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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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PENGARUH PENAMBAHAN DAUN ALPUKAT (Persea americana Mill) DAN LAMA PENGERINGAN TERHADAP MUTU TEH DAUN SIRSAK (Annona muricata) Said Siregar, Muhammad; Fuadi, Misril; Hartika, Dyan
Agrintech: Jurnal Teknologi Pangan dan Hasil Pertanian Vol 1, No 1 (2017)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

Soursop leaf herbal tea is a health drink made from herbs soursop leaf and health benefits. Indonesian society using soursop leaves as an herbal medicine for treating cancer, in particular by drinking boiled water fresh soursop leaves. This study aimed to determine the effect of avocado leaves and drying time of the tea leaves of the soursop. This study uses a completely randomized design (CRD), which consists of two factors: the first factor the addition of avocado leaves (20%, 30%, 40%, 50%) and the second factor drying time (60 minutes, 90 minutes, 120 minutes, 150 minutes). Parameter observations on the study include vitamin C content, ash content, tannin levels, moisture, aroma, color and flavor. The addition of avocado leaves give a highly significant effect (p <0.05) of the vitamin C content, ash content, tannin levels, moisture, aroma, color and flavor. Drying time provides highly significant effect (p <0.05) of the vitamin C content, ash content, tannin levels, moisture, aroma, color and flavor. The influence of the interaction between the addition of avocado leaves and drying time provides highly significant effect (p <0.01) on levels of vitamin C, tannin content, and ash content,Â Keywords: Tea leaves of the soursop, avocado leaves, drying time

PEMBERIAN PUPUK ABG (Amazing Bio Growth) DAN PUPUK KOMPOS TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN SAWI HIJAU (Brassica juncea L. Coss) Asmara Sari Nasution; Awalluddin -; M. Said Siregar
AGRIUM: Jurnal Ilmu Pertanian Vol 18, No 3 (2014)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

The research on the application of fertilizer ABG (Bio Amazing Growth) and compost on the growth and yield of mustard greens (Brassica juncea L. Coss) has been carried out by using a randomized block design (RBD) consists of a two-factor factorial researched and 3 replications. ABG fertilizer treatments showed significant effect on the observed parameters such as plant height, leaf number and leaf area. But showed no real effect on the other parameters. Compost fertilizer treatments showed significant effect on all parameters except the parameter observations shoot root ratio shows no real effect. The interaction of fertilizer treatment and fertilizer Compost ABG showed significant effect on leaf area observed parameters, but the effect is not significant on the observation parameters plant height, number of leaves, root shoot ratio.Keywords: fertilizer ABG, compost, growth, production of green cabbage

PENGARUH SUHU DAN WAKTU PENYIMPANAN TERHADAP KADAR GULA REDUKSI YANG TERKANDUNG DALAM BUAH SALAK PADANGSIDIMPUAN - - M. Said Siregar
AGRIUM: Jurnal Ilmu Pertanian Vol 16, No 2 (2010)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

Penelitian tentang pengaruh suhu dan waktu penyimpanan terhadap kadar gula reduksi yang terkandung dalam buah salak telah dilakukan. Buah salak disimpan dalam suhu yang berbeda: suhu ruang, 34ºC, 37ºC d an 40 ºC. Analisis kandungan gula reduksi buah salak ditentukan selang setiap hari mulai 0 hari sampai 9 hari penyimpanan dengan metode Nelson-Somogy menggunakan Spektrofotometer 1101. Kandungan gula reduksi sebelum penyimpanan 1,276% dan kandungan maksimum gula reduksi diperoleh pada penyimpanan 37ºC setelah 3 hari yaitu 8,14%. Kadar gula reduksi maksimum pada suhu ruang (7 hari), 34 ºC (5hari) dan 40 ºC ( 2 hari) masing-masing: 7.92%, 8.073% dan 4.640%..Kata kunci: gula reduksi, salak, padangsidimpuan.

UTILIZATION OF CABBAGE WASTE (Brassica oleracea) AS A PRESERVATIVE OF PARROT FISH (Oreochromis sp) M. Said Siregar; Misril Fuadi; Ainun ,
AGRIUM: Jurnal Ilmu Pertanian Vol 19, No 3 (2015)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

The research on the utilization of cabbage (Brassica oleracea) waste as a preservative tilapia (Oreochromis sp) with RAL factorial method with 2 replications.The first factor is NaCl concentration (K) which consists of 4 levels, namely: K1 = 1%, K2 = 2%, 3% = K3, K4 = 4%. Factor II is storage time (L) which consists of 4 levels, namely: L1 = 2 days, L2 = 4 days, L3 = 6 days, L4 = 8 days. The parameters observed from the data analysis showed that NaCl concentration and storage time significantly affected the protein content, moisture content, organoleptic aroma, texture organoleptic tests, organoleptic color.Keywords: utilization, cabbage waste, preservative, parrot fish

GRAFTING PRODUCT OF MALEIC ANHYDRIDE ONTO CYCLIZED NATURAL RUBBER IN AN INTERNAL MIXER: PHYSICAL PROPERTIES AND COMPATIBLITY WITH POLYAMIDE M. Said Siregar
AGRIUM: Jurnal Ilmu Pertanian Vol 19, No 2 (2015)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

The research of grafting Maleic Anhydride onto Cyclized Natural Rubber has been carried out in an Internal Mixer 150oC in absence of Benzoyil Peroxide with rotor speed 80 rpm. Physical properties of the grafting product determined such as softening point, acid value, color, viscosity, and glass transition themperature. Compatibilty of the grafting product also investigated. The physical properties of the grafting product were not signicanly different with blank, except glass transition themperature was increased. Compatiblity of grafting product with polyamide was increased.Keywords: grafting, cyclic natural rubber, maleic anhydride, physical properties, compatiblity

GRAFTING MALEAT ANHIDRAT PADA KARET ALAM SIKLIS (CYCLIC NATURAL RUBBER/CNR) DENGAN INISIATOR DICUMYL PEROKSIDA Eddiyanto ,; M. Said Siregar; Ichlas Rawo Syaputra
AGRIUM: Jurnal Ilmu Pertanian Vol 17, No 2 (2012)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

AbstractThe research on the degree of grafting of maleic anhydride (MA) on Cyclic Natural Rubber/CNR with the initiator Dicumyl Peroxide (DCP) has done. Grafting process carried out by reflux in a flask technique coupled with the base of the condenser and oil bath at a temperature of (105-110)°C, variations in the concentration of MA (3, 6, 9, 12, 15) phr, DCP variation inisiator concentration (0.05; 0.1; 0.15) molar ratio and variation in time (15, 30, 60, 90) minutes. Determination of the degree of grafting is then performed by the method of titration and FTIR spectra analysis to determine the grafting of MA on CNR chain. The results showed that the MA-g-CNR occurs at 15 phr comparison with the degree of grafting of 0.12% for the variation of the concentration of MA; 0.15 molar ratio to the degree of grafting of 0.07% for the variation in concentration of DCP inisiatior; 90 minutes with a degree grafting of 0.14% for the time variation.Keywords: grafting, cyclic natural rubber, maleic anhydride, dicumyl peroxide

MODIFIKASI PROSES PEMBUATAN KARET ALAM SIKLIS (CYCLIC NATURAL RUBBER) MELALUI REAKSI PEMUTUSAN RANTAI (CHAIN SCISSION) DAN SIKLISASI Eddyanto ,; Yuslina Wati Ardina; M. Said Siregar
AGRIUM: Jurnal Ilmu Pertanian Vol 18, No 1 (2013)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

Cyclization of natural rubber has been carried out by the chain scission process preceded earlier. Chain scission process performed in a solution of phenol at a temperature of 1800C by using Brosse method, oxidation reaction with fenilhidrazin and oxygen . While the cyclization of natural rubber was conducted by Tutorskii method , using lewis acid catalyst, P2O5. Characterization of raw materials and products of the chain scission and cyclization performed by infrared spectroscopy analysis. The infra red spectra showed the strong peak at 2925 cm-1 and 1446 cm-1 , reduced absorption at 1600s cm-1, the emergence of a new peak at 757 cm-1 and a weaker absorption peak at 835 cm-1. The absorption peaks of cyclic natural rubber of crumb rubber ( SIR - 10 ) also changed . The results showed that the percentage of chain scission were 13.1 % on the latex and 2 % on the SIR - 10 . While the percentage of cyclization yield of latex and SIR - 10 were 22.8 and 73.1 %, respectively.Keywords : cyclic natural rubber, chain scission, cyclization

STUDI PEMBUATAN TAHU DARI BIJI NANGKA (Artocarpus heterophyllus Lamk.) DENGAN PENAMBAHAN CaSO4 DAN LAMA PENGGUMPALAN Budi Suarti; Dani Budi Mahyono; M. Said Siregar
AGRIUM: Jurnal Ilmu Pertanian Vol 19, No 1 (2014)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

The objectives study was to investigate the effect of CaSO4 consentrations and clotting time on quality of jackfruit seed tofu. This study used a completely randomized factorial design with two replications. The first factor is CaSO4 consentration (C), which consists of 4 levels are: C1 = 1%, C2 = 2%, C3 = 3% and C4 = 4%. The second factors is clotting time (L) consisting of 4 levels, namely: L1 = 30 minutes, L2 = 60 minutes, L3 = 90 minutes and L4 = 120 minutes. Parameters that observed: protein content, sucrose content, organoleptic color, flavor and texture. CaSO4 consentration and clotting time influenced the protein and sugar content, organoleptic color, flavor and texture. Keywords: tofu, jackfruit seeds, calcium sulfate, clotting.

MODIFIKASI KIMIA KARET ALAM SIKLIS (CYCLIC NATURAL RUBBER/CNR) DENGAN TEKNIK GRAFTING: MENGGUNAKAN MONOMER METIL METAKRILAT DAN INISIATOR BENZOIL PEROKSIDA M. Said Siregar; Muhammad Thamrin; Basuki WS; Eddiyanto ,
AGRIUM: Jurnal Ilmu Pertanian Vol 17, No 3 (2012)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

AbstractThe research of grafting methyl methacrylate (MMA) onto Cyclic Natural Rubber (CNR) has been carried out. Benzoyl Peroxide (BPO) was used as a inisiator and temperature condition at 90oC with variation of time 1 and 2 hours. Grafting process was done with technique of reflux in a tree-neck flask with condenser and oil bath. Spectra analysis FTIR performed for determine the presence of grafted MMA on the backbone of CNR. The results showed that the product CNR-g-MMA was formed with the marked appearance of the absorption peak wave numbers at 1731 and 1730 cm-1 (carbonyl group absorption) typical for carbonyl (C = O) of metal methacrylate. The degree of grafting increased with the increasing time grafting.Keywords: grafting, cyclic natural rubber, mathylmetacrilate, benzoyl peroxide

PENCANGKOKAN METIL METAKRILAT PADA KARET ALAM SIKLIS DENGAN INISIATOR DIKUMIL PEROKSIDA: EFEK KONSENTRASI MONOMER Asmara Sari Nasution; Efi Said; Eddiyanto ,; M. Said Siregar
AGRIUM: Jurnal Ilmu Pertanian Vol 19, No 1 (2014)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

The research of grafting methyl methacrylate onto Cyclized Natural Rubber has been carried out. Dicumyl Peroxide was used as a inisiator and temperature condition at 90oC with variation of time 1 and 2 hours. Grafting process was done with technique of reflux in a tree-neck flask with condenser and oil bath. Spectra analysis FTIR performed for determine the presence of grafted MMA on the backbone of CNR. The results showed that the product CNR-g-MMA was formed with the marked appearance of the absorption peak wave numbers at 1731 cm-1 (carbonyl group absorption) typical for carbonyl (C = O) of methyl methacrylate. The degree of grafting increased with the increasing time grafting.Keywords: grafting, cyclic natural rubber, mathylmetacrilate, dicumyl peroxide

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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