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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Teknosains: Media Informasi Sains dan Teknologi Jurnal Agro KOVALEN: Jurnal Riset Kimia Indonesia Chimica Acta INDONESIAN JOURNAL OF ESSENTIAL OIL Al-Kimia Chimica et Natura Acta Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Gizi dan Kesehatan
Ummi Zahra, Ummi
Jurusan Kimia, Fakultas Sains Dan Teknologi, Universitas Islam Negeri Alauddin Makassar, Makassar, Indonesia, 90222
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Nursing Physics Public Health

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MINYAK ATSIRI DAUN ZINGIBERACEAE SEBAGAI ANTIOKSIDAN DAN ANTIGLIKASI Irmanida Batubara; Ummi Zahra; Latifah K Darusman; Akhirudin Maddu
INDONESIAN JOURNAL OF ESSENTIAL OIL Vol 1, No 1 (2016)
Publisher : Institut Atsiri Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.507 KB) | DOI: 10.21776/ub.ijeo.2016.001.01.05

Abstract

Daun keluarga Zingiberaceae memiliki aroma khas yang mirip dengan rimpangnya. Oleh karena itu, penelitian ini bertujuan untuk mengisolasi minyak atsiri daun beberapa spesies dari keluarga Zingiberaceae dan menentukan aktivitas minyak atsiri tersebut sebagai antioksidan dan antiglikasi yang berhubungan dengan anti-penuaan. Daun dari 8 spesies yaitu Alpinia galanga, Boesenbergia pandaratum, Curcuma aeruginosa, Curcuma domestica, Curcuma xanthorrhiza, Curcuma zedoaria, Ellettaria cardamomum, dan Zingiber officinale diisolasi minyak atsirinya menggunakan teknik distilasi uap. Minyak yang diperoleh ditentukan kemampuannya sebagai antioksidan menggunakan metode ABTS (2,2’-azino-bis-3-ethylbenzothiazolin-6-sulfonic acid) menggunakan spektrofotometer visual serta kemampuan antiaging melalui aktivitas antiglikasi mengunakan flourimetri. Rendemen minyak dihasilkan mulai dari 0.04 hingga 3.15%. Kapasitas antioksidan tertinggi dengan metode ABTS ditemukan pada minyak atsiri daun Curcuma aeruginosa sebesar 5.10g ekuivalen asam askorbat/ 100 g minyak sedangkan minyak dengan aktivitas antiglikasi terbesar ditemukan pada minyak daun Z. officinale dengan konsentrasi penghambatan 50%, IC50 sebesar 207.95mg/L.  Senyawa kimia pada minyak atsiri daun Z. officinale ditentukan menggunakan metode Kromatografi Gas- Spektrometri Massa dan ditemukan kariofilena sebagai komponen dominannya. Kariofilena mampu bertindak sebagai antiglikasi dengan konsentrasi penghambatan 50% sebesar 113.8 µM. Minyak atsiri dari daun Z officinale berpotensi dikembangkan sebagai antiaging.
Isolasi dan Identifikasi Senyawa Metabolit Sekunder Ekstrak n-Heksan dari Umbi Lobak (Raphanus Sativus Lamk) Ummi Zahra; Muharram Muharram; Asriani Ilyas Asriani Ilyas
Al-Kimia Vol 1 No 1 (2013): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.813 KB) | DOI: 10.24252/al-kimia.v1i1.1570

Abstract

Isolation and identification of secondary metabolite compound in extract of n-Hexane in Umbi Lobak (Raphanus sativus Lamk) have been carried out. The purpose of this research is to know secondary metabolite compound which is contained in Umbi Lobak (Raphanus sativus Lamk) which obtained from Gowa. The compound was obtained by isolation process that consists of several steps including extraction, fractination, purification, and identification. Extraction was carried out using maceration with n- hexane. The identification has done by phytochemistry test, melting point, solubility, TLC, and IR spectroscopy. The result of research found out that the obtained compound was the steroid compound, with melt point 133-133,5 oC and had positive  reaction toward Lieberman Burchad reagents, where the Lieberman Burchad reagent resulting is green which perfectly solved in n-hexane, bit solved in methanol, and could not be solved in aceton. TLC analysis showed a stain in three scales different solvent and the result of elucidation structure in IR spectrophotometer showed that compound which get is β sitosterol.
Uji Antiseptik Ekstrak Kulit Jeruk Nipis (Citrus aurantifolia) terhadap Bakteri Bacillus cereus dan Escherichia coli Mirnawati Mirnawati; Nur Mu'min; Ummi Zahra
Al-Kimia Vol 9 No 2 (2021): DESEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i2.23261

Abstract

Indonesia is one of the countries with the fourth largest natural wealth in the world. The magnitude of the natural potential provides a great opportunity for scientists to develop it as a useful product for society. One of the medicinal plants that can be used is lime (C. aurantifolia). The purpose of this study was to determine the inhibition of lime peel extract (Citrus aurantifolia) against Bacillus cereus, Escherichia coli and mold bacteria using the coloni counter method. This research includes the extraction process of the maceration method then the extract obtained is tested for bacterial analysis using a colony counter. Based on the results of the research conducted, it can be concluded that lime peel extract (C. aurantifolia) has the ability to inhibit the growth of B. cereus and E.coli bacteria, respectively 0 APM/g and <3.0 APM/g. This is because there are bioactive compounds such as -pinene and D-limonene in lime peel extract (C. aurantifolia).
Adsorbsi Metanil Kuning Menggunakan Hidrogel Pati Bonggol Pisang Ambon (Musa paradisiaca var. Ambon) Ummi Zahra; Samsinar Samsinar; Sitti Chadijah; Arfiani Nur
Chimica et Natura Acta Vol 9, No 1 (2021)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v9.n1.34378

Abstract

Limbah industri masih terus menjadi permasalahan, terkait pemanfaatan dan pengolahannya. Salah satu limbah yang sulit untuk diuraikan adalah zat pewarna metanl kuning, Zat tersebut berdampak menganggu ekosistem lingkungan. Penelitian ini bertujuan untuk melakukan asorbsi pada zat pewarna metanil kuning menggunakan hydrogel yang disintesis dari pati bonggol pisang ambon (M. paradisiaca var. Ambon). Metode yang dilakukan pada penelitian ini adalah, ekstraksi pati pada bonggol pisang, sintesis hydrogel, karakterisasi hydrogel menggunakan FTIR dan monitoring adsorbsi zat pewarna metanil kuning menggunakan spektrofotometer  UV-Vis. Hasil penelitian menunjukkan beberpa gugus fungsi antara lain O-H, C-H, N-H dan C-O dan penambahan gugus fungsi N=N and S=O groups pada hidrogel yang telah diadsorbsikan dengan metanil kuning. Adapun penyerapan hydrogel pada konsentrsi 200 ppm menghasikan nilai degradasi sebesar 30,62%. 
MODIFIKASI STRUKTUR TRIASILGLISERIDA DARI MINYAK KOPRA MENGGUNAKAN VARIASI WAKTU OKSIDASI KMnO4 UNTUK PRODUKSI BIODIESEL Dyah Wulandhari Sulthan; Aisyah Aisyah; Suriani Suriani; Arfiani Nur; Ummi Zahra
CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Vol 9 No 2 (2021): Cakra Kimia (Indonesian E-Journal of Applied Chemistry)
Publisher : Graduate Program of Applied Chemistry, Udayana University, Bali-INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK: Biodiesel merupakan salah satu bahan bakar alternatif yang ramah lingkungan sebagai pengganti solar. Namun, biodiesel memiliki kelemahan yaitu titik awan yang tinggi sehingga biodiesel akan merusak mesin diesel jika digunakan di daerah yang beriklim dingin. Titik awan yang tinggi disebabkan karena adanya asam lemak tidak jenuh dari minyak (triasilgliserida). Penelitian ini bertujuan untuk memproduksi biodiesel dari bahan baku minyak kopra dengan memodifikasi struktur triasilgliseridanya. Metode yang dilakukan yaitu melakukan modifikasi terlebih dahulu pada triasilgliserida dengan reaksi oksidasi KMnO4 3% serta katalis H2SO4 6N dengan variasi waktu 30, 45, 60, 75 dan 90 menit dan dilanjutkan proses transesterifikasi untuk produksi biodiesel menggunakan pelarut metanol. Hasil nilai konversi biodiesel yang didapatkan pada masing-masing variasi yaitu 6,61 %, 13,16%, 50,36%, 39,30% dan 7,98%. Hal tersebut menunjukkan bahwa biodiesel dari hasil modifikasi triasilgliserida lebih sedikit rendamennya. Biodiesel yang diperoleh diidentifikasi dengan menggunakan instrumen IR dan GC-MS. Komponen- komponen hasil spektrum IR yang dihasilkan dari kelima variasi menunjukkan data- data spektrum yang hampir sama dengan GC-MS yang menunjukkan adanya komponen mayor diduga yaitu metil ester seperti metil palmitat, metil stearat, metil laurat dan metil kaprat. Selain itu, juga diduga adanya senyawa epoksi yaitu cis-9- metil, 10-epoksioktadekanoat sebagai komponen minor. ABSTRACT: Biodiesel is one of the alternative fuels that are environmentally friendly as a substitute for diesel fuel. However, biodiesel has the disadvantage of a high cloud point so that biodiesel will damage the diesel engine if used in areas with cold climates. High cloud points due to the unsaturated fatty acids from oils (triacylgliciride). This study aims to produce biodiesel from raw material copra oil by modifying the structure of triacylgliciride. The method to do that is to make modifications prior to the oxidation reaction of triacylglycerides with KMnO4 3% and H2SO4 6N as a catalyst with a variation of 30, 45, 60, 75 and 90 minutes and proceed transesterification process to produce biodiesel using methanol. Results biodiesel conversion value was obtained in each variation is 6.61%, 13.16%, 50.36%, 39.30% and 7.98%. It was show that biodiesel from modified triacylgliciride less yield. Biodiesel was obtained using instruments identified by IR and GC-MS. The components of the IR spectrum were result generated from the fifth variation of the data showed a spectrum similar to GC-MS which showed major components, namely allegedly methyl esters such as methyl palmitate, methyl stearate, methyl laurate and methyl caprate. In addition, also alleged the existence of an epoxy compound that is cis-9- methyl, 10-epoxyoktadecanoate as a minor component.
Ekstraksi dan Uji Stabilitas Zat Warna Alami dari Biji Buah Pinang (Areca catechu L.) sebagai Bahan Pengganti Pewarna Sintetik pada Produk Minuman: Extraction and Stability Test of Natural Dyes from Areca catechu L. as a Substitute for Synthetic Dyes in Beverage Products St Chadijah; Sari Ningsih; Ummi Zahra; Syarifah Rabiatul Adawiah; Iin Novianty
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 2 (2021): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i2.15541

Abstract

Natural dyes are an alternative dye that is not toxic, environmentally, friendly and easily degraded. Therefore, optimizing the use of body coloring sources is carried out. One of the natural dyes released is tannin from betel nuts. Tannins are polar pigments. This study aims to determine the results of natural dyes in betel nuts and find out the durability produced and known organoleptic results. Dyestuff extraction from betel nuts was carried out with 96% ethanol. Testing the color stability of betel nut seedlings was carried out on the effect of pH, temperature and storage time with the method UV-Vis Spectrophotometer. Then the application of betel nut dyes on beverage products was carried out. The results showed that betel fruit produced tannin dyes in brownish red color with an average tannin content of 28.002 mg/L. Dyes stabilized at pH of 6 by heating at 400C and storage for 2 days. The results of organoleptic tests showed that the extract of areca nut powder can be used as a natural dye in beverage products with a level of color, smell and flavor that emits at a concentration of 0.005 g/mL of dyes. Keywords: Extraction, tannin, areca nuts, color stability, organoleptic
STUDY OF SECONDARY METABOLITES OF Jatropha gossypifolia LEAF EXTRACT AND ITS ACTIVITY AGAINST Propionibacterium acne Nunung Kurniati; Maswati Baharuddin; Ummi Zahra
Teknosains Vol 16 No 3 (2022): September-Desember
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v16i3.29721

Abstract

Jarak merah merupakaan salah satu tanaman endemik Indonesia. Kandungan metabolit sekunder yang ada pada tanaman ini berpotensi untuk dijadikan sebagai antibakteri. Penelitian ini bertujuan untuk mengetahui potensi metabolit sekunder ekstrak jarak merah dalam menghambat pertumbuhan bakteri Propinium acne. Metode pengujian meliputi skrining fitokimia dan pengujian antibakteri dilakukan dengan metode sumuran. Hasil penelitian menunjukkan bahwa ekstrak daun jarak merah memiliki metabolit sekunder yaitu flavonoid, alkaloid dan steroid. Ekstrak etil asetat dan etanol daun jarak merah mampu menghambat pertumbuhan bakteri Propionibacterium acne dengan zona hambat berturut-turut sebesar 14,43 mm dan 9,37 mm.
Efektivitas ekstrak N-Heksana daun tembelekan (Lantana camara L.) dan mimba (Azadirachta indica A. Juss) terhadap mortalitas keong mas (Pomacea canaliculate L.) Mirna Mirna; Maswati Baharuddin; Ummi Zahra; Sappewali Sappewali
Jurnal AGRO Vol 10, No 1 (2023)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/24080

Abstract

Golden snail is one of the potential pests for agricultural failure in Indonesia. One of the methods used to control golden snail pests is the use of botanical pesticides. The purpose of this study was to determine the potential of L. Camara and A. Indica extracts as botanical pesticides to control the golden snail. The stages of research activities consisted of : extractionusing the maceration method; phytochemical screening; application of N-Hexane extract from tembelekan leaves and neem leaves; Observation of the golden snail mortality. The experimental method used was a completely randomized design (CRD) with nine treatments and three replications. Observations were made every 6 hours for 48 hours. Analysis of mortality data using ANOVA and DMRT follow-up test. The results showed that the secondary metabolite compounds from tembelekan and neem extracts that act as botanical pesticides are flavonoids, alkaloids, and triterpenoids. The most effective treatment in controlling the golden snail was the E3 treatment with a combination of 15% tembelekan n-hexane extract and 15% neem n-hexane extract achieving a 100% mortality percentage at 36 hours. Based on the analysis, it is known that the treatment of tembelekan and neem leaf extracts had a significant effect on golden snail mortality with Fcount (3.22) > Ftable (2.51).ABSTRAK Keong mas merupakan salah satu hama potensial terhadap kegagalan pertanian di Indonesia. Salah satu cara yang digunakan untuk mengendalikan hama keong mas yaitu menggunakan pestisida nabati. Tujuan penelitian ini adalah untuk mengetahui potensi ekstrak L. Camara dan A. Indica sebagai pestisida nabati untuk mengendalikan keong mas. Tahapan kegiatan penelitian terdiri dari: esktraksi dengan metode maserasi; skrining fitokimia; pengaplikasian ekstrak N-Heksana daun tembelekan dan daun mimba; pengamatan mortalitas keong mas. Metode eksperimen dengan rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap (RAL) dengan sembilan perlakuan dan tiga ulangan. Pengamatan dilakukan setiap 6 jam selama 48 jam. Analisis data mortalitas dengan menggunakan ANOVA dan uji lanjut DMRT. Hasil penelitian menunjukkan bahwa golongan senyawa metabolit sekunder dari ekstrak tembelekan dan mimba yang berperan sebagai pestisida nabati yaitu flavonoid, alkaloid, dan triterpenoid. Perlakuan yang paling efektif dalam mengendalikan keong mas yaitu pada perlakuan E3 dengan kombinasi ekstrak n-heksana tembelekan 15% dan ekstrak n-heksana mimba 15%. Berdasarkan analisisnya, diketahui bahwa perlakuan ekstrak daun tembelekan dan mimba tersebut memiliki pengaruh nyata terhadap mortalitas keong mas dengan Fhitung (3,22)>Ftabel (2,51).
Esterification Reaction of Glycerol to The Derivatives Catalyzed by Amberlyst 36 Aisyah, Aisyah; Rezeki, Rezeki; Firnanelty, Firnanelty; Abubakar, A. Nur Fitriani; Zahra, Ummi; Patunrengi, Iswadi Ibrahim; Nur, Arfiani
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 14, No 1: June 2021
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70561/ica.v14i1.12837

Abstract

Several studies reported the use of acid catalysts of esterification of glycerol to acetin derivatives and amberlysts are no exception. However, among these strong sulfuric acid catalysts, amberlyst 36 is still rarely used and hence challenging to investigate. This study aimed to determine the yield and the selectivity of the esterification reaction of glycerol into acetine derivatives using a 5% of solid catalyst amberlyst 36 at a temperature of 90°C in a reflux system. The conversion value resulting from the reaction was 80.74%, with a selectivity value of 6.8% for triacetin. FTIR and GC-MS data support the monoacetin and triacetin structures. The findings indicate that the simple method and easily obtained catalyst can produce a high yield of acetin derivatives. This method is still possibly optimized to perform maximum yield with high selectivity.
Antibacterial and Antioxidant Activities of Cutibacterium acnes on Jatropha gossypifolia leaves and Pommetia pinata Bark Zahra, Ummi; Nur, Arfiani; Kurniati, Nunung; Yusril, Yusril; Baharuddin, Maswati
Chimica et Natura Acta Vol 13, No 1 (2025)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v13.n1.54007

Abstract

Cutibacterium acnes is a bacterium that can cause inflammation of the skin tissue and lead to acne. Inhibitory activity treatment can be carried out using natural compounds unique to Indonesia as a tropical country, namely Pometia pinnata stem bark and red Jatropha gossypifolia leaves. Pometia pinnata stem bark and red Jatropha gossypifolia leaves are known to have the potential for antibacterial activity. This study aims to combine the two plants as anti-bacterial agents against Cutibacterium acnes and as antioxidants. The method used in this study was maceration, employing ethanol and ethyl acetate solvents for antibacterial and antioxidant activity tests, specifically paper disc diffusion and DPPH assays. The results showed that J. gossypifolia and Pometia pinnata leaf extracts contain flavonoids, steroids, terpenoids, alkaloids, and tannins. The antibacterial activity of a mixture of ethanol extracts from J. gossypifolia and Pometia pinnata leaves against Cutibacterium acnes bacteria was strong, categorized at a concentration of 25%. Additionally, there was no significant difference in the antioxidant capacity between the mixture of ethanol and ethyl acetate extracts. The antioxidant capacity value was approximately 53% AEAC at a concentration of 500 ppm.
Co-Authors Abubakar, A. Nur Fitriani Aisyah Aisyah Aisyah Aisyah Akhirudin Maddu Arfiani Nur Asriani Ilyas Asriani Ilyas Dyah Wulandhari Sulthan Firnanelty, Firnanelty Halisa, Halisa Iin Novianty Irmanida Batubara Kurniati, Nunung Latifah K Darusman Maswati Baharuddin Maswati Baharuddin Maswati Baharuddin Mirna Mirna Mirnawati Mirnawati Muharram Muharram Nathasa Weisdania Sihite Novianty, Iin Nunung Kurniati Nur Mu'min Nurmayanti, Sarah Patunrengi, Iswadi Ibrahim Rahmiani Gani Ramadani, Kurnia Rezeki, Rezeki Rotua, Manuntun Samsinar Samsinar Sappewali Sappewali Sari Ningsih Sitti Chadijah Sitti Chadijah St Chadijah Suriani Suriani Susyani, Susyani Syarifah Rabiatul Adawiah Yusril Yusril