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Acta Chimica Asiana
Published by Universitas Mataram
ISSN : 2550049x     EISSN : 25500503     DOI : -
Core Subject : Science,
Chemistry
Acta Chimica Asiana (online ISSN 2550-0503, print ISSN 2550-049x) is a peer-reviewed, open access journal that publishes high-quality original research articles as well as review articles in all areas of Chemistry and Chemical Engineering. Significant finding that is insufficient to be presented as comprehensive paper but needs to reach the reader immediately may also be submitted as a short communication. The editors welcome original contributions that have not been published and are not under consideration elsewhere. This journal published by the Indonesian Chemical Society, Chapter Nusa Tenggara and the University of Mataram. All papers published free of charge. Upon request, language assistance may also be provided to ensure valuable works in chemistry meet their readers. Acta Chimica Asiana is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including applied chemistry, and chemical engineering. Subject areas include (but are by no means limited to): 1. Analytical chemistry, including new techniques and instrumentation 2. Biochemistry and medicinal chemistry 3. Inorganic chemistry, including main group, transition metal, and f-block compounds, as well as coordination, organometallic, and solid state chemistry 4. Materials chemistry of hard and soft matter, from the nanoscale upwards 5. Nuclear chemistry and radioactivity 6. Organic chemistry, including synthesis, characterization, and properties of organic compounds, as well as study of organic reactions and their mechanisms 7. Physical chemistry and chemical physics 8. Sustainable, green, and environmental chemistry 9. Theoretical and computational chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 12 Documents
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Search results for , issue "Vol. 8 No. 1 (2025)" : 12 Documents clear
Hydrothermal synthesis of crystalline Aluminium(III)-Tartrate: effect of tartrate type and molar ratio Prananto, Yuniar Ponco; Purwonugroho, Danar; Dzakwan, M. Naufal Tsaqif; Setianingsih, Tutik; Syarifah, Nidatul
Acta Chimica Asiana Vol. 8 No. 1 (2025)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v8i1.244

Abstract

Aluminium(III)-tartrate (Al-T) complex is a compound that commonly used as mordent in textile dyeing. This complex is soluble in hot water; thus, information on the isolation of crystallised Al-T is limited. Isolation of crystallised Al-T is needed to gain a high purity complex for further application in the textile industry. This study aims to synthesize and isolate crystalline complex of Al-T. Hydrothermal method was used to obtain the targeted complex. Effects of tartrate precursor and Al(III):tartrate mol ratio in the synthesis of Al-T complex were also investigated. The synthesis was done at 150 °C for 24 hours in several Al(III):tartrate mol ratios (1:2, 2:1, and 2:3) using two different tartrate precursors, namely L-tartaric acid and KNa-tartrate. The synthesized complexes were identified by infrared spectroscopy and powder-XRD analyses, and then further characterised by UV Vis - DRS, DTA-TGA, and SEM. Experimental data shows that the mol ratio affects the precipitation of the Al-T complex, in which a white crystalline solid was only precipitated out from the 2:1 reaction by both tartrate precursors. Different tartrate precursors used in the synthesis may alter the crystallization and result in an Al-T complex with slightly different thermal decomposition profile, UV-Vis DRS spectra profile, and different yield due to the different nature of the tartrate precursor. This finding is expected to support the possibility of Al-T mass production as mordent in textile dyeing
Biomass waste as a photoprotective agent in the formulation of sunscreen preparation Vioniken, Elzandra Imola; Ratnasari, Devi
Acta Chimica Asiana Vol. 8 No. 1 (2025)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v8i1.246

Abstract

UVA and UVB radiation from sunlight may lead to erythema and skin cancer. Those risks can be reduced by using photoprotective agents. Sunscreen is a photoprotective agent that successfully protects the skin from ultraviolet radiation. However, the active ingredients containing synthetic chemicals can hurt the skin. This review provides knowledge regarding using lignin compounds obtained from biomass waste as photoprotective agents that have been investigated for performance. The method of study applied is a literature review of original research conducted within the last ten years. Data were searched using the keywords biomass waste, photoprotective, and sunscreen on the Pubmed and Google Scholar websites. The results showed that lignin can be found in varying levels of biomass waste, such as banana stems, coconut shells, corn stalks, rice straws, and others. Delignification of lignin from biomass can be accomplished using basic solvents, acidic solvents, organosolvents, and Deep Eutectic Solvents (DES). The delignification procedure using DES is considered more environmentally friendly and less toxic. The higher the lignin concentration in the cream, the greater the SPF value. This is because lignin contains phenolic, ketone, and other chromophore functional groups capable of absorbing UV radiation. Furthermore, converting lignin molecules into nanoparticles and modifying their chemical structure may enhance the SPF value of lignin-containing creams. The addition of phenolic hydroxyl auxochrome groups and catechol units to the lignin molecule was found to increase the SPF value of lignin. It may be concluded that lignin can be utilized as a photoprotective agent, and biomass waste can be transformed into high-value cosmetic products.

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