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All Journal Journal of Food and Pharmaceutical Science Alchemy : Journal of Chemistry SAINSTIS Indonesian Journal of Cancer Chemoprevention Erudio: Journal of Educational Innovation Majalah Obat Tradisional MPI (Media Pharmaceutica Indonesiana) Pharmascience Journal of Islamic Pharmacy Science and Technology Indonesia Jurnal Farmasi Sains dan Komunitas Majalah Kesehatan FKUB FITOFARMAKA: Jurnal Ilmiah Farmasi Farmasis: Jurnal Sains Farmasi Medical Sains : Jurnal Ilmiah Kefarmasian Journal of Food and Pharmaceutical Sciences Borneo Journal of Pharmacy Journal of Tropical Pharmacy and Chemistry
Arief Suryadinata
Universitas Islam Negeri Maulana Malik Ibrahim Malang
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Physics Public Health

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Journal : Alchemy : Journal of Chemistry

 1 
OPTIMASI METODE PENENTUAN KADAR LOGAM TEMBAGA DAN TIMBAL DALAM GULA PASIR SECARA SPEKTROFOTOMETRI SERAPAN ATOM DENGAN DESTRUKSI MICROWAVE DIGESTION Dewi, Diana Candra; Fauziyah, Begum; Suryadinata, Arief; Annisa, Dewi; Afifah, Nurul
ALCHEMY ALCHEMY (Vol.2 No.2
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.983 KB) | DOI: 10.18860/al.v0i0.2884

Abstract

Tembaga (Cu) dan Timbal (Pb) adalah bahan ikutan yang ditemukan dalam gula pasir. Penelitian ini  bertujuan mengetahui performa analitik kurva standar dengan penentuan suhu dan waktu terbaik destruksi menggunakan microwave digestion, serta performa analitik kurva adisi standar menggunakan suhu dan waktu terbaik destruksi.Penelitian  ini  meliputi penentuan performa  analitik  untuk kurva  standar yaitu linearitas, batas deteksi dan batas kuantitasi, sensitivitas, akurasi serta presisi untuk larutan standar Cu dan Pb, kemudian dilakukan pendestruksian sampel gula pasir dengan destruksi basah menggunakan microwave digestion dengan variasi suhu 160, 180 dan 200 oC dan variasi waktu 10, 15, 20 dan 30 menit dan waktu penyimpanan 1 sampai 5 hari. Penentuan  performa  analitik  juga ditentukan pada  kurva adisi standar untuk larutan Cu dan Pb yang telah ditambahkan sampel hasil destruksi.Hasil penelitian menunjukkan bahwa : Suhu dan waktu terbaik destruksi gula pasir menggunakan microwave digestion untuk analisis Cu yaitu suhu 200 oC dan waktu 15 menit serta waktu penyimpanan sampai 3 hari. Suhu dan waktu terbaik microwave digestion untuk menganalisa logam timbal (Pb) adalah 180 0C dan 10 menit serta waktu penyimpanan hanya sampai 1 hari. Performa  analitik  untuk kurva  standar  tembaga (Cu) meliputi r2 = 0,9993; LOD (Limit of Detection) 0,0011 ppm dan LOQ (Limit of Quantitation) 0,0036 ppm;  sensitivitas 0,2; rata-rata akurasi sebesar 99.96%; serta presisi 9,46%, sedangkan performa  analitik  untuk  kurva  adisi  standar  tembaga (Cu)  meliputi  r2 = 0,9999; LOD 0,0012 ppm dan LOQ 0,004 ppm; sensitivitas 0,1729, rata-rata akurasi sebesar 100,07% serta presisi 5,38%. Performasi analitik untuk kurva standar timbal (Pb) meliputi r2 = 0,9999; LOD 0,0019 ppm,  LOQ 0,0066 ppm; sensitivitas 0,1069 ppm ; rata-rata akurasi sebesar 99,56 % serta presisi 2,32 %. Performasi analitik kurva adisi standar timbal (Pb) meliputi r2 = 0,9999; LOD 0,0018 ppm, LOQ 0,0060 ppm; sensitivitas 0,1090 ppm; rata-rata akurasi sebesar 100,01 % serta presisi 1,94 %.
Oil Extraction from Rice Bran with Various Solvents and Concentration of Crude Extract to Antioxidant Activity Suryadinata, Arief
ALCHEMY ALCHEMY (Vol.4, No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.21 KB) | DOI: 10.18860/al.v4i1.3152

Abstract

Rice bran contains components such as oryzanol antioxidants, tocopherols, tocotrienols, phytosterols, polyphenols, and squalene. Oryzanol is a very powerful antioxidant and oryzanol is only found in rice bran oil. This research aims to know the antioxidant activity of the extract chloroform:methanol in the bran and find the endurance of antioxidant against a wide variety of pH and temperature. The method used is descriptive research through experimental tests in the laboratory. Samples taken from the side of rice mills in the form of bran and then macerated with chloroform: methanol. After that tested the antioxidant activity of the compounds made by the method of DPPH with various concentration 10, 20, 30, 40 and 50 ppm. Furthermore, the endurance test of antioxidant compounds at various pH and temperature using the best concentration of antioxidant compounds. Based on the results, rice bran oil extract concentration of 50 ppm has antioxidant activity of 4.69%. Average yield the highest antioxidant activity shown in heating conditions with a temperature of 30oC for 30 minutes is equal to 32.25%. As well as the highest antioxidant activity was also shown at pH 5 in the amount of 25.1%. Keywords: DPPH, Oryzanol, Rice bran
Co-Authors AA Sudharmawan, AA Abdul Hakim Abdul Wafi Ach. Nashichuddin Ahmad, Ananda Rizkia Azizah Akyunul Jannah Almay Abidzar Elpasha Ami Fini Faqiha Amrulloh, Muhammad Firman Anik Listiyana Arrijal, Imam Malikul Hadi Artabah Begum Fauziyah Begum Fauziyah Briliana, Malich Septi Diajeng Burhan Ma'arif Burhan Ma'arif Burhan Ma'arif Burhan Ma'arif Burhan Ma’arif Chamlah Ayatillah Daffa Dhiya Ulhaq Denis Dewi Annisa, Dewi Diana Candra Dewi Fahrul Rizki Faisal Akhmal Muslikh Fina Luthfiana Fitria Rahma Fauzia Fitrotun Nasikhatul Maslakhah Fransiska Rosari Dewi Fuadi, Muhammad Nauval Nadhirul Hening Laswati Putra Indradewa, Rhian Janaloka, Nandana Adyuta Karawid, Galih Elsy M. Yogi Riyantama Isjoni Ma'arif , Burhan Ma'arif, Burhan Ma'arif, Burhan Mangestuti Agil Meilina Ratna Dianti Muhammad Afif Muhammad Amiruddin Muti'ah, Roihatul Mutiah, Roihatul Nafisa, Belia Bima Ni Nyoman Sri Budayanti Novia Maulina Nurani, Prasasti Swara Nurwijayanti Pradita Fiqlyanur Isna Primadana Qonita, Kesimira Rani Azzahara Risma Aprinda Roihatul Mutiah Roihatul Mutiah Roihatul Mutiah Roihatul Mutiah Roihatul Mutiah Roihatul Mutiah Sholekhah, Syafirda Arma'atu Suryanto Suryanto Tanaya Jati Dharma Dewi Ulfah, Jauza Wirda Anggraini Wirda Anggraini Yen Yen Ari Indrawijaya