Saya Dewi Restu Sihombing, Dosen Tetap Universitas Katolik Santo Thomas
EDUCATION
Teknologi Hasil Pertanian
RESEARCH INTERESTS
Food Microbiology
9
Scopus Publications
172
Scholar Citations
7
Scholar h-index
6
Scholar i10-index
Scopus Publications
Investigation of beetroot (Beta vulgaris L.) water-soluble fractions in altering yogurt properties Posman Sibuea, Dewi Restu Sihombing, Connie Daniela, Lumban Siantar V. Natalia, Joncer Naibaho Journal of Future Foods, 2026 • Water-soluble fraction of beetroot was investigated for yogurt development • Low amount of beetroot water fraction increased the yogurt acceptability • Potential of local-based underutilized ingredient for yogurt enrichment Different beetroot derivatives have been used in yogurt, improved the nutritional-related properties, and challenged the functionality as well as acceptability. However, fresh water-soluble-fraction (WFB) from beetroot in yogurt has never been reported. The study evaluated the functionality and acceptability of yogurt enriched with WFB at different concentrations (10, 20, and 30 g/L), which were evaluated at 5 °C for 0, 6, 12, and 18 days of storage. Compared to control, the addition of WFB significantly decreased the pH from 4.1 – 4.9 to 2.3 – 4.2 and increased total acid from 2.1 – 2.5 to 3.0 – 3.6, total lactic acid bacteria (LAB) from 6.6 – 6.9 to 6.8 – 7.1 log CFU/mL, vitamin C from 2.3 – 3.1 to 2.4 – 4.1 mg/100 g, DPPH radical scavenging activity from 23.5 – 50.0 % to 61 – 69 %, and hedonic acceptability. Total LAB rose from 6.6 log CFU/mL to reach the highest at 30 g/L addition which ranged between 6.8 – 7.1 log CFU/mL. 20 g/L of WFB generated a more stable vitamin C during the 18 days of storage period. During the 18 days of storage, the 20 and 30 g/L of WFB yogurt had a higher stability of antioxidants. In conclusion, 20 and 30 g/L of WFB can be expected to enhance the stability of nutritional-related properties of the yogurt with a higher acceptability. Low amount of WFB contributed to an attractive performance from consumer perspective.
Potential of Louhan fish (Amphilophus labiatus) as a local fishery pest in Lake Toba North Sumatra as a source omega 3 and 6 fatty acids Maruba Pandiangan, Dewi Restuana Sihombing, Connie Daniela, Posman Sibuea, Sanggam Dera Rosa Tampubolon, Apul Sitohang, Lasmianna Sitanggang Bio Web of Conferences, 2025 Identifying the oil of Louhan fish (Amphilophus labiatus), which are now considered a nuisance and a danger to the native fish of Lake Toba, as a source of omega 3 and omega 6 fatty acids is the aim of the study. From August to November 2023, the research was conducted at the Faculty of Agriculture Laboratory at Santo Thomas Catholic University. The physical and chemical properties of Louhan fish oil, as well as its fatty acid content, were examined using a gas chromatograph. The physical and chemical analysis of Louhan fish oil revealed the following results: turbidity point 36 oC, total solids 34 oBrix, free fatty acid content 3.35 mg KOH/g, peroxide number 7.3 meq/kg, iodine number 45 mg/100g, and saponification number 198 mg KOH/g. The results of the gas chromatography study showed that the levels of unsaturated fatty acids were higher than those of saturated fatty acids. Furthermore, linolenic acid, an omega 3 fatty acid, and linoleic acid, an omega 6 fatty acid, were found in the analysis's results. Louhan fish oil may include omega 3 and omega 6 fatty acids, which are beneficial to human health, based on its fatty acid composition.
Potential of Medan Barangan Banana (Musa acuminate L.) Extract as Antiphotooxidative in Linoleic Acid Systems P Sibuea, A P Nauli, R Y Siahaan, M Pandiangan, D R Sihombing Iop Conference Series Earth and Environmental Science, 2024 The fat oxidation is a major cause of quality degradation in various processed food products. Oxidation can occur through reactions with diradical triplet oxygen or nonradical singlet oxygen, which may be formed from triplet oxygen in the presence of sensitizers and light. Erythrosine, a common food colorant, is a photosensitizer due to its conjugated double bonds. This study investigates the antioxidant and antiphotooxidant activities of the Medan Barangan banana fruit and its potential to enhance the oxidative stability of food products, particularly in the linoleic acid system. Key methods include extraction and activity testing of various banana extracts: hexanes (HE), hexanes acetone sequential (HASE), and hexanes acetone ethanol sequential (HAESE). Results show all extracts possess reducing power and DPPH radical scavenging activities, with HAESE demonstrating the highest efficacy. Additionally, HAESE exhibits significant singlet oxygen quenching, reducing linoleic acid peroxide formation in the presence of erythrosine. These findings suggest potential applications of Medan Barangan banana in food preservation, contributing to more sustainable agricultural practices by utilizing local agricultural commodities.
Utilization of jasmine flower extract as antimicrobial in tempeh sausage Nathasa Weisdania Sihite, Herla Rusmarilin, Dwi Suryanto, Dewi Restuana Sihombing Iop Conference Series Earth and Environmental Science, 2018 Bacterial contamination is a major problem for sausage products. Jasmine extracts that has antimicrobial compounds can extend the shelf life of tempeh sausage naturally. The purpose of this study was to tested the effectiveness of using jasmine extract as an antimicrobial agent in tempeh sausage during cold storage 4°C. This study began with preparing jasmine extracts by maceration method using waters, methanol, ethyl acetate and hexane as solvents. Bacteria used in the test were Escherichia coli, Staphylococcus aureus and Bacillus cereus. Diffusion disc assay was used with completely randomized design 2 factors and 4 replications. The results showed that the jasmine extracts with a concentration of 25%, 50%, 75% and 100% had an effect to inhibit of the growth of the bacteria. Jasmine extract with ethyl acetate solvent was the most effective to inhibit the growth of bacteria. Concentration of jasmine extracts that can inhibit the growth of bacteria Escherichia coli and Staphylococcus aureus was 0.1% and 0.25%. Tempe sausage with the addition of jasmine extracts was tested microbiologically with total plate count, The test results showed that the addition of low concentrations extracts of jasmine on tempeh sausage could decrease the total microbial at cold storage for 5 days.
Hayami method application in the evaluation process of farmers who produce wet and dry corn seeds Julia Hutauruk, Kelin Tarigan, Siska Siahaan, Maryanti Sitohang, Lidwina zalukhu, Dewi Sihombing Iop Conference Series Earth and Environmental Science, 2018 Corn is one of the strategic and economic value commodities, and has the opportunity to be developed because of its position as the main source of carbohydrates and protein after rice, besides that corn acts as animal feed, industrial raw materials and households. The purpose of this study was to determine the factors that explain the reason farmers sell wet and dry corn seeds. The data analysis method used is the Hayami Method which includes added value, a comparison of the income of farmers who sell wet seeds by selling dry seeds. Factors that influence corn farmers that produce wet and dry corn seeds are the need for fast refunds, weather, labor wages, high selling prices and availability of storage. There is an added value of Rp136.55 / Kg obtained by dry corn seed farmers from processing wet corn seeds. The results of the Independent Sample Test analysis t Test the corn farmers who sell wet seeds with farmers who sell dry seeds that the value of Sig (0.014) <(0.025), meaning that there is a difference in income of wet seed farmers with dry seed farmers.
The effect of chicken and mycorrhizal manure toward cacao seedling growth on ultisol soil Njujuri Bangun, Robert Siahaan, Sixtus Hutauruk, Yustina Sulastri, Dewi Sihombing, Loveman Larosa, Dinanta Arif Tarigan Iop Conference Series Earth and Environmental Science, 2018 Cacao plants are one of the national leading commodities after oil palm and rubber. This study aims to measure the effect of chicken and mycorrhizal manure on cacao seedling growth on ultisol soil. The method used in this study was a randomized block design consisting of two treatment factors. The given of ultisol Soil + Chicken manure (P) consisting of 4 levels: P0 about 100% (control), P1 about 25% Chicken manure + 75% ultisol, P2 about 50% Chicken manure + 50% ultisol and P3 about 75% Chicken manure + 25% ultisol. Administration of Mycorrhizal Dosage: M0 about 0 g Mycorrhiza (control), M1 about 25 g Mycorrhiza, M2 about 50 g Mycorrhiza and M3 about 75 g Mycorrhiza. Based on the results of the study, it can be stated that chicken manure treatment up to 75% and increased plant growth, number of leaves, leaf area, wet weight of seed, root volume and dry weight of seedlings, but not to the diameter of cacao seed stems. The treatment of mycorrhizal doses of up to 75 g/plant and increased plant growth, number of leaves, leaf area, wet weight of seed, root volume and dry weight of seedlings, but not to the diameter of cacao seedling stems. The interaction of chicken manure and mycorrhizal doses had no significant effect on all parameters.
The influence of liquid type with grain size on the soil properties in hybrid corn growth Sixtus Hutauruk, Jawaller Matanari, Iman Firman Siburian, Delima Panjaitan, Sanggam Dera Rosa Tampubolon, Dewi Restuana Sihombing, Maruba Pandiangan Iop Conference Series Earth and Environmental Science, 2018 Liming activity is an effort to raise the soil pH so that the reaction is not acidic. Most of the plants are less tolerant of acidic soil (pH <7). Because acidic soil causes solubility of Aluminum (Al), Manganese (Mn), and Iron (Fe). For example, when Al's solubility is high, Al does not only poison the plant but causes the essential element phosphorus (P) in the soil to be fixed (bound) by the Al so that it cannot be absorbed by the plant. This study aims to determine the effect of lime types with grain size on soil properties and growth and production of hybrid corn. This study uses nonfaktorial randomized block design (RBD) which consists of two treatment factors, namely the type of agricultural lime which is divided into 2 treatment levels, namely D1: Dolomite and D2: Calcite, each type is divided into 3 sizes namely: D1-1 is passes 60 mesh filter, D1-2 is passes 80 mesh filter, D2-1 is passes 60 mesh filter, D2-2 is passes 80 mesh filter. Thus, 4 treatments will be repeated 3 times, so that there will be 12 experimental units. Each experimental unit consists of 3 polybags, so that 36 polybags will be obtained. And in each experimental unit there were 2 sample plants. The results showed that lime treatment significantly affected plant height, wet weight of straw, ear length, ear diameter and ear weight per plant, but had no significant effect on the number of leaves, leaf area index, and flowering age.
The effect of activated charcoal dose and benzyl amino purine concentration on the growth of orchid plantlets in murashige and skoog media in vitro Patricius Sipayung, Jawaller Matanari, Meryana Br Lafau, Yustina Sri Sulastri, Benny B. Ginting, Dewi Restuana Sihombing, Maruba Pandiangan, Tulusman Giawa Iop Conference Series Earth and Environmental Science, 2018 Indonesia has a high variety of orchids. In vitro propagation of orchids was strongly influenced by the composition of the medium used. This study aims to conduct the effect of activated charcoal and BAP concentration on the growth of orchid subcultures in Murashige and Skoog Media. The experimental design used was a Completely Randomized Design (CRD) with two factors. Benzyl Amino Purine concentration (0 ml / l, 0.25 ml / l, 0.5 ml / l, and 0.75 ml / l active dose of charcoal (0 (0 g / l, 1 g / l, and 1, 5 g / l). The results showed that BAP concentrations up to 0.75 ml / l at the age of 8 mst had a significant effect on root length, but did not significantly affect the number of leaves, root number, and plantlet height. The activated charcoal up to 1.5 g / l does not have a significant effect on the number of leaves and number of sprouts at the age of 2-7 mst, but at the age of 8 mst was significantly affect the number of roots, root length, and plantlet height.
RECENT SCHOLAR PUBLICATIONS
Development of antioxidant-rich shrimp sausage through moringa leaf flour fortification C Daniela, DR Sihombing, P Sibuea, M Pandiangan IOP Conference Series: Earth and Environmental Science 1616 (1), 012038 , 2026 2026
PENDEKATAN GIZI DAN EDUKASI SARAPAN UNTUK MENDUKUNG KONSENTRASI BELAJAR SISWA SD HUTADAME DR Sihombing, C Daniela, M Pandiangan Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate … , 2025 2025
Formulasi Snack Bar Pisang dengan Substitusi Tepung Ikan Teri untuk Peningkatan Nilai Gizi RY Siahaan, AP Nauli, P Sibuea, DR Sihombing Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 19-25 , 2025 2025
Potensi Pemanfaatan Ikan Patin untuk Sediaan Konsentrat Protein Ikan M Pandiangan, DR Sihombing, C Daniela, A Sitohang Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 1-9 , 2025 2025
ILMU MIKROBIOLOGI PANGAN: TEORI DAN APLIKASI H Hatimah, DR Sihombing, KM Rahayu, R Aristyarini, KS Sutikno, ... CV GET PRESS INDONESIA , 2025 2025
Edukasi Pemilihan Pangan Sehat bagi Anak Panti Asuhan Yayasan Harapan Tunas Baru Flamboyan C Daniela, DR Sihombing, D Panjaitan, M Pandiangan Jurnal Pengabdian kepada Masyarakat Nusantara 6 (3), 3190-3193 , 2025 2025 Citations: 1
Uji hidrolisis protein dan aktivitas antioksidan hidrolisat protein ikan nila (Oreochromis niloticus) M Pandiangan, DR Sihombing, SDR Tampubolon Jurnal Riset Teknologi Pangan dan Hasil Pertanian (RETIPA), 84-93 , 2025 2025 Citations: 3
Pengembangan Jeli Buah Lokal dari Kombinasi Sari Markisa dan Terung Belanda dengan Penambahan Asam Sitrat dan Gula Kelapa DR Sihombing, C Daniela, M Pandiangan Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 150-157 , 2025 2025
Inovasi Susu Biji Nangka Dengan Sari Daun Kelor Sebagai Minuman Fungsional Untuk Kesehatan C Daniela, DR Sihombing Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 139-149 , 2025 2025
Tata Kelola Penyelengaraan Makan Bergizi Gratis untuk Mencegah Keracunan Makanan P Sibuea, DR Sihombing, C Daniela, M Pandiangan Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 26-39 , 2025 2025
Potential of Louhan fish (Amphilophus labiatus) as a local fishery pest in Lake Toba North Sumatra as a source omega 3 and 6 fatty acids M Pandiangan, DR Sihombing, C Daniela, P Sibuea, SDR Tampubolon, ... BIO Web of Conferences 156, 03033 , 2025 2025
PENANAMAN TANAMAN HERBAL DI KAWASAN HULU DAERAH ALIRAN SUNGAI WAMPU KABUPATEN LANGKAT DR Sihombing, C Daniela, M Pandiangan Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate … , 2024 2024
Ekstraksi Albumin dari Ikan Gabus (Channa Striata) Secara Hidrolisis Asam Sebagai Bahan Sediaan Pangan M Pandiangan, C Daniela, DR Sihombing, L Sirait Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 1-8 , 2024 2024 Citations: 3
Potential of Medan Barangan Banana (Musa acuminate L.) Extract as Antiphotooxidative in Linoleic Acid Systems P Sibuea, AP Nauli, RY Siahaan, M Pandiangan, DR Sihombing IOP Conference Series: Earth and Environmental Science 1413 (1), 012072 , 2024 2024 Citations: 1
EKSPLORASI POTENSI CAMPURAN TEPUNG BIJI DURIAN DAN TEPUNG DAUN KELOR DALAM MIE KERING SEBAGAI PRODUK FUNGSIONAL BERKUALITAS TINGGI C Daniela, DR Sihombing, C Sigalingging Jurnal Sains dan Teknologi Pangan 9 (5) , 2024 2024
Pengembangan Biskuit Substitusi Tepung Labu Kuning dan Pisang Ambon sebagai Sumber Kalium DR Sihombing, C Daniela, M Pandiangan, EIP Hutabarat Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 57-64 , 2024 2024
Potensi Minuman Karbonasi Fungsional Menggunakan Sari Nanas dan Brokoli dengan Penambahan Natrium Bikarbonat C Daniela, DR Sihombing, R Sihole Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 65-72 , 2024 2024
Stunting KAH Achjar, T Anwar, HF Raji, R Alita, D Sulistiyorini, M Maidartati, ... PT. Green Pustaka Indonesia , 2024 2024 Citations: 4
Optimization of Essential Fatty Acids Via Esterification of the Native North Sumatera’s Freshwater Fish M Pandiangan, DR Sihombing, CD Simbolon, SDR Tampubolon, ... International Journal of Design & Nature and Ecodynamics 19 (4), 1363-1369 , 2024 2024 Citations: 3
Studi Pembuatan Permen Jelly Berbasis Buah dan Tanaman Herbal yang Kaya Antioksidan C Daniela, DR Sihombing, EA Siregar Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 111-119 , 2024 2024 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
Antimicrobial activity of turmeric leaf extract against Escherichia coli, Staphylococcus aureus, Shigella dysenteriae, and Lactobacillus acidophilus LA Ilham, R Herla, S Dwi, S DewiRestuana IOP Conference Series: Earth and Environmental Science 205 (1), 012048 , 2018 2018 Citations: 19
The effect of activated charcoal dose and benzyl amino purine concentration on the growth of orchid plantlets in murashige and skoog media in vitro P Sipayung, J Matanari, MB Lafau, YS Sulastri, BB Ginting, DR Sihombing, ... IOP Conference Series: Earth and Environmental Science 205 (1), 012025 , 2018 2018 Citations: 17
Effect of citric acid and sucrose concentration on the quality of passion fruit jelly with dutch eggplant S Maruli Tua, S Apul, S Dewi Restuana, T Rosa, P Maruba, S Posman, ... IOP Conference Series: Earth and Environmental Science 205 (1), 012050 , 2018 2018 Citations: 15
Analisis faktor-faktor yang mempengaruhi minat petani berusahatani jagung di Desa Mardingding NE Ginting, D Sihombing Jurnal PLANS: Penelitian Ilmu Manajemen dan Bisnis 13 (2), 77-81 , 2018 2018 Citations: 13
Utilization of jasmine flower extract as antimicrobial in tempeh sausage NW Sihite, H Rusmarilin, D Suryanto, DR Sihombing IOP Conference Series: Earth and Environmental Science 205 (1), 012037 , 2018 2018 Citations: 11
Analisis Dampak Revitalisasi Pasar Tradisional Terhadap Persepsi Konsumen Dan Pengaruhnya Terhadap Minat Beli Dan Kepuasan Konsumen Di Kota Medan IK Sihombing, IS Dewi, K Al Madany Jurnal Bis-A: Jurnal Bisnis Administrasi 8 (1), 12-25 , 2019 2019 Citations: 10
Karakteristik Fisik dan Kimia Roti Tawar Substitusi Tepung Jagung Lokal Termodifikasi DR Sihombing Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 110-116 , 2021 2021 Citations: 8
Komposisi Kandungan Asam Lemak Pada Minyak Ikan Sarden (Sardinella sp.) M Pandiangan, C Daniela, DR Sihombing, WK Daeli Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (Retipa), 1-7 , 2023 2023 Citations: 7
Hayami method application in the evaluation process of farmers who produce wet and dry corn seeds J Hutauruk, K Tarigan, S Siahaan, M Sitohang, L zalukhu, D Sihombing IOP Conference Series: Earth and Environmental Science 205 (1), 012009 , 2018 2018 Citations: 7
Stunting KAH Achjar, T Anwar, HF Raji, R Alita, D Sulistiyorini, M Maidartati, ... PT. Green Pustaka Indonesia , 2024 2024 Citations: 4
Pengaruh variasi konsentrasi tepung kulit ari kopi pada tepung terigu terhadap mutu biskuit A Sitohang, DR Sihombing, C Daniela, A Einsten Jurnal Riset Teknologi Pangan dan Hasil Pertanian (RETIPA), 93-101 , 2021 2021 Citations: 4
Uji hidrolisis protein dan aktivitas antioksidan hidrolisat protein ikan nila (Oreochromis niloticus) M Pandiangan, DR Sihombing, SDR Tampubolon Jurnal Riset Teknologi Pangan dan Hasil Pertanian (RETIPA), 84-93 , 2025 2025 Citations: 3
Ekstraksi Albumin dari Ikan Gabus (Channa Striata) Secara Hidrolisis Asam Sebagai Bahan Sediaan Pangan M Pandiangan, C Daniela, DR Sihombing, L Sirait Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 1-8 , 2024 2024 Citations: 3
Optimization of Essential Fatty Acids Via Esterification of the Native North Sumatera’s Freshwater Fish M Pandiangan, DR Sihombing, CD Simbolon, SDR Tampubolon, ... International Journal of Design & Nature and Ecodynamics 19 (4), 1363-1369 , 2024 2024 Citations: 3
Studi Pembuatan Permen Jelly Berbasis Buah dan Tanaman Herbal yang Kaya Antioksidan C Daniela, DR Sihombing, EA Siregar Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 111-119 , 2024 2024 Citations: 3
Pemanfaatan Ikan Belut Sawah (Monopterus albus) sebagai Sediaan Bahan Pangan Konsentrat Protein Ikan M Pandiangan, DR Sihombing, A Sitohang Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 85-91 , 2024 2024 Citations: 3
Uji Sensoris dan Sifat Kimia Churros Berbahan Tepung Labu Kuning dan Tepung Terigu C Daniela, DR Sihombing Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 119-126 , 2023 2023 Citations: 3
Pemanfaatan ikan louhan (Amphilophus labiatus) sebagai sumber asam lemak omega 3 dan 6 M Pandiangan, A Sitohang, DR Sihombing, L Sitanggang Jurnal Riset Teknologi Pangan dan Hasil Pertanian (RETIPA), 59-65 , 2023 2023 Citations: 3
Formulasi Minuman Probiotik Kombinasi Sari Buah Nenas Jeruk dan Pepaya Sebagai Sumber Vitamin C DR Sihombing Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 30-37 , 2022 2022 Citations: 3
Formulasi Pembuatan Minuman Herbal dari Campuran Sari Jahe dan Temulawak DR Sihombing Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA), 69-75 , 2021 2021 Citations: 3
