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All Journal Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Teknologi Pertanian EDUCARE: Journal of Primary Education JURNAL REKAYASA KIMIA & LINGKUNGAN
Izza, Ni'matul
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Mechanical Engineering Social Sciences

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STUDI EKSPERIMENTAL INKUBATOR TENAGA SURYA TIPE PANEL PELAT DATAR DENGAN EFEK TERMOSIPON Al Riza, Dimas Firmanda; Damayanti, Retno; Izza, Ni'matul
Jurnal Teknologi Pertanian Vol 16, No 3 (2015)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Inkubator telah banyak dimanfaatkan untuk berbagai macam proses seperti penetasan telur dan proses lain yang memerlukan ruang dengan suhu terkendali umumnya pada sekitar 40 °C. Penggunaan inkubator yang relatif lama memerlukan jumlah energi yang cukup besar. Penggunaan energi surya sebagai sumber energi alternatif untuk inkubator akan memberikan hasil berupa penggunaan energi yang lebih murah dan lebih bersih. Pada penelitian ini telah dilakukan studi mengenai potensi pemanfaatan tenaga surya dengan tipe panel pelat datar untuk inkubator. Prinsip aliran fluida alami dengan efek termosipon digunakan untuk meminimalisir penggunaan energi tambahan seperti pompa. Panel surya dapat bekerja dengan baik pada kondisi cuaca normal dengan temperatur maksimum mencapai lebih dari 60 °C. Efek termosipon dapat terjadi dengan perbedaan temperatur minimum sekitar 10 °C. Perbedaan temperatur maksimum yang diamati dari performansi kerja panel surya yakni 22.7 °C. Rekomendasi untuk sistem kontrol dan menajemen energi diberikan berdasarkan fenomena yang diamati dari hasil eksperimen.
Extraction of Phenolic Compounds from Cosmos caudatus Using Pulse Electric Field (PEF) Izza, Ni'matul; Dewi, Shinta Rosalia; Putranto, Angky Wahyu; Yuneri, Dian R; Dachi, Maria Yeniaska S.
Jurnal Teknologi Pertanian Vol 17, No 2 (2016)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Kenikir (Cosmos caudatus) merupakan tumbuhan yang banyak terdapat di Indonesia. Selama ini kenikir hanya dimanfaatkan sebagai sayuran atau lalapan, padahal daun kenikir mempunyai kandungan kimia yang mempunyai sifat antioksidan, antibakteri, dan dapat digunakan sebagai obat. Senyawa fenolik merupakan salah satu senyawa dalam daun kenikir yang mempunyai sifat antioksidan. Antioksidan merupakan senyawa yang berpotensi untuk melawan oksidan berbahaya yang dapat merusak sel tubuh. Pada penelitian ini dilakukan ekstraksi senyawa fenolik daun kenikir dengan Pulse Electric Field (PEF). Proses ekstraksi dilakukan dengan variasi rasio bahan: pelarut yaitu 1:4, 1:6, dan 1:8. Sedangkan waktu pemaparan PEF yang digunakan adalah 3, 6, 9, 12 detik. Hasil penelitian menunjukkan total fenol dan aktivitas antioksidan tertinggi didapatkan pada ekstraksi dengan rasio bahan:pelarut 1:8 selama 6 detik yaitu 65.27 mg GAE/g fw dan 70.74%.
The Effect of Temperature Cooking of Sugar Juice and Stirring Speed on The Quality of Brown Sugar Cane Dewi, Shinta Rosalia; Izza, Ni'matul; Agustiningrum, Dyah Ayu; Indriani, Dina Wahyu; Sugiarto, Yusron; Maharani, Dewi Maya; Yulianingsih, Rini
Jurnal Teknologi Pertanian Vol 15, No 3 (2014)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Research of the effect of cooking temperature and stirring speed on the quality of brown sugar cane were processed by vacuum vertical evaporator have been done. Brown sugar cane produced from purified green cane juice. The purification was done with addition of Ca(OH)2. Pure juice cooked with cooking temperature of 60, 70, and 80 oC, and the stirring speed of 200 and 250 rpm. Brown sugar cane was analyzed for color, moisture content, ash content, sucrose, and organoleptic test (hedonic quality test for color, flavor, and texture of hardness). The results showed that the higher of cooking temperature, the better the quality of color, flavor, and hardness brown sugar cane produced. While the higher stirring speed, lower moisture content of brown sugar, so the hardness of brown sugar was better. Besides effect of cooking temperature and stirring speed, quality of brown sugar cane was affected by the quality of cane juice and juice purification process. Good quality of cane juice will produce high yield, low moisture content, high sucrose, and good color, flavor, and hardness. The best result was obtained on brown sugar cane produced by cooking temperature of 70 oC and stirring speed of 250 rpm, which was obtained yield of 8.23%, sucrose of 75.37%, hardness of 4.52 kg/cm2, bright and high color intensity of brown sugar cane.Keywords: cane sugar, vacuum evaporator, brown sugar, stirring, cooking temperature
Correlation of Memory Ability with Learning Outcomes Students at Elementary School Izza, Ni'matul; Zanah, Wardah Tul; R, Putri Utami; AM, Ahmad Giri
EDUCARE: Journal of Primary Education Vol. 4 No. 1 (2023): EDUCARE: Journal of Primary Education
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan Universitas Islam Negeri Kiai Haji Achmad Siddiq Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35719/educare.v4i1.196

Abstract

This study aims to examine the correlation of students' memory skills to the mathematics learning outcomes of fourth grade students at SDN Jurumudi 4, Tangerang city. The method used is quantitative correlation. The data analysis technique uses a significance of 0.05 with a prerequisite test consisting of a normality test, linearity test, hypothesis testing (product moment person correlation and correlation coefficient significance test with the t test). The results of this study: (1) students' memory skills through descriptive statistical analysis found that there were 32 students in grade IV C at SDN Jurumudi 4 Tangerang city with an average memory score of 81.09 in the high category. (2) The learning outcomes of students in class IV C at SDN Jurumudi 4 Tangerang city in learning mathematics about fractional material equal to the number of students as many as 32 people with an average score of 76.31 in the high category. (3) The results of hypothesis testing through inferential statistics show that there is a correlation between students' memory skills and the mathematics learning outcomes of fourth-grade students at SDN Jurumudi 4, Tangerang City, with a correlation coefficient (r) of 0.429 and sig.0.014. It can be seen from the table of the level of correlation and the strength of the relationship. between the two variables is at the magnitude of 0.40-0.599 indicating that there is a moderate or sufficient correlation. Furthermore, to test the hypothesis using the correlation coefficient significance test with the t test and the results obtained are tcount > ttable (2.601 > 2.042) the hypothesis is accepted.
Fine-Tuning Temulawak (Curcuma xanthorrhiza Roxb) Extraction: Solvent Selection, Methodological Approaches, and Optimization on Operating Condition Korleone, Jorgi; Mufidah, Elya; Argo, Bambang Dwi; Sidauruk, Jocelyn Latreia Ronauli; Takase, Hayato; Izza, Ni'matul
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 12 No. 3 (2024): December 2024
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2024.012.03.03

Abstract

Temulawak (Curcuma xanthorrhiza Roxb) is rich in bioactive compounds: phenols and flavonoids, working as antioxidants to counteract free radicals in the human body, in which appropriate extraction methods and solvents are required to obtain the total phenol and flavonoid content from this plant. Correlating to this, Response Surface Methodology (RSM) provides an analytical framework based on mathematical models to determine the conditions of optimal temulawak extraction. The study, therefore, aims to identify the best extraction method and solvent for extracting phenolic and flavonoid compounds from temulawak, to subsequently utilize the method in determining the optimal temulawak extraction conditions based on RSM using DesignExpert12 software. The results signify the best combination of extraction method and solvent is demonstrated by microwave-assisted extraction (MAE) using 70% ethanol. Additionally, the software showed that a solvent-to-material ratio of 66mL/g, with extraction power of 450 watts, and extraction time of 1 minute are required to perform the extraction under optimal conditions, resulting a total phenolic content (TPC) of 12.93±1.43 mg GAE/g dw and a total flavonoid content (TFC) of 21.79±0.98 mg QE/g dw through the verification process.
Anti-biofoulan Alami Moringa oleifera Sebagai Bahan Pengisi Membran Mixed Matrix Selulosa Asetat untuk Klarifikasi Jus Buah Wibisono, Yusuf; Faradilla, Ashried; Utoro, Panggulu Ahmad; Sukoyo, Agung; Izza, Ni'matul; Dewi, Shinta Rosalia
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 2 (2018): Jurnal Rekayasa Kimia & Lingkungan (December, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i2.11053

Abstract

Teknologi membran banyak digunakan dalam pemisahan padatan terlarut dalam cairan, termasuk dalam pengolahan pangan misalnya klarifikasi jus buah. Namun salah satu faktor penghambat utama penggunaan membran adalah terjadinya fouling yang berpotensi menurunkan kualitas produk. Dalam proses klarifikasi jus buah, membran berpotensi mengalami fouling karena material biologis. Antibiofoulan alami seperti biji buah kelor Moringa oleifera berpotensi untuk digunakan sebagai agen pencegah biofouling pada proses membran karena mengandung fenol. Pada penelitian ini diketahui kandungan total fenol ekstrak bji kelor sebesar 123.61 mg/g ekstrak. Ekstrak ditambahkan sebagai bahan pengisi dengan konsentrasi yang berbeda pada larutan cetak membran selulosa asetat dengan pelarut dimetil formamida yang berfungsi sebagai matrix. Morfologi membran mixed matrix yang dihasilkan berupa pori-pori yang berbentuk jari dan masuk dalam kategori membran mikrofiltrasi. Kinerja membran diuji kekuatan mekaniknya, nilai fluks, dan sifat antibakteri menggunakan E-coli. Penambahan ekstrak biji kelor pada mampu memberikan dua keuntungan, yaitu menghambat pertumbuhan bakteri sebesar 39.7% dan menurunkan permeabilitas dari 1765.25 L/m2.jam.bar menjadi 1235.5231 L/m2.jam.bar yang berpotensi meningkatkan tingkat rejeksi membran mikrofiltrasi yang dihasilkan.
Co-Authors AM, Ahmad Giri Angky Wahyu Putranto Bambang Dwi Argo Dewi Maya Maharani Dian R Yuneri, Dian R Dimas Firmanda Al Riza Dina Wahyu Indriani Dyah Ayu Agustiningrum, Dyah Ayu Faradilla, Ashried Korleone, Jorgi Maria Yeniaska S. Dachi, Maria Yeniaska S. Mufidah, Elya R, Putri Utami Retno Damayanti Rini Yulianingsih Shinta Rosalia Dewi, Shinta Rosalia Sidauruk, Jocelyn Latreia Ronauli Sukoyo, Agung Takase, Hayato Utoro, Panggulu Ahmad Yusron Sugiarto Yusuf Wibisono Zanah, Wardah Tul