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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Journal of Research and Technology Distilat: Jurnal Teknologi Separasi
Setyowati, Sekar Ayu
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering

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PENGARUH DAYA MICROWAVE TERHADAP KADAR TANIN PADA BUBUK PEWARNA ALAMI DARI SERBUK GERGAJI KAYU ULIN Setyowati, Sekar Ayu; Arifin, Zainal; Kusyanto, Kusyanto; Prayogo, Wempi
DISTILAT: Jurnal Teknologi Separasi Vol. 10 No. 2 (2024): June 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v10i2.5110

Abstract

Serbuk kayu ulin merupakan salah satu sisa hasil samping dari proses pengolahan kayu ulin. Warna coklat hingga kehitaman yang dihasilkan dari tanin dalam serbuk kayu ulin memiliki potensi sebagai bahan pewarna alami. Penelitian ini ditujukan untuk membuat bubuk pewarna alami dari serbuk kayu ulin menggunakan metode foam mat drying dengan bantuan microwave dan untuk mengetahui pengaruh microwave terhadap waktu pengeringan dan kadar tanin bubuk pewarna alami. Serbuk gergaji kayu ulin diekstrak dengan akuades menggunakan metode maserasi selama 48 jam. Ekstrak disaring dan disentifugasi dan dilanjutkan dengan mengeringkan menggunakan microwave. Pada metode ini, bahan pembusa tween 80 dengan variasi konsentrasi 0,5% (v/v) dan 1% (v/v) serta  bahan pengisi maltodekstrin dengan konsentrasi 5% (b/v) dari ekstrak kayu ulin ditambahkan. Ekstrak kayu ulin dikeringkan dengan bantuan microwave dengan variasi daya (180, 300, 450, 600, dan 800 Watt) hingga memiliki kadar air sekitar 4-6% (b/b). Ekstrak pewarna alami dikeringkan menjadi bubuk lebih cepat ketika daya microwave semakin tinggi, dimana pada daya 800 Watt pengeringan ekstrak membutuhkan 65 menit. Kadar air bubuk pewarna alami yang diperoleh antara 4,89% (b/b) hingga 5,78% (b/b) dan kelarutan tertinggi sebesar 97,82% dengan penambahan Tween 80 pada konsentrasi 0,5% (b/v). Uji kualitatif tanin pada bubuk pewarna alami menunjukkan bahwa terdapat kandungan tanin pada serbuk pewarna alami. Kadar tanin tertinggi diperoleh sebesar 3,04 ppm pada bubuk pewarna yang dihasilkan dari variasi tween 80 dengan konsentrasi 1% dan pada daya microwave 180 Watt.
INVESTIGASI PENGARUH JENIS MIKROORGANISME LOKAL PADA KUALITAS POC YANG DIHASILKAN DARI POME Setyowati, Sekar Ayu; Fitriyana, Fitriyana; Aisyah, Cici Nur
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 24, No 2 (2025): Oktober 2025
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v24i2.8285

Abstract

Liquid organic fertilizer primarily consists of components derived from fermented animal or plant materials. Palm Oil Mill Effluent (POME) is an organic waste comprising water, oil, and organic solids. Empty Fruit bunches (EFB) of oil palm serve as a source of organic material rich in nitrogen (N), phosphorus (P), potassium (K), and magnesium (Mg). The aim of this research is to determine the impact of local microorganisms in steamed rice and EFB on the production of liquid organic fertilizer by incorporating EFB fibers and molasses, followed by a 13-day fermentation period. The experimental design utilized MOL derived from steamed rice and EFB bioactivators, with MOL volumes varying at 40, 60, 80, 100, and 120 mL. The results indicated that the addition of MOL positively influenced both nitrogen content and pH levels, which increased with higher MOL volumes. In contrast, the effect of MOL on phosphorus and potassium content displayed a stagnant trend. The highest nitrogen 0.25 and phosphorus 0.03% (w/v) concentrations were observed in the liquid organic fertilizer produced with 120 mL of EFB-derived MOL. The optimal potassium content 0.48% (w/v) was achieved with 80 mL of EFB-derived MOL. The most favorable pH levels were recorded at MOL volumes of 40 and 60 mL, measuring 7.28 and 7.49.
A Potential and Characteristics Identification of Nanoemulsions Production from CPO using Sonication Methode Setyowati, Sekar Ayu
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1153

Abstract

Emulsions are colloidal dispersions of liquids/phases/droplets that do not mix with other liquids, which generally consist of an oil phase and an aqueous phase. Based on the dispersed phase particle size, stability, and appearance emulsions are divided into three categories: conventional emulsions, microemulsions, and nanoemulsions. Sonication is one of the most widely developed methods as it is proven to be more effective in producing nano-sized particles when compared to conventional methods. This research is a preliminary research to determine the best formulation for the preparation of emulsion from CPO using sonication method and to determine the characteristics of CPO emulsion as well as to develop the potential usefulness and economic value of CPO.  The variations were 1, 3, 5, 7, 9% (v/v) CPO with distilled water and 5 ml of tween 80 as surfactant. The smallest particle size was obtained in the variation with the amount of CPO 1 ml, which was 188.4 nm and the PDI (Polydispersity Index) value was 0.663, indicating that the particles produced were heterogeneous. Thus, the emulsion produced had a pH between 4-5, a viscosity of about 1 cp, and had good stability during the 14 days of observation.
Co-Authors Aisyah, Cici Nur Fitriyana Fitriyana, Fitriyana Kusyanto Kusyanto Prayogo, Wempi Zainal Arifin