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Kurnia Sada Harahap
Dumai Marine And Fisheries Polytechnic
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology Physics

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Efektivitas Penambahan Serbuk Daun Mangrove (Sonneratia caseolaris) terhadap Kualitas dan Umur Simpan Roti Tawar : The Effectiveness of Adding Mangrove Leaf Powder (Sonneratia caseolaris) on the Quality and Shelf Life of White Bread Sumartini Sumartini; Kurnia Sada Harahap; Novi Luthfiyana
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 25 No 2 (2022): Jurnal Pengolahan Hasil Perikanan Indonesia 25(2)
Publisher : Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v25i2.40708

Abstract

Roti tawar merupakan pilihan praktis masyarakat untuk sarapan sebagai alternatif pengganti nasi. Permasalahan terbesar pada roti tawar salah satunya, yaitu mudah mengalami penurunan mutu dikarenakan umur simpan yang pendek sehingga sangat cepat ditumbuhi jamur dan munculnya bau tengik. Upaya yang dapat dilakukan untuk memperpanjang umur simpan dan kualitas roti tawar adalah penambahan antioksidan alami berupa serbuk daun mangrove (Sonneratia caseolarils). Tujuan penelitian ini menentukan pengaruh penambahan serbuk daun mangrove (SDM) terhadap kualitas dan umur simpan roti tawar. Metode penelitian ini mengikuti Rancangan Acak Lengkap (RAL) yang terdiri dari enam perlakuan yaitu penambahan SDM 0g/100g (kontrol), 0,5g/100g, 1g/100g, 1,5g/100g, 2g/100g, dan 2,5g/100g dengan tiga kali ulangan. Data dianalisis dengan ANOVA dilanjutkan uji Jarak Nyata Terdekat Duncan (JNTD) pada taraf 0,05. Hasil penelitian menunjukkan bahwa penambahan SDM secara signifikan meningkatkan Perlakuan SDM 0,5-1,50 g/100g tidak berpengaruh secara signifikan pada volume dan kekerasan roti tawar namun perlakuan SDM 2-2,5g/100g berpengaruh secara signifikan pada volume dan tekstur roti tawar. Penambahan SDM pada roti tawar dapat meningkatkan persen inhibisi antioksidan pada roti tawar. Perlakuan penambahan SDM terbukti efektif dalam mengurangi tingkat akumulasi peroksida dengan perlakuan terbaik pada penambahan SDM 2g/100g yang dapat mengurangi tingkat akumulasi peroksida selama delapan hari masa simpan. Hal ini dikarenakan penambahan serbuk daun mangrove berpotensi menurunkan laju oksidasi lemak dan meningkatkan peran antioksidan selama masa sinpan roti tawar.
Chemical Characteristics of Catfish (Pangasius pangasius) Processing Liquid Waste Apri Mujiyanti; Nirmala Efri Hasibuan; Putri Wening Ratrinia; Aulia Azka; Sumartini Sumartini; Muh Suryono; Basri Basri; Kurnia Sada Harahap; Shiffa Febyarandika Shalichaty
Berkala Perikanan Terubuk Vol 51, No 2 (2023): Juli 2023
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/terubuk.51.2.1890-1894

Abstract

Catfish is the main commodity fish smoking in the Kampar area. Increasing the amount of production causes the waste obtained to be higher. If waste is not managed properly it will pollute the environment. Liquid organic fertilizer is an alternative utilization of processing waste. The purpose of this study was to determine the characteristics of the elements N, P, and K in liquid organic fertilizer from catfish processing wastewater. Making liquid fertilizer is done through fermentation techniques. In this case the fermentation was carried out with variations in the time range, 10, 15 and 20 days with variations in the addition of the volume of EM4 microorganisms 0 ml, 10 ml, 20 ml and 30 ml. The catfish waste liquid fertilizer is dark brown to brownish yellow with a pH ranging from 6.65 -7.03. The highest N, P, and K content of catfish waste liquid fertilizer was found to be nitrogen (N) 0.55% with the addition of EM4 30ml with a fermentation time of 10 days, phosphorus (P) 1.01% without the addition of EM4 with a fermentation time of 20 days, and potassium (K) 0.32% with the addition of EM4 30 ml with a fermentation time of 15 days.
Analisis Usaha Operasional Lift Net di Teluk Bone, Kabupaten Bone, Sulawesi Selatan Kurnia Sada Harahap; Muhammad Maskur; Muhammad Sogirun; Mohammad Roin Najih; Bombongan Kusmedy
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.9346

Abstract

The bagan boat is a type of fishing gear that utilizes light to attract schools of fish, either through positive phototaxis or by luring fish searching for food around the light. This method is particularly effective for catching pelagic species such as anchovies, tuna, and squid. This study evaluates the financial feasibility of operating bagan boat fishing gear in Bone Bay, South Sulawesi, through several key financial indicators, including Profit/Loss Analysis, Payback Period (PP), Net Present Value (NPV), and Revenue Cost Ratio (R/C Ratio). The analysis of the operational costs revealed total costs amounting to Rp 487,826,666, which include depreciation, maintenance, and operational expenses. The total revenue generated from the operation was Rp 951,243,999, resulting in a Revenue Cost Ratio (R/C ratio) of 1.95, indicating profitability. The Payback Period (PP) was calculated at 1.56 years, demonstrating a relatively quick return on investment. Additionally, the Net Present Value (NPV) was found to be Rp 1,078,386,238, confirming that the investment generates positive returns. Based on these findings, the operation of bagan boat fishing gear is deemed financially viable, profitable, and sustainable, with strong potential for future growth and development.
EFFECT OF DIETARY PROBIOTIC SUPPLEMENTATION ON GROWTH PERFORMANCE, SURVIVAL RATE, AND CONDITION FACTOR OF RED NILE TILAPIA (Oreochromis niloticus L.) Deni Aulia; Kurnia Sada Harahap; Artin Indrayati
Vol 15 No 2 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i2.1464

Abstract

Red Nile Tilapia (Oreochromis niloticus L.) is one of the important commodities in aquaculture, possessing high economic value and promising prospects for supporting the economy and food security. Various efforts have been made to increase fish production, one of which is through the use of feed additives. Probiotics have been widely used in aquaculture, either as a feed supplement or applied directly to the culture media. This study aims to compare the growth, survival rate, and condition factor of Red Nila Tilapia fed with probiotic-supplemented feed and those without probiotics. The study was conducted over 84 days using Red Nila Tilapia measuring 6.8 cm, stocked in earthen ponds at a density of 10 fish/m². The results showed that Red Nila Tilapia fed with probiotic-supplemented feed had a higher growth performance compared to those without probiotics. The average daily growth rate and survival rate of fish given probiotics were 2.06 g/day and 87%, respectively, whereas fish without probiotic supplementation had 1.70 g/day and 84%. Conversely, fish fed with probiotics exhibited a condition factor of 1.06, which was lower than the 1.69 recorded in fish without probiotics. The findings of this study indicate that probiotics can be used as a feed additive for Red Nile Tilapia, providing positive effects on growth, survival rate, and fish health.
Co-Authors Apri Mujiyanti Artin Indrayati Aulia Azka Basri Basri Bombongan Kusmedy Deni Aulia Mohammad Roin Najih Muh Suryono Muhammad Maskur Muhammad Sogirun Nirmala Efri Hasibuan Novi Luthfiyana Putri Wening Ratrinia Shiffa Febyarandika Shalichaty Sumartini Sumartini Sumartini