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All Journal Alchemy : Journal of Chemistry Pharmaciana: Jurnal Kefarmasian EduChemia: Jurnal Kimia dan Pendidikan Journal Of Chemical Process Engineering (JCPE) Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia ASEAN Journal of Chemical Engineering Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang JAPI: Jurnal Akses Pengabdian Indonesia Sainsbertek Jurnal Ilmiah Sains & Teknologi
Yuniati, Yuyun
Program Studi Kimia, Fakultas Sains Dan Teknologi, Universitas Ma Chung Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Other

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PENINGKATAN KONTROL KUALITAS KOPI ROBUSTA COFFEA CANEPHORA FERMENTASI DESA KUCUR DENGAN OPTIMASI LEVEL ROASTING Natanael Anugerah Tuuk Natan; Rollando; Muhammad Hilmi Afthoni; Yuyun Yuniati
Sainsbertek Jurnal Ilmiah Sains & Teknologi Vol. 3 No. 2 (2023): Maret - Sainsbertek Jurnal Ilmiah Sains & Teknologi
Publisher : Fakultas Sains Dan Teknologi Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sb.v3i2.230

Abstract

Parametric Study and Characterization of Sappan Wood (Caesalpinia Sappan Linn) Natural Red Colorant Extract with Ultrasonic Assisted Extraction Method Yuyun Yuniati; Dhiya Dini Azmi; Eric Nurandriea; Lailatul Qadariyah; Mahfud Mahfud
ASEAN Journal of Chemical Engineering Vol 23, No 1 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.77249

Abstract

In this study, the optimization and characterization of the colorant extraction process from sappan wood were carried out using the ultrasound-assisted extraction method. Sappan is proposed as a source of natural material wealth, producing a natural red colorant that is being needed by the community in the food sector. Based on this research, the optimum operating conditions for the extraction of sappan wood were obtained using a frequency of 40 kHz, a temperature of 60 °C, a ratio of 0.0050 g mL-1, an extraction time of 20 min, and the use of 60% ethanol solvent. Sappan wood extract created a yellow to reddish orange color at acidic pH (2-6), red at neutral pH (7) and shifted towards purplish red with increasing pH. The extract was qualitatively positive containing quinone, flavonoid, quinone, and tannin compounds, as well as several phenolic compounds detected in the Gas Chromatography Mass Spectroscopy qualitative test.
Upaya Penghilangan Senyawa Kimia Krom dari Limbah Kulit Wet Blue melalui Program Pengabdian Masyarakat Leny Yuliati; S. Alfisyah Nur Aziza; Yuyun Yuniati
JAPI (Jurnal Akses Pengabdian Indonesia) Vol 8, No 2 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/japi.v8i2.4755

Abstract

Industri kulit di Indonesia masih menjadi prospek bisnis yang dapat memberi dampak positif terhadap keutuhan ekonomi nasional masa kini. Produk akhir hasil industri kulit masih sangat dibutuhkan bagi masyarakat untuk memenuhi kebutuhan sandang dan cinderamata, sehingga sektor ini mendapat sorotan positif di tengah pasar internasional. Pada proses industri kulit terdapat proses penyamakan yang dapat menghasilkan limbah berbahaya bagi lingkungan. Pada PT XXX, Malang, krom (III) adalah salah satu jenis senyawa limbah yang perlu dikurangi kadarnya karena berbahaya dan beracun. Pada pengabdian ini telah dilakukan upaya dalam mengurangi kadar krom ini secara kualitatif dan penentuan kandungannya secara kuantitatif. Prosedur kualitatif mencakup proses oksidasi krom (III) menjadi krom (VI), dan presipitasi, sedangkan untuk prosedur kuantitatif dilakukan perhitungan jumlah krom yang telah teroksidasi dengan spektrofotometer ultraviolet-tampak (UV-Vis). Berdasarkan hasil kegiatan ini disimpulkan bahwa prosedur kualitatif dan kuantitatif yang dirancang pada penelitian ini dapat berhasil dilakukan, yang mana pada akhirnya sebanyak 2–4,15% kandungan krom(VI) berhasil diisolasi dari limbah kulit.
Co-Authors Achmad Qodim Syafa'atullah Alfanaar, Rokiy Anitarakhmi Handaratri Dhiya Dini Azmi Donny Satria Bhuana Eric Nurandriea Heriyanto Heriyanto Kestrilia Rega Prilianti Lailatul Qadariyah Leny Yuliati Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Melany Melany Monica, Eva Natanael Anugerah Tuuk Natan Pradipta Risang Ratna Sambawa Rollando, Rollando Ruth Febriana Kesuma S. Alfisyah Nur Aziza Sandra Dewi Tansil Saras Nurani Putri Sultan Arif Rahmadianto Sultan Arif Rahmadianto Zuri Rismiarti