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All Journal Jurnal Riset Kimia CHEMPUBLISH JOURNAL Jurnal Zarah Akta Kimia Indonesia Jurnal Hilirisasi IPTEKS (JHI) Molekul: Jurnal Ilmiah Kimia Jurnal Kimia Unand
Salim, Emil
Andalas University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry Education Energy Engineering Health Professions Materials Science & Nanotechnology Public Health Veterinary Other

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PREPARASI DAN MODIFIKASI KIMIA STRUKTUR KITOOLIGOSAKARIDA-2,5-ANHIDRO-D-MANNOFURANOSA (KOSAMF) DARI KITOSAN SERTA UJI ANTIBAKTERI TERHADAP Staphylococcus aureus DAN Escherichia coli Emil Salim; Hasnirwan -; Sanusi Ibrahim; Afrizal -
Jurnal Riset Kimia Vol. 9 No. 2 (2016): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v9i2.279

Abstract

Kitooligosakarida-2,5-anhidro-D-mannofuranosa (KOSamf) dipersiapkan dengan derajat polimerisasi tertentu melalui reaksi nitrous deaminasi dari kitosan parsial N-deasetilasi. KOSamf kemudian diubah menjadi turunan KOSamf dengan mengkopling gugus aldehid yang terdapat pada unit 2,5-anhidro-D-mannofuranosa (amf). KOSamf dengan 3,5-dikloroanilin dan NaBH3CN dalam pelarut buffer ammonium asetat direaksikan melalui metoda one-pot aminasi reduktif untuk menghasilkan turunan KOSamf yang berpotensi sebagai senyawa antibakteri dan antijamur. Struktur kimia dari turunan KOSamf yang telah disintesis dikarakterisasi dengan Spektroskopi FT-IR dan NMR. Senyawa turunan KOSamf memiliki aktivitas sebagai antibakteri terhadap bakteri Staphylococcus aureus dengan zona inhibisi 12,5 mm dan bakteri E. coli dengan zona inhibisi 10,5 mm.
STUDI OPTIMASI EKSTRAKSI KANDUNGAN SENYAWA FENOLIK TOTAL DAN UJI AKTIVITAS ANTIOKSIDAN DARI DAUN MANGGIS (Garcinia mangostana Linn.) Emil Salim; Yogi Afritunando; Nindi Antika Febriana; Mai Efdi
Jurnal Riset Kimia Vol. 10 No. 1 (2019): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v12i2.308

Abstract

This study aims to determine antioxidant activity and total phenolic content of mangosteen leaves in several different solvents. The antioxidant activity test of the extract was determined by the DPPH method and the total phenolic content was determined by the Folin-Ciocalteu method. The phytochemical test of mangosteen leaves showed the presence of phenolic compounds, saponins, triterpenoids and alkaloids. The extraction results increase with increasing water content in methanol, ethanol and acetone. The highest amount of extract was obtained using 50% acetone solvent (34.98 ± 0.17%). Extraction using 100% ethanol showed the highest total phenolic content (614.25 ± 5.58 mg GAE / g extract) and the lowest IC50 value (5.81 mg / L). The results of this study indicate that the use of 50% acetone solvent can optimize the amount of extract and 100% ethanol can optimize the content of total phenolic compounds and antioxidant activity of mangosteen leaves.
Analisis GC-MS ekstrak tanaman terfermentasi (ETT) dari kulit buah jengkol (Pithecellobium jiringa Prain) Refilda Suhaili; Lucy Prima Ardi; Emil Salim; Mai Efdi
CHEMPUBLISH JOURNAL Vol. 5 No. 1 (2020): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v5i1.7957

Abstract

Analysis of active compounds in fermented plant extract (FPE) from the ngapi nut peel using Effective Microorganism-4 (EM-4) has been done by Gas Chromatography-Mass Spectroscopy (GC-MS). There were 88 compounds found in fermented plant extract, the major content with the area above 1% were 7 compounds such as succinic acid; ethyl hydrogen succinate; 1,2,3-benzetriol; 3,3-dimethylhexanal; L-proline, 1-methyl-5-oxo-methyl ester; 3-methoxycinnamic acid and hexadecanoic acid. Based GC-MS analysis, fermented plant extract indicated that several compounds that have potential as biopesticides.
Synthesis of Polystyrene Sulfonate and Its Characterization as a Polymer Electrolyte Membrane Emil Salim; Afrizal Afrizal; Zilfadli Zilfadli
Akta Kimia Indonesia Vol 6, No 2 (2021)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v6i2.10916

Abstract

This study aims to synthesize polystyrene sulfonate (PSS) from polystyrene (PS) isolated from waste styrofoam. Sulfonation reaction of polystyrene was conducted using acetyl sulfonate as sulfonating agents with variation times and temperatures. The sulfonated products were characterized using FT-IR spectrophotometer, degree of sulfonation, cation exchange capacity, water uptake and thermal stability. The FTIR spectrums show vibration of O-H streching at wave number 3300-3400 cm-1, S=O streching at the wave number 1050-1200 cm-1 which indicates the presence of sulfonate groups. Sulfonation reaction at 40oC for 2 hours (SPS-40-2) gives the highest degree of sulfonation, cation exchange capacity, water uptake with values 1,960%, 0.1880 meq/gr, 9.04% respectively. Thermal gravimetry analysis shows that polystyrene sulfonate has better thermal stability than polystyrene.
PENENTUAN KANDUNGAN FENOLIK TOTAL, SIFAT ANTIOKSIDAN DAN TOKSISITAS DARI EKSTRAK KULIT BATANG RENGAS (Gluta renghas L.) Emil Salim; Adlis Santoni; Nindi Antika Febriana
Jurnal Zarah Vol. 8 No. 2 (2020): Jurnal Zarah
Publisher : Jurnal Zarah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v8i2.2416

Abstract

Tujuan penelitian ini untuk menentukan jumlah kandungan fenolik total, sifat antioksidan dan toksisitas dari ekstrak kulit batang rengas (Gluta renghas L.). Sampel kulit batang rengas diekstraksi secara bertahap menggunakan pelarut n-heksan, etil asetat dan metanol pada temperatur ruang. Jumlah kandungan fenolik total ditentukan dengan metode Folin-Ciocalteau, sifat antioksidan ditentukan dengan metode DPPH (1,1-diphenyl-2-pycrilhydrazil), dan sifat toksisitas ditentukan dengan metode BSLT (Brine Shimp Lethality Test). Ekstrak metanol kulit batang rengas memiliki kandungan fenolik total paling tinggi (20,042 mg GAE/g ekstrak kering) dibandingkan ekstrak etil asetat dan n-heksan. Sifat antioksidan dari ekstrak metanol dan etil asetat tergolong sangat kuat dengan nilai IC50 12,252 mg/L dan 48,151 mg/L secara berturut-turut, sedangkan ekstrak n-heksan besifat lemah dengan nilai IC50 206,06 mg/L. Sifat toksisitas kulit batang rengas menunjukkan bahwa semua ekstrak bersifat toksik, dimana ekstrak metanol memiliki sifat toksisitas paling kuat dengan nilai LC50 54,113 mg/L. Senyawa aktif dari ekstrak kulit batang rengas ini selanjutnya dapat dilakukan isolasi untuk mengetahui strukturnya.
Teknik Edible Coating dengan menggunakan Campuran Gel Lidah Buaya dan Ekstrak Daun Psidium guajava L. untuk Mempertahankan Sifat Fisikokimia Buah Jambu Biji Refilda Refilda; Riga Habib Ngestu; Emil Salim; Yefrida
Jurnal Riset Kimia Vol. 13 No. 2 (2022): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v13i2.501

Abstract

The synthetic chemicals is a common substance used to extend the shelf life of postharvest fruit. But it can have health impact. The use of edible coatings from natural ingredients has begun to be developed. Modification of aloe vera gel by guava leaf extract as the edible coating to increase guava fruit shelf life has not been reported yet. Guava fruit coated by several compositions of aloe vera gel and guava leaf extract have been carried out. Observations on physichochemical in fruit on the days 0, 3, 6, 9, 12 and 15 were evaluated. The best quality found on guava fruit treated with the compotition of aloe vera gel:ethanol guava leaf extract: CMC:glycerol (90: 5:0.25: 0.5) on the day 15. It had a weight loss of 9.88%, a spoilage of 3.33%, the decrease of water content 11.61%, titratable acidity 0.5%, total antioxidant 1.08 mg AA/g FW, total phenolic 0.51 mg GAE/g FW, and increase of total dissolved solids 3.01 oBrix. This result was significantly better than the uncoated fruit. It can be concluded that guava leaf extract can be used to maintain the physicochemical properties during storage.
Potensi Antimikroba dan Toksisitas Minyak Atsiri yang Diisolasi dari Biji Jintan (Carum carvi L.) Suryati Suryati; Emil Salim; Gustia Elizar
Jurnal Riset Kimia Vol. 13 No. 2 (2022): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v13i2.551

Abstract

Caraway (Carum carvi L.) is one of the oldest medicinal plants found in various countries such as West Asia, North Africa, Pakistan, India, North America, Northern Europe, Iran, Russia, and Indonesia. This plant has been use for traditional medicines to treat digestive disorders, flatulence, colic in infants, headaches, coughs, hypertension, eczema, pneumonia, diabetes, scabies, mouthwash and as an antiseptic. This plant is reported to contain around 1-9% essential oil in the seeds with various components and potential as bioactive compounds. In this study, essential oils were isolated from caraway seeds and determined their chemical content as well as their antimicrobial and toxicity. Isolation of essential oils was carried out by hydrodistillation and analysis of the chemical components of the isolated essential oils was carried out using the Gas Chromatography-Mass Spectrometry (GC-MS) method. The results of the GC-MS analysis showed the presence of 35 compounds with four main compounds, namely carvone (62.54%), limonene (23.39%), and trans-dihydrocarvone (8.20%). The antimicrobial activity test was carried out using the disc diffusion method, which showed strong activity against Staphylococcus aureus at a concentration of ≥75%, and against the fungus Candida albicans. The results of the toxicity test using the Brine Shrimp Lethality Test (BSLT) method showed that caraway seed essential oil was low toxic against Artemia salina Leach shrimp larvae with an LC50 value 568.3292 mg/L.
Isolasi Senyawa Metabolit Sekunder dari Ekstrak Etil Asetat Daun Pulai (Alstonia scholaris (L.) R. Br.) berdasarkan Sifat Toksisitas dengan Metode BSLT (Brine Shrimp Lethality Test) Emil Salim; Suryati Suryati; Rini Ramadani; Wini Sukrila
Akta Kimia Indonesia Vol 7, No 2 (2022)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v7i2.14532

Abstract

Penelitian ini bertujuan untuk mengisolasi senyawa metabolit sekunder dari ekstrak etil asetat daun pulai (Alstonia scholaris) berdasarkan sifat sitotoksik terhadap larva udang Artemia salina. Pemisahan senyawa aktif dilakukan menggunakan kromatografi kolom, eluen petroleum eter:etil asetat (10:0-0:10) dan etil asetat:metanol (10:0–9:1), dan menghasilkan 8 fraksi (F1-F8). Fraction 6 paling aktif dengan nilai LC50 9,47 mg/L, kemudian direkromatografi dengan eluen petroleum eter:etil asetat (7:3) , diperoleh 5 sub-fraksi (F6.1-F6.5). Sifat toksisitas tertinggi ditunjukkan oleh subfraksi F6.5 dengan LC50 7,694 mg/L. Subfraksi F6.5 kemudian dimurnikan dan dikarkterisasi dengan UV dan FTIR. Senyawa hasil isolasi diketahui merupakan senyawa alkaloid.
PENGEMBANGAN PROSPEK USAHA TORTILLA CHIPS OLEH KELOMPOK TANI AUR SERUMPUN DI KECAMATAN SIMPANG ALAHAN MATI KABUPATEN PASAMAN PROVINSI SUMATERA BARAT Daimon Syukri; Nika Rahma Yanti; Emil Salim; Ismed Ismed; Cesar Wellya Refdi; Felga Zulfia Rasiana; Wellyalina Wellyalina; Novizar Nazir; Aisman Aisman
Jurnal Hilirisasi IPTEKS Vol 6 No 2 (2023)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v6i2.506

Abstract

The Aur Serumpun farmer group is one of the growing farmer groups with their corn farming business. This farmer group is in Simpang Alahan Mati District, Kab. Pasaman, West Sumatra Province. So far, farmers only sell corn that has been dried directly. The processing of corn is a basic need for members of farmer groups in order to have product diversification which can ultimately increase the economy of these farmers. In the community service activities that were carried out previously (in 2019), processed products from corn were introduced, namely tortilla chips. In the 2020-2022 activities, business development will be carried out from Aur Serumpun farmer groups in accordance with the policy directions set by the members of the farmer groups themselves. Therefore, a discussion group forum was held and the signing of a cooperation agreement regarding the study of the prospects for producing tortilla chips which would be carried out by the aur allied farmer groups. The development of food product production of trotilla chips is an independent initiative from farmer groups that can collaborate with academics in the Department of Agricultural Product Technology, Andalas University. It was agreed from the discussion group forum that the head of the farmer group would conduct a study and socialize to other members of the farmer group regarding alternative product diversification of the commonly produced corn commodity. Further evaluation of the prospects for the implementation of the tortilla chips production process will be carried out next year.
Analysis of Chemical Content, Cytotoxic and Anti-Bacterial Activity Essential Oil of Lantana Camara Linn Leaves from Various Regions Suryati suryati; Adlis Santoni; Bustanul Arifin; Norman Ferdinal; Emil Salim; Asri Amelia; Leidina Zein; Silfani Mairanti; Indah Putri Lestari
Molekul Vol 17 No 2 (2022)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2022.17.2.5143

Abstract

Lantana camara Linn is a family of Verbenaceae that grows in tropical and subtropical areas and spread in about 50 countries in the world. This plant contains essential oils with different contents based on the difference in the place of growth. The purpose of this study was to isolate and determine the chemical content of the essential oil of L. camara Linn leaves obtained from Agam, Tanah Datar, Kampar Regency, Padang Panjang City and to determine its cytotoxic and antibacterial activity. Isolation was carried out by hydro distillation method and chemical content analysis using Gas Chromatography-Mass Spectrometry (GC-MS). The high yield from the isolation of essential oil from leaves of L. camara Linn obtained from Tanah Datar Regency was 0.095% (w/w). The results of the analysis of the essential oil content with the main compounds for all Regency and City being caryophyllene with the high area percent was Tanah Datar Regency (19.74%). Cytotoxic activity test using the Brine Shrimp Lethality Test (BSLT) method showed that L. camara Linn essential oil was highly toxic with an LC50 value of 28.34 µg/mL from Padang Panjang City. Antibacterial activity test by disc diffusion method showed that L. camara Linn essential oil had moderate antibacterial activity againts Staphylococcus aureus and Escherichia coli bacteria, with high clear zone from Agam Regency was 12.9 mm and Tanah Datar Regency was 7.8 mm, respectively, at concentration of 100%.
Co-Authors -, Yefrida Adlis Santoni Afrizal - Afrizal Afrizal Aisman Aisman Asri Amelia Bustanul Arifin Cesar Wellya Refdi Daimon Syukri Felga Zulfia Rasiana Gustia Elizar Hasnirwan Hasnirwan Ikhsan Gusti Rilma Indah Putri Lestari Ismed Ismed Leidina Zein Lucy Prima Ardi Mai Efdi Nika Rahma Yanti Nindi Antika Febriana Nindi Antika Febriana Norman Ferdinal Novizar Nazir Refilda Refilda Refinel - Riga Habib Ngestu Rini Ramadani Sanusi Ibrahim Silfani Mairanti Suryati Suryati Suryati Suryati Wellyalina, Wellyalina Wini Sukrila Yogi Afritunando Zilfa Zilfa