarti Widji Soeratri Widji Soeratri Winanda Rizki Febrianti Wiwik Handayani Yusuf, Helmy Zhihrotulwida, Dzakiya