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All Journal International Journal of Public Health Science (IJPHS) Jurnal Teknoin Diponegoro Law Journal Lentera Hukum JURNAL LITIGASI (e-Journal) Jurnal Teknik Kimia Jurnal technoscientia Jurnal Teknologi Seminar Nasional Teknik Kimia Kejuangan Journal of Environmental Engineering and Sustainable Technology Brawijaya Law Journal : Journal of Legal Studies Journal of SouthEast Asian Human Rights Politik Indonesia: Indonesian Political Science Review Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Serambi Engineering International Journal of Community Service Learning Dharma Bakti Wiyata Dharma: Jurnal Penelitian dan Evaluasi Pendidikan International Journal of Marine Engineering Innovation and Research JURNAL TEKNOLOGI TECHNOSCIENTIA Prosiding SNAST ADMA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Pancasila: Jurnal Keindonesiaan Jurnal Ilmiah Mahasiswa Manajemen, Bisnis dan Akuntansi Indonesia Law Review (ILREV) Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Kimia dan Rekayasa Jurnal Inovasi Proses Jurnal Hukum dan Pembangunan Jurnal Teknologi Jnanadharma Mores: Jurnal Pendidikan Hukum, Politik dan Kewarganegaran
Ani Purwanti
Institut Sains Dan Teknologi Akprind
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KOEFISIEN TRANSFER MASSA PADA EKSTRAKSI ANTOSIANIN DARI BUNGA DADAP MERAH Purwanti, Ani; Sumarni, Sumarni; Parjoko, Anom
Jurnal Teknik Kimia Vol 10, No 2 (2016): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v10i2.538

Abstract

Pigmen antosianin merupakan senyawa berbentuk glikoksida yang menimbulkan warna merah, biru, dan violet yang terdapat dalam tanaman. Salah satu sumber antosianin yang banyak terdapat di Indonesia adalah bunga dadap merah. Antosianin telah memenuhi persyaratan sebagai zat pewarna makanan tambahan, karena tidak menimbulkan kerusakan pada bahan makanan dan bukan merupakan zat yang beracun bagi tubuh. Pengambilan pigmen antosianin dalam bunga dadap merah dilakukan dengan ekstraksi secara batch dengan labu leher tiga yang dilengkapi pengaduk, thermometer, pendingin balik, dan penangas air. Ekstraksi 10 gram bunga dadap merah (kandungan air 20,31%) dilakukan pada suhu 55 0C dan pengadukan dengan menggunakan pelarut etanol teknis yang dikombinasikan dengan penambahan larutan asam klorida maupun dengan penambahan asam sitrat. Penelitian ini bertujuan untuk mengambil zat warna antosianin dari bunga dadap merah dan menentukan koefisien transfer massa. Ekstraksi yang menggunakan pelarut etanol (96%) sebanyak 100 mL dan dikombinasikan dengan larutan asam klorida encer (1%) sebanyak 1 mL, menghasilkan antosianin terekstrak sebesar 0,1012 mg/10 g, pada waktu 2,5 jam dengan koefisien transfer massa (kla) 0,01162 det-1. Nilai tersebut lebih besar dibanding dengan ekstraksi menggunakan etanol yang ditambahkan asam sitrat 1,2 gram (volume pelarut 101 mL), menghasilkan antosianin terekstrak sebesar 0,0843 mg/10g, pada waktu 3 jam dan koefisien transfer massa (kla) sebesar 0,00629 det-1.
PIROLISIS LIMBAH PANGKAL BAMBU MENJADI KARBON AKTIF DAN ASAP CAIR MENGGUNAKAN ZAT AKTIVATOR ASAM PHOSFAT Purwanti, Ani
Jurnal Teknologi Technoscientia Vol 9, No 2 (2017): Vol 9 No 2 Februari 2017
Publisher : IST AKPRIND YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

An inefficient utilization of bamboo resulted in bamboo base as waste withouteconomical value. Converted this bamboo waste becomes active carbon throughpyrolysis will add more value of the product. This study aims to determine the parameterswhich influence the pyrolysis of bamboo waste, to determine the activity of the obtainedactive carbon and liquid smoke yield. The preparation of raw material was conducted bycutting the bamboo into the size of an average length of 4.33 cm, 1.43 cm wide, and 0.48cm high, also analyzed the water content. Pyrolisis was done for 60 minutes in the rangeof temperature between 250°C to 450°C. Activation methods varied by soaking in dilutedphosphoric acid solution (6-14%) prior to pyrolysis with variations in dipping time andtemperature pyrolysis. Yield and reactifity of obtained active carbon and also yield ofliquid smoke were analyzed. With 100 gram of raw material, 60 minutes of reaction time,and activation for 24 hr resulted in an optimum yield of active carbon 27,43% withreactivity 433,99 mg/g under 12% of phosphoric acid solution at 450°C, and the yield ofliquid smoke was 54 mL. GC-MS results showed that acetic acid (30.33%) as a majorcomponent, while 2-propanone (14,34%), methanol (10,37%), 2-butanone (3,75%),acetaldehyde (3,59%), furfural (2,95%), corylon (2,21%), cyclopropyl carbinol (2,11%),phenol (2,1%), glycol (1,85%), dan carbonic acid (1,28%) as a minor component.
PENGARUH PROSES EKSTRAKSI BERTEKANAN DALAM PENGAMBILAN LIPID DARI MIKROALGA JENIS NANNOCHLOROPSIS SP. DENGAN PELARUT METANOL Purwanti, Ani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 2 Februari 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (815.368 KB) | DOI: 10.34151/technoscientia.v7i2.197

Abstract

Microalgae is one of the raw material for biodiesel. Recently, microalgae oil is developed as an alternative fuels to substitute fossil fuels. Lipid was extracted from microalgae and then it was used to produce biodiesel. In this study, the development extraction process is the main issues to investigate the optimum condition. In this research, to get the maximum yield of lipid from microalgae the extraction used an autoclave with high pressure. The microalgae used has water content of 5%, 50%, and 80%. Extraction of 20 gram dried microalgae using 200 mL of methanol as a solvent was carried out in an autoclave at various of pressure (25 psi, 45 psi, 65 psi, and 75 psi). The extraction process was varied from 30 minutes up to 120 minutes. The lipid and methanol was separated from microalgae as biomass by filtration, then the mixture was distilled to separate lipid from methanol as a solvent. The extracted lipid was weighted to determine the yield of lipid. The optimum lipid extraction yield (31.02% as mass of lipid/mass of dried microalgae), was obtained under the following extraction conditions: 200 mL methanol/ 20 gram dried microalgae for 120 minutes processing in 45 psi of process pressure.
OPTIMASI KOEFISIEN TRANSFER MASSA PADA EKSTRAKSI MINYAK BIJI KETAPANG Purwanti, Ani; -, Sumarni; -, Sugiyanto
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 2 No 2 Februari 2010
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.063 KB) | DOI: 10.34151/technoscientia.v2i2.433

Abstract

Mass transfer between solid and liquid is commonly found in extraction process. Oil extraction from catappa seeds was carried out in the stirred flask using normal hexane as a solvent. The aim of this research is to show a dimensionless equation of a Sherwood number {/} as a function both of Reynolds number {/} and Schimdt number {/}. The experiment was conducted in the room temperature, around 290C, stirring speed 500 rpm, blade diameter 2 cm, and the ratio between the mass of catappa seeds and the volume of solvent was 20 gr/100mL–20 gr/200 mL. The calculation error was 0.072%. Based on the research, it is found that Sh = 0,2166.106 . Re-1,506. Sc1,120.
OPTIMASI KONDISI PROSES PENGAMBILAN ASAM ALGINAT DARI ALGA COKLAT Purwanti, Ani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 5 No 2 Februari 2013
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.859 KB) | DOI: 10.34151/technoscientia.v5i2.533

Abstract

Seaweed is a marine product that has been widely used as a food ingredient. In addition, seaweed can also produces carrageenan and alginate which is an important compound in the industry. It is important to know the influential factors and the optimum process conditions to get the maximum alginate yield. In this study, it is to be obtained the optimum process conditions of taking alginate from brown algae (Sargassum cymosum). The seaweed powder was analyzed the water content and the ash content. To get alginate, this material is soaking in acid and to be extracted. It is continued with the process of gel formation and the process of conversion of alginic acid to sodium alginate to obtain dry Na-alginate. The variabel of the experiments are variation of the concen-tration and immersion time in hydrochloric acid solution, the variation of temperature, time, and concentration of sodium carbonate solution that used in the extraction process, the influence of the degree of acidity of the deposition process of alginic acid into alginic acid gel. The optimum conditions that obtained are the immersion time in 0.5M of hydro-chloric acid is 90 minutes, the extraction process conditions are 400C for 90 minutes with the sodium carbonate concentration 0.5 M. The solution acidity of the deposition rate is 3.
OPTIMASI KONDISI PROSES EKSTRAKSI MINYAK BIJI PEPAYA Yuniwati, Murni; Purwanti, Ani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (146.657 KB) | DOI: 10.34151/technoscientia.v1i1.382

Abstract

The papaya (Carica papaya L.) is a member of the small class dycotyledoneae, family caricaceae, and genus cariaca. This plant is native to the Central America and West Indies. It grows well at the tropical region with elevation 600-700 m above the sea level. Today papaya seed is only throwed away as a waste product, whereas in fact the papaya seed contains fatty acids with higher economic value which is called papaya oil. Oil of papaya seed can be obtained from solid - liquid extraction method. In this investiga-tion, the extraction of papaya seed was carried out in the stirred reactor with ethanol as a solvent. Solvent-extracted oil was distilled to separate papaya seed oil from solvent. The variables of investigation were extraction temperature, stirring speed, ratio between sol-vent volume and mass of papaya seed, and size of papaya seed. The extracted oil was a-nalyzed by using gas chromatography to determine the fatty acid composition. The opti-mum condition of papaya seed extraction were obtained at extraction temperature 300C, stirring speed 397 rpm, ratio between solvent volume and mass of papaya seed at 25 : 1, and size of papaya seed (-14/+20) mesh or average diameter 0.08 cm. The correlation between mass transfer coefficient and these variables is shown in the dimensionless e-quation below : Sh = 8,89 (10)5 Re(0,7785). Sc 0,9411.With the average error is 0.9706%.
PENGARUH SUHU PROSES TERHADA P SINTESIS ALKYD RESIN DARI DAUN KEMANGI (OCIMUM BASILICUM) SEBAGAI BAKAL BINDER PEMBUATAN CAT Paparingan, Theodorus Cahyo; Pasaribu, Dony Syamsuddin Halomoan; Qoyyim, Fatah Ibnul; Purwanti, Ani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 12 No 1 Agustus 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.098 KB) | DOI: 10.34151/technoscientia.v12i1.1825

Abstract

Alkyd resin are an example of a polymer product formed by the condensation polymerization process. Alkyd has great value when modified with natural oils or synthesis (triglycerides). This study aims to determine the effect of temperature on the mechanical properties of alkyd resin. The research process consists of 4 stages: the extraction process, the distillation process, the alcoholysis reaction and the esterification reaction. The study began by extracting essential oils from dried basil leaves. Extraction is done using n-hexane solvent which will be removed in the distillation process. The alcoholysis begins by reacting basil essential oil with glycerin in a volume ratio of 1:5 at 180oC. Then the esterification step is carried out by mixing phthalic anhydride into a batch reactor with a molar ratio of glycerol:phthalic anhydride 3:2. Then analyze aspects of viscosity, acid numbers, iodic numbers, and colors. The results obtained in the analysis showed a process temperature of 180oC more effectively used for further research processes because of the compatibility of the results with the alkyd resin reference value. The results obtained are 189516 cP viscosity, acid number 6,83935 mg/g, iodic number 1,8935 mg/g, and a dark yellow color.
EVALUASI PROSES PENGOLAHAN LIMBAH KULIT UDANG UNTUK MENINGKATKAN MUTU KITOSAN YANG DIHASILKAN Purwanti, Ani; Yusuf, Muhammad
Jurnal Teknologi Vol 7 No 1 (2014): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Abstract

Udang merupakan hasil perikanan yang bernilai ekonomis tinggi. Dalam pengolahannya menghasilkan limbah yang berupa kepala, kulit, dan ekor udang yang dapat didayagunakan sebagai bahan baku penghasil kitin, kitosan, dan turunannya yang bernilai tinggi. Kitosan banyak digunakan dalam industri kosmetik, pelarut lemak, pengawet makanan, dan juga sebagai edible film. Untuk menghasilkan kitosan dilakukan proses ekstraksi kitin yang kemudian dilanjutkan dengan proses deasetilasi kitin. Pengolahan limbah kulit udang untuk menghasilkan kitin melalui beberapa tahapan proses yaitu proses demineralisasi dan deproteinasi. Mutu kitin yang dipakai untuk menghasilkan kitosan juga sangat mempengaruhi karakteristik kitosan yang digunakan. Aplikasi kitin dan kitosan sangat dipengaruhi oleh karakteristik keduanya, yaitu karakter derajat deasetilasi, kelarutan, viskositas, dan berat molekulnya. Dalam penelitian ini dilakukan peningkatan karakteristik kitin dengan mengoptimalkan proses demineralisasi dan deproteinasi untuk meningkatkan mutu kitosan yang dihasilkan yang ditinjau dari karakter rendemen yang dihasilkan, kelarutan, derajat deasetilasi, viskositas, dan berat molekulnya dengan cara melakukan proses perebusan pendahuluan sebelum dilakukan proses demineralisasi dan deproteinasi dan juga melakukan pengacakan urutan proses pembuatan kitin yaitu proses demineralisasi kemudian diikuti proses deproteinasi dan juga proses deproteinasi yang diikuti dengan proses demineralisasi. Penelitian dilakukan dengan mengolah limbah kulit udang kering melalui proses perebusan, proses deproteinasi menggunakan larutan NaOH, proses demineralisasi menggunakan larutan HCl, dan dilanjutkan dengan proses deasetilasi menggunakan larutan NaOH. Keseluruhan proses dijalankan dalam rangkaian alat labu leher tiga yang dilengkapi dengan pengaduk, pemanas, dan pendingin balik. Hasil reaksi yang berupa kitosan dinetralkan dan dikeringkan yang selanjutnya dilakukan analisa untuk menentukan karakter kitosan yang dihasilkan. Hasil penelitian yang diperoleh memperlihatkan bahwa proses perebusan kulit udang secara keseluruhan dapat meningkatkan kualitas kitosan yang dihasilkan. Urutan proses demineralisasi, deproteinasi pada pembuatan kitosan dari limbah udang tidak begitu menunjukkan perbedaan signifikan dilihat dari kitosan yang dihasilkan. Proses perebusan mampu meningkatkan kelarutan kitosan dalam larutan asam asetat 1% secara signifikan.
EVALUASI KINETIKA REAKSI PEMBUATAN ALUMINIUM HIDROKSIDA DARI TAWAS DAN AMONIUM HIDROKSIDA Purwanti, Ani
Jurnal Teknologi Vol 10 No 1 (2017): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Abstract

Aluminium hidroksida mempunyai banyak kegunaan dalam bidang industri, misalnya di industri keramik, industri kosmetik dan lain-lain, yang dalam prosesnya menggunakan bahan – bahan tersebut. Aluminium hidroksida merupakan hasil reaksi antara tawas dengan NH4OH dalam labu leher tiga dengan suhu tertentu, sambil dilakukan pengadukan konstan, setelah waktu yang diinginkan tercapai, endapan diambil lalu disaring untuk memisahkan filtratnya, kemudian endapan tersebut dikeringkan dalam oven pada suhu 1100C sampai beratnya konstan. Endapan yang telah dikeringkan diambil, sebagian untuk dianalisis kadar aluminiumnya untuk dapat mengetahui konversinya. Pada penelitian ini bahan yang digunakan adalah 25 g tawas yang telah dihaluskan dan 75 mL NH4OH 21 % dengan kecepatan pengadukan 600 rpm, pada suhu 55 0C (suhu tertinggi pada penelitian ini), sehingga diperoleh nilai konstanta kecepatan reaksi 2,31 x 10-4 ml-1/menit dan merupakan reaksi orde dua (orde satu terhadap Al2(SO4)3 dan orde satu terhadap NH4OH ).
PENGARUH PROSES EKSTRAKSI BERTEKANAN DALAM PENGAMBILAN LIPID DARI MIKROALGA JENIS NANNOCHLOROPSIS SP. DENGAN PELARUT METANOL Purwanti, Ani
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 2 Februari 2015
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v7i2.197

Abstract

Microalgae is one of the raw material for biodiesel. Recently, microalgae oil is developed as an alternative fuels to substitute fossil fuels. Lipid was extracted from microalgae and then it was used to produce biodiesel. In this study, the development extraction process is the main issues to investigate the optimum condition. In this research, to get the maximum yield of lipid from microalgae the extraction used an autoclave with high pressure. The microalgae used has water content of 5%, 50%, and 80%. Extraction of 20 gram dried microalgae using 200 mL of methanol as a solvent was carried out in an autoclave at various of pressure (25 psi, 45 psi, 65 psi, and 75 psi). The extraction process was varied from 30 minutes up to 120 minutes. The lipid and methanol was separated from microalgae as biomass by filtration, then the mixture was distilled to separate lipid from methanol as a solvent. The extracted lipid was weighted to determine the yield of lipid. The optimum lipid extraction yield (31.02% as mass of lipid/mass of dried microalgae), was obtained under the following extraction conditions: 200 mL methanol/ 20 gram dried microalgae for 120 minutes processing in 45 psi of process pressure.
Co-Authors A Halim Abdul Aziz Abdullah Dedi R Achmad Fauzi Achmad Thesa Widhaswara Ade Alvian A Ahmad Daudsyah Imami Anak Agung Putu Susastriawan Arbintarso, Ellyawan Setyo Azizah, Rifka Noor Bagoes Widjanarko Budi Ispriyarso Busro, Ahmad Dion Awfa Edo Barlian Eka Sulistyaningsih Eka Sulistyaningsih Emy Setyaningsih Endri Santoso Fauziah, Muna Fitri Riyadi Fitria, Laili FX Adji Samekto FX. Adji Samekto I Wayan Koko Suryawan Ikhwali, Muhammad Faisi Imami, Ahmad Daudsyah Istiqomah Shariati Zamani Janter Pangaduan Simanjuntak Jarot Wijayanto Kadek Cahya Susila Wibawa Khasanah, Rahayu Laksmi Indreswari Lusi Ariani Maria Egenia Vivian Eksi Putri Mispiyanti, Mispiyanti Moh Salimi Muchlis Muchlis mUH. Afif Mahfud Muhammad Yusuf Muhammad Yusuf Mukasi Wahyu Kurniawati Muklis Muklis Murni Yuniwati, Murni Murniati, Yunita Nadia Alviyati Natalis, Aga Novita Setyawati Novrianty, Irma Nur Novilina Arifianingsih Nur Rochaeti, Nur Nur Rochaety, Nur Pangestu, Muhammad Puri Dwi Panjaitan, Nahesson Hotmarama Paparingan, Theodorus Cahyo Parjoko, Anom Pasaribu, Dony Syamsuddin Halomoan Permadi, Pongky Prabowo, Fajar Yulianto Pratama, Galuh Prasetio Prayoga, Yudi Prayogo, Wisnu Purnawan Purnawan Putri Lynna A. Luthan Putri, Fayreizqi Azellea Mashanda Qoyyim, Fatah Ibnul Rachmat Mulyana Rahayu Khasanah Ratna Hidayah Rian Adhivira Prabowo, Rian Adhivira Rifka Noor Azizah Rizki Putri Sekarini Rofifah, Salma Putri Salamor, Yonna Beatrix Septiariva, Iva Yenis Setiawan, Fajar Ahmad Siswandi Waluyo Sitepu Amrina Rosyada Sri Rahayu Gusmarwani, Sri Rahayu Sri Sunarsih Sri Sunarsih Subarkah Suci Musvita Ayu Sugiyanto - Sulistyaningsih, Eka Sumarni - Sumarni - Sumarni - Sumarni Sumarni Sumarni Sumarni Suparni Setyoawati Rahayu Suparni Setyowati Rahayu Suryawan, I Wayan Koko Teddy Asmara Tetty Br. Sitohang Tri Saptuti Susiani Triantono, Triantono Vemi Ridantam Wibowo, Ribut Hari Wijaningsih, Dyah Wisnu Prayogo Wisnu Prayogo Yuli Purwanto, Yuli Zahroh Shaluhiyah