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All Journal VALENSI EKSAKTA: Journal of Sciences and Data Analysis JURNAL KIMIA SAINS DAN APLIKASI agriTECH Majalah Ilmiah MOMENTUM BIOMA Jurnal Penelitian Pendidikan IPA (JPPIPA) ALCHEMY Jurnal Penelitian Kimia Jurnal Aplikasi Teknologi Pangan Jurnal Biologi Tropis PROSIDING SEMINAR NASIONAL Jurnal Teknologi Pangan dan Hasil Pertanian Akta Kimia Indonesia BERNAS: Jurnal Pengabdian Kepada Masyarakat Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Jurnal Rekayasa elektrika Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Sri Hartini
Universitas Kristen Satya Wacana
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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Journal : JURNAL KIMIA SAINS DAN APLIKASI

 1 
Antibacterial Activity and Chemical Composition of Red Peacock Flower (Caesalpinia pulcherrima L.) Leaf Essential Oil Novena Risnalani Rintank Constani; Hartati Soetjipto; Sri Hartini
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2556.37 KB) | DOI: 10.14710/jksa.22.6.269-274

Abstract

Peacock flower (Caesalpinia pulcherrima L.) leaves contain essential oils which can be used as an ingredient in cosmetics, perfume, aromatherapy, medicine, and supplements. The study was conducted to obtain essential oils from peacock flower leaves and determine the antibacterial activity against gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) and gram-negative (Escherichia coli and Pseudomonas aeruginosa). Antibacterial activity test was carried out by the agar diffusion method, using paper discs. Measurements were made for the inhibition zone diameter (IZD) that appeared, while the essential oil component was analyzed using GC-MS. The results showed that the peacock flower leaves (C. pulcherrima) had a moderate to strong antibacterial effect at a concentration of 7.5%-20% against gram-positive bacteria (B. subtilis and S. aureus) and gram-negative bacteria (E. coli and P. aeruginosa). Gram-negative E. coli bacteria are relatively more sensitive to peacock flower leaf essential oil compared to other test bacteria. Peacock flower (C. pulcherrima) leaf essential oil is composed of 7 main components namely β-Cubebene 33.87%; Caryophyllene 23.00%; γ-Elemene 13.18%; α-Pinene 10.96%; Cadina-1(10),4-diene 10.20%; Copaene; 7.09%; β-Pinene 1.70%.
Effect of Phosphate Addition and Exposure of Micro Waves on Comparatives Ca/F in Gipsum Waste: Preliminary Study of Hydroxyappatite Synthesis (HAp) from Ceramics Gypsum Industry Waste Dewantoro Dewantoro; Margareta Novian Cahyanti; Sri Hartini
Jurnal Kimia Sains dan Aplikasi Vol 21, No 4 (2018): volume 21 Issue 4 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2981.541 KB) | DOI: 10.14710/jksa.21.4.218-223

Abstract

This study aims to conduct an initial study of hydroxyapatite synthesis from ceramic gypsum waste. The parameters of the synthesis process carried out were variations in the time of the hydrothermal process namely 10, 20, 30, 40 and 50 minutes. The time variation was studied to study the effect of time on the hydroxyapatite character of gypsum waste. The initial synthesis process was conducted by looking at the comparison of Phosphate and Calcium levels in gypsum. In this study the results of the highest Phosphate levels obtained were 0.607% in the 10th  minute, while the largest Calcium levels were obtained in the 30th minute which was 0.171%. The treatment in the 30th minute gave the most optimal difference in effect which was 0.413. FTIR results showed the emergence of hydroxyapatite peaks namely –OH, PO43- and Ca-O, as well as the increase in the intensity of the peak of gypsum powder before treatment and after treatment. While the XRD results strengthened the presence of hydroxyapatite in gypsum with the presence of high peaks at 2θ = 31.08°; 32.14° and 33.45° respectively which indicated the presence of hydroxyapatite. While the main impurities in the synthesized hydroxyapatite are carbonates identified from FTIR results.
Co-Authors Agustinus Hery Waluyo Alfon Pali Alifia Dewi Safira Anik Haryani Asep Mufti Kurniawan Bakti Kresno Wibowo Dewantoro Dewantoro Dewi K.A. Kusumahastuti Dewi KA. Kusumahastuti Dewi Kurnianingsih Arum Kusumahastuti Dwi Novianti Fidela Novitasari Franciska Alvina Gintu, Agung Rimayanto Gloria Virginia Gunawan Dewantoro Hartati Soetjipto Herman Yoseph Sriyana Herman Yoseph Sriyana Imelda Wadu, Imelda Irma Ayuningtyas Jose DM. Yonggulemba Karina Bianca Lewerissa Lucia Devi Danriani Margareta N. Cahyanti Margareta Novian Cahyanti Margareta Novian Cahyanti Mutiara Nur Alfiah November Rianto Aminu Novena Risnalani Rintank Constani Novenda Pramesti Ayuningtyas Pandu Krisnawan Rifka Dwi Natalia Salenussa, Marchelia Welma Sari Purnavita Silvia Andini Silvia Andini Stelly Revina Prabowo Tirza W. Brotosudarmo Yohanes Martono Yosia Adi Susetyo Yulia Frida Nugrahani Yulinda Eka Ayu Rukmawati