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All Journal Jurnal Manajemen dan Agribisnis JURNAL ILMU PERTANIAN Agrointek Jurnal Kimia Mulawarman Jurnal SOLMA Agrintech: Jurnal Teknologi Pangan dan Hasil Pertanian Jurnal Pendidikan Kimia (JPKim) Jurnal Pertanian Agros Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Teknologi Pertanian PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Agritech: Jurnal Fakultas Pertanian Universitas Muhammadiyah Purwokerto JCRS (Journal of Community Research and Service) Jurnal Riset Teknologi Industri Community Empowerment REACTOR : Journal of Research On Chemistry And Engineering Proceeding International Seminar of Islamic Studies Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA) Teknologi dan Industri Pertanian Indonesia

Muhammad Said Siregar

Universitas Muhammadiyah Sumatera Utara

Author-ID : 806685

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Studi Pembuatan Minuman Serat Alami yang Kaya β-Karoten Muhammad Said Siregar; Irfan Syukri Tbn; Herla Rusmarilin; Desi Ardilla
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 15, No 1 (2023): Vol. (15) No. 1, April 2023
Publisher : Agricultural Faculty

Research on the study of producing rich beta carotene natural fibers beverage has been done by completely randomized design (CRD) with two replicates. The first factor was the ratio of water spinach stem and melinjo seed skin (S1 = 100:0, S2 = 75:25, S3 = 50:50, S4 = 25:75, S5 = 0:100). The second factor was the addition of carrots juice (W1= 30%, W2= 40%, and W3 = 50%). The parameters observed were fiber content, β-carotene content, water absorption index, oil absorption index, hedonic value of color, flavor and aroma. The statistical analysis was showed that the ratio of water spinach stem and melinjo seed skin provide highly significant effect (P ≤ 0.05) on fiber content, beta carotene content, water absorption index, oil absorption index, hedonic of flavor and aroma as well as had no significant effect (P 0.05) to hedonic of color. The addition of carrot juice provides highly significant effect (P ≤ 0.05) on fiber content, beta-carotene content, water absorption index, oil absorption index, hedonic of aroma, color and flavor.

A CONFIRMATORY ANALYSIS OF FOOD SECURITY IN NORTH SUMATERA Yusri, Mohammad; Tirtayasa, Satria; Siregar, Muhammad Said; Kartaatmaja, R.S.
Jurnal Manajemen & Agribisnis Vol. 18 No. 1 (2021): JMA Vol. 18 No. 1, March 2021
Publisher : School of Business, Bogor Agricultural University (SB-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17358/jma.18.1.64

This study aims to provide empirical evidence and investigations on the development of food security in North Sumatera Province (PSU). This research was conducted in districts/cities in North Sumatera Province. Data collection techniques in this study were secondary data collection (aspects of food production per year in a cycle of two harvests calculated on an average, annual population growth rate and annual rice field area), observation and interviews. The analysis technique using Confirmatory Factor Analysis. The results showed that the trend of food security in the aspect of food production, in the aspect of production value, has generally decreased, so that the fulfillment of food production is only eighty percent and shortages each year are met through imports from other countries. Welfare in the PSU is determined by confirmatory factors with the availability of agricultural land, then population and food security. Keywords: confirmatory analysis, food security, north sumatera, agriculture, starving

UJI EFEKTIVITAS ANTIMIKROBA FORMULASI EKSTRAK DAUN PEPAYA (Carica papaya L.) DAN DAUN RAMBUTAN (Nephelium lappaceum L.) TERHADAP BAKTERI STAPHYLOCOCUS AUREUS Muhammad Said Siregar; Boby Aguastian Erwanda; Fuadi Misril
JURNAL TEKNOLOGI PERTANIAN Vol. 13 No. 2 (2024)
Publisher : Prodi Teknologi Pangan Fakultas Pertanian Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/jtp.v13i2.3127

Pepaya merupakan salah satu buah yang banyak tumbuh di daerah tropis seperti Indonesia. Daun pepaya memiliki manfaat yang besar antaralain sebagai sumber antioksidan, bahkan mampu berfungsi sebagai antijamur, dan antimiroba dan daun rambutan banyak ditanam sebagai pohon buah dan dapat ditemukan tumbuh liar. Daun rambutan mempunyai senyawa antibakteri yaitu flavonoid, staphylococus aureus adalah bakteri gram positif yang bersifat toksin yang dapat menghasilkan racun. Penelitian ini dilakukan dengan metode Rancangan Acak Lengkap (RAL) non faktorial yang terdiri dari 5 perlakuan yaitu 40%, 50%, 60%, 70%, 80% dan perbandingan ekstrak daun pepaya dan daun rambutan terdiri dari 5 taraf dan 2 diantaranya kontrol ekstrak daun pepaya dan daun rambutan 100%, dan formulasi ekstrak daun pepaya dan daun rambutan : A. 40% : 60%, B. 50% : 50%, C. 60% : 40%, D. 70% : 30%, E. 80% : 20%. Paramerter pengamatan meliputi Penentuan Aktivitas Antimikroba, Pengamatan dan Pengukuran Diameter Hambatan.

Improving marketing skills for salak processed products through training and mentoring for Jaya Lestari Farmers Group in Tiga Nderket Village, Karo Regency Lita Nasution; Ahmad Afandi; Makhrani Sari Ginting; Muhammad Said Siregar; Muhammad Fitra Zambak; Rikson Asman Fertiles Siburian; Isthifa Kemal; Muhammad Thamrin; Fitria Fitria
Community Empowerment Vol 9 No 11 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.12537

The Jaya Lestari Farmers Group in Tiga Nderket Village, Karo Regency, faces challenges in improving the market competitiveness of their salak processed products due to limited knowledge and marketing skills. This community service program aimed to enhance the group's marketing capabilities through intensive training and mentoring. The program was conducted over two days at the Village Hall and involved 20 group members. Training activities covered the preparation of marketing materials, the use of information technology, and the development of social media content. Mentoring focused on integrating digital marketing strategies into the group’s business activities. Program evaluation showed significant improvements in the ability to use social media for marketing (from 30% to 85%) and in understanding marketing strategies (from 40% to 90%). This initiative successfully increased the market potential of salak processed products, expanded customer reach, and improved the welfare of group members.

Pengolahan Tekanan Tinggi Terhadap Evaluasi Mikrobiologi, Fisikokimia dan Sensori Minuman Ekstrak Tebu (Saccharum officinarum Linn) Hasibuan, Diajeng Nur Syahfitri; Siregar, Muhammad Said; Mokhtar, Tun Norbrillinda; Arshad, Mohamad Helmi Mohd; Mohamad, Nur Ilida; Lazim, Mohd Izwan Mohd
REACTOR: Journal of Research on Chemistry and Engineering Vol 6, No 1 (2025): June 2025
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v6i1.170

Sugarcane extract (Saccharum officinarum Linn) is a natural beverage rich in sucrose, glucose, and fructose, making it sweet and refreshing. However, its high sugar content, combined with high water activity and the absence of natural preservatives, makes it highly perishable. These conditions create an ideal environment for microbial growth, leading to enzymatic browning, fermentation, and contamination by spoilage microorganisms, significantly reducing its shelf life. To extend its shelf life while maintaining quality, effective preservation methods are essential. This research evaluates High Pressure Processing (HPP) as a non-thermal preservation technique, comparing untreated sugarcane extract (T1) with HPP-treated extracts at 400 MPa for 10 minutes (THPPc) and at lower pressures (200 MPa and 300 MPa). Analyses included Total Plate Count (TPC), yeast and mold (Y&M) counts, total coliforms, Escherichia coli, and physicochemical properties such as viscosity, water activity, brix, moisture, and color. Results indicated that HPP significantly reduced TPC from 2.60 × 10⁴ CFU/mL in untreated extract to 1.39 × 10² CFU/mL in THPPc. The Y&M count in the HPP-treated extract was less than 1.0 CFU/mL, compared to 1.20 × 10⁴ CFU/mL in the untreated sample. HPP also maintained key physicochemical properties, reducing viscosity from 18.00 mPa.s in T1 to 12.50 mPa.s in THPPc, while preserving color stability and sweetness perception. This study shows that HPP is an effective preservation method for sugarcane extract, providing a viable alternative to thermal processing by minimizing quality degradation and ensuring microbial safety.

OPTIMASI PERTUMBUHAN BIBIT KELAPA SAWIT DI MAIN NURSERY MELALUI PEMANFAATAN BIOCHAR SEKAM PADI DAN PUPUK NPK PADA TANAH DENGAN KANDUNGAN NITROGEN YANG RENDAH Suprianto, Andi Agus; Alridiwirsah, Alridiwirsah; Siregar, Muhammad Said; Tarigan, Dafni Mawar
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.4007

One of the determining factors in cultivating oil palm plants that can determine productivity and success in planting is seeds. This study aims to evaluate the effect of planting media composition and NPK fertilizer on the growth of oil palm (Elaeis guinensis Jacq) seedlings in the main nursery. The research method used was a factorial randomized block design (RAK) with 3 replications and 2 treatment factors. The first factor is the use of planting media (M) with four levels of treatment: M0 as control, M1 with the provision of rice husk biochar + 75% + 25% top soil, M2 with the provision of rice husk biochar + 50% + 50% top soil, and M3 by providing rice husk biochar + 75% + 25% top soil. Meanwhile, the second factor is the use of NPK (N) fertilizer with three levels: N1 (NPK 50 g/polybag), N2 (NPK 100 g/polybag), and N3 (NPK 150 g/polybag). The research results were analyzed using a factorial RAK design. Significant differences were analyzed further with DMRT at a confidence level of 0.5%. Parameters measured included plant height, number of leaves, leaf area, stem diameter, and total leaf chlorophyll (CCI). Research findings show that the application of rice husk biochar and top soil has a significant effect on the number of leaves, leaf area and stem diameter. The use of NPK fertilizer also has a significant impact, especially in terms of number of leaves, leaf area and stem diameter. The interaction between the two factors also has a significant impact on increasing the stem diameter of oil palm seedlings at the initial nursery stage (main nursery). Key words: Optimization, oil palm seeds, Main nursery, Rice husk Biochar, NPK INTISARI Salah satu faktor penentu dalam budidaya tanaman kelapa sawit yang dapat menentukan produktivitas dan keberhasilan dalam penanaman adalah bibit. Penelitian ini bertujuan untuk mengevaluasi pengaruh komposisi media tanam dan pupuk NPK terhadap pertumbuhan bibit kelapa sawit (Elaeis guinensis Jacq) di main nursery. Metode penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) Faktorial dengan 3 ulangan dan 2 faktor perlakuan. Faktor pertama adalah penggunaan media tanam (M) dengan empat tingkatan perlakuan: M0 sebagai kontrol, M1 dengan pemberian biochar sekam padi + top soil 75% + 25%, M2 dengan pemberian biochar sekam padi + top soil 50% + 50%, dan M3 dengan pemberian biochar sekam padi + top soil 75% + 25%. Sementara itu, faktor kedua adalah penggunaan pupuk NPK (N) dengan tiga tingkatan: N1 (NPK 50 g/polybag), N2 (NPK 100 g/polybag), dan N3 (NPK 150 g/polybag). Hasil penelitian dianalisis dengan rancangan RAK faktorial. Perbedaan yang signifikan dianalisis lebih lanjut dengan DMRT pada tingkat kepercayaan 0,5%.Parameter yang diukur mencakup tinggi tanaman, jumlah daun, luas daun, diameter batang, dan jumlah klorofil daun (CCI). Temuan penelitian menunjukkan bahwa pemberian biochar sekam padi dan top soil memberikan pengaruh yang signifikan terhadap jumlah daun, luas daun, dan diameter batang. Penggunaan pupuk NPK juga memberikan dampak yang signifikan terutama dalam hal jumlah daun, luas daun, dan diameter batang. Interaksi antara kedua faktor juga memiliki dampak yang signifikan pada peningkatan diameter batang bibit kelapa sawit pada tahap pembibitan awal (main nursery). Kata kunci: Optimasi, bibit kelapa sawit, Main nursery, Biochar sekam padi, NPK

RESPON PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG MANIS (Zea mays saccharata) TERHADAP AFILIASI PEMBERIAN PUPUK TEPUNG DARAH SAPI DAN MYCORRHIZA ARBUSKULAR Pane, Fauzi Nur Azhari; Munar, Asritanarni; Siregar, Muhammad Said; Panjaitan, Syaiful Bahri
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.3910

This study aims to determine the response of growth and production of sweet corn (Zea mays saccharata) to affiliation of cow blood meal and Mycorrhiza arbuscular fertilizer. This study used Randomized Block Design (RAK) consisting of two factors and three replications. The first factor is Cow Flour Manure (D0 = No Cow Flour Manure), (D1 = 125 g / plant), (D3 = 375 g / plant), (D3 = 375 g / plant). The second factor is Mycorrhiza Arbuscular (M0 = Without Mycorrhiza Arbuscular), (M1 = 10 g / plant), (M2 = 20 g / plant), (M3 = 30 g / plant). The parameters used were plant height (cm), number of leaf (strands), stem diameter (cm), leaf length (cm), leaf width (cm), cob weight with kelobot / plant sample (g), cob weight without weight / (g), corn trough (cm), corn sweetness index (Briks), cob diameter (mm), and cob / plot weight (kg). The results showed that the dosage of Cow Flour Manure (D3 = 375 g / plant) showed significant difference in the observation parameters of plant height, stem diameter, tuna length, corn sweetness index, cob weight with crop / sample plant and cob / plot weight. The administration of arbuscular Mycorrhiza had no significant effect on all parameters measured. The affiliation of Fertilizer of Cow Flour and Mycorrhiza arbuscular did not show any interaction of growth measurement parameter and sweet corn yield (Zea mays saccharata).Keywords: Cow Blood Flour, Mycorrhiza arbuscular, Sweet Corn Plant.INTISARIPenelitian ini bertujuan untuk mengetahui respon pertumbuhan dan produksi tanaman jagung manis (Zea mays saccharata) terhadap afiliasi pemberian pupuk tepung darah sapi dan Mycorrhiza arbuskular. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari dua faktor dan tiga ulangan. Faktor pertama adalah Pupuk Tepung Darah Sapi (D0= Tanpa Pupuk Tepung Darah Sapi), (D1 = 125 g/tanaman), (D2 = 250 g/tanaman), (D3 = 375 g/tanaman). Faktor kedua adalah Mycorrhiza Arbuskular (M0 = Tanpa Mycorrhiza Arbuskular), (M1 = 10 g/tanaman), (M2 = 20 g/tanaman), (M3 = 30 g/tanaman). Parameter yang digunakan adalah tinggi tanaman (cm), jumlah daun (helai), diameter batang (cm), panjang daun (cm), lebar daun (cm), bobot tongkol dengan kelobot/tanaman sampel (g), bobot tongkol tanpa kelobot/tanaman sampel (g), panjang tongkol (cm), indeks kemanisan jagung (Briks), diameter tongkol (mm), dan bobot tongkol/plot (kg). Hasil menunjukan pemberian Pupuk Tepung Darah Sapi pada taraf (D3 = 375 g/tanaman) berpengaruh berbeda nyata pada parameter pengamatan tinggi tanaman, diameter batang, panjang tongkol, indeks kemanisan jagung, bobot tongkol dengan kelobot/tanaman sampel dan bobot tongkol/plot. Pemberian Mycorrhiza arbuskular tidak berpengaruh nyata pada semua parameter yang diukur. Afiliasi pemberian Pupuk Tepung Darah Sapi dan Mycorrhiza arbuscular tidak menunjukan adanya interaksi parameter pengukuran pertumbuhan dan hasil tanaman jagung manis (Zea mays saccharata). Kata kunci : Tepung Darah Sapi, Mycorrhiza arbuskular, Tanaman Jagung Manis.

The effect of comonomer styrene on the grafting of maleic anhydride onto cyclized natural rubber Muhammad Said Siregar; Desi Ardilla; Eddiyanto Eddiyanto; Asmarasari Nasution
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.56906

The grafting degree of maleic anhydride onto cyclized natural rubber is generally still low. This is due to the lack of electron density of the maleic anhydride double bond so that its reactivity is low. This research aims to increase the grafting degree by the addition of a styrene comonomer. Grafting of maleic anhydride onto cyclized natural rubber had been performed in an internal mixer 150 oC and 80 rpm in the presence of styrene comonomer. The grafted product was analyzed by Fourier Transform Infra-Red to determine the presence of maleic groups and Differential Scanning Calorimetry and Thermalgravimetric to investigate its thermal properties. Fourier Transform Infra-Red spectra confirmed that the grafted product of maleic anhydride onto Cyclized Natural Rubber formed with absorption at 1700 cm-1, 1850 cm-1 and 700 cm-1. The higher concentration of maleic anhydride reacted the higher of grafting degree of maleic anhydride with the high intensity of absorption at 1700 cm-1 and 1850 cm-1. Differential Scanning Calorimetry spectra showed that the glass transition temperature of maleated Cyclized Natural Rubber products increases, the more comonomer are added the higher the glass transition temperature of the product. Generally, based on the Thermalgravimetric spectra, the thermal properties of grafted product does not change significantly compared to the blank sample.

Synthesis and characteristics rubber seed oil bioadditive from Sumatera Utara as low pour point of CPO biodiesel Misdawati Misdawati; Siswadi Siswadi; Muhammad Said Siregar
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.62374

One of the drawbacks of Crude Palm Oil (CPO) biodiesel is that it has high pour point which causes disadvantages in it™s use. North Sumatra is the second largest rubber producer in Indonesia, the use of rubber seeds as a bioadditive to reduce the pour point of CPO biodiesel is one of the right steps. The synthesis of rubber seed oil bioadditives is carried out in two processes; esterification process and transesterification process. This research aims to reduce the pour point of CPO biodiesel by mixing it with bioadditive of rubber seed oil. This study evaluated the effect of composition to find the best combination of biodiesel ratios in the mixture. The research results show that the greater the proportion of bioadditive rubber seed oil, the lower the pour point of the mixed biodiesel. Biodiesel with a low pour point is obtained at 10oC from mixing CPO biodiesel with bioadditive rubber seed oil at a composition of 75:25 and the optimal pour point is -7oC. Performance testing is carried out to differentiate fuel properties and fuel performance. The results show that B15 fuel produces the best performance at a maximum engine speed of 3000 rpm. In this round, a maximum power of 1.5708 kW was obtained, the lowest specific fuel consumption was 517.52 gr/kWh, thermal efficiency was 18.77%; the smallest CO content was 2.808%; HC 185 rpm; CO2 5.28%; NOx 4 ppm.

Menderma Terhadap Sesama sebagai Wujud Menumbuhkan Semangat Kolaborasi Internasional Perguruan Tinggi di Panti Asuhan Walidaina Malaysia: Giving to Others as a Form of Fostering the Spirit of International Collaboration in Higher Education at the Walidaina Orphanage in Malaysia Hardiyanto, Sigit; Febriyanti, Eka; Zambak, Muhammad Fitra; Saragih, Syaiful Amri; Siregar, Muhammad Said; Hadipramana, Josef; Nasution, Muhammad Irfan; Mohamad, Hafizal
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 4 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i4.9241

Universities have a social responsibility to contribute to the progress of society, not only at the local or national level but also at the global level. This form of collaboration is carried out with partners such as overseas orphanages which can overcome obstacles and problems in realizing the synergy of the three dharmas of higher education by providing clean and healthy living behavior programs through personal hygiene health education activities in the orphanage environment to increase knowledge among children in the orphanage. The activity method focuses on interaction by providing counseling to increase knowledge about the importance of clean and healthy living behavior (PHBS) as an effort to strengthen a clean culture that prioritizes health. The service to the international community carried out collaboratively between the Muhammadiyah University of North Sumatra and the Universiti Sains Islam Malaysia went smoothly and provided positive feedback and results to the children in the orphanage, including cognitive abilities as the main capital to improve the experience and quality of health education for children in the orphanage.

Co-Authors Ahmad Afandi Ainun , Alqamari, Muhammad Alridiwirsah Arshad, Mohamad Helmi Mohd Asmara Sari Nasution Asmarasari Nasution Asritanarni Munar Awalluddin - Basuki WS Boby Aguastian Erwanda Budi Suarti Cemda, Abdul Rahman Dafni Mawar Tarigan Dani Budi Mahyono Desi Ardilla Desi Ardilla Desi Sri Pasca Sari Sembiring, Desi Sri Pasca Sari Dharma Amanda Tambunan Dian Arsita Fitri Eddiyanto Eddiyanto Eddiyanto Eddiyanto Eddyanto , EFI SAID ALI Enisa Cita Mentari Febriyanti, Eka Febriyanti, Eka Fitria Fitria Fitria Fitria Fuadi Misril Hadipramana, Josef Hartika, Dyan Hasibuan, Diajeng Nur Syahfitri Herla Rusmarilin Ichlas Rawo Syaputra Irfan syukri Tbn Joseph, Jacqueline Juita Rahmadani Manik Kartaatmaja, R.S. Kemal, Isthifa Lazim, Mohd Izwan Mohd Lismadayanti Lismadayanti Lita Nasution Makhrani Sari Ginting Makhrani Sari Ginting Masura M D Masyura M.D Masyura M.D Misdawati Misdawati Misril Fuadi Mohamad, Hafizal Mohamad, Nur Ilida Mokhtar, Tun Norbrillinda Muhammad Irfan Nasution Muhammad Thamrin Muhammad Thamrin Nadhira, Ahmad Nana Trisna Mei Nasution, Lita Pane, Fauzi Nur Azhari Panjaitan, Syaiful Bahri Reni Puji Astuti Rikson Asman Fertiles Siburian Sari, Widya Utama Siburian, Rikson Asman Fertiles Sigit Hardiyanto simbolon, juliana Sipahutar, Bahagia Sibotolungun Siswadi Siswadi Sudirman Lubis Suprianto, Andi Agus Syaiful Amri Saragih Syakir Naim Siregar Tirtayasa, Satria Yuslina Wati Ardina Yusri, Mohammad Zambak, Muhammad Fitra

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