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AKTIVITAS ANTIOKSIDAN DAN ANTIBAKTERI SERTA IDENTIFIKASI FRAKSI KROMATOGRAFI …
Temu ireng (Curcuma aeruginosa Roxb.) is a medicinal plant from the Zingiberaceae family that is widespread in South Asia and Southeast Asia and has been reported to have antibacterial, anticancer, and antioxidant activities, especially in the rhizome. However, information on the antioxidant and antibacterial activities of fraction and isolated compounds is still limited. This study aims to ass…
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- xvi, 50 hlm.; ilus.; tab.; 29 cm
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- T1942222026
UJI AKTIVITAS ANTIOKSIDAN DAN ANALISIS KANDUNGAN KIMIA DARI FRAKSI AKTIF BATA…
ABSTRACT : Lenglengan (Leucas lavandulifolia) belongs to the Lamiaceae family. L. lavandulifolia is traditionally used in the treatment of headaches, migraines, rheumatism, and diabetes. Information on the activity and chemical content of L. lavandulifolia stems is still limited. The purpose of this study was to determine the antioxidant activity and chemical content of the most active column f…
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- xv, 79 hlm.; ilus.; tab.; 29 cm.
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- T1941052026
OPTIMASI DAN KARAKTERISASI PRODUK HYDROCRACKING PIROLISIS TANDAN KOSONG KELAP…
Oil palm empty fruit bunches (EFB) are an abundant lignocellulosic waste in Indonesia with significant potential as a renewable energy source. However, the liquid product obtained from EFB pyrolysis still exhibits drawbacks, including high oxygen content and low stability, thus requiring further upgrading. One effective method to improve the quality of the liquid product is hydrocracking using …
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- xi, 29 hlm.; ilus.; tab.; 29 cm.
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- T1941062026
POTENSI PENGEMBANGAN KULIT RAMBUTAN (Nephelium lappaceum L.) MENJADI SEDIAAN …
Rambutan peel (Nephelium lappaceum L.) is an organic waste that has the potential to be used as a source of natural antioxidants due to its high phenolic and flavonoid content. This study aims to determine the total phenolic and flavonoid content, antioxidant activity, and quality characteristics of rambutan peel tea. Rambutan peel samples were dried, ground, and brewed using hot water at 90 °…
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- xvi, 158 hlm.; ilus.; tab.; 29 cm.
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- T1941582026
UJI AKTIVITAS ANTIOKSIDAN EKSTRAK AIR SIMPLISIA DAUN SUNGKAI (Peronema canesc…
Sungkai leaves (Peronema canescens Jack.) have potential as a raw material for herbal tea and as a natural source of antioxidants. This study aimed to determine the total phenolic and flavonoid contents, antioxidant activity, and quality parameters of sungkai leaf simplicia tea compared with gambir leaf tea, soursop leaf tea, and commercial tea. The samples were dried, ground, and brewed using …
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- xvii, 131 hlm.; ilus.; tab.; 29 cm.
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- T1941382026
PERBANDINGAN KINERJA MEA PADA PEMFC YANG DIBUAT DENGAN METODE CATALYST COATED…
This study evaluates the performance and durability of Membrane Electrode Assembly (MEA) in Proton Exchange Membrane Fuel Cell (PEMFC) fabricated via Catalyst Coated Substrate (CCS) and Decal Transfer Method (DTM) using Kapton and PTFE substrates. The fabrication technique significantly impacts the catalyst layer structure and electrochemical properties. Characterization through Cyclic Voltamme…
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- xvi, 158 hlm.; ilus.; tab.; 29 cm.
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- T1940012026
PEMBUATAN KATALIS Ni-Fe/C DENGAN KOMPOSISI BERVARIASI MENGGUNAKAN METODE BALL…
The increasing global energy demand and environmental impacts of fossil fuels have driven the development of clean and sustainable energy sources. Hydrogen is a promising alternative due to its environmentally friendly nature and significant potential in future energy systems. Hydrogen production through water electrolysis using Proton Exchange Membrane Water Electrolysis (PEMWE) is efficient a…
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- xvii, 131 hlm.; ilus.; tab.; 29 cm.
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- T1939472026
UJI KINERJA DAN DAYA TAHAN MEMBRANE ELECTRODE ASSEMBLY (MEA) DENGAN KATALIS P…
The use of fossil fuels such as coal, petroleum, and natural gas, which have a negative impact on the environment, has encouraged the development of clean and sustainable renewable energy sources, one of which is hydrogen, which can be used as fuel in fuel cells to generate electrical energy. One type of fuel cell that has been widely developed is the Proton Exchange Membrane Fuel Cell (PEMFC),…
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- xvii, 52 hlm.; ilus.; tab.; 29 cm
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- T1938172026
SINTESIS BENTONIT/ZnO-GO UNTUK ADSORPSI ZAT WARNA METILEN BIRU
Methylene blue is a cationic dye. The reduction of methylene blue dye waste was carried out through an adsorption process. This study was conducted by activating bentonite and synthesizing bentonite/ZnO-GO as an adsorbent to remove methylene blue dye. The composite was synthesized using an ultrasonic method and its performance was evaluated based on variations in pH, concentration, adsorbent ma…
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- xvii, 85 hlm.; ilus.; 29 cm
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- T1905152025
SINTESIS BENTONIT-Fe3O4/GRAPHENE OXIDE UNTUK DEGRADASI ZAT WARNA METILEN BIRU
Methylene blue is a dye widely used in the textile industry due to its high photostability; however, its release into aquatic environments poses significant risks to aquatic organisms and human health. In this study, a Bentonite–Fe₃O₄/Graphene Oxide composite was synthesized for the degradation of methylene blue. The synthesis was carried out using ultrasonic-assisted and co-precipitation…
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- xviii, 94 hlm.; ilus.; 29 cm
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- T1889712025
HIDROLISIS SELULOSA DENGAN KATALIS BIOCHAR TERSULFONASI PADA VARIASI SUHU DAN…
ABSTRACT : Cellulose hydrolysis is the process of breaking down β-1,4 glycosidic bonds into glucose and its derivatives. The cellulose hydrolysis reaction can be accelerated by sulfonated biochar catalysts from oil palm empty fruit bunches (OPEFB) and coconut shells (CS). This study was conducted to determine the effect of temperature and catalytic time variations of sulfonated biochar hydroth…
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- xvii, 53 hlm.; ilus.; 29 cm
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- T1893182025
SINTESIS CaO DARI CANGKANG KERANG HIJAU DAN MODIFIKASI CaO MENGGUNAKAN SODIUM…
Penggunaan kerang hijau yang sangat banyak mengakibatkan limbah cangkang kerang hijau meningkat pesat. Cangkang kerang hijau digunakan sebagai bahan utama sintesis CaO dan modifikasi CaO/SDS. Modifikasi CaO dilakukan perbandingan berat CaO terhadap SDS yaitu (2:1) dan (1:1). Sintesis CaO menggunakan metode ekstraksi dan presipitasi. Adanya penambahan SDS berfungsi sebagai pencegah aglomerasi. H…
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- xv, 32 hlm.; ilus.; 29 cm
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- T1577332024
PENGARUH WAKTU ULTRASONIK DAN TEMPERATUR PEMANASAN TERHADAP KUALITAS OKSIDA G…
Grafena merupakan salah satu bentuk alotrop karbon yang memiliki sifat termal, listrik, katalitik, dan optik yang tinggi sehingga dapat digunakan dalam berbagai bidang. Grafena memiliki turunan berupa oksida grafena (GO) dan oksida grafena tereduksi (rGO). Oksida grafena disintensis menggunakan metode Hummer, serta oksida grafena tereduksi disintensis menggunakan metode reduksi multifase. Pada …
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- xii, 122 hlm.; ilus.; 29 cm
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- T1576902024
SPESIASI ION LOGAM KROM (III) DAN KROM (VI) PADA SEDIMEN DI SUNGAI OGAN MENGG…
Telah dilakukan penelitian spesiasi ion logam krom (III) dan krom (VI) menggunakan metode potensiometri sel konsentrasi. Tujuan penelitian untuk memvalidasi metode dan menentukan distribusi spesies ion logam krom (III) dan krom (VI) dalam sedimen. Metode potensiometri sel konsentrasi memiliki rangkaian alat berupa anoda dan katoda yang terhubung dengan jembatan garam KCl dan elektroda logam Cr.…
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- xv, 42 hlm.; ilus.; 29 cm
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- T1576312024
KONVERSI MINYAK JELANTAH MENJADI BIODIESEL MELALUI REAKSI ESTERIFIKASI DAN TR…
Konversi minyak nabati dapat dilakukan dengan metode elektrolisis sebagai metode alternatif. Tujuan konversi minyak bekas dengan metode elektrolisis untuk memproduksi biodiesel dengan memperhatikan kuat arus dan waktu reaksi. Sampel minyak bekas yang digunakan memiliki nilai asam lemak bebas (ALB) sebesar 0,379%. Reaksi esterifikasi dilakukan sebagai pretreatment sebelum melakukan reaksi transe…
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- xiv, 165 hlm.; ilus.; 29 cm
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- T1576952024
SPESIASI ION LOGAM CR(III) DAN CR(VI) PADA TANAMAN ECENG GONDOK (EICHHORNIA C…
Water hyacinth is a bioindicator plant that has high tolerance to metal pollutans concentration of Cr(III) and Cr(VI) metal ions species in Ogan river. Measurement of Cr(III) and Cr(VI) metal ions species has done using the concentration cell potentiometric method. This study aims to validated the method (linearity, precision, accuracy, LoD & LoQ). Applying the concentration cell potentiometric…
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- xiv, 165 hlm.; ilus.; 29 cm
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- T1576572024
PRODUKSI ENZIM PROTEASE DARI Bacillus licheniformis TS-8 PADA MEDIA TEPUNG BU…
Protease is an enzyme capable of breaking peptide bonds in proteins into peptides and amino acids. Thermophilic bacteria from B. licheniformis are known as one of the microorganisms that produce protease capable of degrading keratin with high activity and under extreme conditions. In this study, protease enzyme production and purification were carried out from Bacillus licheniformis TS-8 isolat…
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- xviii, 78 hlm.; ilus.; tab.; 29 cm
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- T1892982025
SINTESIS KOMPOSIT Fe3O4-SDS SEBAGAI ADSORBEN UNTUK ADSORPSI ZAT WARNA CONGO RED
Congo red dye is widely used in industry, one of them is textile industry. Congo red dye waste if it enters the environment without proper processing will cause environmental pollution. Fe3O4 and Fe3O4-SDS (1:1) composite were used for the adsorption of congo red dye by synthesizing using the coprecipitation method and characterized using XRD, FTIR, VSM and BET. The XRD characterization results…
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- xvii, 76 hlm.; ilus.; 29 cm
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- T1522512024
PENGARUH PERBANDINGAN BERAT SDS TERHADAP KINERJA KOMPOSIT Fe3O4-SDS UNTUK ADS…
The dye that is widely used in the textile industry is congo red dye which is carcinogenic and toxic to many organisms so that processing is needed. Fe3O4-SDS (2:1) and (2:3) composites were used as adsorbents in the adsorption of congo red dye by synthesis using the coprecipitation method and then characterized by XRD, BET, VSM and FTIR. The XRD characterization results of Fe3O4-SDS (2:1) and …
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- x, 73 hlm.; ilus.; 29 cm
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- T1522502024
AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL SABUT KELAPA (Cocos Nucifera Linn) TERHA…
Indonesia has abundant natural resources, especially in agriculture. One of its leading commodities comes from coconut plantations, Coconut is a versatile plant whose entire part can be utilized, including coconut fiber. Coconut fiber contains antibacterial compounds such as tannins, flavonoids, and polyphenols. This study aims to assess the antibacterial activity of ethanol extract of coconut …
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- xix, 72 hlm.; ilus.; tab, 29 cm
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- T1805182025
SINTESIS GRAFIT DARI LIGNIN HASIL ISOLASI LIMBAH TANDAN KOSONG KELAPA SAWIT M…
Grafit banyak dimanfaatkan dalam berbagai aplikasi industri, namun Indonesia masih sering mengimpor grafit sehingga diperlukan sumber alternatif. Lignin sebagai salah satu komponen dalam limbah tandan kosong kelapa sawit dan biasanya diabaikan, memiliki potensi dijadikan bahan baku sintesis grafit karena kandungan karbon yang tinggi. Proses isolasi lignin pada penelitian ini menggunakan metode …
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- xi, 78 hlm.; ilus.; 29 cm
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- T1521492024
SINTESIS NANOPARTIKEL PERAK (NPAg) MENGGUNAKAN EKSTRAK DAUN TUMBUHAN Antidesm…
Antidesma ghaesembilla or what is known locally as Sendulang has potential as a bioreductor in the synthesis of silver nanoparticles because it contains secondary metabolite compounds, one of which is flavonoids. A. ghaesembilla leaves have never been reported or studied for use as a bioductor in the synthesis of silver nanoparticles. Therefore, this research aims to synthesize silver nanoparti…
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- xv, 42 hlm.; ilus.; 29 cm
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- T1521612024
KARAKTERISASI RESERVOAR MENGGUNAKAN ATRIBUT SEISMIK PADA LAPANGAN “X” FOR…
Telah dilakukan penelitian mengenai uji aktivitas antihiperlipidemia ekstrak etanol daun kecipir (Psophocarpus tetragonolobus (L.) DC) pada tikus jantan wistar yang diinduksi diet tinggi lemak dan fruktosa. Tikus putih jantan galur Wistar dibagi menjadi enam kelompok yaitu normal, kontrol positif (simvastatin 0,9 mg/kgBB), kontrol negative (NaCMC 0,5%), dan tiga kelompok uji dengan dosis 100 mg…
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- xvii, 82 hlm.; ilus.; 29 cm
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- T1520752024
APLIKASI METODE POTENSIOMETRI SEL KONSENTRASI UNTUK ANALISIS LOGAM TEMBAGA (C…
Validation of the potentiometric cell concentration method and analysis of copper metal in Sekanak river water has been carried out. This research aims to validate the concentration cell potentiometric method in determining copper metal (Cu) in water and determining the distribution of copper metal (Cu) in Sekanak river water. Validation parameters in this study include calibration curve linear…
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- xvii, 82 hlm.; ilus.; 29 cm
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- T1589302024
PENENTUAN KADAR TOTAL FENOLIK, KADAR TOTAL FLAVONOID, AKTIVITAS ANTIOKSIDAN D…
Barringtonia acutangula or indian oak is a type of tree that are found in many swamps and river banks in Sumatera Selatan region. Determination of total phenolic content, total flavonoid content, antioxidant activity and toxicity of indian oak (Barringtonia acutangula) leaves extract was carried out. Extraction process was carried out by using increasing polarity maceration with n-hexane, ethyl…
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- xiii, 94 hlm.; ilus.; 29 cm
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- T1589292024
MODIFIKASI ALUMINA SILIKA DENGAN TEMPLATE KHFTALAT SEBAGAI PENGEMBAN LOGAM Ni…
The research was conducted on the modification of alumina silica using a KHPthalate template as a carrier of Ni-Mo metal for hydrocracking catalysts for crude palm oil (CPO) into biogasoline and bioavtur. The concentration variations used were 5% and 25% with the addition based on the ratio of alumina nitrate in the catalyst synthesis. The hydrocracking process was carried out at 350°C for 2 h…
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- xviii, 102 hlm.; ilus.; tab, 29 cm
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- T1886622025
INKORPORASI PATI KULIT PISANG KEPOK DALAM PEMBUATAN EDIBLE FILM TEPUNG SAGU U…
Edible film is a thin layer used as packaging that can be consumed together with food products. This study aims to create an edible film made from sago flour incorporated with kepok banana peel starch to increase the viability of Lactobacillus plantarum bacteria. The resulting edible film was analyzed for its physical and mechanical properties, then analyzed for resistant starch and bacterial v…
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- xviii, 97 hlm.; ilus.; tab, 29 cm
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- T1886132025
SINTESIS KOMPOSIT KITOSAN/GRAPHENE OXIDE-Fe2O3 DENGAN METODE KOPRESIPITASI UN…
The research about synthesis of chitosan/graphene oxide-Fe2O3 composite using the coprecipitation method for adsorption of methylene blue dye. This research was conducted to determine the ability of the chitosan/GO-Fe2O3 composite in adsorbing methylene blue dye. This composite were characterized using XRD, SEM-EDS, BET and applied in adsorbing methylene blue. The methylene blue adsorption proc…
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- xvii, 128 hlm.; ilus.; 29 cm
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- T1520382024
PENGARUH PERSENTASE BERAT KATALIS NI/C DAN TEMPERATUR PADA HYDROCRACKING PROD…
This study aims to determine the best operating conditions based on the effect of Ni/C catalyst weight percentage and temperature on hydrocracking of lignite coal pyrolysis products. The hydrocracking process was carried out using variations in catalyst weight percentage of 5, 10, 15, dan 20% also using temperature variations of 400, 450, 500, 550, and 600°C. Catalyst characterization was cond…
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- xiii, 49 hlm.; ilus.; 29 cm
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- T1520162024
PENGARUH TEMPERATUR PIROLISIS BATUBARA LIGNIT TERHADAP BERAT JENIS DAN KARAKT…
In this research, lignite coal is used as raw material for making coal oil. The method used is the pyrolysis method using temperature variations of 450-600°C. The coal oil resulting from pyrolysis was analyzed using GC-MS, %yield, specific gravity, and heating value. The optimal temperature obtained in the lignite coal pyrolysis process is 500°C. The results of GC-MS analysis showed that the …
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- xv, 130 hlm.; ilus.; 29 cm
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- T1519952024
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