Claim Missing Document
Check
Articles

Perbedaan aktivitas antimikroba dari ekstrak etanol dan etil asetat daun kopi (Coffea canephora) Hartati Hartati; Suriati Eka Putri
Seminar Nasional LP2M UNM Prosiding Edisi 6
Publisher : Seminar Nasional LP2M UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (917.974 KB)

Abstract

Coffee leaves have been widely used traditionally as herbal medicines by the community. Coffee leaves contain active compounds that are efficacious for treating various types of diseases. Some research results show that coffee has antibacterial activity because of the presence of various active compounds such as flavonoids, phenols, alkaloids and saponins. The use of coffee leaves is still low and research is rare compared to seeds. So it is very important to study coffee leaves more deeply. Extraction of the content of the active compound in the coffee leaf besides being influenced by the extract process or method is also strongly influenced by the type of solvent used. In this study 2 different types of solvents will be used, namely 70% ethanol as polar solvents and ethyl acetate solvents as non-polar solvents. Polar solvents will retract / attract polar compounds while non- polar solvents will dissolve non-polar compounds. In this study, the maceration method will be used in the extraction process using 70% ethanol and ethyl acetate. The results showed that coffee ethanol extract had high antibacterial activity and antifungal activity compared to coffee ethyl acetate extract.
Analysis of the Chemical Content of Virgin Coconut Oil (VCO) with Raw Material of Coconut From Walennae Village, Sabbangparu District, Sengkang Regency Side, Sumiati; Putri, Suriati Eka; Musa, Muhammad Iskandar
Indonesian Journal of Fundamental Sciences Vol 9, No 1 (2023)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijfs.v9i1.46010

Abstract

Coconut (Cocos nucifera L.) is a plant that provides many benefits to the rural economy. The part of coconut that has many benefits is the flesh of the fruit which can be taken from the coconut milk to make pure coconut oil which is commonly called Virgin Coconut Oil (VCO). In this study, the manufacture of VCO with the basic ingredients of old coconut from Walennae Village, Sabbangparu District, Sengkang Regency was carried out. This study aims to determine the characteristics of VCO in the form of peroxide number, Free Fatty Acid (FFA) number, and air content. The results showed the physical properties of the VCO produced, including the physical appearance of oil with a clear color, a distinctive aroma of oil, and no rancid smell. The results of the analysis of the chemical properties of the resulting VCO have a peroxidevalue of 1.5835 mg ek/kg; FFA number is 0.08% and water content is 0.18%.
Pengaruh Aktivasi Terhadap Morfologi Karbon Aktif Dari Kulit Kacang Tanah Side, Sumiati; Pratiwi, Diana Eka; Ilyas, Nita Magfirah; Rahim, Mega Putri Aulia; Putri, Suriati Eka
Indonesian Journal of Fundamental Sciences Vol 9, No 2 (2023)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijfs.v9i2.54397

Abstract

Abstrak. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh proses aktivasi terhadap karakteristik karbon aktif dari kulit kacang tanah. Penelitian ini terdiri dari tahapan preparasi sampel, tahapan karbonisasi karbon, aktivasi karbon, dan karakterisasi menggunkaan Scanning Electron Microscope (SEM). Aktivator yang digunakan pada penelitian ini adalah H3PO4 dan ZnCl2. Hasil yang diperoleh menunjukkan adanya perbedaan morfologi permukaan karbon sebelum dan setelah aktivasi. Morfologi permukaan karbon dari kulit kacang tanah menunjukkan adanya pori setelah dilakukan proses aktivasi. Jumlah pori yang banyak dihasilkan dengan menggunakan aktivator H3PO4 sedangkan pori dengan penampakan pori yang lebih kecil dihasilkan dengan menggunakan aktivator ZnCl2
PKM Pembuatan Virgin Coconut Oil (VCO) dengan Metode Fermentasi Pada Kelompok Pembuat Minyak Kelapa Kelurahan Walennae Kecamatan Sabbangparu Side, Sumiati; Putri, Suriati Eka; Pratiwi, Diana Eka; Musa, Muhammad Iskandar
PENGABDI PENGABDI: VOL. 4, NO.1 (2023)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/pengabdi.v4i1.46360

Abstract

Abstrak. Virgin Coconut Oil (VCO) merupakan minyak kelapa murni yang dibuat tanpa melalui tahapan pemanasan. VCO memiliki kandungan asam lemak rantai sedang atau medium chain fatty acids (MCFA) yang mudah terurai di dalam tubuh. Selain itu, VCO juga mempunyai kandungan antioksidan sehingga dapat dikonsumsi langsung untuk kesehatan masyarakat. Kegiatan PKM ini bertujuan untuk memberikan pelatihan pembuatan VCO dengan metode fermentasi menggunakan ragi roti pada Kelompok Pembuat Minyak Kelapa Kelurahan Walennae Kecamatan Sabbangparu Kabupaten Wajo, Sulawesi Selatan. Berdasarkan hasil observasi dan wawancara anggota kelompok (mitra) belum mengetahui mengenai produk VCO. Dengan demikian, kegiatan ini dimulai dengan sosialisasi pengenalan VCO yang dilanjutkan dengan diskusi dan praktek pembuatan VCO dengan metode fermentasi. Hasil pengamatan di lapangan menunjukkan mitra sangat antusias mengikuti kegiatan ini karena merupakan pengetahuan baru dan dapat membantu meningkatkan pendapatan mitra karena harga jual VCO yang dikenal cukup mahal. Dengan pengetahuan mengenai cara pembuatan VCO dengan metode fermentasi, maka mitra mempunyai alternatif produk yang dapat diproduksi dan dipasarkan selain minyak kelapa. Kata Kunci: Minyak kelapa, fermentasi, VCO
Pemanfaatan Ekstrak Daun Eceng Gondok (Eichornia crassipes) sebagai Penghambat Korosi pada Baja Karbon Rendah dalam Larutan HCl 1% Riska, Nur; Putri, Suriati Eka; Sulfikar, Sulfikar
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 25, No 1 (2024): CHEMICA
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemica.v25i1.27697

Abstract

ABSTRAKPenelitian ini merupakan penelitian eksperimen yang bertujuan untuk mengetahui pengaruh penambahan penghambat korosi ekstrak daun eceng gondok (Eichornia crassipes) terhadap laju korosi baja karbon rendah dalam media HCl 1% dan efisiensi inhibisinya. Ekstrak daun eceng gondok ditambahkan ke dalam larutan korosif HCl 1% untuk memperlambat proses oksidasi Fe dengan variasi konsentrasi 0 ppm, 500 ppm, 1000 ppm, 1500 ppm dan 2000 ppm dan direndam selama 2 hari, 4 hari, 6 hari 8 hari dan 10 hari. Ekstrak eceng gondok pekat yang didapatkan sebanyak 10,2577 gram. Uji fitokimia yang dilakukan menghasilkan ekstrak eceng gondok mengandung flavonoid dan alkaloid. Penentuan laju korosi dengan metode weight loss menghasilkan laju korosi paling tinggi dari perendaman hari kedua, keempat, keenam, kedelapan, dan kesepuluh terjadi pada konsentrasi 0 ppm yakni tanpa penambahan inhibitor yaitu 134,169164 mmpy, 136,34689 mmpy, 160,868438 mmpy 217,945218 mmpy, dan 227,77951 mmpy. Sedangkan yang paling rendah laju korosinya terjadi pada konsentrasi 2000 ppm yakni 9,34828694 mmpy, 9,29517167 mmpy, 7,11744574 mmpy, 7,06433047 mmpy, 5,64084132 mmpy. Sedangkan Efisiensi inhibisi yang paling rendah dari waktu perendaman kedua, keempat, keenam, kedelapan, dan kesepuluh terjadi pada konsentrasi 0 ppm yaitu 0%. Sedangkan yang paling tinggi terjadi pada konsentrasi 2000 ppm yakni 93,0324624%, 93,1827035%, 95,5756108%, 96,7586669%, 97,5235519%. Hasil penelitian menunjukkan bahwa semakin besar konsentrasi ekstrak maka laju korosi semakin kecil dan efisiensi inhibisi semakin besar. Analisis FTIR menunjukkan gugus fungsi yang terkandung dalam ekstrak eceng gondok adalah O-H pada bilangan gelombang 3414,00 cm-1, gugus C-H alifatik pada bilangan gelombang 2854,72 cm-1, gugus C=O pada bilangan gelombang 1737,86 cm-1, gugus C=C pada bilangan gelombang 1546,91 cm-1 dan gugus -CO- pada bilangan gelombang 1163,08 cm-1. Sedangkan setelah perendaman pada konsentrasi 2000 ppm gugus fungsi yang terlihat adalah gugus O-H 3446,75 cm-1, gugus C-H alifatik 2927,94 cm-1, gugus C=O 1645,28 cm-1, gugus C=C 1541,12 cm-1 dan gugus -CO- 1026,06 cm-1. Analisis SEM yang dilakukan pada baja tanpa inhibitor terlihat morfologi menjadi lebih kasar dan terdapat banyak celah. Sedangkan dengan adanya penambahan inhibitor 2000 ppm morfologi tidak terlalu kasar dan sedikit celah.Kata kunci: Laju Korosi, Baja Karbon, HCl 1%, Inhibitor, Ekstrak Daun Eceng Gondok ABSTRACTThis research is an experimental research aimed to determine the effect of adding hyacinth leaf extract as inhibitor (Eichornia crassipes) the corrosion rate of low carbon steel in 1% HCl solution and its inhibition efficiency. Hyacinth leaf extract was added to 1% HCl corrosive solution to slow Fe oxidation process with various concentrations of 0 ppm, 500 ppm, 1000 ppm, 1500 ppm and 2000 ppm and soaked for 2, 4, 6, 8 and 10 days. . The concentrated water hyacinth extract obtained was 10.2577 grams. Phytochemical tests carried out flavonoids and alkaloids. Determination of the corrosion rate using the weight loss method resulted in the highest corrosion rate from immersion on the second, fourth, sixth, eighth, and tenth days occurr at a concentration of 0 ppm, without addition of inhibitors, is 134.169164 mmpy, 136.34689 mmpy, 160.868438 mmpy 217.945218 mmpy, and 227.77951 mmpy. While the lowest corrosion rate occurr at a concentration of 2000 ppm, is 9.34828694 mmpy, 9.29517167 mmpy, 7.11744574 mmpy, 7.06433047 mmpy, 5.64084132 mmpy. Meanwhile, the lowest inhibition efficiency of the second, fourth, sixth, eighth, and tenth immersion time occurr at a concentration of 0 ppm, is 0%. While the highest concentration occurr at 2000 ppm, is 93.0324624%, 93.1827035%, 95.5756108%, 96.7586669%, 97.5235519%. The results showed that the greater the concentration of the extract, the lower the corrosion rate and the greater the inhibition efficiency. FTIR analysis showed that the functional groups contained were O-H at a wave number of 3414.00 cm-1, aliphatic CH group at a wave number of 2854.72 cm-1, a C=O group at a wave number of 1737.86 cm-1, the C=C group at the wave number of 1546.91 cm-1 and the -CO- group at the wave number 1163.08 cm-1. Meanwhile, after immersion at a concentration of 2000 ppm the functional groups seen were OH group 3446.75 cm-1, aliphatic CH group 2927.94 cm-1, C=O group 1645.28 cm-1, C=C group 1541.12 cm -1 and -CO-10 group 1026.06 cm-1. SEM analysis performed on steel without inhibitors shows that the morphology becomes coarser and there are many gaps. Meanwhile, addition of 2000 ppm inhibitor, the morphology is not rough and there are few gaps.Keyword: Corrosion Rate, Carbon Steel, 1% HCl, Inhibitor, Hyacinth Leaf Extract
Fotodegradasi Zat Warna Methanyl Yellow Menggunakan Komposit zeolit-PbO Zakinah, Ilmiati; Side, Sumiati; Putri, Suriati Eka; Pratiwi, Diana Eka; Majid, Ahmad Fudhail
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 25, No 1 (2024): CHEMICA
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemica.v25i1.62729

Abstract

ABSTRAKFotodegradasi merupakan proses penguraian senyawa organik menjadi senyawa yang lebih sederhana dengan bantuan energi foton yang berasal dari sinar UV. Proses fotodegradasi memerlukan fotokatalis yang umumnya merupakan bahan semikonduktor seperti PbO. Pada penelitian ini digunakan zeolit-PbO untuk menjadi katalis dalam mendegradasi zat warna. Penelitian ini adalah penelitian eksperimen yang bertujuan untuk mengetahui kondisi optimum degradasi zat warna methanyl yellow menggunakan komposit zeolit-PbO. Fotodegradasi zat warna methanyl yellow dilakukan dengan variasi pH dan massa komposit. Pengukuran hasil degradasi zat warna methanyl yellow menggunakan Spektrofotometer UV-Vis pada panjang gelombang 440 nm. Komposit zeolit-PbO mampu mendegradasi zat warna methanyl yellow dengan pH 5, massa optimum 400 mg dengan waktu 150 menit dengan presentase degradasi sebesar 90,17%. Hasil yang diperoleh menunjukkan bahwa komposit zeolit-PbO dapat digunakan dalam proses fotodegradasi zat warna methanyl yellow.Kata Kunci: Komposit zeolit-PbO, Methanyl yellow, FotodegradasiABSTRACTPhotodegradation is the process of breaking down organic compounds into simpler compounds with the help of photon energy originating from UV light. The photodegradation process requires a photocatalyst which is generally a semiconductor material such as PbO. In this research, zeolite-PbO was used to act as a catalyst to degrade dyes. This research is an experimental study which aims to determine the optimum conditions for the degradation of methanyl yellow dye using a zeolite-PbO composite. Photodegradation of methanyl yellow dye was carried out by varying the pH and mass of the composite. Measurement of the degradation results of methanyl yellow dye using a UV-Vis Spectrophotometer at a wavelength of 440 nm. The zeolite-PbO composite was able to degrade methanyl yellow dye with a pH of 5, an optimum mass of 400 mg in 150 minutes with a degradation percentage of 90.17%. The results obtained indicate that the zeolite-PbO composite can be used in the photodegradation process of methanyl yellow dye.Keywords: Zeolite-PbO composite, Methanyl yellow, Photodegradation
Adsorption Kinetics of Cd(II) From Aqueous Solution Using Surfactant Modified Activated Carbon-Sodium Lauryl Sulphate (SMAC-SLS) Side, Sumiati; Putri, Suriati Eka; Perdana, Rini; Rahman, Abd.
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 13, No 2 (2024): September
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat132661382024

Abstract

The purpose of this study was to determine the adsorption kinetic model of Cd(II) from aqueous solution using Surfactant Modified Activated Carbon-Sodium Lauryl Sulphate (SMAC-SLS). This study began by varying pH, contact time, and adsorbate concentration. The concentration of Cd(II) was measured using a spectrophotometric method. The results of the analysis showed that the optimum pH occurred at pH 5 with an adsorption percentage of 84.58±1.44% and the optimum contact time at 100 minutes with an adsorption percentage of 88.75±1.5%. Furthermore, in the variation of adsorbate concentration, the adsorption percentage decreased with increasing adsorbate concentration. The adsorption kinetics followed a pseudo second order with an R2 value of 0.9945 with an adsorption capacity of 8.89 mg/g. Thus, the use of SMAC-SLS as a future adsorbent for Cd(II) is highly recommended.
PELATIHAN PENYUSUNAN REFERENSI ARTIKEL ILMIAH DENGAN MENGGUNAKAN APLIKASI MENDELEY UNTUK MAHASISWA JURUSAN KIMIA FMIPA UNM Magfirah Ilyas, Nita; Fadly, Dewiyanti; Side, Sumiati; Putri, Suriati Eka
ABDI KIMIA: Jurnal Pengabdian Masyarakat Vol 2 No 1 (2024): Jurnal Edisi Desember
Publisher : Jurusan Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/abdi.v2i1.4583

Abstract

Penyusunan referensi dalam artikel ilmiah sangat diperlukan dalam rangka meningkatkan kualitas sumber dari suatu artikel ilmiah yang dibuat oleh mahasiswa. Kegiatan ini masih kurang diperhatikan dan menjadi fokus dari mahasiswa karena dianggap tidak penting dalam kerangka artikel ilmiah. Hal ini terlihat dari masih terbatasnya wawasan dan pengetahuan mahasiswa dalam mencari dan menyusun sumber informasi dengan baik pada artikel ilmiah. Dengan demikian diperlukan kegiatan pelatihan penggunaan aplikasi mendeley kepada mahasiswa. Pelatihan ini bertujuan untuk memberikan wawasan dan pengetahuan mengenai penyusunan referensi artikel ilmiah dengan menggunakan aplikasi Mendeley. Mitra kegiatan ini adalah Jurusan Kimia FMIPA UNM yang terletak di Kecamatan Tamalate, Kota Makassar, Provinsi Sulawesi Selatan. Adapun materi yang disampaikan mengenai tata cara membuat daftar pustaka menggunakan aplikasi Mendeley. Kegiatan pengabdian ini dilaksanakan melalui tiga tahapan. Tahap pertama yaitu tahap perencanaan, tahap kedua yaitu implementasi dan tahap ketiga yaitu evaluasi. Dengan penggunaan aplikasi Mendeley, diharapkan terjadi peningkatan kemampuan mahasiswa dalam menyusun referensi artikel ilmiah yang berdampak pada meningkatnya kualitas karya ilmiah mahasiswa. Kata Kunci: Artikel Ilmiah; Aplikasi Mendeley; Referensi
Review of the Role Calcium Silicate Ceramics for Bone Tissue Repair Eka Putri, Suriati; Perdana, Rini
Hayyan Journal Vol. 1 No. 3 (2024): October
Publisher : Education and Talent Development Center of Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/hayyan.v1i3.2335

Abstract

Bioinorganic science and the utilization of metal ions in the synthesis and design of new materials have received considerable attention in relation to their use as new biomaterials. One of the important roles of metal ions is to control the characteristics of the resulting biomaterials, namely their biological and chemical properties. To date, main group metal ions and transition metals have been used in the fabrication process of silicate and phosphate-based ceramics. Metal ions are used to modify their chemical composition and structure to overcome the shortcomings of silicate and phosphate-based ceramics. Calcium silicate (CaSiO3, CS) ceramics are biocompatible and bioactive. In this review, we consider the apatite-forming ability and biological properties of ion-doped CS ceramics such as bredigite, akermanite, monticellite, diopside, merwinite, hardystonite, baghdadite and sphene. Overall, according to the studies conducted on CS bioceramics, all of them may be good candidates for bone tissue regeneration
Pre-Treatment of Empty Oil Palm Bunches (EOPB) Using Autoclave with Variations in H2SO4 Solvent Concentration to Increase Cellulose Content Ganing, Melani; Suleman, Annisa Inayah; Putri, Suriati Eka; Diana, Sri; Syafaatullah, Achmad Qodim
Journal of Chemical Process Engineering Vol. 9 No. 2 (2024): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i2.986

Abstract

Empty Oil Palm Bunches (EOPB) are waste products from palm oil mills, the waste is produced in large quantities, but most palm oil mills have not utilized this waste product adequately. There are several contents of EOPB, namely cellulose, hemicellulose and lignin, each of which has economic value so that it can be utilized further. One significant opportunity is that cellulose in EOPB will be converted into glucose or bioethanol. Bioethanol is one of the options in supporting the availability of renewable energy resources. The bioethanol production process consists of initial pretreatment, hydrolysis, fermentation and purification. The delignification process of Empty Oil Palm Bunches (EOPB) using physical and chemical pretreatment can break down lignin and hemicellulose so that cellulose can be converted into glucose in bioethanol production. The pretreatment procedure with H2SO4 solvent is used to increase cellulose content. The purpose of this study was to determine how different concentrations of H2SO4 affect the amount of cellulose in the EOPB pretreatment process. Additional studies on bioethanol can be done with this cellulose content. There is an experimental component in this study, namely through direct observation and testing of materials containing different concentrations of H2SO4, namely 3%, 5%, and 7%, data were collected through laboratory experiments. The cellulose content for 0% H2SO4 concentration was 16.15%, 3% H2SO4 was 30.00%, 5% H2SO4 was 36.35%, and 7% H2SO4 was 41.09% indicating that the H2SO4 solvent can increase the cellulose content.
Co-Authors A. Irma Suryani Abd Rahman Abd Rahman Abd. Rahman Abd. Rahman Abd. Rahman Abd. Rahman Abdul Karim Abdul Rahman Achmad Fudhail Ahmad Fudhail  Majid Ahyar Ahmad Alimin Alimin Alimin Alimin Alimin Andi Erwin Eka Putra Andi Indra Wulan Sari Ramadani Angriyani Ahmad Anita Anita Anwar, Fadil Arfah, Rugaiyah Andi Astri Wiyani GM Astriana Dewi Aulia Rahma Aulia, Mega Putri Bunyamin, Andi Bulqiah Nur daya, Nurhidaya Dewi Rahmadani Dewi Rahmadani Dewiyanti Fadly Diana Eka Pratiwi Diana Eka Pratiwi Diana Eka Pratiwi Diana Eka Pratiwi Dipo Ade Putra Iskandar Djangi, Muh. Jasri Elfira Jumrah Ganing, Melani Hapzi Ali Hardin hardin hardin Harningsih Karim Hartati Hartati Hartati, Hartati Hasnah Natsir Hasri Hasri Hasri Hasri Hasri Hasri Hasri Hasri Umas Ilyas, Nita Magfirah Ilyas, Nita Maghfirah Irfandi, Rizal Isna Sejati Sam Isna Sejati Syam Juintan Pratiwi Jusniar Magfirah Ilyas, Nita Marlina Ummas Genisa Maryono Maryono Maryono, Maryono Maryono Mazaya, Maulida Miftahul Jannah Mohammad wijaya Mohammad Wijaya Mohammad WIJAYA Muhammad Danial Muhammad Ilham Wardhana Haeruddin Muhammad Iskandar Musa Muhammad Iskandar Musa Muhammad Syahrir Muhammad Taufiq Munawwarah Munawwarah Munawwarah, Munawwarah Mutahharah Hasyim, Mutahharah Negara, Satria Putra Jaya Netti Herawati Nilasari, Nilasari Nita Magfirah Ilyas Nita Magfirah Ilyas Nur Afni Nur Riska Nurfadilah Adam Nursafitri Nursafitri Paulina Taba Pince Salempa Rachmat Triandi Tjahjanto Rahim, Mega Putri Aulia Ramadani, Ananda Ramdani Ramdani Ramdani Ramdani Ria, Tiara Anugrah Riksfardini Annisa ERMAWAR Rini Perdana Rismawati Rismawati Rosmala Rauf Sarlan, Sarlan Satria Putra Jaya SITI HALIMAH LAREKENG, SITI HALIMAH Sitti Faika Sri Diana Sudding Suleman, Annisa Inayah Sumiati Side Sumiati Side Sumiati Side Sumiati Side Syafaatullah, Achmad Qodim Syamsidah Wijaya, Khalida Yunanda FR Yunanda Yunanda Zakinah, Ilmiati Zubair, Sakinah