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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
Uji Aktivitas Antioksidan dan Penetapan Kadar Flavonoid Total dan Fenolik Total Ekstrak Sidaguri (Sida rhombifolia L.) Asma Asma; Abdul Rohman; Djoko Santosa; Mohamad Rafi; Nanik Siti Aminah; Muhamad Insanu; Irnawati Irnawati
Journal of Food and Pharmaceutical Sciences Vol 10, No 2 (2022): J.Food.Pharm.Sci
Publisher : Institute for Halal Industry and System (IHIS) Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfps.4955

Abstract

Sidaguri atau Sida rhombifolia L. telah digunakan oleh masyarakat sebagai obat tradisional, yaitu: penghilang rasa nyeri, radang, asam urat, penyakit kuning, muntah darah, dan sakit gigi. Faktor yang mempengaruhi produksi kandungan metabolit sekunder adalah kondisi lingkungan seperti tempat tumbuh, iklim, interaksi intra dan inter-spesifik serta waktu panen. Penelitian ini bertujuan untuk mengetahui aktivitas antioksidan serta kadar flavonoid dan fenolik total ekstrak sidaguri berdasarkan tempat tumbuh. Sampel diekstraksi dengan ultrasonic-assisted extraction (UAE) dan diuji penangkapan radikal bebas menggunakan metode 2,2’-difenil-1-pikrilhidrazil (DPPH) dan 2,2’-azino-bis(3-diethyl4benzothiazoline-6-sulfonic acid) (ABTS), serta penetapan kadar flavonoid total dan kandungan fenolik total. Hasil uji aktivitas antioksidan sidaguri dari Cangkringan dan Ngemplak memiliki aktivitas antioksidan tertinggi baik pada metode penangkapan radikal DPPH dengan nilai IC50 masing-masing sebesar 0,400±0,004 dan 0,403±0,004 mg/mL, maupun metode ABTS dengan nilai TEAC masing-masing sebesar 40,733±0,240 dan 35,598±0,153 mg/g serbuk sidaguri, dengan kadar flavonoid total masing-masing sebesar 10,095±0,068 dan 12,066±0,025 mg/g serbuk sidaguri dan kadar fenolik total masing-masing sebesar 56,45±0,068 dan 31,502±0,025 mg/g serbuk sidaguri.
Tetracera scandens as a Medicinal Plant: Secretory Structures, Histochemistry, and Antibacterial Activity Evi Muliyah; Sulistijorini Sulistijorini; Yohana Cecilia Sulistyaningsih; Mohamad Rafi
Journal of Tropical Life Science Vol. 8 No. 1 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.08.01.12

Abstract

Tetrascera scandens, a member of Dilleniaceae, is used for traditional medicine; the stem is utilized by the Anak Dalam tribe of Jambi Province, Sumatera island, Indonesia, to treat diarrhea symptoms. The aims of this study were to identify the secretory structures, histochemical aspects, and the antibacterial potency of T. scandens stem. Histological study of the secretory structures of T. scandens stem was carried out. The species has idioblast cells and trichomes as its secretory structures. Histochemical analysis indicated the substance secreted by T. scandens idioblast cells mainly contains alkaloids, terpenoids, and phenols. Trichomes of T. scandens only contain flavonoids. The antibacterial activity of methanol extracts was tested against Staphyllococcus aureus and Escherichia coli. Different concentration of extracts was tested using the well diffusion method. According to the results, 100 mg/mL T. scandens extract showed the best inhibitory activity with a maximum inhibition zone of 17.7 mm against S. aureus and of 12.5 mm against E. coli. This study provides scientific evidence that the stem of T. scandens has antibacterial activity and justifies its use by the local community.
Antioxidant Capacity, Phytochemical Profile, and Clustering of Pomegranate (Punica granatum L.) Peel Extracts Using Different Solvent Extraction Mohamad Rafi; Laela Wulansari; Dewi Anggraini Septaningsih; Tsania Firqin Purnomo; Reza Auliatifani; Khaydanur Khaydanur; Auliya Ilmiawati; Wina Yulianti; Nunuk Kurniati Nengsih; Irma Herawati Suparto; Wisnu Ananta Kusuma
Journal of Tropical Life Science Vol. 11 No. 3 (2021)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.11.03.14

Abstract

Pomegranate has valuable nutritional content and contains various bioactive compounds, one found in the fruit's peel. The utilization of these bioactive compounds could be used as herbal medicines and supplements, such as antioxidants. This study aimed to determine the antioxidant capacity, phytochemical profile, and pomegranate peel extract grouping using different extracting solvents. The three extracting solvents used were water, 70% ethanol, and ethanol p.a. Antioxidant capacity of the three extracts was measured using the DPPH and CUPRAC methods. We also determined the total phenolic and flavonoid levels and the TLC fingerprint analysis and FTIR spectrum of the pomegranate peel extracts. The 70% ethanol extract owned the largest antioxidant capacity than the other two extracts with a value of 358.67 and 2981.59 µmol trolox/g dried sample using the DPPH and CUPRAC methods, respectively. The three pomegranate peel extracts' total phenolic and flavonoid levels ranged from 287.26–1068.81 mg GAE/g dried sample and 0.24-0.75 mg QE/g dried sample. TLC fingerprint analysis of pomegranate peel extract yielded 2, 6, and 6 bands for water extract, 70% ethanol, and p.a ethanol, respectively. The three extracts can be grouped based on FTIR spectrum data using principal component analysis using three principal components with a total variance of 93%. The results obtained show that using different extracting solvents provides different antioxidant capacities and phytochemical profiles.
Phytochemical Profiling of Gynura procumbens (Lour.) Merr. Leaves and Stem Extracts Using UHPLC-Q-Orbitrap HRMS Dewi Anggraini Septaningsih; Cecep Abdurohman Putra; Irma Herawati Suparto; Suminar Setiati Achmadi; Rudi Heryanto; Mohamad Rafi
Indonesian Journal of Chemistry Vol 22, No 6 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.74236

Abstract

In Indonesia, Gynura procumbens (Lour.) Merr., known as Longevity Spinach or Sambung Nyawa, is commonly grown in tropical and subtropical Asian countries. Many biological activities of G. procumbens have been reported. As we know, the composition and concentration of metabolites, as well as plant parts will significantly affect the biological activities. In this work, UHPLC-Q-Orbitrap-HRMS was used for the putative identification of metabolites present in 70% ethanol extract of G. procumbens leaves and stem extract. Also, we performed clustering of G. procumbens leaves and stem extracts using principal component analysis (PCA) with the peak area of the identified metabolites as the variable. Thirty-one metabolites were identified, and the number of identified peaks in the leaves is higher than in the stem. Those identified metabolites are phenolics, fatty acids, oxo monocarboxylic acids, porphyrins, and chlorophyll fragments. The PCA results showed that the leaves and stem extracts could be grouped, indicating that the composition and concentration of detected compounds differed.
Pencirian Kopi Robusta Bengkulu dari Kemungkinan Bahan Pencampur Menggunakan Kombinasi Spektroskopi FTIR dan Kemometrik Deni Agus Triawan; Ghufira Ghufira; Morina Adfa; Mohamad Rafi
agriTECH Vol 42, No 4 (2022)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.64432

Abstract

Penelitian ini bertujuan untuk mengidentifikasi kemurnian kopi bubuk yang beredar di pasaran Kota Bengkulu menggunakan kombinasi spektroskopi FTIR dan teknik kemometrik guna autentifikasi dan kontrol mutu kopi bubuk. Desain penelitian dibuat dengan variabel berupa kopi murni, jagung roasted dan beras roasted, kopi campur jagung roasted (50% b/b), jenis kopi campur beras roasted (50%b/b) dan 18 sampel kopi komersial. Masingmasing variabel tersebut dibuat 3 kali pengulangan. Berdasarkan hasil spektrum FTIR dari kopi murni, jagung roasted dan beras roasted diketahui bahwa terdapat pola spektrum yang hampir mirip dan sulit dibedakan. Analisis PCA dengan bantuan program Unscrambler X menunjukkan nilai PC-1 dan PC-2 yang dapat mendeskripsikan 97% dari total varians (PC-1 = 91%; PC-2 = 6%). Berdasarkan PC-1, kopi murni berada pada sisi positif sedangkan bahan pencampur berupa jagung dan beras berada pada sisi negatif. Plotting sampel kopi komersial pada kopi murni dan kopi dengan campuran beras roasted maupun jagung roasted diperoleh nilai PC-2 dan PC-1 sebesar 95% (PC-1 = 87%; PC-2 = 8%). Dari plotting tersebut, ada indikasi 1 dari 18 sampel mengalami pencampuran dengan jagung atau beras namun konsentrasi pencampurannya tidak dapat diketahui.
Antioxidant Capacity, Total Phenolic, and Flavonoid Content from Java Tea (Orthosiphon aristatus) Extracts Zulhan Arif; Aurentinus Zalukhu; Alfi Hudatul Karomah; Mohamad Rafi
Jurnal Jamu Indonesia Vol. 7 No. 3 (2022): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v7i3.268

Abstract

Orthosiphon aristatus, known as kumis kucing in Indonesia, has some biological activity, i.e., as an anti-inflammatory, fever, rheumatism, diabetes, and kidney stone. This plant is also known for being rich in phenolic compounds such as flavonoids. In this study, we would like to compare the antioxidant activity, total phenolics, and flavonoid content from the stems and leaves of Orthosiphon aristatus extracted with water and ethanol by maceration. The yield stem and leaves of the water extract are 12.98-31.28%, and ethanol extract 3.58 - 9.82% (dry basis). The stem and leaves water extract contains a phenolic of 7.82-26.43 (mg GAE/g) and ethanol extract of 2.27-7.84 (mg GAE/g). Water extract Orthosiphon aristatus flavonoid content is 1.23-2.86 (mg EK/g), and ethanol extract is 1.09-3.95 (mg EK/g). The antioxidant activity of ethanol (IC50), extract from leaves was 123.91 (µg/mL) and from stems was 125.50 (µg/mL), while IC50 of water extract from leaves was 114.70 (µg/mL) and from stems was 125.03 (µg/mL). The correlation test result of active compounds using linear regression is phenolic compounds with antioxidants stronger than flavonoids. The qualitative thin-layer chromatography fingerprint analysis showed that ethanol and water extract contained natural sinensetin compounds.
Co-Authors A. Wahyuningrum ABDUL ROHMAN Abdul Rohman Abdul Rohman Abdul Rohman Abdul Rohman Abdul Rohman Abdul Waris Abdullah Abdullah Ade Heri Mulyati Ade Heri Mulyati Adi Novriansyah Afrianto Daud Agus Jatnika Effendi Agus Mohamad Soleh Akhmad Sabarudin ALFI HUDATUL KAROMAH Alfi Hudatul Karomah Alfi Hudatul Karomah Alfi Hudatul Karomah Alfi Hudatul Karomah Ali Miftahudin Allen Kurniawan Amalia Yunita Amrullah Amrullah Annisa Antonio Kautsar Ary Prabowo Aryo Tedjo Asefin Nurul Ikhtiarini Asma Asma Atang Sutandi Auliatifani, Reza Auliya Ilmiawati Aurentinus Zalukhu Baba Barus BAMBANG PRAJOGO Bambang - Riyanto Bambang Prajogo Eko Wardojo Boyfannie Ivan Putra Cahya Septyanti Cecep Abdurohman Putra Dea Silviani Derry Permana Dewi Anggraeni Septaningsih DEWI ANGGRAINI SEPTANINGSIH Dewi Pusparani Sinambela Dien Atin Boritnaban Djoko Santosa Dyan Fitri Nugraha E. Rohaeti Edy Djauhari Purwakusumah Edy Djauhari Purwakusumah Edy Djauhari Purwakusumah Elok Kamilah Hayati Endang Sunarwati Srimariana Esti Mumpuni Eti Rohaeti Fadila Karunina Farit M Afendi Fathimah Fathimah Fifi Gus Dwiyanti Ghufira Ghufira Hanifullah Habibie Henny Purwaningsih Herdiyanto Herdiyanto Heriyanto Syafutra Hermin Sulistyarti I MADE ARTIKA Ikrar M. Saleh Indah Mutiara Ningtyas Razaad Irma Herawati Suparto Irmanida Batubara Irnawati Irnawati Irnawati Irnawati ISKANDAR ZULKARNAEN SIREGAR Katrin Roosita Khaydanur Khaydanur Khaydanur, Khaydanur Khoirotul Muzayanah L. K. Darusman Laela Wulansari 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 Lee Wah Lim Lenni Mariana Simbolon Liliek Nurhidayati Lisa Aprilia Indriyani Lisa Aprilia Indriyani LUKMAN LUKMAN Lusi Royani M. Agung Zaim Adzkiya Makmum Syafi’i Maria Bintang Maya Melati Meutia Samira Ismet Morina Adfa Muhamad Insanu Muhamad Noor Azizu, Muhamad Noor Muhamad Syukur MUHAMMAD BACHRI AMRAN Muhammad Bachri Amran Muhammad Fuad Zaini Muhammad Majiidu Muliyah, Evi Nadya Cakasana Nancy Dewi Yuliana Nanik Siti Aminah Neliwati NELLY MARLIANI Nengsih, Nunuk Kurniati Ni'ma Hilyatin Nita Hestiyana Nunuk Kurniati Nengsih Nur Alam Dwi Cahyati Nurameylia Rasaidi Nurhajawarsi Nurhajawarsi Nurlita Putri Anggraini Nursifa Mawadah Partomuan Simanjuntak Parwito Puput Melati Purnomo, Tsania Firqin Putra Astaman Putri Vidiasari Darsono, Putri Vidiasari R. Heryanto Reza Auliatifani Rifki Husnul Khuluk Rimbawan Rimbawan Rita K Sari Rizka Wildani Rizky Kurniawan Murtiyanto Rizna Azrianiningsari RONNY YUNIAR GALINGGING Roza Linda Roza Linda Roza Linda Roza Yusfiandayani Rudi Heryanto Rurini Retnowati Salma Iza Fadhila Sandra Arifin Aziz Sefni Reza Yolanda Septaningsih, Dewi Anggraini Setiawan, Budi Setyaningsih, Widiastuti Shinta Maharani Trivena Sifa Awalul Fikriah Siti Norazian Ismail Slamet Ari Dwi Ratnanto Sri Fauziah Sulistijorini SUMINAR SETIATI ACHMADI Suyanti Natalia Syamsudin Abdillah Syamsudin Abdillah Syifa Muflihah Tamimah Shafwatul Ishlah Tanti Yulianti Raga Pertiwi Taopik Ridwan Taopik Ridwan TATIK RAISAWATI Tatik Raisawati Toyohide Takeuchi Triawan, Deni Agus Triyani Oktaria Tsania Firqin Purnomo Tun Tedja Irawadi Umi Khabibah Usman Ahmad Utami Dyah Safitri Utami Dyah Syafitri Wahyuningrum, Maeda Waras Nurcholis Widia Citra Anggundari, Widia Citra Wina Yulianti Wisnu Ananta Kusuma Wulan Tri Wahyuni Wulansari, Laela Yanuar Chandra Wirasembada Yashinta Fitriani Yohana C. Sulistyaningsih Yohana Cecilia Sulistyaningsih Yulita Suyatmika Zulhan Arief Zulhan Arif Zulhelmi Aziz Zulliati Zulliati Zuraidah Nasution