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All Journal Buletin Peternakan AQUATIC SCIENCE & MANAGEMENT Jurnal MIPA PHARMACON CHEMISTRY PROGRESS Jurnal Penelitian Hutan Tanaman Jurnal Ilmu dan Teknologi Pangan The Studies of Social Sciences Jurnal Agroekoteknologi Terapan Jurnal Teknologi Hasil Peternakan Agroindustrial Journal JURNAL HUTAN TROPIS
Edi Suryanto
Jurusan Kimia Fak. MIPA Unsrat Manado
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Medicine & Pharmacology Physics Social Sciences Veterinary Other

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An Empirical Analysis of Veterinary Certification, Perceived of Freshness and Price Suitability on Repurchase Intentions of Certified Beef in Pekanbaru Ilham, Muhammad; Syahlani, Suci Paramitasari; Suryanto, Edi
Buletin Peternakan Vol 49, No 2 (2025): BULETIN PETERNAKAN VOL. 49 (2) MAY 2025
Publisher : Faculty of Animal Science, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21059/buletinpeternak.v49i2.106053

Abstract

Rapid economic growth has led to an increase in the consumption of meat in the city of Pekanbaru in Riau Province, Indonesia. This calls greater attention from the government and animal product business units to improve the quality of meat supply. Implementing hygiene and sanitation practices along meat distribution channels is one strategy to enhance the quality of meat. The Indonesian government requires meat products to have certification in the form of a Veterinary Control Number (NKV). This study aims to study the effect of NKV certification marks, superior value of fresh beef, and perceived price suitability on the intention to repurchase NKV-certified beef. This study was conducted using a mixed method, using in-depht interview and survey design. The questionnaires were distributed through online and offline methods to a sample of 200 respondents, who were selected using judgemental sampling method based on the following criteria: (1) they were residents of the city of Pekanbaru; (2) they were at least 21 years old; (3) they had engaged in buying beef. The questionnaire consisted of 22 questions regarding NKV labelling, superior value of fresh beef, perceived price suitability, and intention to repurchase NKV-certified beef. Data were analysed with linear multiple regression analysis using SPSS 26 software package. The results of the t test showed that only the superior value of fresh beef had no significant influence (β = 0.075) on the intention to repurchase certified beef in Pekanbaru, while the NKV certification mark (β = 0.160) and perceived price suitability (β = 0.447) had a significant influence on the intention to repurchase certified beef. This study shows that the research model explains 28.4% of the variability in the intention to repurchase beef. This research concluded that the NKV certification mark and perceived price suitability are important factors that influence the intention to repurchase beef in Pekanbaru City.
Molecular Identification of Lactic Acid Bacteria from Broiler Chicken Meat Mudawaroch, Roisu Eny; Setiyono, Setiyono; Yusiati, Lies Mira; Suryanto, Edi
Agroindustrial Journal Vol 10, No 2 (2023)
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/aij.v10i2.89982

Abstract

Lactic acid bacteria are bacteria used to ferment food. Molecular identification of isolates of lactic acid bacteria has a high degree of accuracy compared to morphological identification. This study aimed to molecularly identify isolates of lactic acid bacteria from broiler chickens. Molecular identification is carried out in 3 stages, namely: rRNA gene amplification stage, squencing and phylogeny tree. PCR electrophoresis results obtained amplicone results measuring about 1,500 bp. The results of BLAST analysis showed that the gen 16S rRNA sequence of BR 17 lactic acid bacteria isolate had a 97-98% similarity with the genome sequence of the Lactobacillus fermentum strain.  Development of phylogenetic tree isolates of single clusters of lactic acid bacteria BR 17 with strains of Lactobacillus fermentum CAU2036, Lactobacillus fermentum JCM 7772, and Lactobacillus fermentum 10-18. The identification results of lactic acid bacteria isolate BR 17 showed Lactobacillus fermentum BR 17.
Pelatihan Pembuatan Sabun Mandi Mengandung Bahan Alami bagi Kelompok Ibu Dharma Wanita FMIPA Universitas Sam Ratulangi Momuat, Lidya Irma; Suryanto, Edi; Wuntu, Audy D.; Hatidja, Djoni
The Studies of Social Sciences Vol. 8 No. 1 (2026): The Studies of Social Sciences
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35801/tsss.v8i1.67135

Abstract

Program Kemitraan Masyarakat ini ditujukan kepada kelompok Ibu Dharma Wanita Persatuan FMIPA Universitas Sam Ratulangi untuk meningkatkan keterampilan produktif melalui pelatihan pembuatan sabun mandi berbahan alami. Metode pelaksanaan meliputi focus group discussion, pengujian awal formula, penyuluhan tentang manfaat sabun, reaksi saponifikasi, keselamatan kerja, demonstrasi, praktik langsung, serta evaluasi menggunakan kuesioner pra dan pascapelatihan. Formula sabun menggunakan campuran minyak zaitun, sawit, dan kelapa yang direaksikan dengan natrium hidroksida dan air sesuai bilangan penyabunan. Hasil kegiatan menunjukkan peningkatan pemahaman peserta mengenai bahan baku sabun, serti meningkatnya keterampilan praktik dan minat pengembangan usaha rumah tangga berbasis produk perawatan tubuh alami.
Modifikasi Pati Umbi Daluga (Cytosperma merkusii) dengan Ekstrak Polifenol Biji Alpukat (Persea americana Mill.) serta Evaluasi Penghambatan Perncernaan Pati Rumbewas, Patricia; Suryanto, Edi; Momuat, Lidya
CHEMISTRY PROGRESS Vol. 19 No. 1 (2026)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.19.1.2026.68061

Abstract

ABSTRAK Transformasi pola hidup masyarakat modern yang cenderung mengonsumsi makanan rendah serat serta makronutrien namun tinggi kandungan gula dan lemak jenuh meningkatkan pravelansi penyakit kronis non infeksi seperti diabetes melitus, hipertensi, jantung, kanker, dsb. Sehingga, restrukturisasi diet menjadi solusi jangka panjang namun dapat terhambat akibat konsumsi makanan pokok yang berindeks glikemik tinggi seperti nasi, singkong, dan sumber karbohidrat lainnya. Penelitian ini bertujuan untuk memodifikasi pati umbi daluga dengan ekstrak polifenol biji alpukat, mengetahui karakteristik pati termodifikasi melalui FT-IR, XRD, dan SEM serta menentukan kemampuan antioksidan dan daya cerna dari pati termodifikasi. Hasil pengujian menunjukkan bahwa pati termodifikasi dengan ekstrak hidrotermal 3 jam (H3) memiliki hasil terbaik dengan kandungan total fenolik di angka 21.2 μg/mL dan tanin terkondensai 102 μg/mL serta nilai-nilai DPPH dan FRAP berturut-turut adalah 64% dan 23 μmol/mL. Hasil FTIR sebelum modifikasi dan sesudah modifikasi menunjukkan spektrum gugus fungsi khas aromatik (C=C) pada H3 yang mengindikasikan adanya gugus khas fenolik setelah dimodifikasi melalui proses gelatinisasi dan retrogradasi. Hasil karakterisasi XRD menunjukkan bahwa sampel mengalami penurunan nilai FWHM dan pergeseran posisi puncak di sekitar 2θ 20o sesudah modfikasi. Selanjutnya, citra SEM memperlihatkan perubahan bentuk pati dari granula bulat dan halus menjadi granula yang memiliki bentuk tak teratur dengan permukaan yang agak halus, sedangkan analisis daya cerna menghasilkan angka 90%. Dari hasil penelitian ini, pati termodifikasi berpotensi dikembangkan sebagai bahan pangan fungsional lokal yang tahan cerna. ABSTRACT The lifestyle transformation of modern society, characterized by a tendency to consume diets low in dietary fiber and micronutrients but high in sugar and saturated fats, has increased the prevalence of non-communicable chronic diseases such as diabetes mellitus, hypertension, cardiovascular disease, and cancer. Consequently, dietary restructuring serves as a long-term solution, yet it can be hindered by the consumption of high-glycemic-index staple foods like rice, cassava, and other carbohydrate sources. This study aims to modify daluga tuber starch using avocado seed polyphenol extract, investigate the characteristics of the modified starch via FT-IR, XRD, and SEM, and determine its antioxidant capacity and digestibility. The results demonstrated that the starch modified with a 3-hour hydrothermal extract (H3) yielded the best performance, with a total phenolic content of 21.2 μg/mL, condensed tannins at 102 μg/mL, and DPPH and FRAP values of 64% and 23 μg/mL, respectively. The FTIR results before and after modification revealed a characteristic aromatic functional group spectrum (C=C) in H3, indicating the presence of specific phenolic groups following the gelatinization and retrogradation processes. XRD characterization showed that the samples experienced a decrease in the FWHM value and a peak shift around 2θ = 20° after modification. Furthermore, SEM imagery exhibited a morphological alteration in the starch from smooth, spherical granules into irregularly shaped granules with relatively smooth surfaces, while the digestibility analysis yielded a value of 90%. Based on these findings, the modified starch has the potential to be developed as a local, digestion-resistant functional food ingredient.
Isolasi dan Karakterisasi Pati dari Kulit Singkong (Manihot esculenta) sebagai Bioflokulan untuk Menurunkan Kadar Limbah Fenol dan p-Klorofenol Pairunan, Regina; Suryanto, Edi; Vanda S Kamu
CHEMISTRY PROGRESS Vol. 19 No. 1 (2026)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.19.1.2026.68062

Abstract

ABSTRAK Penelitian ini menguji efektivitas pati kulit singkong sebagai bioflokulan organik dalam pengolahan limbah kimia fenol dan p-klorofenol. Fokus utama studi adalah menganalisis pengaruh proses gelatinisasi, variasi dosis pati, serta durasi pengadukan terhadap efisiensi penurunan kadar polutan. Proses dimulai dengan isolasi pati lewat deproteinasi menggunakan larutan NaOH 0,5 M. Selanjutnya, flokulasi diuji pada 10 ml sampel limbah dengan memvariasikan dosis bioflokulan (0,2; 0,5; dan 1 gram) serta waktu pengadukan (15, 30, dan 60 menit). Hasil eksperimen membuktikan bahwa pati kulit singkong sangat efektif sebagai agen pengolah limbah. Kondisi operasional optimum tercapai pada dosis 0,5 gram dengan waktu pengadukan 30 menit, yang mampu mereduksi kadar fenol sebesar 85,32% dan p-klorofenol sebesar 84,32%. ABSTRACT This study evaluates the effectiveness of cassava peel starch as an organic bioflocculant for treating phenol and p-chlorophenol chemical wastewater. The primary focus of the study is to analyze the effects of the gelatinization process, variations in starch dosage, and stirring duration on pollutant reduction efficiency. The process began with starch isolation via deproteinization using a 0.5 M NaOH solution. Subsequently, flocculation was tested on 10 mL wastewater samples by varying the bioflocculant dosages (0.2, 0.5, and 1 g) and stirring times (15, 30, and 60 min). Experimental results demonstrate that cassava peel starch is highly effective as a wastewater treatment agent. The optimum operational conditions were achieved at a dosage of 0.5 g with a stirring time of 30 min, which reduced phenol and p-chlorophenol levels by 85.32% and 84.32%, respectively.
Co-Authors Abigael, Reliana Adisti A. Rumayar, Adisti A. Adithya Yudistira Adrian, Gerild Aliwu, Indriwati Alvin Febryanto Ginting, Alvin Febryanto Amelia Walangitan Aneke Korua, Aneke Assa, Jan Rudolf Audy Denny Wuntu Bolilera, Theressa Chairil Anwar Chaleb Paul Maanari Christine Mamuaja Colling, Erningsi Dareda, Christina Tang Defny Silvia Wewengkang Dewa Gede Katja Dika, Oki Oktaviani Djasibani, Hemy R. Djoni Hatidja Dokri Gumolung Edam, Mariati Edam, Mariati Elisa Putri Tarigan, Elisa Putri Ering, Aprily A. P. Etni Togolo Fahcrudin, M Fajar Lestari Fetty Indriaty Fiky Andy Prastyawan FITRIA NINGRUM, FITRIA Frenly Wehantouw Gregoria S. S. Djarkasi Harry S. J. Koleangan Hasan Datu, Hasan Henry Fonda Aritonang Hindang S. Kaempe Indriawan, Rebecca Teisha Inneke F. M Rumengan Jeanette Manarisip Jemmy Abidjulu Jessy Paendong Johnly A Rorong Johnly A. Rorong Judith Mandei Juliana Christie Kurniawan Julius Pontoh Kabalmay, Julista Alfa Kaemba, Almawaty Kaemba, Almawaty Karepu, Meifry Gavrila Karisoh, Marsel Refanli Landeng, Patrisia Jaklin Landjang, Enrico Yoel Leo Arifsandi Budiarso, Leo Arifsandi Lexie Mamahit Lidya I. Momuat Lidya Irma Momuat Liemey Iviane Lumempouw Liemey Lumempouw Lies Mira Yusiati Lisa Purnawati Saleh Luayli, Lina Lucia Cecilia Mandey Makanaung, Eresia Mamuaja, Christin Mandalurang, Fitriani Manongko, Patricia Syaron Max R. J. Runtuwene Meiske Lumingkewas Meiske S. Sangi Mercy Taroreh Momuat, Lidya Mongan, Jemsi Muhammad Ilham Nancy Kiay, Nancy Nova . Olha Rantung, Olha Paijo, Auliya Rizky Harjono Pairunan, Regina Palente, Ivon Pangemanan, David Albert Parinding, Yosep Rudol Pasanda, Immanuel M. Paulina yamlean Raganata, Tirza C. Riny Modaso Rizky H. Mawardi Robert Molenaar Roisu Eny Mudawaroch Rompas, Veckie Frankie Rondonuwu, Samuel D. J. Rorong, Johnly Alfrets Rumbewas, Patricia Runtuwene, Max R. J Runtuwene, Max Revolta Jhon Ryan Vanly Saryana Sakalaty, Evanda Sakti, Dwi Selvian Talapessy Sembiring, Elia Sersermudy, Chesya Hana Setiyono Setiyono Shirley E. S. Kawengian Sri Febriani Hatam Sri Sudewi, Sri Suci Paramitasari Syahlani Susmantoyo, Adinda Putri Maharani Suyanto Suyanto SYARIFUDDIN KADIR Tapa, Fitriyanti La Taufik Hidayat Trina Tallei Vanda S Kamu Waworuntu, Mutiara G. Wiranto, Rezky Ramadhani Putri Yenny Tambunan Yuny Erwanto