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Muhammad Syahrir
FMIPA Universitas Negeri Makasar
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Pengaruh Suhu Dan Waktu Pemanasan Terhadap Stabilitas Pigmen Antosianin Ekstrak Asam Sitrat Kulit Buah Naga Merah (Hylocereus polyrizus) Dan Aplikasi Pada Bahan Pangan Nasrullah Nasrullah; Halimah Husain; Muh. Syahrir
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 22, No 1 (2021): Jurnal Chemica
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (580.416 KB) | DOI: 10.35580/chemica.v22i1.21728

Abstract

ABSTRAKPenelitian ini merupakan penelitian eksperimen bertujuan untuk mengetahui stabilitas ekstrak pigmen antosianin kulit buah naga merah (Hylocereus polyrizus) terhadap suhu dan waktu pemanasan serta ketahanan warna antosianin kulit buah naga merah pada bahan pangan. Ekstraksi kulit buah naga merah dilakukan dengan metode maserasi menggunakan pelarut asam sitrat 10% : air (6:1). Pengaruh suhu 400C, 500C dan 600C terhadap stabilitas pigmen antosianin dilakukan pada rentang waktu 5 menit, 15 menit, 30 menit, 45 menit dan 60 menit. Selanjutnya dilakukan pengukuran absorbansi sampel pada spektrofotometer UV-Vis dengan λ maks 520,00. Data hasil pengukuran menunjukkan bahwa pigmen antosianin stabil pada rentang suhu 400C - 500C dengan lama pemanasan 30 menit, 45 menit dan 60 menit. Kata Kunci : Kulit buah naga merah,  suhu, waktu.ABSTRACT            This research is an experimental study with aim’s to know the stability of anthocyanin pigment extract from red dragon fruit skin (Hylocereus polyrizus) on temperature, heating time and the anthocyanin color resistance of red dragon fruit skin on foodstuffs. Extraction of dragon fruit skin was done by maceration method using 10% citric acid solvent: water (6: 1). The effect of temperature of 400C, 500C and 600C on the stability of anthocyanin pigments was carried out in the time range of 5 minutes, 15 minutes, 30 minutes, 45 minutes and 60 minutes. Then the absorbance measurements of the samples in UV-Vis spectrophotometer were carried out with λ max 520.00. The measoroment result showed that anthocyanin pigment is stable on the temperature range 400C - 500C with heating time of 30 minutes, 45 minutes and 60 minutes.             Keywords: Red dragon fruit skin, temperature, time.
Pengaruh Kemasan Terhadap Lama Penyimpanan Makanan Khas Tradisional Bugis-Makassar ”BAJE” Sitti Faika; Muhammad Syahrir; Muhammad Danial
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 11, No 1 (2010)
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemica.v11i1.387

Abstract

ABSTRAK Penelitian ini merupakan penelitian eksperimen di laboratorium dengan menggunakan uji organoleptik, berdasarkan hasil penelitian diperoleh hasil bahwa  makanan Baje yang dikemas dengan plastik memiliki lama penyimpanan lebih lama dibanding dengan lama penyimpanan makanan yang dikemas dengan daun pisang kering dan daun jagung kering serta  kertas minyak. Makanan yang dikemas dengan plastik memiliki umur simpan selama 5 hari dengan kondisi rasa manis, warna, aroma, dan tekstur cenderung stabil. Sedang makanan yang dikemas dengan daun pisang kering, daun kulit jagung, dan kertas minyak hanya dapat dilakukan penyimpanan makanan khas Bugis-Makassar ”Baje’  masing-masing  4 dan 5 hari dan cenderung menjadi tidak stabil. Kelebihan dari Baje yang dikemas dengan daun jagung dan daun pisang kering cukup digemari atau disukai warnanya oleh panelis dengan masing-masing 57,14 % suka dan  64,29 % sangat suka pada hari pertama uji coba tetapi sudah mulai berkurang tingkat kesukaan panelis pada hari ketiga dan kelima uji coba. Kata kunci; Baje, kemasan makanan, makanan tradisional ABSTRACT This research is a laboratory experiment using sensory test, according to the research results that Baje foods  are packed with plastic  has a longer storage time compared with the old food storage is packed with dried banana leaves and dry corn leaves  and paper oil. Foods that are packaged with plastics have a shelf life of over five days with the condition of the sweet taste, color, flavor, and texture tend to be stable. The food was packed with dried banana leaves, corn leaves, bark, paper oil can only be carried out larder typical Bugis-Makassar "Baje 'respective fourth and fifth days and tends to become unstable. Baje excess of maize leaves are packed with dried banana leaves and seemed very popular, or preferred color by each panelist with 57.14% and 64.29% prefer really like on the first day of trial, but had begun to decrease the level of the panelist's favorite on the third day and fifth trials. Key words; Baje, packaged food, traditional food
Sinthesis of Bentonite-Fe2O3 Composite and the Application in Photodegradation of Phenol Solution Musdalifah Musdalifah; Muhammad Syahrir; Suriati Eka Putri
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 23, No 2 (2022): Chemica
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.506 KB) | DOI: 10.35580/chemica.v23i2.35346

Abstract

ABSTRAKPenelitian ini adalah penelitian eksperimen yang bertujuan untuk mengetahui karakteristik komposit bentonit-Fe2O3 hasil sintesis dan mengetahui pengaruh waktu penyinaran terhadap kemampuan komposit bentonit-Fe2O3 dalam fotodegradasi fenol. Aktivasi bentonit dengan menggunakan HCl dan dikarakterisasi menggunakan XRD dan komposit bentonit-Fe2O3 disintesis menggunakan metode impregnasi dan dikarakterisasi menggunakan instrumen XRD dan SEM-EDX. Fotodegradasi fenol konsentrasi 10 ppm pada variasi waktu penyinaran 60 menit ; 120 menit ; 180  menit ; 240 menit ; 300 menit. Pengukuran hasil fotodegradasi fenol menggunakan Spektrofotometer UV-Vis pada Panjang gelombang 270 nm. Hasil karakterisasi menggunakan XRD pada bentonit teraktivasi menunjukkan kesesuaian puncak 2θ dengan montmorillonit. Pada difraksi bentonit-Fe2O3 terdapat puncak baru yang terindikasi Fe2O3 menunjukkan bahwa komposit bentonit-Fe2O3 telah tersintesis. Karakterisasi morfologi menggunakan SEM-EDX menunjukkan bahwa pembentukan partikel Fe2O3 yang ditandai dengan hasil EDX dengan persentase Fe sebesar 12,77 % dan O sebesar 57,76 %. Komposit bentonit-Fe2O3 mampu mendegradasi fenol pada konsentrasi 10 ppm sebesar 45,70 % pada waktu optimum 180 menit. Sedangkan padakonsenntrasi yang sama kemampuan fotodegradassi bentonit adalah sebesar 1,22 %,. Hal ini menunjukkan bahwa kemampuan fotodegradasi bentonit-Fe2O3 lebih besar dibandingkan bentonit.Kata Kunci : Komposit bentonit-Fe2O3, Fotokatalis, Fotodegradasi, Fenol.ABSTRACTThis research is an experimental study that aims to determine the characteristics of the synthetic bentonite-Fe2O3 composite and to determine the effect of irradiation time on the ability of bentonite-Fe2O3 composite in phenol photodegradation. Activation of bentonite using HCl and characterized by XRD and bentonite-Fe2O3 composite was synthesized using impregnation method and characterized by XRD and SEM-EDX instruments. Photodegradation with concentration of phenol at 10 ppm and irradiation time variation at 60, 120, 180, 240 and 300 minutes. Measurement of photodegradated phenol using a UV-Vis Spectrophotometer at a wavelength of 270 nm. The results of characterization by XRD on activated bentonite showed that the suitability of the 2θ peak with montmorillonite. In that bentonite-Fe2O3 diffraction there is a new peak indicated by Fe2O3 indicating that the bentonite-Fe2O3 composite has been synthesized. Morphological characterization using SEM-EDX showed that the formation of Fe2O3 particles was indicated by the EDX results with the percentage of Fe of 12.77% and O of 57.76%. Bentonite-Fe2O3 composite was able to degrade phenol at a concentration of 10 ppm by 45,70% at an optimum time of 180 minutes. Meanwhile, at the same concentration, the photodegradation ability of bentonite is 1.22%. This show that the photodegradation ability of bentonite-Fe2O3 is greater than of bentonite. Keyword :Bentonite-Fe2O3 composite, Photocatalyst, Photodegradation,  Phenol.
PKM PENYUSUNAN TES KOGNITIF BERBASIS HOTS BAGI GURU SDN PETAKEANG GALUNG KABUPATEN MAMUJU Muhammad Danial; Taty Sulastri; Muh. Syahrir; Wahidah Sanusi; Musliati Musliati
Seminar Nasional Pengabdian Kepada Masyarakat SEMINAR NASIONAL 2022:PROSIDING EDISI 8
Publisher : Seminar Nasional Pengabdian Kepada Masyarakat

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Abstract

Abstrak. Tujuan PKM ini  adalah guru memahami  tentang: (1) prinsip instrumen tes kognitif berbasis HOTS (High Order Thinking Skill: keterampilan berpikir tingkat tinggi), (2) langkah-langkah teknis penyusunan instrumen tes kognitif berupa soal-soal berbasis HOTS, (3) memahami komponen-komponen yang harus terdapat dalam instrumen tes kognitif berbasis HOTS, (4) terampil menyusun instrumen tes kognitif berbasis HOTS, dan (5) menghasilkan produk instrumen tes kognitif berbasis HOTS. Metode yang digunakan  untuk  mencapai  tujuan  tersebut adalah:  pemaparan materi tentang  prinsip dan penyusunan instrumen tes kognitif berbasis HOTS oleh Tim Pengabdi, praktik penyusunan instrumen tes kognitif berbasis HOTS oleh peserta  pelatihan,  presentasi produk/hasil naskah soal-soal berbasis HOTS oleh peserta perwakilan, pengamatan dan pengisian angket peserta setelah kegiatan PKM ini dilaksanakan. Peserta kegiatan ini adalah guru Sekolah Dasar Negeri Petakeang Galung Kecamatan Tapalang Kabupaten Mamuju yang berjumlah 20 orang. Hasil kegiatan PKM ini adalah peserta pelatihan: (1) memahami prinsip instrumen tes kognitif berbasis keterampilam berpikir tingktat tinggi (High Order Thinking Skill; HOTS), (2) memahami langkah-langkah teknis penyusunan instrumen tes kognitif berupa soal-soal berbasis HOTS, (3) memahami komponen-komponen yang harus terdapat dalam instrumen tes kognitif berbasis HOTS, (4) keseluruhan peserta terampil menyusun instrumen tes kognitif berbasis HOTS, dan (5) menghasilkan produk instrumen tes kognitif berbasis HOTS, serta (6) peserta pelatihan sangat antusias mengikuti kegiatan worhshop penyusunan soal-soal kognitif berbasis HOTS dan merespon positif kegiatan ini dengan mengatakan bahwa kegiatan Program Kemitraan Masyarakat (PKM) ini sangat bermanfaat kaitannya dengan perbaikan kualitas pembelajaran di Sekolahnya. Kata kunci: Instrumen tes kognitif, HOTS
Synthesis and characterization of bioplastics made from chitosan combined using glycerol plasticizer Hasri Hasri; Muhammad Syahrir; Diana Eka Pratiwi
Indonesian Journal of Fundamental Sciences Vol 7, No 2 (2021)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.814 KB) | DOI: 10.26858/ijfs.v7i2.26348

Abstract

Utilization of taro tuber starch bioplastic as an alternative solution to reduce environmental pollution due to synthetic plastic waste is non-toxic if contaminated with food and environmentally friendly because it can be decomposed by microorganisms. This study aims to determine the bioplastic characteristics of taro tuber starch with the addition of glycerol and chitosan plasticizers. Characterization of bioplastics through biodegradation, water resistance, elongation, and functional group analysis using FTIR. The results of the study of bioplastics with glycerol plasticizers have thickness values in the range of 0.10 mm – 0.20 mm, water resistance values in the range of 15.09% - 66.04%, tensile strength values in the range of 6.9939 MPa – 9.4746 MPa, elongation values. in the range of 4.99% - 8.47%, biodegradation in the range of 48.30% for 12 days. The resulting bioplastic has a thickness value in the range of 0.10 mm to 0.20 mm based on JIS standards, the thickness value of taro starch bioplastic has met the standard and the tensile strength value of the sorbitol plasticizer has met SNI
Sintesis dan Karakterisasi Bioplastik dari Pati Biji Nangka (Artocarpus heteropyllus) dengan Penguat CMC (Carboxy Methyl Cellulose) Sulfi Indriani; Mohammad Wijaya; Muhammad Syahrir
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 24, No 1 (2023): CHEMICA
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.669 KB) | DOI: 10.35580/chemica.v24i1.43981

Abstract

ABSTRAK          Penelitian ini bertujuan untuk mengetahui pengaruh penambahan CMC terhadap karakteristik bioplastik dari pati biji nangka.Tahap penelitian meliputi preparasi sampel, pembuatan bioplastik dan karakterisasi yang meliputi biodegradasi dengan metode Soil Burial Test, ketahanan air, ketahanan panas, kuat tarik dan elongasi dengan Universal Testing Mechine, serta gugus fungsi dengan FT-IR dan morfologi permukaan dengan instrument SEM. Bioplastik yang diperoleh berwarna bening. Variasi komposisi CMC 0%-15% mempengaruhi karakteristik bioplastik yang dihasilkan meliputi biodegradasi 32,66-74,69% , ketahanan air 15,26-93,91%, ketahanan panas 58,33-93°C, kuat tarik 0,7642-2,4549 N/mm2 dan elongasi 6,06-14,25%. Komposisi variasi CMC berbanding lurus dengan persen degradasi dan kuat tarik, serta berbanding terbalik dengan ketahanan air dan ketahanan panas. Hasil identifikasi gugus fungsi FTIR pada bilangan gelombang 3286,63 cm-1 yang mengindikasikan adanya gugus O-H, pada bilangan gelombang 2924,29 cm-1 mengindikasikan adanya gugus C-H, sedangkan pada bilangan gelombang 999,34 cm-1 menunjukkan adanya gugus C-O, pasa bilangan gelombang 1331,59 cm-1, 1416,82 cm-1 dan 1589,79 cm-1 mengindikasikan adanya senyawa aromatik sederhana dan pada bilangan gelombang 702,96 cm-1 mengindikasikan adanya gugus C=C. Morfologi permukaan bioplastik tidak rata dengan adanya retakan dan sisa partikel pati yang tidak larut sempurna. Kata Kunci: Sintesis, Karakterisasi, Bioplastik, Biji Nangka, CMC ABSTRACT          This study aims to determine the effect of the addition of CMC on the bioplastic characteristics of jackfruit seed starch. The research phase includes sample preparation, bioplastic manufacture and characterization which included biodegradation with Soil Burial Test method, water resistance, heat resistance, tensile strength and elongation with the Universal testing Mechine, as wel as fungsional groups with FT-IR and surface morphology with the SEM instrument. The obtained bioplastic is clear. Variations in the composition of CMC 0%-15% affect the characteristics of the resulting bioplastics including biodegradation 32.66-74.69%, water resistance 15.26-93.91%, heat resistance 58.33-93°C, tensile strength 0.7642 -2.4549 N/mm2 and elongation 6.06-14.25%. The composition of the CMC variation is directly proportional to the percent degradation and tensile strength, and inversely proportional to the water resistance and heat resistance. The results of the identification of the FTIR functional group at a wave number of 3286.63 cm-1 which indicates the presence of an O-H group, at a wave number of 2924.29 cm-1 indicates the presence of a C-H group, while at a wave number of 999.34 cm-1 it indicates the presence of a C-O group. wave numbers 1331.59 cm-1, 1416.82 cm-1 and 1589.79 cm-1 indicated the presence of simple aromatic compounds and at wave numbers 702.96 cm-1 indicated the presence of a C=C group. The surface morphology of bioplastics is uneven with cracks and residual starch particles that are not completely dissolved.Keywords: Synthesis, Characterization, Bioplastic, Jackfruit, CMC
Analisis dan karakteristik hidrokarbon normal alkana pada sedimen pantai Makassar Muhammad Syahrir; Hasri Hasri; Pince Salempa
Seminar Nasional LP2M UNM Prosiding Edisi 2
Publisher : Seminar Nasional LP2M UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.388 KB)

Abstract

Based on salinity and water temperature quality standards at number of station locations are still within the specified quality standard range, except at station 7 (TL3) Tello River Estuary, with a very high level of supply of contaminants from organic waste, because it is a watershed from TPAS Antang, waste from PLTU activies and heavy motorized vehicle traffic lanes and the existence of Makassar Industrial Zone (KIMA). The highest turbidity at station 8 (TL2) located in the vicinity of the Tello River Upper based on quality standards has shown a high level of pollution because it is close to the PLTU and motorized vehicle traffic lanes, while the lowest turbidity content at station 3 (AK1) is located around recreation areas / Akkarena Beach) still meets the conditions set. The results of hydrocarbon fractionation by column chromatography using silica gel: alumina (1:1) and each sediment station showed varying levels of aliphatic fractions containing various hydrocarbons. The THK/EBO values vary where the lowest station 6 (TR2) is located near the Makassar Transtudio Mall and the highest station 5 (TR1) which is also located near Makassar Transtudio Mall. This means that microorganism activity high enough to degrade hydrocarbons in the station area. The F1/F2 ratio results also show varying values at each sediment are highest, which indicates that station 1 (JB4) sediment and station 4 (AK2) sediment are the highest, which indicates that station 1 (JB4) sediments are sourced from anthropogenic processes while station 4 (AK2) sediments sourced from not anthropogenic, which occurs through natural processes.
Pengaruh pH Awal Larutan dan Massa Komposit Zeolit-PbO terhadap Fotodegradasi Zat Warna Congo-Red Aulia Rahma; Suriati Eka Putri; Muhammad Syahrir; Nita Magfirah Ilyas; Sumiati Side
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 24, No 2 (2023): CHEMICA
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemica.v24i2.56096

Abstract

ABSTRAKTujuan dari penelitian ini adalah untuk mengetahui morfologi komposit zeolit-PbO, pengaruh pH awal larutan dan massa komposit zeolit-PbO dalam mendegradasi zat warna congo red (CR). Penelitian ini merupakan penelitian eksperimen dengan tahapan yakni aktivasi zeolit, sintesis komposit zeolit-PbO dengan metode impregnasi, analisis morfologi zeolit-PbO menggunakan instrumen SEM-EDX, serta penentuan pH awal larutan dan massa komposit zeolit-PbO dalam mendegradasi zat warna CR menggunakan instrumen UV-Vis. Hasil penelitian menunjukkan morfologi zeolit yang menggumpal dengan adanya PbO yang tersebar secara acak. Komposit zeolit-PbO mampu mendegradasi zat warna CR yang diradiasi dengan sinar UV dengan pH awal larutan pada pH 5 dan massa optimum komposit zeolit-PbO yaitu 300 mg dengan persentase degradasi sebesar 93,36%.Kata Kunci:  Fotodegradasi, Komposit, Congo RedABSTRACTThe purpose of this study was to determine the morphology of the zeolite-PbO composite, the effect of the initial pH of the solution and the mass of the zeolite-PbO composite in degrading the congo red (CR) dye. This research is an experimental research with the stages of zeolite activation, synthesis of zeolite-PbO composite by impregnation method, morphological analysis of zeolite-PbO using SEM-EDX instrument, and determination of initial pH of solution and mass of zeolite-PbO composite in degrading CR dyes using UV-Vis instrument. The results showed that the zeolite morphology was agglomerated in the presence of randomly dispersed PbO. The zeolite-PbO composite was able to degrade CR dyes irradiated with UV light with an initial pH of the solution at pH 5 and the optimum mass of the zeolite-PbO composite was 300 mg with a degradation percentage of 93.36%.Key Words:  Photodegradation, Composite, Congo Red
Co-Authors Angriyani Ahmad Astri Wiyani GM Aulia Rahma Diana Eka Pratiwi Diana Eka Pratiwi Eka Bungin Kadola Elok Faiqoh Hasri Hasri Hasri Hasri Mohammad Wijaya Muhammad Anwar Muhammad Danial Muhammad Danial Muhammad Danial Muhammad Yunus Musdalifah Musdalifah Musliati Musliati Nasrullah Nasrullah Netti Herawati Nita Magfirah Ilyas Nita Maghfirah Ilyas Nur Indah Sari Nurfitri Nurfitri Nurul Hidayat Aprilita Nuryono Nuryono Pince Salempa Rina Pratiwi Pudja I. A Sitti Faika Sulfi Indriani Sumiati Side Suriati Eka Putri Suriati Eka Putri Suriati Eka Putri Taty Sulastri Wahidah Sanusi