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All Journal Tekno - Pedagogi : Jurnal Teknologi Pendidikan Jurnal Natur Indonesia SAINSMAT Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Online Mahasiswa (JOM) Bidang Pertanian Indonesia Chimica Acta Maqasid: Jurnal Studi Hukum Islam BAREKENG: Jurnal Ilmu Matematika dan Terapan Jambura Journal of Mathematics Jambura Journal of Educational Chemistry INSIST (International Series on Interdisciplinary Research) Inovasi Pendidikan: Jurnal Pendidikan JURNAL ILMIAH OBSGIN : Jurnal Ilmiah Ilmu Kebidanan & Kandungan Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Dedikasi Jurnal Ilmiah Kajian Keimigrasian (JIKK) Buguh: Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan dan Profesi Keguruan Jurnal Ilmiah Mahasiswa Perbankan Syariah (JIMPA) International Journal of Electronics and Communications Systems Sagu Chemistry Education Review Jurnal Riset Perkebunan (JRP) Seminar Nasional Pengabdian Kepada Masyarakat JURNAL AGROINDUSTRI HALAL SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam Indonesian Journal of Fundamental Sciences UNESA Journal of Chemical Education Vokatek : Jurnal Pengabdian Masyarakat PPSDP International Journal of Education Literasi Kesehatan Husada: Jurnal Informasi Ilmu Kesehatan Chemedu: Jurnal Ilmiah Pendidikan Kimia JIPI (Jurnal IPA dan Pembelajaran IPA) Sciencestatistics: Journal of Statistics, Probability, and Its Application Abdi Kimia : Jurnal Pengabdian Masyarakat Mammiri: Jurnal Pengabdian Masyarakat Jurnal Kegiatan Pengabdian Mahasiswa (JKPM)
Netti Herawati
Jurusan Kimia FMIPA Universitas Negeri Makassar
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3,3’-di-O-methylellagic acid, an Antioxidant Phenolics Compound from Sonneratia alba Bark Herawati, Netti; Firdaus, Firdaus
Jurnal Natur Indonesia Vol 15, No 1 (2013)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.904 KB) | DOI: 10.31258/jnat.15.1.63-67

Abstract

Free radicals play an important role in some pathogenesis of serious diseases, such as neurodegenerative disorders, cancer,liver cirrhosis, cardiovascular diseases, atherosclerosis, cataracts, diabetes and inflammation. Compounds that can scavengefree radicals have great potential in ameliorating these diseases. It is reported that phenolic compounds in plants possessstrong antioxidant activity and may help to protect cells against the oxidative damage caused by free radicals. Previousstudy revealed that mangrove trees, Sonneratia alba Bark showed strong antioxidant activity. Ethyl acetate fractionexhibited the best antioxidant performance. The antioxidant activity of this fraction was attributed to the presence ofcompounds of different polarities such as phenolics. Furthermore, the phenolic antioxidant of ethyl acetate fraction werepurified and identified with UV, IR, MS, and 2D NMR spectrometry. 3,3’-di-O-methylellagic acid was found in brownamourphous powder. Antioxidant activity was evaluated and compared with L-(+)-ascorbic acid as standard by usingDPPH assay. The compound has strong antioxidant activity than ascorbic acid standar with the value of IC 50 11.35 and17.64 μg/mL, respectively. The high value of antioxidant activity of compound indicate that S. alba is a potential source ofnatural antioxidant agent.
PENAMBAHAN KARAGENAN PADA PEMBUATAN SIRUP DARI BONGGOL NANAS Fajri, Annur; Herawati, Netti; Yusmarini, Yusmarini
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Abstract

The purpose of this research was to determine the addition effect of carrageenan and get the best concentration of carrageenan on the quality of pineapple hump syrup produced. This research used Completely Randomized Design by five treatments and three replications. The treatments were K0 (without addition of carrageenan), K1 (addition of carrageenan 0.50%), K2 (addition of carrageenan 0.75%), K3 (addition of carrageenan 1.00%), and K4 (addition of carrageenan 1.25%). The obtained data were analyzed by Analysis of Variance followed by Duncan's New Multiple Range Test at 5% level. The results of variance showed that the addition of carrageenan at differential concentrations significantly affected the sucrose content, pH, viscosity, colour, taste, and consistency, but did not significantly effect the flavour and overall hedonic ratings pineapple hump syrup produced. The best treatment of the parameters tested and complied SNI 01-3544-2013 was the treatment K3 whith the addition 1.00% carrageenan. The treatment K3 contained sucrose content of 74.29%, pH of 4.95, viscosity 395.39cP, with a description of the colour was yellow, scented pineapple, sweet taste, which had cosistency viscous, and overall rated were liked by the panelists with a score 4.25. Keywords: Syrup, pineapple hump, carrageenan
PENGARUH PENAMBAHAN REBUNG BETUNG DALAM PEMBUATAN NUGGET IKAN PATIN (Pangasius hypopthalamus) Silaban, Mastrina; Herawati, Netti; Zalfiatri, Yelmira
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Abstract

Catfish nuggets is one of the products processed using a cut of catfish relatively small and irregular then be attached to return to the product greater by adding seasoning, filler and materials fastener. This research aims to know the influence of the adding of bamboo shoots betung to quality nugget according SNI-01-6638-2002. Research methods using the complete random design consists of 4 treatments and each treatment was repeated 4 times. Treatment additions bamboo shoots begin from 0%, 10%, 20%, and 30% from 100 grams of heavy materials. The data analyzed by statistic using Anova. Organoleptic analysis with Duncan’s New Multiple Range Test (DNMRT) on 5% level. The result showed that the best treatment was the addition of bamboo shoot treatment 30%. The product has a water content of 30,22%, ash content of 1,17%, the protein content of 12,12%, 3,54% fiber content, with color are golden yellow (3,63) and color in grayish white (4,07), aroma slightly scented fish and slightly scented bamboo shoots (2,93), rather tasteless fish and a little taste of bamboo shoots (2,77), texture a bit chewy (2,73) and overall ratings between like to favorite (4,49). Keywords: catfish, betung bamboo shoots, nugget.
Penambahan Kelopak Bunga Rosella dalam Penambahan Selai Jambu Biji Merah Gultom, Adi Hizkia; Herawati, Netti; Rossi, Evy
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Abstract

The purpose of this study was to obtain the best ratio between red guava pulp with roselle flowerpulp in the making of jam.  This study used Completely Randomized Design (CRD) with four treatments and four replications.  If the results of the study showed a significant difference between treatments, then continued test using DNMRT test at level 5%. The treatment in this research was the ratio of red guava pulp to roselle petal porridge, respectively PT1 (10: 0), PT2 (9: 1), PT3 (8: 2), and PT4 (7: 3). Parameters observed in this jam were moisture content, ash content, pH, total dissolved solids, sucrose content, and sensory assessment. The best ratio in this research is PT4. The resulting moisture content of 25.01%, ash content of 0.25%, contained pH 3.85, total dissolved solids 76.87%, sucrose content 50.07%, Based on descriptive sensory assessment, the result of colored jam (4, 17), flavor (3.17), smell (3.33) has a texture (4.13) and the overall assessment gives a good impression (6,27). Keywords: jam, red guava, rosella flower petals
TOTAL FENOL DAN AKTIVITAS ANTIOKSIDAN DARI SONNERATIA ALBA BARK Herawati, Netti
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 1, No 1 (2012): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.586 KB) | DOI: 10.35580/sainsmat114632012

Abstract

DOWNLOAD PDFThe aim of this research was to examine the total phenolic content and radical scavenging capacity related to antioxidant potential in different fractions of methanolic extract of mangroves trees, Sonneratia alba bark. Total phenolic content was determined by the  Folin-Ciocalteau method.  Antioxidant  potential  has  been determined  as  the  free radical scavenging ability using a stable radical, diphenyl-picryl-hydrazyl (DPPH). Three fractions  of methanol extracts of S. alba were subjected to free radical scavenging activity in order to evaluate their antioxidant activity. The free radical scavenging activity of different fractions obtained from successive fractionation of methanol extracts with organic solvents of different polarities; hexane, chloroform, and ethyl acetate. Total phenolics content of three fraction and crude extract are 17.84 ±0.974, 156.310 ±0.703, 226.89 ±0.605, 249.56  ±0942 (GAE ?g/g) respectively for hexane, chloroform, ethyl acetate, and crude extracts (methanol extract). Antioxidant assay showed that the ethyl acetate and chloroform fractions have the high activity with IC50 10.27 ?g/ml and 27.34 ?g/ml, respectively, while  a weak activity was showed by hexane fraction with 147 ?g/ml. Linear correlation between the total antioxidant capacity of the fractions and the total phenolic contents was observed (r2=0.918). This data indicated that the antioxidant activity  mainly due to phenolic compound contain in those fraction. The results indicate promising S.alba or the utilization as significant source of natural antioxidant. Key words: Sonneratia alba,  total phenolics,  radical scavenging activity, antioxidant,  DPPH  
PENURUNAN ION CA2+ PADA AIR DARI SUMBER MATA AIR CITTA KABUPATEN SOPPENG DENGAN MENGGUNAKAN ZEOLIT ALAM TORAJA (ZEOLIT MORDENIT Herawati, Netti; Alimin, .; Effendi, A. Zulfikar
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 4, No 2 (2015): September
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.121 KB) | DOI: 10.35580/sainsmat4218652015

Abstract

Penelitian ini bertujuan untuk mengetahui karakteristik zeolit alam Toraja dan kemampuannya dalam menurunkan jumlah ion Ca2+ pada air  tanah (sumber mata air Citta kabupaten Soppeng). Penentuan jumlah ion Ca2+ menggunakan fotometri nyala, waktu kontak optimum menggunakan metode batch dengan variasi waktu yaitu 20, 40, 60, 80 dan 100 menit, penentuan kapasitas tukar kation (KTK) dengan variasi konsentrasi ion Ca2+ 120, 150, 180, 210, 240 ppm, dan penurunan jumlah ion Ca2+ menggunakan metode pertukaran ion yang berlangsung dengan model aliran dari atas ke bawah.  Hasil penelitian menunjukkan bahwa jumlah ion Ca2+ dalam air yang berasal dari Citta sebesar 129,53 ppm, waktu kontak optimum tercapai pada menit ke-60, KTK terhadap ion Ca2+  sebesar 13,35 mEq/100 gr zeolit, dan zeolit alam Toraja dapat menurunkan jumlah ion Ca2+ hingga 104,29 ppm pada perbandingan zeolit : air sebesar 1:200.Kata Kunci: ion Ca2+, Zeolit, KTK, Fotometri
PEMANFAATAN BUAH PEDADA DAN BUAH API-API PADA PEMBUATAN FRUIT LEATHER Wulandari, Ayu Sri; Hamzah, Farida Hanum; Herawati, Netti
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Abstract

The purpose of this research was to get the best combination of pedadaporridge and api-api porridge.  The research used a Complete Randomized Design (CRD) with 5 treatments and 3 replications.The treatments were PA1 (Pedadaporridge 90% :api-api porridge10%), PA2 (Pedadaporridge 80% : api-api porridge 20%), PA3 (Pedadaporridge 70% : api-api porridge30%), PA4 (Pedadaporridge 60% : api-api porridge40%) and PA5 (Pedadaporridge 50% : api-api porridge 50%).  The data obtained were analyzed statistically using Anova and DNMRT at 5%.  The research showed that usingpedadaporridgeand api-api porridge water content, ash content, degree of acidity (pH), protein content, fat content, reduction sugar content, crude fiber content and organoleptic test.  The best treatment of fruit leather from this research is PA3 whichwater content 9,19%, ash content 1,05%, degree of acidity (pH) 3,13, protein content 1,87%, fat content 0,28%, reduction sugar content 43,17% and crude fibercontent 4,62%. Rather green colour, a little bit pedadaporridgeand api-api porridgeflavour, sour taste slightly sweet, the texture rather springy and overall assesment of fruit leather was preferred by the panelist. Keywords :Fruit leather, pedadaporridge and api-api porridge.
Sonneratia alba sebagai Sumber Senyawa Antibakteri Potensial Netti Herawati; Noor Jalaluddin; La Daha; Firdaus Zenta
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 2 No 2 - December 2009
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v2i2.978

Abstract

Four different organic solvents, methanol, N- heksana, kloroform, and etil acetate were used to extracted some bioactive compounds from bark of mangroves plant Sonneratia alba (kayu buli) for screening of antibacterial activity against three pathogen bacteria, Staphylococcus aureus,Eschericha coli, and Bacillus subtillis by agar diffusion method. All extracts were able to inhibit the growth of these bacterial significantly in concentration of 5%. Etil acetate ekstract showed highest antibacterial activity.Methanol, chloroform, and etil acetate were effective solvent to extract bioactive compound that have a antibacterial properties from this plant.Keyword: Kayu buli, Sonneratia alba, antibacterial activity
Peningkatan Kemampuan Penyusunan Instrumen Evaluasi Berbasis Hots Bagi Guru (SMAN 05 Tinggi Moncong) Netti Herawati; Muhammad Anwar; Ahmad Fudhai
DEDIKASI Vol 22, No 2 (2020): Jurnal Dedikasi
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/dedikasi.v22i2.16138

Abstract

The implementation of this Community Parthnership Program, PkM aims to improve the understanding of SMAN Negeri 05 Tinggi Moncong teachers about the principles and steps of developing HOTS-based evaluation instruments, the format and components of HOTS-based evaluation instruments, and skilled in preparing HOTSbased evaluation instruments, with a minimum target of 90% of participants of PkM training is able to prepare evaluation instruments well. The implementation of this  activity involved three lecturers from the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Makassar State University, with a background in chemistry and chemistry education. The method applied in the implementation of this PkM is by applying various methods of presentation or lectures, question and answer, discussion, and practice / performance. Then it was continued as an independent assignment outside the classroom for 5 days. All of these activities were carried out online due to the COVID 19 pandemic conditions. This activity succeeded in improving the ability of SMA 05 Tinggi Moncong teachers in developing HOTS-based evaluation instruments
Pengaruh Model Pembelajaran dan Gaya Belajar terhadap Hasil Belajar Peserta Didik Netti Herawati; Ulben Syarifuddin; Halimah Husain
Chemistry Education Review (CER) Volume 5 Nomor 2 Maret 2022
Publisher : Program Pasca Sarjana UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.202 KB) | DOI: 10.26858/cer.v5i2.32725

Abstract

This study is a quasi-experimental research that aims to discover the effect of learning models and learning styles on learning outcomes of grade XI students of MIPA at SMAN 1 Kalukku. The independent variables in this study were the learning models and learning styles of students, and the dependent variable was the learning outcomes on Colloid System subject. The population of the study were students of grade XI MIPA at SMAN 1 Kalukku with the total of 7 classes. The sample of the study was determined by using random sampling technique consisted of 2 classes, namely Class XI MIPA 1 (Class A) and XI MIPA 3 (Class B). The research design employed factorial. The research data was obtained by giving a test of learning outcomes on Colloid System material in the form of a post-test consisted of 25 multiple-choice questions. The data analysis techniques used descriptive and inferential statistical analysis. Hypothesis testing was conducted with the F test (ANOVA) at a significance level of α = 0.05. The results of hypothesis testing with the F test prove that there is an influence of learning models on learning outcomes, there is an influence of learning styles on learning outcomes, and there is an influence of interaction between learning models and learning styles on learning outcomes of grade XI students of MIPA at SMAN 1 Kalukku, studies on Colloid System subject.
Co-Authors ', Rahmayuni ', Syahrial . Alimin . Alimin, . ., faradillah A. Zulfikar Effendi A. Zulfikar Effendi, A. Zulfikar Abd Rahman Abnan Pancasilawati Ahmad Fudhai Ahsan, Sitti Faika Alfi Syahar Arrozani Alimin Alimin Alimin Alimin, Alimin Amanda, Suci Anandita, Nihla Andi Zulfikar Efendy Andriyani Fadmi Aqrim, Muh. Arham, Husnayaini Army Auliah Asriani Asriani Astriani, Sulis Aulia, Nurul Army Azis, Dorrah Aziz, Dorrah Benni Satria Chandra, Rani Danaz Nst, Atika Fadhilah Darma Andayani, Dyah Darnitasari, Devy Deviyanti Deviyanti Dewanri Fattah Dewi Fortuna Ayu Djangi, Muhammad Jasri Edi Setiawan Eri Setiawan Erona, Meisilva Erviani Rahmawati Kurnia Ervissa N Sipayung Eva Anawinta Buangmanalu Faizah Hamzah Fajar Restuhadi Fajri, Annur Fifi Selvianti H Firdaus Zenta Firdaus Zenta Fitri Indriani, R.A Rodia Fitri Kurnianingsih Gultom, Adi Hizkia Gultom, Priscila Manuella GUSTIAWAN, SANDY Hairunnisya, Hairunnisya Hamzah, Farida Hanum Haryanti, Wa Ode Novi Hasan, Sri Wahyuni Hasri Hasri Hasri Hasri Hatidah, Hatidah Ida Ratna Dilla Ikshar Ikshar Ilmiah, Ide Indriansyah, Agung Irfandi, Rizal Iwan Dini Iwan Dini Jasdar Agus Jusniar Jusniar, Jusniar Khairil Afdal Khoirin Nisa Khoirin Nisa La Daha LA DAHA Lethe, Maryella Oktafrilly Makmur Makmur Makmur Makmur Maryono Maryono Mazaya, Maulida Mohammad WIJAYA Mohammad Wijaya M Mufidha, Chusnul Muhaedah Rasyid Muhammad Anwar Muhammad Anwar Muhammad Danail Muhammad Danial Muhammad Jasri Djangi Muhammad Rakib Muhammad Rivai Muhammad Syahrir Muhammad Yunus Muharram Muharram Muharram Muharram, Muharram Mutiara, Syawatul Negara, Satria Putra Jaya Neta Dian Lestari Niluh Asriniasih Niluh Devi Yulyantari Nisai, Khaerun Nita Maghfirah Ilyas Noor Jalaluddin Noor Jalaluddin Nurlita pertiwi, Nurlita Nurmisih, Nurmisih Nusyirwan Nusyirwan Obel, Obel Oktavia, Putri Meyla Palajukan, Yulianti Pangastuti, Dyah Ayunda Pratama Pertiwi, Rina Pince Salempa Prastika, Ike Priyatmo, Yudhi Purwanto, Muhammad Bambang Putri, Kurnia Rachmad Hersi Martinsyah Rahmi Rahmi Rahmi, Maisyarah Ramdani . Ramdani Ramdani Rano, Felisitas Yanti Raswen Efendi Ravika Mutiara Ridwansyah Riftyan, Emma Risdawati, Risdawati Rossi, Evy Ruby, Tiryono Rudi Subiyakto, Rudi Ruslan, Zuhra Adminira Ruslan, Zuhrah Adminira Saidi, Subian Salnus, Subakir Saputri, Gustina SARI, SELVI MUSTIKA Selvianti H, Fifi Septianingrum , Yurike Silaban, Mastrina Sitti Faika Sonyinga, Desma Sonyinga, Desma Sudding, Sudding Sugiarti Sugiarti Sugiarti Sugiarti sulistianingsih, Yuni Sumiati Side Suriati Eka Putri Suryani, Uci Susanti Susanti Sutrisno, Agus Syaputra, Wahyudi Syarifuddin, Ulben Taty Sulastry Taty Sulastry Taupik Hidayat, Taupik Thumo, Selyndion Ayundi Titi, Titi Ulben Syarifuddin UTAMI, MAULIDA Vonny Setiaries Johan Wardani H. Abidin Wijayanti, Lono Wulan, Dwi Wulandari, Ayu Sri Yelmira Zalfiatri Yuliono Yuliono Yunus, Irda Sani Yusmarini Yusmarini Zakaria, La