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All Journal COPING (Community of Publishing in Nursing) Jurnal Veteriner Jurnal Energi Dan Manufaktur Jurna lAntropologi Indonesia Jurnal Ners Indonesia Jurnal Ilmu Manajemen (JIM) Komunikasi Fisika Indonesia JSM (Jurnal SIFO Mikroskil) Jurnal Online Mahasiswa (JOM) Bidang Ilmu Keperawatan Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JIKSI (Jurnal Ilmu Komputer dan Sistem Informasi) Holistic Journal Of Management Research Jurnal Perikanan dan Kelautan Annual Research Seminar PROSIDING SEMINAR KIMIA REPOSITORY KIMIA JURNAL PENDIDIKAN KEPERAWATAN INDONESIA Jurnal Kesehatan Gigi JOURNAL ONLINE OF PHYSICS Jurnal Kimia Mulawarman Jurnal Ilmiah Mahasiswa Veteriner EMPATI : JURNAL ILMU KESEJAHTERAAN SOSIAL Jurnal Mirai Management JISPO (Jurnal Ilmu Sosial dan Ilmu Politik) JST ( Jurnal Sains Terapan ) BIOEDUSCIENCE JURNAL EDUCATION AND DEVELOPMENT AkMen JURNAL ILMIAH JURNAL MathEdu (Mathematic Education Journal) Edumaspul: Jurnal Pendidikan Jurnal Hilirisasi IPTEKS (JHI) Jurnal Humaniora : Jurnal Ilmu Sosial, Ekonomi dan Hukum Menara Ilmu Jurnal Abdimas Mahakam Business Management Journal Program Studi Manajemen PRAJA: Jurnal Ilmiah Pemerintahan Jurnal Ilmu Manajemen Profitability Ranah Seni: Jurnal Seni dan Desain Ikhtisar: Jurnal Pengetahuan Islam Populer: Jurnal Penelitian Mahasiswa Jurnal Ilmiah MEA (Manajemen, Ekonomi, dan Akuntansi) The International Journal of Tropical Veterinary and Biomedical Research RechtIdee Jurnal Medika Nusantara Jurnal Medika Veterinaria Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Erwin Erwin
Jurusan Antropologi FISIP Universitas Andalas
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Journal : PROSIDING SEMINAR KIMIA

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PENAPISAN BAKTERI TERMOFILIK PENGHASIL AMILASE DARI SUMBER AIR PANAS DONDANG DI KECAMATAN MUARA JAWA Muhammad Taufik A. A. R; Winni Astuti; Erwin Erwin
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Amylase producing bacteria have been isolated from Dondang hot springs in Muara Jawa sub-district based on clear zone. Dondang hot springs became the site of the discovery of thermostable bacteria. Obtained 1 selected isolate showed amylase activity with the formation of clear zone around the colony on solid media containing 1% starch. Based on the morphology and physiology tests the selected isolates showed the genus Bacillus sp. The results showed total protein concentration of crude extract of enzyme from amylase producing bacteria isolate that is 2, 4068 μg /mL. Keywords: Thermophilic bacteria, amylase, clear zone, protein concentration.
UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIOKSIDAN PADA EKSTRAK BATANG BAKAU HITAM (Rhizophora mucronata Lam.) Sitorus Anna Margarettha; Erwin Erwin; Alimuddin Alimuddin
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Penelitian tentang uji fitokimia, toksisitas dan aktivitas antioksidan ekstrak kasar batang bakau hitam (Rhizophora mucronata Lam.) telah dilakukan. Penelitian ini dilakukan untuk mengetahui senyawa metabolit, dan aktivitas antioksidan pada ekstrak kasar metanol. Metode yang digunakan diantaranya uji fitokimia dilakukan dengan uji warna, uji toksisitas dilakukan dengan metode Brine Shrimp Lethality Test dan uji aktivitas antioksidan dengan menggunakan metode DPPH. Hasil uji fitokimia menunjukkan ekstrak kasar batang bakau hitam mengandung senyawa flavonoid, fenolik dan triterpenoid. Pada hasil uji toksisitas dari ekstrak kasar metanol memiliki nilai LC50 sebesar 420,9017 ppm dan hasil uji aktivitas antioksidan dari ekstrak kasar metanol memiliki nilai IC50 sebesar 119,432 ppm. Berdasarkan data tersebut dapat disimpulkan ekstrak kasar metanol dengan nilai LC50 memiliki tingkat toksisitas yang toksik dan nilai IC50 memiliki kekuatan aktivitas antioksidan sedang. Kata Kunci : Rhizophora mucronata Lam., Metabolit Sekunder, Brine Shrimp Lethality Test, Antioksidan, DPPH.
PEMBUATAN DAN KARAKTERISASI SULFONAT TERIMPREGNASI PADA SILIKA DARI ABU SEKAM PADI (RICE HUSK ASH) Nirwanto Pasuluran; Erwin Erwin; Noor Hindryawati
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Preparation of sulfonate silica as acid catalyshas been done with rice husk ash material using impregnation method. The process of making the catalyst was conducted on the extraction and impregnation. The results of the study were characterized using FT-IR spectrophotometer and SEM. Based on the FT-IR resultsthere is vibration from the group S=O at a wavelength of 1069.73 cm-1 is and pores on the surface of the silica filled by molecules of –SO3H Keywords: Silica,Rice Husk Ash, Impregnation
SKRINING FITOKIMIA DAN BIOAKTIVITAS EKSTRAK DAUN, BATANG DAN KULIT BATANG TANAMAN INSULIN (Smallanthus sonchifolius) Irna Febrianti; Erwin Erwin; Subur P. Pasaribu
PROSIDING SEMINAR KIMIA 2021: SEMINAR NASIONAL KIMIA 2021
Publisher : PROSIDING SEMINAR KIMIA

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Tanaman insulin (Smallanthus sonchifolius) merupakan salah satu tanaman dari famili Asteraceae yang telah dikenal dan dimanfaatkan oleh masyarakat Indonesia sebagai obat penyakit diabetes. Penelitian ini bertujuan untuk mengetahui golongan senyawa yang terkandung dalam ekstrak daun, batang dan kulit batang tanaman insulin (Smallanthus sonchifolius) serta menentukan tingkat toksisitasnya terhadap larva udang Artemia salina L. dengan metode Brine Shrimp Lethality Test (BSLT). Hasil yang didapatkan esktrak daun insulin mengandung senyawa metabolit sekunder golongan flavonoid, alkaloid dan steroid; ekstrak batang tanaman insulin mengandung senyawa metabolit sekunder flavonoid, alkaloid, fenolik dan kuinon; ekstrak kulit batang tanaman insulin mengandung senyawa metabolit sekunder flavonoid, alkaloid, saponin dan fenolik. Berdasarkan uji toksisitas, ekstrak daun dan batang tanaman insulin bersifat toksik dengan nilai LC50 berturut-turut 136,8674 ppm dan 52,6138 ppm sedangkan ekstrak kulit batang tanaman insulin bersifat sangat toksik dengan nilai LC50 27,7459 ppm. Kata kunci: Smallanthus sonchifolius, fitokimia, toksisitas, BSLT
UJI FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN EKSTRAK BATANG BAKAU API-API PUTIH (Avicennia alba Blume) Dedi Nuryadi; Erwin Erwin; Usman Usman
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Penelitian tentang uji fitokimia dan aktivitas antioksidan ekstrak batang bakau api-api putih (Avicennia alba Blume) telah dilakukan. Penelitian ini dilakukan untuk mengetahui senyawa metabolit dan aktivitas antioksidan pada ekstrak total metanol. Metode yang digunakan diantaranya uji fitokimia dilakukan dengan uji warna dan uji aktivitas antioksidan dengan menggunakan metode DPPH. Hasil uji fitokimia menunjukkan ekstrak total metanol batang bakau api-api putih mengandung senyawa flavonoid, kuinon, alkaloid, fenolik, steroid dan saponin. Sedangkan hasil uji aktivitas antioksidan dari ekstrak total metanol memiliki nilai IC50 sebesar 111,5966 ppm. Berdasarkan data nilai IC50 tersebut dapat disimpulkan ekstrak total metanol memiliki kekuatan aktivitas antioksidan lemah. Kata Kunci : Avicennia alba Blume., Metabolit Sekunder, Antioksidan, DPPH.
SKRINING FITOKIMIA DAN UJI TOKSISITAS EKSTRAK KASAR, FRAKSI N-HEKSANA, ETIL ASETAT, DAN METANOL-AIR DAUN KIRINYUH (Chromolaena odorata (L.) King & H.E Robins) Tri Riski Amalia; Djihan Ryn Pratiwi; Erwin Erwin
PROSIDING SEMINAR KIMIA Vol 1 No 1 (2022): Prosiding SNK 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Kirinyuh leaves (Chromolaena odorata (L.) King & H.E Robins) is one of the plants of the Asteraceae family that is commonly used by the community as a wound healing medicinal ingredient and has antioxidant and antibacterial activities. This research was conducted to determine the type of secondary metabolite compounds contained in the crude extract, n-Hexane, ethyl acetate and methanol-water fraction kirinyuh leaves (Chromolaena odorata (L.) King & H.E Robins) and determine the level of toxicity against to Artemia salina L. using the BSLT method. Phytochemical test results of crude extract leaves kirinyuh (Chromolaena odorata (L.) King & H.E Robins) contain alkaloids, flavonoids, steroids, and phenolics. The n-Hexane fraction contains steroids and quinones. The ethyl acetate fraction contains flavonoids and phenolics. The methanol-water fraction contains flavonoids, saponins and phenolics. Based on toxicity tests, crude extract, n-hexane, ethyl acetate fractions of kirinyuh leaves is highly toxic with successive LC50 values of 2.88 ppm, 8.12 ppm and 6.86 ppm, then the methanol-water fraction is toxic with an LC50 value of 186.76 ppm. Keywords: Kirinyuh leaves, phytochemicals, toxicity
SKRINING FITOKIMIA DAN UJI TOKSISITAS EKSTRAK KASAR DAUN NIPAH (Nypa fruticans Wurmb.) Sitti Fatimah AZ.; Erwin Erwin; Alimuddin Alimuddin
PROSIDING SEMINAR KIMIA Vol 1 No 1 (2022): Prosiding SNK 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Nipah (Nypa fruticans Wurmb.) is one of the plant family Arecaceae were known an used by society as a diabetes medicine, toothache, sprue and headaches. The aims of this research are to know the group of compound that containing in the extract of nipah’s leaf (Nypa fruticans Wurmb.) and determine the level of toxicity to the Artemia salina Linn. Color test and Brine Shrimp Lethality Test (BSLT) method were use for phytochemical screening and determine toxicity, respectively. The result of phytochemical screening indicate that crude extract of nipah’s leaf contains secondary metabolites of flavonoids, phenolics, saponins and steroids. The result of the toxicity test indicate that crude extract of nipah’s leaf with the LC50 20.89 ppm was very strong. Keywords: Nipah’s leaf, phytochemical and toxicity
PEMBUATAN DAN KARAKTERISASI EDIBLE FILM GALAKTOMANAN DARI BUAH NIPAH (Nypa fruticans Wurmb) DENGAN INKORPORASI EKSTRAK METANOL DAUN TAHONGAI (Kleinhovia hospita L.) SEBAGAI ANTIOKSIDAN Shintia Alifah R; Subur P. Pasaribu; Erwin Erwin; Aman Sentosa Panggabean
PROSIDING SEMINAR KIMIA Vol 1 No 1 (2022): Prosiding SNK 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Fabrication and characterization of edible films from galactomannan nipah fruit (Nypa fruticans Wurmb) with the incorporation of methanol extract of tahongai leaf (Kleinhovia hospita L.) as an antioxidant has been conducted. This study aims to determine the best concentration of methanol extract of tahongai leaves to increase the antioxidant activity of edible films using the DPPH (1,1-diphenyl-2-picrylhydrazyl) method. The results showed that the edible film containing galactomannan 1.5%, glycerol 25% and methanol extract of tahongai leaves with concentrations of 0%, 1%, 2%, 3% and 4% showed antioxidant activity with IC50 values of 224.02 mg/L, 215.82 mg/L, 153.51 mg/L, 129.48 mg/L and 107.87 mg/L respectively. The concentration of incorporation of methanol extract of tahongai leaves to produce the best edible film is 3% which increases antioxidant activity when compared to edible films without incorporation with properties having a moisture content of 15.04%, thickness of 0.21 mm, water vapor transmission of 43.70 g/m2/hour and SEM (Scanning Electron Microscopy) analysis showed the surface morphology was homogeneous and slightly rough. Keywords : Edible film; Galactomannan; Tahongai leaves; Antioxidant activity
Co-Authors Abd Hafiz Abd Salam Abdul Khoiruddin Abdul Rahim Ade Irwandi Ade R. Fajaryantie Afiqah Binti Abd Latif Al Azhar Alfian Konadi Alimuddin Alimuddin Aman Sentosa Panggabean Amelya Poaler Amiruddin . Andi Fatmawati Padri Hasanah Andrean Andrean Aninda Fitra Aulia Anis Munandar Ari Pristiana Dewi Asnita Purnama Asra Ilal Khairi Ayu Wahyuni Bayhakki Bayhakki Benny Prima Budianto Panjaitan Cicilia Dewi Cindy Lestari Cindy Yoel Tanesia cut nila tasmi Daniel Tarigan Dany Umbu Darwin Karim Dasrul Dasrul Dedi Kuswandi Dedi Nuryadi Deni Noviana Denny, Hanifa Maher Desi Wahyuni Devi Dianti Dian Masyitha Diasttri Wahyu Rahmah Day Dinda Jasmal Sikumbang Diyaa Aaisyah Salmaa Putri Atmaja Djihan Ryn Pratiwi Djihan Ryn Pratiwi Ekowati Handharyani Emini Emini Erfina Erfina Etriwati E Eva Marliana, Eva Fathra Annis Nauli Fernando Laurence Chandra Firman Syarief Fitri Jelita Fridarti, Fridarti Gamya Tri Utami Gunanti . Gunawan Wibisono Hamdan Hamdan Hamida Hamida Haritsah Hammamah Harahap HEFRI YUNALDI Hellena Deli Hendri Vinchen Herlina Herlina Hernawati Gohzali Hesti Helpiyani Hsiu Ju Chang Ida Rosanti Ika Yekti Liana Sari Indah Ashari Rahmadani Indah Sri Agustina Irawan W Kusuma Irawan W. Kusuma Irawan Wijaya Kusuma, Irawan Wijaya Irawati Irawati irfa Ashari Hyahara Irna Febrianti Irwan Irwan Islami, Syaifuddin Ismail Edfar Janson Hendryli Jeffrey Onggo Jendrius Jendrius Jumaini, Jumaini Juniar Ernawaty Ki Agus Dahlan Krisman Krisman Lendra Agustira Lina Lina Liza Oktafani M Hasan M Isa Mahardika Nastiti Malissa Kay Shaw Marlina, Devi Marwin Didik Antoro Maulidya Hafsari Fauzi Mediagus Mediagus Melinda Noer Melson Melson meutya silviana morow MHD. Ali Safitroh Mila Wati Mimi Susanti Mira Damayanti Monita Olivia Muh Nur R Muhammad Aththur Shadiq Muhammad Fathur Ridho Muhammad Hambal Muhammad Nur Alam Muhammad Taufik A. A. R Mulyadi Adam Musdalifah Musdalifah Muttaqien Muttaqien Muzayyanah Jabani Najmudin Med Nazaruddin Nazaruddin Nepta Yulita Nessya Fitriyona Nirwana Nirwana Nirwanto Pasuluran Noor Hindryawati Novitasari Wijayanti Silalahi Novredha Rahmadita Nur Sella Nurul Huda Nuzul Asmilia Octariana Toding Pabita Purbawati Purbawati Puspa Riani Nasution Putra Sunan Agung Rachmat Syahadat Raden Roro Soesatyoratih RAHMAT SYAHNI Rahmi Maulia Ratih Ellyza Putri Reztika Cahyani Rika Anggita Rini Widiyastuti Riri Novayelinda Rismadefi - Woferst Robi Mitra Rudi Febriamansyah Rusda Khairati Rusli Rusli Salam, Karta Negara Salomo Salomo Salomo Salomo SALSA ADELIA RAHMADANI Salsabila, Unik Hanifah Sandi Christopher Hutagalung Sandra Utama Putra Sangkot Hani Rizki Saparuddin Saparuddin Saputra, Edriagus Selma Laily Nur Afifa Septi Akhwi Fanni Septiana Anjora Shayrilia Ivanovanny Angesti Shintia Alifah R Sinar Dharmayana Putra Sitorus Anna Margarettha Sitti Fatimah AZ. Sofiana Nurchayati Sri Mulyani Sri Novi Restari Sri Wahyu Gusti Fajri Sri Wahyuni Steven Steven Subur P Pasaribu Sugito Sugito Sunario Megawan Sus Derthi Widyari Syafrizal Syafrizal Syafruddin Syafruddin Syafwan Syafwan Syahrizal Syahrizal t fadrial karmil Tasruddin Tasruddin Tini Suminarti Tjan Tjan Tri Isyani Tungga Dewi Tri Riski Amalia Tridian Novia Gelis Triva Murtina Lubis Tumpal J. R Sitinjak Tuti Afriani Ummu Balqis Untari Tejawati Usman Malik Usman Usman Utami Maulina Hutabarat Viny Christanti M Vivi Oktaviani Wendy Winata Wendy Winata Winarto Poernomo Winni Astuti Yandi Suprapto Yanuari Eka Fitri Yesi Hasneli Yesi Hasneli N Yoarga Arsindho Yuliani Setyaningsih Yurnalis Yurnalis Yusmaniar Yusmaniar Yuswardi Yuswardi Yuyun Karystin Meilisa Suade Yuyun Karystin Meilisa Suade Zainuddin Zainuddin Zihni Sharfina Darmizah Zubaidah A Zubaidah R, Zubaidah Zuhendri Zuhendri Zukhra, Ririn Muthia Zulkarnaen Zulkarnaen