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AKTIVITAS ANTIBAKTERI DAN TOKSISITAS MINYAK SERAI DAPUR (Cymbopogon citratus) DENGAN PERLAKUAN PEMEKATAN PADA SUHU BERBEDA Reni Febriani; Eti Rohaeti; Wulan Tri Wahyuni
Analit: Analytical and Environmental Chemistry Vol 6, No 2 (2021): Analit: Analytical and Environmental Chemistry
Publisher : Universitas Lampung Jl. Prof. Dr. Sumatri Brojonegoro No.1 Bandar Lampung

Minyak atsiri serai (Cymbopogon citratus) dapur telah dipergunakan secara luas di berbagai industri, diantaranya sebagai agen antibakteri. Pada penelitian ini dievaluasi aktivitas antibakteri dan toksisitas minyak serai dapur yang dipekatkan pada suhu berbeda. Toksisitas dievaluasi melalui uji brine shrimp lethality test (BSLT), sementara uji antibakteri dilakukan terhadap bakteri Staphylococcus aureus dan S. epidermidis dengan metode difusi dan dilusi. Komponen kimia yang terdapat dalam minyak serai dianalisis menggunakan kromatografi gas spektrometri massa (GC-MS). Hasil yang diperoleh menunjukkan berdasarkan uji BSLT diperoleh nilai lethal concentration 50 (LC50) sampel minyak serai dapur semua perlakuan < 1000 ppm dengan LC50 terendah sebesar 16,53 ± 2,82 ppm. Nilai konsentrasi hambat minimun (KHM) dan konsentrasi bunuh minimum (KBM) minyak serai dapur terhadap S. aureus umumnya lebih rendah dibanding terhadap S. epidermidis. Aktivitas antibakteri minyak serai dapur terhadap S. aureus terkategori sangat kuat dengan nilai KHM dan KBM terendah ditunjukkan oleh minyak serai tanpa perlakuan pemekatan yaitu sebesar 1250 dan 2500 ppm terhadap S. aureus. Komposisi senyawa kimia utama dalam minyak serai dapur berdasarkan analisis GC-MS ialah sitral, neral dan β-myrcenehttp://dx.doi.org/10.23960/aec.v6.i2.2021.p168-179

Determinan Yang Mempengaruhi Penyaluran Pembiayaan Gadai (Rahn) Pada PT. Pegadaian Syariah Indonesia Periode 2017-2021 Reni Febriani; Moh. Huzaini; Taufiq Chaidir
ALEXANDRIA (Journal of Economics, Business, & Entrepreneurship) Vol. 4 No. 2 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/alexandria.v4i2.479

This study aims to analyze the influence of determinants that influence the distribution of pawn financing (Rahn) at PT. Indonesian Sharia Pawnshop for the 2017-2021 Period. The data used is quarterly data for each variable. The method used in this research is the multiple linear regression method using the Ordinary Least Square (OLS) analysis tool through the Eviews 9 program. The research results obtained are a) From the t test, the results show that partially the variables Number of Customers and Gold Price have a significant influence towards the Distribution of Pawn Financing (Rahn). Meanwhile, the Inflation Rate variable does not have a significant influence on the Distribution of Pawn Financing (Rahn); b) From the results of the f test, it was found that simultaneously the variables Number of Customers, Inflation Level and Gold Prices had a significant influence on the Distribution of Pawn Financing (Rahn); c) From the Adjusted R2 test, the results show that the variables Number of Customers, Inflation Level and Gold Price have an influence of 95.1% on the Distribution of Pawn Financing (Rahn)

Factors Affecting Firm Value of Manufacturing Companies Listed on the Indonesia Stock Exchange (IDX) Reni Febriani; Supriyanto
TEMA Vol. 25 No. 2 (2024)
Publisher : Fakultas Ekonomi dan Bisnis Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/tema.25.2.117-127

The primary components of this research are the DER Ratio, Current Ratio (CR), ROE Ratio, and TATO Ratio. From 2019 to 2022, data from 185 manufacturing companies listed on the Indonesia Stock Exchange (IDX) were analyzed using a quantitative approach. This research provides an analysis of factors that influence firm value in their operations. The results show that TATO and CR have an insignificant influence on firm value, whereas DER and ROE have a significant impact. Companies that manage their debt and equity capital well tend to be more attractive to investors, as high ROE indicates good profitability, while an appropriate DER indicates effective debt management. This research is useful for investors in selecting more important factors to consider when assessing investment potential in manufacturing companies, as well as for companies in designing strategies to enhance firm value.

Biobriket Berbasis Limbah Lignoselulosa Berstandar Mutu SNI: Review Mochammad Fajar Aliyyansyah; Cantika Wahyu Maharani; Reni Febriani; Asep Kadarroman
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 7 No. 1 (2025): JPPL, Maret 2025
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M), Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v7i1.2587

Penipisan cadangan energi tak terbarukan mendorong pengembangan sumber energi alternatif yang terbarukan, seperti energi biomassa. Biomassa merupakan bahan organik yang berasal dari makhluk hidup dan mengandung senyawa seperti karbohidrat, protein, serta lemak. Selain itu, biomassa juga mengandung lignoselulosa yang memberikan potensi besar sebagai bahan baku produk energi seperti biobriket. Artikel ini bertujuan mengkaji karakteristik biobriket dari limbah lignoselulosa berdasarkan standar mutu SNI briket. Penelusuran data menggunakan studi literatur melalui pencarian di Google Scholar, Research Gate, dan ScienceDirect dengan kata kunci “Limbah lignoselulosa”, “Biomassa”, dan “Biobriket”. Literatur yang dipilih mencakup jurnal dan prosiding seminar nasional ilmiah dalam sepuluh tahun terakhir yang diseleksi menggunakan diagram PRISMA. Jumlah literatur yang digunakan sebanyak 21 jurnal terindeks SINTA, 5 jurnal terindeks Scopus, 2 jurnal terindeks Garuda, 5 jurnal non-indeks yang diperoleh melalui Google Scholar, serta 3 prosiding seminar nasional ilmiah kemudian data yang diperoleh diolah dengan meta-analisis. Hasil penelitian menunjukkan bahwa kualitas briket yang dihasilkan dipengaruhi oleh bahan baku yang digunakan. Biobriket yang memenuhi SNI dapat dinilai berdasarkan kandungan lignoselulosanya, bahan dengan kadar lignin tinggi cenderung memiliki nilai kalor yang lebih besar, sehingga berpotensi menjadi bahan baku yang optimal. Sebaliknya, bahan dengan kandungan lignin rendah memiliki potensi energi yang lebih rendah saat pembakaran. Secara keseluruhan, limbah lignoselulosa memiliki potensi besar sebagai bahan baku biobriket berkualitas berdasarkan standar mutu SNI, terutama dengan optimasi proses produksi melalui kombinasi bahan baku. Kata kunci: Biobriket, biomassa, limbah lignoselulosa, standar mutu SNI

Biobriket Berbasis Limbah Lignoselulosa Berstandar Mutu SNI: Review Mochammad Fajar Aliyyansyah; Cantika Wahyu Maharani; Reni Febriani; Asep Kadarroman
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 7 No. 1 (2025): JPPL, Maret 2025
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M), Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v7i1.2587

The depletion of non-renewable energy reserves encourages the development of alternative renewable energy sources, such as biomass energy. Biomass is an organic material derived from living organisms and contains biochemical compounds such as carbohydrates, proteins, and fats. Moreover, biomass also contains lignocellulose, which holds significant potential as a raw material for energy products such as bio briquettes. This article aims to examine the characteristics of bio briquettes from lignocellulose waste based on SNI briquette quality standards. Data search using literature studies with searches on Google Scholar, Research Gate, and ScienceDirect with the keywords "Lignocellulosic waste", "Biomass", and "Bio briquettes". The selected literature includes journals and national scientific seminar proceedings from the last ten years, screened using the PRISMA diagram. The literature used was 21 journals indexed in SINTA, 5 journals indexed in Scopus, 2 journals indexed in Garuda, 5 non-indexed journals obtained through Google Scholar, and 3 national scientific seminar proceedings, the data obtained was processed using meta-analysis. The results show that the characteristics of bio briquettes are influenced by the raw material. Bio Briquettes that comply with SNI standards can be assessed based on their lignocellulose content. Materials with high lignin levels tend to have a higher calorific value, making them potentially optimal raw materials. In contrast, materials with low lignin content have lower energy potential during combustion. Overall, lignocellulosic waste has significant potential as a raw material for high-quality bio briquettes based on SNI quality standards, especially through production process optimization by combining various raw materials. Keywords: Bio Briquettes, biomass, lignocellulose waste, SNI quality standards

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