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All Journal Jurnal Rekayasa Proses Reaktor JURNAL TEKNOLOGI LINGKUNGAN Jurnal Bahan Alam Terbarukan Eksergi: Chemical Engineering Journal JURNAL INTEGRASI PROSES Teknika: Jurnal Sains dan Teknologi Jurnal Agroekoteknologi Jurnal Teknika ALCHEMY Jurnal Penelitian Kimia Jurnal Rekayasa Proses Jurnal Teknik Kimia Indonesia Journal of Community Service in Science and Engineering Bulletin of Chemical Reaction Engineering & Catalysis

Jayanudin Jayanudin

Universitas Sultan Ageng Tirtayasa

Author-ID : 2856243

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Enkapsulasi dan Karakterisasi Pelepasan Terkendali Pupuk NPK Menggunakan Kitosan Yang Ditaut Silang Dengan Glutaraldehida Jayanudin Jayanudin; Retno Sulistyo D Lestari
ALCHEMY Jurnal Penelitian Kimia Vol 16, No 1 (2020): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Pelepasan terkendali pupuk NPK bertujuan untuk meningkatkan efisiensi penggunaan unsur hara tanaman dan juga untuk mengurangi pencemaran lingkungan. Penelitian ini bertujuan untuk menentukan pengaruh konsentrasi larutan kitosan dan glutaraldehida terhadap yield dan daya serap mikrokapsul pupuk NPK. Tujuan lain adalah menentukan karakterisasi dan analisis release pupuk NPK dari mikrokapsul dan juga menghitung kinetika release. Mikrokapsul pupuk NPK dipreparasi dengan mencampurkan pupuk NPK cair ke dalam larutan kitosan, kemudian campuran tersebutkan diteteskan ke dalam larutan glutaraldehida sambil diaduk. Mikrokapsul pupuk NPK yang terbentuk dicuci menggunakan petroleum eter dilanjutkan dengan heksana dan dikeringkan. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi larutan kitosan dan glutaraldehida menghasilkan peningkatan yield, menurunkan daya serap air, dan menurunkan pupuk NPK yang release dari mikrokapsul pupuk NPK. Model kinetika release yang sesuai berdasarkan tingginya nilai R2 adalah model order satu dan model Higuchi didapat dari mikrokapsul pupuk NPK yang dipreparasi dengan 1% (b/v) larutan kitosan dan 5% (v/v) larutan glutaraldehida. Encapsulation and Characterization of Controlled Release of NPK Fertilizer Using Glutaraldehyde-Crosslinked Chitosan. Controlled release NPK fertilizer aims to improve the nutrient use efficiency (NUE) of plants and also to reduce environmental pollution. This study aims to determine the effect of the concentration of chitosan and glutaraldehyde solutions on the yield and absorptive ability of NPK fertilizer microcapsules. Another objective was to determine the characterization and analysis of NPK fertilizer releases from microcapsules and also to calculate the release kinetics. NPK fertilizer microcapsules were prepared by mixing liquid NPK fertilizer into a chitosan solution, and then the mixture was dripped into a glutaraldehyde solution while stirring. NPK fertilizer microcapsules formed were washed using petroleum ether, followed by hexane and dried. The results showed that an increase inthe concentration of chitosan and glutaraldehyde solutions resulted in an increase in yield, decreased water absorbency, and lower NPK fertilizer released from microcapsules. The appropriate release kinetics models based on the higher R2 value were the first-order model and the Higuchi model obtained from microcapsules of NPK fertilizer that was prepared with 1% (w/v) chitosan solution and 5% (v/v) glutaraldehyde solution.

Persamaan Empiris Sederhana untuk Memprediksikan Ukuran Partikel dari Enkapsulasi Oleoresin Jahe Merah Jayanudin Jayanudin; Rochmadi Rochmadi; Moh. Fahrurrozi; Sang Kompiang Wirawan
ALCHEMY Jurnal Penelitian Kimia Vol 14, No 2 (2018): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.14.2.17076.178-192

Tujuan penelitian ini adalah menentukan persamaan empiris dari bilangan tak berdimensi untuk memprediksikan ukuran mikrokapsul oleoresin jahe merah. Metode enkapsulasi yang digunakan adalah crosslink emulsi dengan kitosan sebagai penyalut dan glutaraldehyde saturated toluene (GST) sebagai agen crosslink. Oleoresin jahe merah dan kitosan dengan konsentrasi 1, 2, 3 dan 4% (w/v) diaduk dengan kecepatan 10.000 rpm untuk membentuk emulsi, kemudian dimasukan dalam minyak jagung dan diaduk kembali untuk membentuk emulsi kedua. Sebanyak 10 mL glutaraldehyde saturated toluene (GST) sebagai agen crosslink ditambahkan secara bertahap. Setelah itu, ditambahkan larutan glutaraldehida 25% dan terus diaduk selama 2 jam. Mikrokapsul dipisahkan dan dicuci dengan petroleum eter dan heksan, kemudian dikeringkan dalam oven dengan suhu 70 °C. Dengan cara yang sama digunakan untuk membuat mikrokapsul pada kecepatan pengadukan 5.000, 8.000 dan 15.000 rpm. Ukuran diameter mikrokapsul dianalisis menggunakan mikroskop digital. Persamaan empiris dari bilangan tak berdimensi Reynolds (Re) dan Ohnesorge (Oh) dibuat untuk memprediksikan diameter mikrokapsul. Data dari variabel perubahan konsentrasi kitosan dan kecepatan pengadukan dapat menghasilkan persamaan empiris dari bilangan Reynolds (Re) dan Ohnesorge (Oh). Konstanta yang dihasilkan adalah = 422,06, = 0,37 dan = -0,18. Berdasarkan perbandingan antara data diameter penelitian dan hasil perhitungan didapat % kesalahan sebesar 8,05% untuk pengaruh konsentrasi kitosan dan 7,52% untuk pengaruh kecepatan pengadukan.A Simple Empirical Equation for Predicting Particle Size from Encapsulation of Red Ginger Oleoresin. This study aims to determine the empirical equations of the dimensionless number to predict the diameter size of red ginger oleoresin microcapsules. The encapsulation method used is crosslinking emulsion with chitosan as coating and glutaraldehyde saturated toluene (GST) as a crosslinking agent. Red ginger oleoresin and chitosan with concentrations of 1, 2, 3 and 4% (w/v) were stirred at 10,000 rpm to form emulsions, and then added to the corn oil and stirred again to form a second emulsion. The 10 mL of glutaraldehyde saturated toluene (GST) as a crosslinking agent was added gradually. After that, a 25% glutaraldehyde solution was added and stirred for 2 hour. Microcapsules were separated and washed with petroleum ether and hexane, then dried in an oven at a temperature 70 °C. The same step, the microcapsules were made at stirring speed of 5,000; 8,000; and 15,000 rpm. The size of the microcapsule diameter was analyzed using a digital microscope. The empirical equations of the dimensionless numbers Reynolds (Re) and Ohnesorge (Oh) are made to predict the microcapsule diameter. The data from the chitosan concentration change and stirring speeds could produce the empirical equations of the Reynolds and Ohnesorge numbers. The resulting constants were = 422.06, = 0.37 dan = -0.18. By comparing the data diameter of the research and calculation results obtained % error of 8.05% for the influence of chitosan concentration and 7.52% for the effect of stirring speed.

THE INFLUENCE OF COATING MATERIAL DIFFERENCE AGAINST ENCAPSULATION EFFICIENCY OF RED GINGER OLEORESIN Jayanudin Jayanudin; Rochmadi Rochmadi; M. Kemal Renaldi; Pangihutan Pangihutan
ALCHEMY Jurnal Penelitian Kimia Vol 13, No 2 (2017): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

The purpose of this study was to determine the effect of different coating materials on the efficiency of red ginger oleoresin encapsulation and characterization of microcapsule surface. The encapsulation process begins by dissolving chitosan with 1 % (v/v) acetic acid and dissolving sodium alginate using aquadest to be used as a coating material. Red ginger oleoresin alginate included in the solution was stirred. The mixture entered into the chitosan solution and added tween 80 was stirred using a homogenizer to emulsify. The emulsion that forms included in the spray dryer to be converted into a powder of microcapsules, and then analyzes the encapsulation efficiency and surface morphology of microcapsules using scanning electron microscopy (SEM). Differences in the coating material used were chitosan, mixture of chitosan-alginate and mixture of chitosan-alginate-sodium tripolyphosphate (STPP). Weight ratio of red ginger oleoresin and the coating material were 1: 1, 1: 2 and 1: 3. The research results obtained were the highest encapsulation efficiency obtained from the coating material of the chitosan-alginate-sodium tripolyphosphate (STPP) at a ratio of 1: 3, namely by 85 %.

Co-Authors A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Adi Winata Ahmad Imanudin Ahmad Suhendi Aldi Fathurohman Ali Hafid Supriatna Alia Badra Pitaloka Anellysha Putri Apriantika Anggoro, Dendy Vito Artika Sari Septiaziz Ayu Zakiyah Lestari Azzahra, Atina Sabila Barleany, Dhena Ria Chatarina Umbul Wahyuni Dandi Irawanto Dandi Irwanto Denni Kartika Lestari Denni Kartika Sari Denni Kartika Sari Devi Nuraini M Dewi, Heny Puspita Diki Suhendar Edi Mikrianto Endang Suhendi Endang Suhendi, Endang Endrian Harzuli Fakhri Muhammad Fakhri Muhammad Feni Nurbayanti Gustiana Awaludin Sobarsah Hafid Alwan Harly Demustila Hary Sulistyo Indar Kustiningsih Iqbal Syaichurrozi Iryanti Fatyasari Nata, Iryanti Fatyasari Jauharotul Uyun Kiky Corneliasari Sembiring Kustiningsih, Indar Lestari, Retno Sulistyo D. Listiyani Nurwindya Sari M. Kemal Renaldi Marta Pramudita Maulana Suyuti Maulana Suyuti Meri Yulvianti Moh. Fahrurrozi Moh. Fahrurrozi Mohammad Fahrurrozi Mohammad Fakhrurozi Muhammad Luthfi Nicken Ayoe Fajrianto Nuryoto Ofi Shofiah Pangihutan Pangihutan Pitaloka, Alia Badra R Rochmadi Rahmayetti Rahmayetti Reta Pujinia Retno Hadi Winoto Retno S.D. Lestari Retno Sulistyo D Lestari Retno Sulistyo Dhamar Lestari Retno Sulistyo Dhamar Lestari Reyonaldo Langgeng Adi Wardana Reyonaldo Langgeng Adi Wardana Rizkina Ika Aryana Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rodiansono Rodiansono Rozak Bahaudin Rozak Rozak Rudi Hartono Ruhiatna, Adam Saepurahman Saepurahman Sang Kompiang Wirawan Selfira Arum Andadari Seta Dewo Sunnardianto, Gagus Ketut Teguh Kurniawan Tri Rina Sari Wahyu Budi Setiawan Yulianto, Amin Yulvianti, Meri

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