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All Journal IPTEK The Journal of Engineering Seminar Nasional Teknik Kimia Kejuangan Sewagati
Triastuti, Warlinda Eka
Departemen Teknik Kimia Industri, Institut Teknologi Sepuluh Nopember, Surabaya
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering Social Sciences

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The Production of Gelatin from Snapper Scales (Lutjanus camphecanus Sp.) through Enzymatic Pretreatment Warlinda Eka Triastuti; Suprapto Suprapto; Elly Agustiani; Lailatul Qomariyah; Agung Subyakto; Treisnaning Widasgantri; Marchel Abednego Septa K
IPTEK The Journal of Engineering Vol 8, No 1 (2022)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v8i1.a12860

Abstract

Fish wastes such as fish bones and scales have a potential to be used as a gelatin source. It can be used as an alternative material to replace pork or bovine which ordinarily conflicted with religion issue. Gelatin from fish has different characteristics compared with mammalian source. It has several advantageous properties such as high amount of hydrophobic amino acids, less proline and hydroxy proline, lower gelling ability, and melting point. In this study, gelatin was produced from fish waste especially snapper scales using the bromelain enzyme at the pre-treatment stage to improve its characteristic. The snapper scales soaking in hot water at 80⁰C for about 30 minutes to remove the fat which attached the scales. A pre-treatment has been conducted using bromelain enzyme solution at various concentrations of 1%, 2%, 3%, 4% and 5% for 6 hours to remove non-collagenous proteins and loosen the bonds of the fish scales. The next step is demineralization using a 15% concentration of citric acid solution for 3 days. The ossein formed in the demineralization stage was then hydrolyzed at 50⁰C and 70⁰C for 9 hours with stirring at 300 rpm. The best gelatin yield was obtained from the pretreatment of bromelain enzyme solution with a concentration of 3% at a hydrolysis temperature of 70⁰C with a yield of 9.13%, pH value of 3.86, water content of 8%, ash content of 0.80%. FTIR spectra shows the presence of functional groups correspond to gelatin formation, such as carbon, hydrogen, hydroxyl group (O-H), carbonyl group (C=O), amine group (N-H) and alkene group (C=C). The heavy metal content test showed that the gelatin contained no heavy metal content of lead (Pb), mercury (Hg), cadmium (Cd) and arsenic (As).
Pembuatan Biogas dari Kotoran Sapi Menggunakan Biodigester di Desa Jumput Kabupaten Bojonegoro Soeprijanto; Suprapto; Danawati Hari; Niniek Fajar Puspita; Lily Pudjiastuti; Budi Setiawan; Warlinda Eka Triastuti; Achmad Ferdiansyah; Nurlaili Humaidah; Arino Anzip
Sewagati Vol 1 No 1 (2017)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.926 KB) | DOI: 10.12962/j26139960.v1i1.294

Abstract

Di desa Jumput Kecamatan Sukosewu Kabupaten Bojonegoro Provinsi Jawa Timur, kebanyakan masyarakatnya hidup bertani dan berternak sapi. Terutama pada masyarakat yang berternak sapi, mereka mempunyai kendala dalam pembuangan limbah kotoran sapi, karena banyak limbah yang dihasilkan, sehingga kebanyakan mereka membuang limbah ke sembarang tempat dan belum dimanfaatkan secara optimal. Limbah banyak dibuang ke sungai, sehingga pada musim hujan akan menimbulkan banjir karena terjadi penumpukan padatan dan juga akan mencemari air sungai yang menjadi tidak baik pada kesehatan manusia dan hewan. Untuk mengatasi buangan limbah kotoran sapi tersebut, maka limbah dapat dimanfaatkan sebagai sumber energi terbarukan, salah satunya adalah biogas. Biogas yang dihasilkan nanti akan dimanfaatkan oleh masyarakat di desa Jumput untuk keperluan masak di dapur dan untuk penerangan. Biogas adalah merupakan salah satu bioenergi yang dihasilkan melalui proses fermentasi biomassa dengan bantuan aktifitas mikroorganisme. Proses fermentasi dalam pembentukan biogas dilakukan dalam biodigester dengan mengumpankan limbah kotoran sapi dan dicampur dengan air dengan komposisi tertentu. Proses fermentasi umumnya memerlukan waktu cukup lama sekitar 14-21 hari untuk menghasilkan biogas. Sebelum di implementasikan ke lapangan, kegiatan pembuataan biogas sering dilakukan di laboratorium Pengolahan Limbah Industri, Program Studi DIII Teknik Kimia FTI-ITS menggunakan berbagai bahan baku. Hasil luaran yang dihasilkan dalam kegiatan pengabdian kepada masyarakat adalah berupa alat biodigester bekerja secara semi kontinyu
Sosialisasi Pemanfaatan Desinfektan Sebagai Tindakan Preventif Infeksi Covid-19 di Lingkungan Tempat Tinggal Achmad Dwitama Karisma; Saidah Altway; Eva Oktavia Ningrum; Niniek Fajar Puspita; Daril Ridho Zuchrillah; Afan Hamzah; Lily Pudjiastuti; Warlinda Eka Triastuti
Sewagati Vol 5 No 2 (2021)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1560.684 KB)

Abstract

COVID-19 adalah salah satu penyakit menular yang disebabkan oleh SARS-CoV-2 (severe acute respiratory syndrome coronavirus-2), dimana COVID-19 ini merupakan virus corona jenis baru. Virus corona merupakan virus yang memiliki selubung atau sampul (enveloped virus) dengan pelindung lapisan lemak. Lapisan lemak tersebut dapat dirusak oleh desinfektan sehingga membuat virus corona cukup lemah, dibandingkan dengan norovirus yang merupakan virus tanpa selubung dan virus lainnya yang memiliki cangkang protein yang lebih kuat. Dengan tingginya kasus positif Covid-19 di Indonesia, pemerintah dan warga negara Indonesia telah berupaya untuk menurunkan penyebaran dari virus ini, seperti Pembatasan Sosial Berskala Besar (PSBB), bekerja dan bersekolah dari rumah masing-masing, serta membiasakan pola hidup bersih dan sehat (PHBS). Selain itu, di tempat umum maupun di kawasan tempat tinggal warga banyak yang memanfaatkan desinfektan sebagai tindakan preventif penyebaran virus ini. Akan tetapi, masih banyak warga yang belum paham akan kegunaan dan standar keselamatan dan kesehatan dalam penggunaan desinfektan ini. Instansi pendidikan khususnya universitas/institut merupakan elemen yang tak terpisahkan dari masyarakat, sehingga wajib memberikan dampak yang baik terhadap masyarakat secara umum. Pengabdian masyarakat ini bertujuan untuk memberikan sosialisasi dan edukasi terkait dengan pemanfaatan desinfektan sebagai tindakan preventif penyebaran Covid-19 di lingkungan tempat tinggal. Sosialisasi dilaksanakan di rumah masing-masing secara daring.
Analisa Kandungan Logam Berat Krom pada Air Sumur Menggunakan Spektrofotometri Warlinda Eka Triastuti; Elly Agustiani; Ade Citra Oktaviana Elok Sampurno; Yustia Dwi Fitria; Hanifah Fauziyah; Sunia Rahma; Anaral Al Ardhi Rudianto; Firda Amalia; Avisa Damayanti
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Clean water has many uses in human daily life. The quality of clean water can be seen from three aspects: chemical, physical, and biological. Chromium (VI) or Cr (VI) is one type of heavy metal that can be harmful to human health if it is present in water because it is carcinogenic. This research will determine the level of chromium in well water samples in the Kalipecabean, Keputih, Kapas Madya, Nginden, and Madura areas using UV-Vis spectrophotometry and compare it with the Regulation of the Minister of Health of the Republic of Indonesia Number: 32/MENKES/PER/2017. The initial stage of the experiment includes the preparation of reagent solutions, followed by the calibration of the instrument and the preparation of a standard curve by making standard solutions with concentrations of 1, 2, 3, 4, and 5 ppm. The standard solutions are then tested for their absorbance using a spectrophotometer. The final stage is adding reagents to the water samples and measuring their absorbance using a spectrophotometer. From the results of the study, it was found that the levels of chromium in the well water samples in the Kalipecabean, Keputih, Kapas Madya, Nginden, and Madura areas are 0.004 ppm, 0.005 ppm, 0.005 ppm, 0.002 ppm, and 0.003 ppm, respectively. The experimental results show that the level of chromium contained in the well water is relatively low and still meets the maximum chromium content level in water according to the Regulation of the Minister of Health of the Republic of Indonesia Number: 32/MENKES/PER/2017.
Modifikasi Pati Secara Asetilasi dan Aplikasinya Sebagai Bahan Dasar Filamen Jaring Ikan Ramah Lingkungan Warlinda Eka Triastuti; Suprapto Suprapto; Tisnuliah Muyassaroh; Suardhana Bawafi; Ade Citra Oktaviana Elok Sampurno; Muhammad Akha Meghotsah; Fitra Diannico Aditama; Krisna Setya Ardhana
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Fishing nets are generally made of synthetic polyamides such as nylon. The use of nylon nets has negative impacts, such as habitat destruction. So it is necessary to consider the use of biodegradable nets. One of the potential natural materials that can be used as eco-friendly fishing net filaments is starch. The research aims to modify cassava and corn starch by acetylation method to improve their characteristics. Starch modification was carried out by adding acetic acid with variable concentrations of 10%, 15%, 20%, 25%, and 30% into the starch. Modified starch was analysis for water content, swelling power, solubility, and FTIR. In the manufacture of filaments using modified corn 15% with a test result of 0.04; 0.13; 0.05. The results of the FTIR analysis showed a combined functional group between HDPE and starch at wave numbers 2922.2cm-1 and 1371.7cm-1. Starch content has an effect on reducing the weight of filament degradation. SEM analysis showed that the compatibility of the filament with the addition of MA increased but the internal structure of the filament gradually expanded with increasing starch content. The results of the analysis of tensile strength and elongation at break of the filament are 1.81 kgf and 119.77%
Pengaruh Variasi Bahan Pengendap pada Proses Purifikasi Enzim Bromelin dari Bonggol Nanas (Ananas Comosus L.) Warlinda Eka Triastuti; Sunia Rahma Cahyaning Tyas; Hanifah Fauziyah Zahrah; Kabira Bennani; Erika Desi Cahyani; Tatya Annur Ramadita; Adel Frisca Rahayu
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Waste from processed pineapples (pineapple core) is currently underutilized, despite the high content of the bromelain enzyme found in the fruit. This research aims to determine the effect of precipitating agents on the purification process of bromelain enzyme production using a phosphate buffer on the resulting enzyme yield and to analyze the effect of the precipitating agents on the purification process of bromelain enzyme production using a phosphate buffer on the bromelain enzyme activity. The variables used in this study were a 0.1 M phosphate buffer, 55%; 60%; 65%; 70%; 75% aseton concentration, 5%; 10%; 15%; 20%; 25% NaCl concentration, and 60%; 65%; 70%; 75%; 80% ethanol concentration. This study will be conducted in three stages, namely Extraction, Purification, and Drying. The highest yield was obtained with 60% aseton concentration (1.44%), 65% ethanol concentration (1.42%), and 15% NaCl concentration (2.2%). The optimal enzyme activity was obtained with 60% aseton concentration (20225.616 U/gr), 65% ethanol concentration (6266.765 U/gr), and 15% NaCl concentration (2281.357 U/gr). In conclusion, the best result for producing bromelain enzyme powder from pineapple cores is by using a 60% aseton concentration solvent.
Penentuan Kadar Sulfat pada Air Sumur di Wilayah Surabaya Menggunakan Spektrofotometer Elly Agustiani; Warlinda Eka Triastuti; Ade Citra Oktaviana Elok Sampurno; Hanifah Fauziyah Zahrah; Sunia Rahma Cahyaning Tyas; Yustia Dwi Fitria Santoso; Affy Milatur Rahmawati; Amelia Martasari; Ellen Septia Wintara; Hafid Amali
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The quality of drinking water can be assessed based on three aspects: physical, chemical, and microbiological aspects. One of the chemical aspects in determining water quality is the sulfate content. UV-Vis spectrophotometry method has been widely used to analyze sulfate content. UV-Vis spectrophotometry is a spectroscopic analysis technique that uses an electromagnetic wave source with ultraviolet (UV) for wavelength (190-380 nm) and visible light with wavelength (380-780 nm). The purpose of this study is to determine the absorbance and concentration of samples using spectrophotometric analysis, calculate the sulfate content in the samples, and compare it with the Indonesian Ministry of Health Regulation Permenkes RI No. 32//2017. The research stages include calibration, calibration curve creation, making standard H2SO4 solutions, measuring the absorbance of the standard solutions, and analyzing the sulfate content in water samples. The research results showed that the sulfate concentration in the Bangkalan, Nginden, Sidoarjo, Keputih, and Kapas Madya well water samples were 14.0817, 27.551, 29.1837, 49.0817, 54.6939 ppm, respectively. Based on the Indonesian Ministry of Health Regulation Permenkes RI No. 32//2017, the maximum sulfate content in water is 400 mg/L, thus it can be concluded that the water samples in those areas have met the clean water standards.
Effect of Steam Delignification and Bleaching Process on Pineapple Leaf Fiber as Textile Raw Material Warlinda Eka Triastuti; Suprapto Suprapto; Agus Surono; Mochammad Zayyan Difa Fadhillah; Regita Syahra Ramadhan; Sunia Rahma Cahyaning Tyas; Hanifah Fauziyah Zahrah
IPTEK The Journal of Engineering Vol 9, No 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i2.a17325

Abstract

Pineapple is a local commodity in Indonesia that is widely cultivated. The part of the pineapple plant that is mostly used is only the fruit part, while the other plant parts are discarded and become waste. Pineapple leaves contain high fiber content of cellulose, lignin, and hemicellulose, so it is very potential if used as an alternative textile raw material. The quality of pineapple leaf fiber can be improved by going through a delignification process using an alkaline solvent with the appropriate concentration and time. This research  determine the effect of delignification of pineapple leaf fiber with a solution of Sodium Hydroxide (NaOH), Hydrogen Peroxide (H2O2) and water (H2O) on tensile strength, lignin content and Scanning Electron Microscope (SEM). This research consist of six stages including delignification using 3% NaOH and 3% H2O2, washing, neutralization, preservation, and analysis of pineapple leaf fiber products. The results obtained are pineapple leaf fiber lignin test after delignification and bleaching, the best lignin results are steam delignification at 80°C with 3% NaOH solution and bleaching solution using NaOCl solution obtained 21% lignin content with a tensile strength test of  0.263 kgf/mm2. SEM analysis also showed that there was a loss of material from the fiber surface which indicated that there was degradation due to the addition of bleaching solution. This proves that alkaline treatment can also cause discoloration of natural fibers due to the removal of natural dyes in natural fibers.
Co-Authors Achmad Dwitama Karisma Achmad Ferdiansyah Ade Citra Oktaviana Elok Sampurno Ade Citra Oktaviana Elok Sampurno Ade Citra Oktaviana Elok Sampurno Adel Frisca Rahayu Adi Soeprijanto Afan Hamzah, Afan Affy Milatur Rahmawati Agung Subyakto Agus Surono Agustiani, Elly Altway, Saidah Amelia Martasari Anaral Al Ardhi Rudianto Arino Anzip Avisa Damayanti Budi Setiawan Danawati Hari Ellen Septia Wintara Erika Desi Cahyani Firda Amalia Fitra Diannico Aditama Hafid Amali Hanifah Fauziyah Hanifah Fauziyah Zahrah Hanifah Fauziyah Zahrah Hanifah Fauziyah Zahrah Kabira Bennani Krisna Setya Ardhana Lailatul Qomariyah Lily Pudjiastuti, Lily Marchel Abednego Septa K Mochammad Zayyan Difa Fadhillah Muhammad Akha Meghotsah Niniek Fajar Puspita, Niniek Fajar Nurlaili Humaidah Regita Syahra Ramadhan Suardhana Bawafi Sunia Rahma Sunia Rahma Cahyaning Tyas Sunia Rahma Cahyaning Tyas Sunia Rahma Cahyaning Tyas Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Tatya Annur Ramadita Tisnuliah Muyassaroh Treisnaning Widasgantri Yustia Dwi Fitria Yustia Dwi Fitria Santoso Zuchrillah, Daril Ridho