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All Journal JURNAL ECONOMIA JURNAL PEMBANGUNAN DAN KEUANGAN DAERAH JURNAL EMBA : JURNAL RISET EKONOMI, MANAJEMEN, BISNIS DAN AKUNTANSI BERKALA FISIKA Techno.Com: Jurnal Teknologi Informasi Abdimas KONSELI: Jurnal Bimbingan dan Konseling (E-Journal) Jurnal Akuntansi Multiparadigma Journal of Nonformal Education JURNAL LPPM BIDANG EKOSOSBUDKUM Jurnal Ilmiah Teknik Industri Jurnal Terapan Abdimas Riset Akuntansi dan Keuangan Indonesia Sumatra Journal of Disaster, Geography and Geography Education AFRE Accounting Financial Review JMBI UNSRAT (Jurnal Ilmiah Manajemen Bisnis dan Inovasi Universitas Sam Ratulangi) KACANEGARA Jurnal Pengabdian pada Masyarakat JUTIM (Jurnal Teknik Informatika Musirawas) Jurnal Teknologi Informasi MURA JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) JURNAL AKUNTANSI DAN MANAJEMEN MUTIARA MADANI Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Jurnal Caksana: Pendidikan Anak Usia Dini KOLOKIUM: Jurnal Pendidikan Luar Sekolah Pedagogia: Jurnal Ilmiah Pendidikan Dasar Indonesia JGCI STAND : Journal Sports Teaching and Development Perspektif Akuntansi JUSTIAN - Jurnal Sistem Informasi Akuntansi Kaisa: Jurnal Pendidikan dan Pembelajaran Empowerment Society Indonesian Journal of Multidisciplinary Science Society: Jurnal Pengabdian Masyarakat Arif: Jurnal Sastra dan Kearifan Lokal Innovative: Journal Of Social Science Research Jurnal RAK (Riset Akuntansi Keuangan) Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesian Journal of Early Childhood Educational Research West Science Social and Humanities Studies Jurnal Penelitian Pendidikan Indonesia Jurnal Akuntansi Inovatif KHIDMAT SOSIAL Jipmas : Journal Inovasi Pengabdian Masyarakat LINGUISTS : JOURNAL OF LINGUISTICS AND LANGUAGE TEACHING
Sri Murni
Universitas Sam Ratulangi Manado
Aerospace Engineering Arts Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Journal : BERKALA FISIKA

 1 
DETEKSI DINI KUALITAS MINYAK GORENG DAN STUDI AWAL TINGKAT KEHALALANNYA MENGGUNAKAN POLARISASI ALAMI Eva, Yulianti; Indriyani, Y; Husna, A; Putri, N Kharisma; Murni, Sri; Amitasari, Ria; Putranto, Ari Bawono; Sugito, Heri; Firdausi, K Sofjan
BERKALA FISIKA 2014: Berkala Fisika Vol. 17 No. 3 Tahun 2014
Publisher : BERKALA FISIKA

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Abstract

In this paper, we investigate natural light polarization for preliminary test of quality and authentication (halal) level of frying oil. Recently standard methods used are usually based on Indonesian National Standard (SNI), however all parameters are very difficult to be determined simultaneously. On the other hands even the test is time consumed, inexpensive, complicated and also preliminary treatments required, which is a major problem in era of rapid information need. One of an alternative solution is to use natural light polarization method. In the experiment, several vegetable frying oils and animal oils are used to be tested. The change of polarization angle is used to indicate the level of oil quality and its authentication. The result shows that higher polarization indicates lower oil quality relative to the others, which is in agreement to the previous study. This method is, not only, able to differentiate various edible vegetable oils, but also to distinguish edible oils and expired oils. More over, it has a prospect to indicate an authentication of oil that is a subject of a halal or not-halal case.This method is relative simply, not time consumed, conducted accurately without any previous treatments, and it provides a good prospect as a preliminary test for oil quality and its authentication. Keywords: Natural polarization, oil quality, halal or authentication level
PEMANFAATAN SIFAT OPTIS AKTIF ALAMI UNTUK KENDALI MUTU MINYAK GORENG MENGGUNAKAN LAMPU PIJAR Asy Syifa, A Y; Nisa, Fathia; Prasanti, Irvani D; Murni, Sri; Firdausi, K Sofjan
BERKALA FISIKA Vol 16, No 2 (2013): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

In this study the properties of natural optical activity of the various vegetable cookingoils was used as a new method for a quality control and was proposed as a new prospect forpreliminary test of oil quality. The samples used were various packaging cooking oil obtained inthe shops and were considered already fulfilled by SNI. The source of light to illuminate was a75W light-bulb. The change of the polarization angle of light was measured using polarizer basedon Malus’ law, and it was used to indicate the levels of oil quality degradation. The experimentalresult shows that highest change of polarization angle indicates relative lowest quality of oils. Anolive oil shows the best oils relative from other types of vegetable oils. The natural polarization inthis case is able to differentiate between various types of oil, and to distinguish fresh oil andexpired oil. It seems that natural polarization accommodates some contributed components oflevel of degradation of oil quality, i.e. free fatty acid and saturated fat. This method provides someadvantages, such as, simple equipments, a fast test, without preliminary treatment, and accurateresults. For the future, it shows a reliable test to conduct as a previous quality control for cookingoil and replaces the role of conventional, expensive standard methods. This method offers also achallenge to evaluate the level of authentication or halal of oils and fats.Keywords: oil quality, polarization angle, optical activity.
SIFAT ELEKTROOPTIS SEBAGAI PARAMETER INDIKASI MUTU BERBAGAI JENIS MINYAK GORENG KEMASAN Murni, Sri; Firdausi, K Sofjan; Hidayanto, Eko; Bawono P, Ari
BERKALA FISIKA Vol 15, No 4 (2012): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Abstract In this paper, we introduce the change of polarization angleβ induced by external electric field, as a quality indication of several edible oils without preliminary treatment. The averagevalue ofβ in the interval of applied potential difference plays important role as level of number offree radicals produced in the edible oils. The samples used were olive oil, extra olive oil, palm oil,and corn oil. Theβ value was obtained by measurement of the change polarization angle as the function of magnitude the electric field on the samples. The electric field was produced by DCvoltage power supply on two parallel plates in a separated distance of 2.5 cm and in area of 5 cm× 3 cm. The source of light used was He-Ne laser 1 mW (λ=633 nm). The experiment result showsthat for all the fresh frying oil samples the polarization angle has value between 2.3× 10/V and3.3× 10-4 0/V in the experimental condition. The extra olive oil has the smallest value while palmoil has the greatest. According to the previous study, the olive oil is relatively the best oil.Keywords: frying oil, electrooptics, polarization angle
EVALUASI KUALITAS BEBERAPA JENIS MINYAK GORENG KEMASAN SETELAH DIPANASKAN MENGGUNAKAN SIFAT ELEKTROOPTIS Murni, Sri; Bawono Putranto, Ari; Hidayanto, Eko; Firdausi, K Sofjan
BERKALA FISIKA Vol 16, No 3 (2013): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

In this report, we have determined the average value of polarization angle for various edible oils, before and after heating. The change of polarization angle was measured averagebetween potential differences 0-9 kV. The heating time for the samples was conducted up to 10 hours at average temperature by 180°C. The source of light was He-Ne Laser 1 mW (633 nm) with optical length of samples of 1 cm. In agreement to the previous experiment, our result shows that all vegetable oils provide increasing of free radicals indicated by increasing polarizationangle for longer heating time. For the heating time interval 0-10 hours, the level degradation ofoil rises quadratically. From various edible oils, olive oil is still the relative best quality from allsamples in this experiment. This method, once again, shows more powerful relative to otherstandard methods.Keywords: frying oil, electrooptics, polarization angle
Co-Authors A Husna, A A Y Asy Syifa Abdul Latif Adiguna, Irena Neysa Afifah, Atik Alan Pridibyo Moha Alfian Meykel Lioew Amanda Amanda Ambarwati Ambyah Harjanto, Ambyah Amelia, Chairunnisa Amperawati, Endang Dwi Anna Anna, Anna Annisa Marsela, Annisa Apriyanti, Aan arengkuan Tommy Ari Bawono P Ari Bawono Putranto Bambang Suroso Bandi Bandi, Bandi Biru, Rembulan Catra Banyu Boby Rantow Payu Buddike, W Dinesh Bulantika, Siti Zahra Cai Cen, Cia Celviana Winidyaningrum, Celviana Christoforus Adhitya Sondakh Citra Perwati Silalahi Daisy Engka David P.E Saerang Debby Christina Rotinsulu Decky Adare Dedi Saputra Dedy N. Baramuli Desmita Desmita Dingkol, Mohamad S. E. Djemly, Woran Djoko Sri Bimo Djuminah Djuminah, Djuminah Dolongseda, Adrianus E Donny Oktavianus, Donny Dwi Prasetyani, Dwi Edi Kurniadi Eko Hidayanto Eko Rizki Zakaria Era, Era Erni Erni Eva Meilinda Fadliyan Ahmad Fahmi Ilyas Fahmi Julianto, Muhammad Fathia Nisa Ferdy Roring Fhadila, Ambar Fiki Prayogi Fitri, Gita Galih Dwi Pradipta Hanita, Margaretha Hartoko, Sri Hasan, Fuad Nur Hasanah, Mei Dina Iswatun Hasyim, Mutawakil Heri Sugito Hisjam, Muhammad Ika, Siti Rochmah Ilham, Agus Indri, Indrian Supheni Indrian Supheni Irvan Trang Irvani D Prasanti Ismaniar Ismaniar Ivonne S Saerang Ivonne S. Saerang Jantje L. Sepang Johan R. Tumiwa, Johan R. Johan Tumiwa Joy Elly Tulung Jusuf, Zahwa Annisa Juwantara, Ridho Agung K Sofjan Firdausi Kadir, Ade Laksito Kamboja, Yasman Kampongsina, Cynthia E. Karlinadewi, Novi Rahayu Kartika Handayani Keintjem, Vici A. Kereh, Claudio Kharisma Diyenti, Adella Kolamban, Dea V. Korompis, Ria R. N. Kosasih, Nia J. Lakoro, Alfiansyah Lalu, Reykard S. M. Rudianto, M M. Saifuddin Zuhri, M. Saifuddin Maikel Sanger Mailangkay, Priscilia P. U Manopo J. H. Maramis, Joubert B. Mareyke Jessy Tanod Mareyke Jessy Tanod, Mareyke Jessy Maria Ulfa Maria Yustina Rensi Dartani Maryam Mangantar Massau, Appolos Mawar Sharon R. Pantow Mawey Z. Alfa, Mawey Z. Mongdong, Virgina Monoarfa, Afrian Muhamad Taqi, Muhamad Muhammad Iqbal Muhammad Shofiyuddin Muthalib, Safira N Kharisma Putri, N Kharisma Naiema, An Naas Shahifatun Nasedum, Meyssi I. Nikmah, Rinneke Fadhillatul Nino, Yunaningsih Nur Hazizah Octaria, Dini Olivia Mada Rolos Olpah, Hermiliani Padanun, Mitha P. Pandu Kresnapati Pangumpia, Alsye Wise Paninggiran, Meylisa Panny Agustia Rahayuningsih Parengkuan Tommy Paulina Van Rate Paulina Van Rate Poyoh, Christin Marciah Puspita Sari, Rizka Rahman, Irhamni Rahmawati , Rahmawati Rahmawati, Rahmawati Rahmi Novalita Raimond Tandris Raja Sabaruddin Rantung, Yelisa Rate, Paulina V Rate, Paulina V. Rezki, Muhammad Ria Amitasari Rifangga Tengor, Rifangga Rika I.K.A. Mantiri, Rika I.K.A. Rimonda, Rubi Rindorindo, Rocky P. Rizka, Muhammad Dany Rizki, Dhira Rizky Rurniawan Ano Rogi, Mirah Rohwiyati Rohwiyati Rondonuwu, Patricia J. Rudianto, M Rumengan, Jibrina Rumokoy, Lawren J. Rumokoy, Lawren Julio Rusli, Adi Saputra Sabaru, Tyara D. Safitri Linawati Salsabila, Putri Sanjali, Sarwan Sante, Zevanya Vaneca Santi Santi Sardi Sardi Sari, Permata Sari, Rizka Puspita Sarwoto Sarwoto, Sarwoto Setianingtyas Honggowati SETIYO UTOYO Seventi P, Ignatia Sri Siampa, Mario Sientje C. Nangoy Silcyljeova Moniharapon Silvianetri, Silvianetri Siti Arifah Siti Nurdiani Siti Nurlaela Siti Supeni Sri Mulyani Sri Suranta, Sri Sri Wahyuni Anggraini Kamal, Sri Wahyuni Anggraini Sudrajat, Ignatius Suprih Suhaila, Arina Sumbodo, Bernadus Tresno Sumendap, Ribka R. Surniya, Surniya Susan Sumampow, Susan Susanti, Asri Diah Switli Repi, Switli Taliwuna, Meiky T. Tampi, Beyvie C. Tangkulung, Eunike Gita Tasik, Hizkia H.D. Tauke, Putri Yuliana Tewu, Chintia Bunga Santalia Tewuh, Nigita E. Tumonggor, Mutiara Udjaili, Firah Damayanti Ulum, Irfannul Vera Sri Endah Cicilia Wahyu Nugraha Wahyu Yulianto Ranti, Wahyu Yulianto Warsina, Warsina Watopa, Elviliana Y. Wensen, Nindri Widagdo, Ari Kuncara Widowati, Annisa Rahmadhika Winarna, Jaka Winston Pontoh Wismumpuni, Sidiq Wisriati Laim, Wisriati Wolff, Octavia Regina Worang, Frederick G. Y Indriyani, Y Yonggara, Yoliana Yova, Fika Yulianti Eva, Yulianti Yunita Mandagie Zahra Bulantika, Siti Zalukhu, Rika Surianto Zulfahmi, Muhammad Nofan