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Journal : Makara Journal of Science

Biospeciation of Cr(III) Nutritional Supplements in Biological Fluids Safitri, Anna; Levina, Aviva; Lay, Peter A.
Makara Journal of Science Vol. 21, No. 2
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Abstract

Metal ion speciation in various biological systems has been extensively studied to elucidate its biological role and the toxicity of the element of interest. In the present study, chromium speciation was performed by reacting Cr(III) nutritional supplements [Cr(pic)3], where pic = 2-pyridinecarboxylato(-), and a Cr(III) propionate complex, [Cr3O(OCOEt)6(OH2)3])+, in calf serum. Cr(III) complexes in serum were fractionated using size-exclusion chromatography, and the Cr(III) concentrations in each fraction were determined using graphite furnace atomic absorption spectroscopy. The results showed that Cr(III) bound to both high-and low-molecular weight serum fractions. While Cr(III) was mainly bound toalbumin or transferrin, unknown low-molecular-weight serum fractions were also important in Cr binding. The Cr(III) distribution in serum fractions was found to be time-dependent.
Modeling of Aqueous Root Extract Compounds of Ruellia tuberosa L. for Alpha-Glucosidase Inhibition Through in Silico Study Safitri, Anna; Sari, Dewi Ratih Tirto; Fatchiyah, Fatchiyah; Roosdiana, Anna
Makara Journal of Science Vol. 25, No. 1
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This study aims to analyze the inhibitory activities of aqueous root extract compounds of Ruellia tuberosa L. toward alpha-glucosidase protein by computational docking analysis. Three major compounds contained in the extracts (i.e., betaine, daidzein, and hispidulin) were selected as ligands; quercetin and acarbose were used as the reference. Computational docking analysis was performed using the HEX 8.0.0 program and visualized using the Discovery Studio Visualizer v19.1.0.18287 (2019 version) on the basis of the scoring functions. The interactions between ligands and alpha-glucosidase protein showed different binding patterns. The types of bonds involved in the interaction between the enzyme and these ligands were hydrogen and hydrophobic bonds. Energy generated from docking of betaine, daidzein, hispidulin, quercetin, and acarbose to alpha-glucosidase protein were −167.6, −249.5, −251.2, −241.5, and −322.1 cal/mol, respectively. Acarbose had the lowest energy, indicating that it has the strongest interaction with alpha-glucosidase, followed by hispidulin, daidzein, quercetin, and betaine. Amino acid residues that interacted with the ligands were His717, Met363, Arg608, Pro361, Phe362, Leu865, Glu869, Arg594, andAsp356. The current research shows that R. tuberosa L. aqueous root extracts have the potential to be used as an inhibitor for the alpha-glucosidase protein and as an antidiabetic agent. Nonetheless, further studies are needed to support this modeling study.
Antimicrobial Activity of Ferulic Acid in Indonesian Purple Rice through Toll-like Receptor Signaling Wijayanti, Ernanin Dyah; Safitri, Anna; Siswanto, Dian; Triprisila, Lidwina Faraline; Fatchiyah, Fatchiyah
Makara Journal of Science Vol. 25, No. 4
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Abstract

Purple rice is a potential source of ferulic acid, which has antimicrobial properties. However, the inhibitory mechanism of ferulic acid on the growth of bacteria, particularly Salmonella and Listeria, has not been elucidated. This study aimed to determine the bioactivity of ferulic acid from purple rice as an antimicrobial agent against Salmonella typhimurium and Listeria monocytogenes using in vitro and in silico analyses. The antimicrobial activity of a purple rice ferulic acid extract was tested using the agar well diffusion method. Its effect on bacterial cells was observed using scanning electron microscopy. Ferulic acid was confirmed to have antimicrobial properties using in silico software to attenuate the binding of bacterial virulence factors (lipoproteins, lipopolysaccharides, and flagellins) to Toll-like receptors (TLRs) and to prevent interactions with peptidoglycans. The purple rice ferulic acid extract inhibited bacterial growth. The inhibitory effects included induction of a biofilm and shrinkage of S. Typhimurium, as well as osmotic lysis of L. monocytogenes. This activity was supported by the ability of ferulic acid to inhibit the binding of bacterial virulence factors with TLRs and block bacterial peptidoglycans. These findings indicate that the purple rice ferulic acid extract acts as antimicrobial, both directly to bacterial cells and indirectly through TLRs. We conclude that ferulic acid from Indonesian purple rice has a biological function as an antimicrobial agent.
Co-microencapsulation of Ruellia tuberosa L. and Cosmos caudatus K. Extracts for Pharmaceutical Applications Annisa, Choirin; Prasetyawan, Sasangka; Safitri, Anna
Makara Journal of Science Vol. 26, No. 2
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Abstract

This study aims to co-microencapsulate the Ruellia tuberosa L. and Cosmos caudatus K. extracts, with chitosan–sodium tripolyphosphate (Na-TPP) as coating material. α-Amylase inhibition and antioxidant assays were conducted to determine the potential of microcapsules used as antidiabetic agents. The microcapsules were manufactured under the influences of pH, Na-TPP concentration, and stirring time. The optimum microencapsulation conditions were selected based on the highest encapsulation efficiency. The optimum microencapsulation conditions were a pH of 4, Na-TPP concentration of 0.15% (w/v), and stirring time of 60 min. The microcapsules exhibited an IC50 (inhibitory concentration) value of 223.64 ± 0.81 µg/mL and an α-amylase inhibition and antioxidant activity of 104.05 ± 0.88 µg/mL. The test for the release of bioactive compounds from microcapsules was conducted in HCl pH 1.2 and phosphate buffer pH 7.4 for 30–120 min. Results showed that 5.99% and 58.96% of bioactive compounds were released at pH 1.2 and 7.4, respectively, in 120 min. The Fourier transform infrared spectra showed the P=O functional group vibrations from Na-TPP at 1,213.71 cm−1 and C–N stretching vibrations from chitosan at 1,155.23 cm−1. Characterization with scanning electron microscopy and particle size analysis indicated that the microcapsules were spherical and had a mean diameter of 132.08 µm. The current study demonstrated that co-microencapsulation is a promising multifaceted approach for the enhancement of the pharmaceutical applications of plant extract combinations
Microencapsulation of Cosmos caudatus Kunth Extract using Sodium Alginate and In Vitro Antioxidant Activity Test Fadlila, Safina Samara Nur; Puspita, Oktavia Eka; Ningsih, Zubaidah; Safitri, Anna
Makara Journal of Science Vol. 28, No. 2
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Abstract

This study aims to encapsulate Cosmos caudatus K. leaf extract in sodium alginate crosslinked with calcium chloride (CaCl2) as coating materials through freeze-drying. Antioxidant assays were performed to evaluate the applicability of the microcapsules as antidiabetic medicines. Their characteristics, antioxidant activity, and encapsulation efficiency (EE) were also examined. Results indicated that the concentration of sodium alginate and pH influenced the manufacturing process of the microcapsules. The highest EE was obtained at pH 6 and alginate concentration of 2% (w/v). The IC50 for the antioxidant activity of the microcapsules was 139.96 ± 1.094 μg/mL. Scanning electron microscopy confirmed the presence of irregular and spherical structures on the surface. Fourier transform infrared spectra showed new absorption bands at 1593.10 and 1427.59 cm−1, demexistening the existence of stretching vibrations of COO−. Absorption at 1024.14 cm−1 demonstrated C–C and C–O bond stretching vibrations in the sodium alginate–CaCl2 crosslinks. Fourier transform infrared spectrum analyses indicated that sodium alginate and CaCl2 formed chemical bonds, enabling microencapsulation. This study discovered that microencapsulation is a highly prospective and adaptable strategy for enhancing the medicinal use of plant extract.
Molecular Interaction of Purple Rice Ferulic Acid and Skin Aging-Related Enzymes Wijayanti, Ernanin Dyah; Fatchiyah, Fatchiyah; Safitri, Anna; Siswanto, Dian
Makara Journal of Science Vol. 29, No. 1
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Abstract

Purple rice is rich in ferulic acid, a phenolic acid abundant in rice. Ferulic acid (FA) has long been recognized for its anti-oxidant properties, which are linked to its skin anti-aging activity owing to its ability to scavenge free radicals and pro-tect cells from damage. Skin anti-aging activity could be assessed by inhibiting skin aging enzymes. However, there was limited information on the mechanism of FA inhibition of these enzymes. This study focused on the molecular interac-tion between purple rice FA and collagenase or tyrosinase, both with and without their substrates. The interaction be-tween FA (CID 445858), collagenase (2Y6I), tyrosinase (5M8M), collagenase substrate (CID 5486160), and tyrosinase substrate (CID 6057) was docked using Hex 8.0.0 Cuda with the default settings. Discovery Studio 2020 and LigPlot software were used to visualize the docking results. Ascorbic acid (CID 54670067) and kojic acid (CID 3840) were used as positive controls for collagenase and tyrosinase, respectively. Molecular docking revealed that FA formed electro-static, hydrogen, and hydrophobic bonds with all aging enzymes, substrates, and enzyme–substrate complexes. FA could bind to both free enzymes and free substrates, consequently attenuating enzyme–substrate bonding, and preventing the substrate from binding appropriately in its normal position. Molecular dynamics simulations demonstrated that FA formed a stable bond with tyrosinase, similar to kojic acid, although the bond with collagenase was less stable. However, the pattern of each parameter during the simulation was comparable with that of ascorbic acid. The current study indicated that the FA from purple rice had the potential to act as an inhibitor of skin aging en-zymes and could be developed as a skin anti-aging candidate
Co-Authors Ainun Sajidah Ajeng Erika Prihastuti Haskito Akhmad Sabarudin Aldila Noviatri Almas Dwi Khairana Almayda, Nabila Anna Roosdiana Anna Roosdiana Anna Roosdiana Anna Roosdiana Anna Roosdiana Annisa, Choirin Arie Srihardyastutie Arief, Miftahudin Ary Mustofa Ahmad Asri Nurul Huda Aulanni'am Aulanni'am Aulanni`am Aulanni`am Avander Alexander Nuban Aviva Levina Aviva Levina Budi Kamulyan Cairns, James Robert Ketudat Chanif Mahdi Chanif Mahdi Citra Sari Devi Ramadani Dewi Ratih Tirto Sari Dian Siswanto Dwi Putri Woro Pamungkas Dyah Kinasih Wuragil Dzakiyyah Salmaa Eko Suyanto Ellya Indahyanti Ellysia Hitdatania Ernanin Dyah Wijayanti Eva Nur Laili Octaviana Fadlila, Safina Samara Nur Fairus Suryani Munir fatchiyah . Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatchiyah Fatimah, Wahyu Dwi Febrianti, Wiwin Dwi Firza Rajasa Gunawan Gatrananda, Sayyid Izzudin Gunawan, Firza Rajasa Handayu Untari Haskito, Ajeng Erika Prihastuti Hilman Nurmahdi Irfan Mustafa Irfan Mustafa James Robert Ketudat Cairns Lay, Peter A. Layta Dinira Levina, Aviva Lidwina Faraline Triprisila Lidwina Faraline Triprisila Masruri Masruri Muh Fikry Baharuddin Muhammad Fikri Nur Muhrimah, Siti Nariswari, Bintari nasrullah wilutono Nia Kurnianingsih Nia Kurniawan Ningsih, Zubaidah Novi Kurnianingsih Noviatri, Aldila Oktarini, Dwi Oktavia Eka Puspita, Oktavia Eka Peter A Lay Peter A Lay Purnamasari, Citra Putri, Radwa Fathin H Rahmaniah, Galuh Rensani Taloin Rista Nikmatu Rohmah Saidun Fiddaroini Saniyawati, Fang You Dwi Ayu Shalu Sari, Dewi Ratih Tirto Sasangka Prasetyawan Sasangka Prasetyawan Sasangka Prasetyawan Savira Ayu Damayanti Senge, Yeyen Susana Siti Mariyah Ulfa Sovia Rosalin Sri Wardhani Suci Amaliyah Sunarni Sunarni Sutrisno Sutrisno Sutrisno, Sutrisno Tri Wahyu Nugroho Ulfa Andayani Ulfa Andayani Untari, Handayu Wibi Riawan Yenny Kornitasari Yoravika Dwiwibangga Yufani, Rofika An Zahara, Izaz Aqeiluz