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All Journal Jurnal Ilmu Pertanian Indonesia FORUM STATISTIKA DAN KOMPUTASI Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Kimia (Journal of Chemistry) International Journal of Renewable Energy Development SAINS DAN MATEMATIKA JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Lingkungan The Journal of Pure and Applied Chemistry Research agriTECH INDONESIAN JOURNAL OF PHARMACY Indonesian Journal of Chemical Science Indonesian Journal of Chemistry Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Jurnal Ilmiah Pesantren Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Ilmu Kefarmasian Indonesia Jurnal Jamu Indonesia Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Media Agribisnis RESEARCH AND DEVELOPMENT JOURNAL OF EDUCATION (RDJE) Jurnal Pengabdian Polinema Kepada Masyarakat Prosiding Seminar Nasional Sasindo Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Dinamika Kesehatan: Jurnal Kebidanan dan Keperawatan
Mohamad Rafi
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Bogor
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Analisisi Pendapatan Dan Nilai Tambah Usaha Ayami Ras Pedaging (Studii Kasus : UD. Alhamdulillah) Ikrar Mohammad Saleh; Amrullah Amrullah; Muhammad Darwis; Putra Astaman; Muhamad Noor Azizu
Media Agribisnis Vol 5 No 2 (2021): November
Publisher : Program Studi Agribisnis, Fakultas Pertanian, Universitas Muhammadiyah Buton

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35326/agribisnis.v5i2.1658

Abstract

Tujuan penelitian ini untuk menganalisis biaya, penerimaan, ipendapatan, efisiensiiusaha, dan nilai tambah pada lembaga ayam rasi pedaging di UD. Alhamdulillah pasari Daya Kota Makassar. Analisa data menggunakan statistik deskriptif yaitu analisisi pendapatan dani nilai tambah metodei hayami. Hasil menunjukkan terdapat tiga lembaga pemasaran yaitu UD. Alhamdulillah, Pedagang Pengecer Pemotong, dan Pedagang Pengecer. Pendapatan masing-masing lembaga pemasaran adalah UD. Alhamdulillah Rp. 99.980.472/periode, Pedagang Pemotong Pengecer Rp. 241.652.306/periode, dan Pedagang Pengecer Rp. 99.007.956/periode. Nilai tambah yang diperoleh tiap lembaga pemasaran di UD. Alhamdulillah antara lain; lembaga yang memiliki nilai tambah tertinggi adalah Pedagang pengecer Rp. 16.681,00/ekor (tingkat keuntungan 55,94%). Sedangkan Lembaga pemasaran yang memperoleh keuntungan tertinggi adalah UD. Alhamdulillah Rp. 13.165,46/ekor (tingkat keuntungan 78,36%).
Geographical classification of Java Tea (Orthosiphon stamineus) from Java Island by FTIR Spectroscopy Combined with Canonical Variate Analysis Mohamad Rafi; Edy Djauhari Purwakusumah; Taopik Ridwan; Baba Barus; Atang Sutandi; Latifah Kosim Darusman
JURNAL SAINS DAN MATEMATIKA Volume 23 Issue 1 Year 2015
Publisher : JURNAL SAINS DAN MATEMATIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (645.469 KB)

Abstract

FTIR spectroscopy combined with canonical variate analysis was used for differentiation of java tea (Orthosiphon stamineus) according to their geographical origin. FTIR spectra of all java tea samples were acquired in the mid infrared region (wavenumber range 4000-400 cm-1). Preprocessing signal of FTIR spectra has been carried out prior to canonical variate analysis by standard normal variate. Combination of FTIR spectra in the region 1800-900 cm-1with canonical variate analysis has the power to differentiate java tea samples in terms of geographical origin. The developed method could be used for identification of geographical origin of java tea based on the samples used in this study.
Pengoptimuman Kondisi Adsorpsi Cd(II) oleh Adsorben Berbasis Silika Termodifikasi Glisina Menggunakan Central Composite Design Lisa Aprilia Indriyani; Zulhan Arif; Roza Linda; Henny Purwaningsih; Mohamad Rafi
Jurnal Kimia Sains dan Aplikasi Vol 22, No 5 (2019): Volume 22 Issue 5 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3234.437 KB) | DOI: 10.14710/jksa.22.5.184-191

Abstract

Silika gel (SG) merupakan salah satu jenis adsorben yang umum digunakan pada eksraksi fase padat untuk prakonsentrasi. Berhubung SG memiliki selektivitas dan efektivitas adsorpsi yang rendah terhadap ion logam, maka silika perlu dimodifikasi. SG dimodifikasi dengan d-glisina (Si-Gly) menggunakan 3-aminopropiltrimetoksisilana dan glutaraldehida sebagai penaut silang. Kemampuan Si-Gly sebagai adsorben ion kadmium (Cd) dipelajari dengan metode adsorpsi batch. Hasil modifikasi dibuktikan dengan spektrum inframerah. Kondisi optimum adsorpsi Cd dengan Si-Gly diperoleh pada pH 5, dengan bobot adsorben 0,3 g, dan waktu kontak 11 menit. Persentase adsorpsi Cd pada kondisi optimum oleh Si-Gly (99,34%) lebih besar daripada oleh SG (89,03%). Kapasitas adsorpsi maksimum Si-Gly terhadap Cd(II) ialah 9,77 mg/g yang diperoleh pada konsentrasi 400 mg/L. Pola adsorpsi SG dan Si-Gly terhadap Cd(II) mengikuti model isoterm Langmuir.
Discrimination of cassava, taro, and wheat flour using near-infrared spectroscopy and chemometrics Mohamad Rafi; Sifa Awalul Fikriah; Rifki Husnul Khuluk; Utami Dyah Syafitri
Jurnal Kimia Sains dan Aplikasi Vol 23, No 10 (2020): Volume 23 Issue 10 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1886.409 KB) | DOI: 10.14710/jksa.23.10.360-364

Abstract

There is a difference in the selling price for cassava, taro, and wheat flour, with taro flour having a higher price. It could be a reason for adulterating the taro flour from the other two flours and reducing quality. This study aims to distinguish the three types of flour using the near-infrared (NIR) spectra combined with chemometrics. The NIR spectra of all samples were measured at a wavelength of 1000-2500 nm. The multivariate analysis used was principal component analysis (PCA), and PCA followed with discriminant analysis (DA). The preliminary process of the signal using area normalization was carried out before the multivariate analysis. The PCA results showed that most of the samples were grouped in their respective groups except for two samples, namely 1 sample of taro flour and 1 sample of cassava flour. Meanwhile, the PCA-DA results using seven main components showed that the three samples were grouped well. DA validation was carried out using the cross-validation method, showing that the samples could be identified into their respective groups. Therefore, a combination of NIR spectrum and chemometric analysis can be used to differentiate cassava, taro, and wheat flour
Co-Authors A. Wahyuningrum Abdul Rohman Abdul Rohman Abdul Waris Adi Novriansyah Agus Jatnika Effendi Agus Mohamad Soleh Alfi Hudatul Karomah Ali Miftahudin Allen Kurniawan Amalia Yunita Amrullah Amrullah Antonio Kautsar Aryo Tedjo Asefin Nurul Ikhtiarini Atang Sutandi Auliatifani, Reza Auliya Ilmiawati Baba Barus Bambang - Riyanto Bambang Prajogo Eko Wardoyo Cahya Septyanti Cecep Abdurohman Putra Derry Permana Dewi Anggraeni Septaningsih Dewi Pusparani Sinambela Dien Atin Boritnaban Djoko Santosa Dyan Fitri Nugraha E. Rohaeti Edy Djauhari Purwakusumah Edy Djauhari Purwakusumah Edy Djauhari Purwakusumah Esti Mumpuni Eti Rohaeti Fadila Karunina Fifi Gus Dwiyanti Hanifullah Habibie Henny Purwaningsih Herdiyanto Herdiyanto Heriyanto Syafutra Ikrar M. Saleh Indah Mutiara Ningtyas Razaad Irma Herawati Suparto Irmanida Batubara Irnawati Irnawati ISKANDAR ZULKARNAEN SIREGAR Khaydanur, Khaydanur Khoirotul Muzayanah L. K. Darusman Latifah K Darusman Latifah K Darusman Latifah K. Darusman Latifah K. Darusman Latifah Kosim Darusman Latifah Kosim Darusman Latifah Kosim Darusman Latifah Kosim Darusman Lee Wah Lim Liliek Nurhidayati Lisa Aprilia Indriyani Lusi Royani M. Agung Zaim Adzkiya Maeda Wahyuningrum Makmum Syafi’i Maya Melati Muhamad Insanu Muhamad Noor Azizu, Muhamad Noor Muhammad Bachri Amran Muhammad Fuad Zaini Muhammad Majiidu Nancy Dewi Yuliana Nanik Siti Aminah Neliwati Nengsih, Nunuk Kurniati Nita Hestiyana Nurameylia Rasaidi Nurhajawarsi Nurhajawarsi Nurmaida Nurmaida Nursifa Mawadah Partomuan Simanjuntak Parwito Purnomo, Tsania Firqin Putra Astaman Putri Vidiasari Darsono R. Heryanto Rifki Husnul Khuluk Rita K Sari Rizka Wildani Rizky Kurniawan Murtiyanto Rizna Azrianiningsari Roza Linda Roza Linda Roza Yusfiandayani Rudi Heryanto Sandra Arifin Aziz Septaningsih, Dewi Anggraini Setyaningsih, Widiastuti Shinta Maharani Trivena Sifa Awalul Fikriah Siti Norazian Ismail Slamet Ari Dwi Ratnanto SUMINAR SETIATI ACHMADI Suyanti Natalia Syamsudin Abdillah Syamsudin Abdillah Syifa Muflihah Taopik Ridwan Tatik Raisawati Toyohide Takeuchi Tun Tedja Irawadi Umi Khabibah Usman Ahmad Utami Dyah Safitri Utami Dyah Syafitri Waras Nurcholis Widia Citra Anggundari, Widia Citra Wina Yulianti Wisnu Ananta Kusuma Wulan Tri Wahyuni Wulansari, Laela Yanuar Chandra Wirasembada Yashinta Fitriani Yulita Suyatmika Zulhan Arief Zulhelmi Aziz Zulliati Zulliati