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All Journal Natural Science: Journal of Science and Technology KOVALEN: Jurnal Riset Kimia KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Jurnal ABDINUS : Jurnal Pengabdian Nusantara

Prismawiryanti Prismawiryanti

Jurusan Kimia FMIPA Universitas Tadulako

Author-ID : 347670

Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering

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Retensi Ekstrak Karoten pada Olahan Mie Wortel (Daucus carrota L.): Retention of Carotene Extract on Carrot (Daucus carrota L.) Noodles Putri Wahyuni; Ni Ketut Sumarni; Prismawiryanti; Jaya Hardi
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 2 (2020): 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.2020.v6.i2.12794

Carotene extract from carrots (Daucus carrota L.) can improve the quality of processed noodles. Determining of carotene retention in processed carrot noodles during the storage period that has been done aims to know the reaction kinetics and shelf life of the noodles. Carrot noodles were stored for 8 weeks at room temperature and analyzed its carotene content by using a UV-Vis spectrophotometer every 7 days. The result showed that the retention of carrot noodles during storage of 0, 1, 2, 3, 4, 5, 6, 7, and 8 weeks was 53.64%, 53.19%, 52.49%, 51.68%, 51.07%, 46.30%, 45.96, 45.88, and 44.93%, respectively. The retention kinetics of carrot noodles during storage followed a zero-order reaction and had a shelf life of up to 30 weeks, 4 days, 4 hours. Keywords: carrot noodles, retention, self life

ADSORPSI LOGAM Pb dan Cu DARI PELUMAS BEKAS MENGGUNAKAN BLENDING SELULOSA ASETAT-KITOSAN Fitra Langgeng Mangesti; Husain Sosidi; Prismawiryanti; Syamsuddin
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 2 (2019): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Research on adsorption of Pb and Cu metals from used lubricants has been carried out using cellulose acetate-chitosan blending which aims to determine the best ratio and pH between cellulose acetate and chitosan which can adsorb metal Pb and Cu from used lubricants. Cellulose acetate was synthesized through the acetylation method using cellulose extracted from palm fiber coir. The obtained cellulose acetate is brown fine powder with a yield of 62% and has a water content of 20%. Cellulose acetate was characterized using FT-IR while adsorption of Pb and Cu metals from used lubricants using AAS. The results of FT-IR analysis showed the formation of cellulose acetate with an absorption band of 1637.56 cm-1 which proved the presence of carbonyl groups (C = O). The AAS results showed that the best ratio and pH to absorb Pb and Cu metals in used lubricants is 3:1 with pH 6. Keywords: palm oil coir, acetate cellulose, chitosan, used lubricants

Aktivitas Antioksidan Likopen Buah Tomat (Solanum lycopersicum L.) Terblending dalam Minyak Padat Ikan Lele (Clarias sp): Antioxidant Activity of Lycopene from Tomato (Solanum lycopersicum L.) Blended Into Frying Fat from Catfish Oil (Clarias sp) Eka Surya Wahyuningsih; Syamsuddin; Prismawiryanti; Dwi Juli Pusptasari
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 2 (2020): 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.2020.v6.i2.13651

Research on the antioxidant lycopene of tomato fruit (Solanum lycopersicum L.) blended in frying fat from catfish (Clarias sp) oil has been done. The purpose of this research is to determine the antioxidant activity of tomato lycopene before and after being grounded into frying fat and determine the quality of frying fat after being grounded with tomato lycopene. The antioxidant activity of tomato lycopene is determined by the DPPH (2,2-diphenyl-1-picrylhydrazyl) method. Analysis of frying fat quality includes determination of pH, determination of FFA (free fatty acid) levels, determination of total fat content, measurement of water content, peroxide number and organoleptic observation. Antioxidant activity of tomato lycopen was very high, namely with inhibition value of 89.79%; 90.34%; 91.49% and 92.10%. Frying fat analysis showed high antioxidant activity of lycopene tomatoes with 50.67% inhibition; 51.63%; 51.39% and 51.23%. The results of the analysis of the quality of frying fat are nearly same with SNI quality standards, except for peroxide numbers. Keywords: tomato, lycopene, antioxidants, frying fat, catfish, DPPH

Pemisahan Logam Tanah Jarang dari Limbah (Tailing) Emas Poboya dengan Metode Pengendapan: Separation of Rare Earth Metals from Poboya Gold Waste (Tailings) by Deposition Method Arianto; Husain Sosidi; Prismawiryanti; Dwi Juli Pusptasari
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 1 (2020): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i1.13861

Gold tailings are waste generated from gold mining activities and contain minerals and rare-earth metals (REM) that are much needed in current technological developments. This research was conducted to determine the REM content contained in Poboya gold tailings, through the destruction process using sulfuric acid and precipitation using ammonium hydroxide. The results were showed that the level of REM contained in Poboya gold tailings was 6-7%. REM oxide content analysis performed with Scanning Electron Microscopy - Energy Dispersive X-Ray Spectroscopy (SEM-EDS) obtained 6 types of REM with the main REM levels namely Terbium (Tb): 77-80% dan Lanthanum (La): 13%, as well as other rare-earth metals with smaller amounts of Europium (Eu): 4-5%, Cerium (Ce): 2%, Neodymium (Nd): 0.02% and Gadolinium (Gd): 0.02%. Poboya gold waste can be used by the community as a source of REM and used in various industries. Keywords: Gold tailings, rare earth metals (REM), destruction, precipitation

Kualitas Minyak Ikan Lele Dumbo (Clarias gariepinus) Selama Penyimpanan dengan Penambahan Likopen Kasar dari Buah Tomat: Quality of Dumbo Catfish Oil (Clarias gariepinus) During Storage with The Additing of Crude Lycopene from Tomatoes Heince Andre Pua; Nurhaeni; Erwin Abdul Rahim; Prismawiryanti
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.i2.13905

The quality of Dumbo Catfish (Clarias gariepinus) oil can be maintained during storage with the addition of crude lycopene in tomatoes as an antioxidant. The purpose of this study was to obtain the best ratio between crude lycopene in tomatoes and Dumbo catfish oil during storage. The study was conducted using a variable ratio of crude lycopene: Dumbo catfish oil with 4 treatment levels (6:40, 8:40, 10:40, and 12:40 (w/v)) and storage time variables of 1, 2, 3, and 4 weeks. Lycopene levels in Dumbo catfish oil were analyzed using a UV-Vis spectrophotometer, while the quality of Dumbo catfish oil during storage was determined through peroxide value analysis. The results showed that the best ratio of crude lycopene of tomatoes: Dumbo catfish oil was 12:40 at the third week of storage with lycopene content of 0.257 grams and the peroxide value of Dumbo catfish oil was 3.45 meq/kg or had met IFOS standards. Keywords: Crude lycopene, tomato fruit, dumbo catfish oil, peroxide value.

Pengaruh Konsentrasi Asap Cair Terhadap Mutu, Total Bakteri, dan Waktu Simpan Ikan Cakalang (Katsuwonus pelamis) Asap: Effect of Liquid Smoke Concentration on Quality, Total Bacteria, and Shelf Life of Smoked Skipjack Fish (Katsuwonus pelamis) Angria Deswika Malambu; Syaiful Bahri; Hardi Ys.; Prismawiryanti; Abd. Rahman Razak
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 1 (2021): Edisi April
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.i1.14238

Liquid smoke contains acid, carbonyl, and phenolic compounds, so it is very appropriate to be used as a preservative. Traditional smoking can be replaced with liquid smoke because it is safer and more practical. The study of the use of coconut shell liquid smoke has been used in skipjack fish to determine the effect of liquid smoke concentration and storage time on dissolved protein content and total bacteria in smoked fish. The quality of smoked fish was determined by two treatments, namely the variation in the concentration of liquid smoke (2, 3, 4, and 5%) and storage time (2, 4, 6, 8, and 10 days). The results showed that the best concentration of liquid smoke to produce smoked skipjack fish is 3% with a water content of 62.41% and dissolved protein content of 17.58%. The maximum storage time of smoked skipjack tuna is 6 days with a total plate count (TPC) value or total bacteria 1.8 x 105.

MIKROENKAPSULASI EKSTRAK AMPAS JAHE MERAH DARI HASIL PEMISAHAN MINYAK JAHE MERAH Novaldi Novaldi; Prismawiryanti Prismawiryanti; Jaya Hardi; Hardi Ys
KOVALEN: Jurnal Riset Kimia Vol. 5 No. 1 (2019): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Ekstrak ampas jahe merah hasil penyulingan minyak jahe merah mengandung senyawa oleoresin yang mudah rusak. Untuk menahan kerusakannya dilakukan mikroenkapsulasi menggunakan maltodekstrin. Ekstraksi dilakukan menggunakan pelarut etanol 96% dengan lima rasio perbandingan, yaitu 1:6, 1:7, 1:8, 1:9 dan 1:10 (b/v). Mikroenkapsulasi dilakukan metode penyalutan dan teknik freeze drying. Perbandingan maltodekstrin dan ekstrak ampas jahe merah yaitu 1:6, 1:7, 1:8, 1:9 dan 1:10 (b/b). Hasil penelitian menunjukkan bahwa rendemen ekstrak ampas jahe merah yang diperoleh tertinggi pada rasio 1:10 dengan kadar 31,82%. Efisiensi penyalutan ekstrak ampas jahe merah dengan maltodekstrin yang diperoleh tertinggi pada rasio 1:6 yaitu 55,04%.Kata kunci: Ekstrak ampas jahe merah, freeze drying, penyalutan, maltodekstrin

Limbah Sabut Kelapa Muda (Cocos nucifera L.) sebagai Sumber Pewarna Kain: Young Coconut Coir (Cocos nucifera L.) Waste as a Source of Cloth Dye Ni Ketut Sumarni; Umma Fahriah Soleh; Nurhaeni; Prismawiryanti
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 3 (2021): Edisi Desember
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.i3.15642

Young coconut coir (Cocos nucifera Linn.) waste has the potential to be processed into a useful product, namely as a source of natural dyes, especially in cotton fabrics. Processing is carried out through a maceration process for 72 hours using 96% ethanol as solvent. The obtained extract was applied on cotton cloth with various concentrations of the extract solution, 5, 10, 15, 20, and 25%, and various soaking times of the fabric in the extract for 60, 90, 120, 150, and 180 minutes. The extract was analyzed using Uv-Vis Spekctrofotometer it showed that the ethanol extract or dye that is absorbed into the cotton fabric with various concentrations is 3.43, 4.82, 6.61, 7.79, and 9.03%, respectively. The various soaking times show that on the other hand that the extract absorbed into the fabric was successfully obtained around 7.75, 9.64, 10.81, 11.65, and 12.04%. The results show that the concentration of the extract solution and the increasing length of soaking time can increase the percentage of extract or dye absorbed in cotton fabrics

Pembuatan Konsentrat Protein Ampas Tahu Menggunakan Garam Ammonium Sulfat: Manufacturing of Tofu Pulp Protein Concentrate Using Ammonium Sulphate Nurhaeni; Frischa Sari Kencana; Andi Tenri Ajeng; Khairuddin; Prismawiryanti; Syamsuddin; Dwi Juli Puspitasari; Indriani; Erwin Abdul Rahim
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 1 (2022): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i1.15844

Tofu pulp which generally becomes waste can be used as a source of protein concentrate. Protein concentrates from tofu pulp have been obtained at various ratios of tofu pulp: ammonium sulfate and ammonium sulfate salt concentration. The research was conducted to obtain the highest protein yield and content of tofu pulp protein concentrate. This study used a completely randomized design (CRD) with the independent variable being the ratio of tofu pulp filtrate: ammonium sulfate (1:2, 1:3, 1:4, 1:5, 1:6, and 1:7 (v/v)) and concentrations of ammonium sulfate (30, 40, 50, 60, 70, and 80%), while the dependent variables were the yield of protein concentrate and protein content. Production of protein concentrate used the salting-out method with ammonium sulfate salt. The ratio of tofu pulp: ammonium sulfate 70% obtained the best ratio of 1:5 with a yield of 41.6% and protein content of 84.58%. Tofu pulp as industrial waste can be a potential source of protein concentrate because it has a high protein content.

Pembuatan Kertas pH dari Bahan Alam (Bunga) Sebagai Alternatif Pengganti Indikator Sintetis Di MGMP Kimia Kabupaten Donggala Dwi Juli Puspitasari; Husain Sosidi; Prismawiryanti Prismawiryanti
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 6 No 3 (2022): Volume 6 Nomor 3 Tahun 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v6i3.16896

The lack of learning resources, especially practicum infrastructure, causes practicum in schools to not be implemented. The subject of acid-base material which should be in an experiment cannot be applied due to limited indicators. The results of observations in the field showed that students could not distinguish between acidic and basic solutions because they did not get a lesson. Chemistry subject teachers in several high schools in Donggala Regency do not carry out practical work on acid-base materials because they never used natural materials such as flowers as pH paper. Therefore, it is necessary to increase the understanding of teachers regarding the concept of acids and bases and natural materials that can be used as natural indicators to replace synthetic indicators. This service activity was attended by 10 participants consisting of chemistry teachers who are members of the chemistry MGMP of Donggala Regency. Service activities are carried out by understanding the concept of acid-base and the use of natural materials as natural indicators also demonstrating and guidance on making pH paper from natural materials (flowers). This activity provides additional knowledge for teachers in the use of natural materials as a substitute for synthetic indicators in acid-base material practicum so that the quality of learning is expected to increase.

Co-Authors Abd. Rahman Razak Abdul Rahman Razak Adeks Pramana Agriyani Marcelinda, Agriyani Ahmad Ridhay Aksan Y Maradang Andarwati, Sophia Andi Tenri Ajeng Angria Deswika Malambu Arianto Asniawati Asniawati Dini Safitri Dwi Juli Puspitasari Dwi Juli Pusptasari Eka Surya Wahyuningsih Enni Indriani Ernawati A. H. Bana Erwin Abdul Rahim Firmansyah Firmansyah Fitra Langgeng Mangesti Fitriah Fitriah Frischa Sari Kencana Gloria Yoanita Hajrah Hajrah Hardi Ys Hardi Ys. Heince Andre Pua Husain Sosidi Husain Sosidi Inda, Nov Irmawati Indriani Indriani Indriani Indriani Jaya Hardi Jusman, Jusman Khairuddin Khairuddin Krisma Meylin Lasampa Laksono Trisnantoro Lisma Habiba Mappiratu Mappiratu Mappiratu Mappiratu Marsela, Anggi Moh Iqbal Moh Mirzan Moh. Mirzan Moh. Mirzan Moh. Mirzan Muh.Ricky Arisandi M. Tahili Nanda Novita Nea, Sirah Diniati Ni Ketut Sumarni Nov Irmawati Inda Nov Irmawati Inda Novaldi Novaldi Nurhaeni Nurhaeni Nurhaeni Nurhaeni Nurhaeni Nurhalisa, Sitti Pasjan Satrimafitrah Patrisia Marcevin Rengku Pratiwi Dwiasmukti Putri Wahyuni Ramadanil Riski, Mutiara Zalfa Rismawati Sikanna Rismawati Sikanna Rudy, Sri Utami Ruslan Ruslan Ruslan Sandi Purnawan Sriwulan Indriani Pea Syaiful Bahri Syamsuddin Syamsuddin Syamsuddin Sylvia Florensy Bawias Umma Fahriah Soleh Wahyu Harso WILDA YANTI Yuli Rismawati

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