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All Journal HAYATI Journal of Biosciences Jurnal Ilmiah Farmasi Media Eksakta Jurnal Farmasi Sains dan Terapan (Journal of Pharmacy Science and Practice) Biocelebes KOVALEN: Jurnal Riset Kimia Journal of Islamic Pharmacy Jurnal Farmasi Galenika (Galenika Journal of Pharmacy) Indonesian Journal of Chemistry GHIDZA: Jurnal Gizi dan Kesehatan Jurnal Ilmu Kefarmasian Indonesia Jurnal Mandala Pengabdian Masyarakat Jurnal DiMas (Jurnal Pengabdian Kepada Masyarakat) Pharmaceutical Reports Jurnal Pengabdian Farmasi dan Sains Jurnal Dedikatif Kesehatan Masyarakat Jurnal Farmasi Sains dan Terapan (Journal of Pharmacy Science and Practice) Poltekita: Jurnal Pengabdian Masyarakat
Agustinus Widodo
Jurusan Farmasi, Fakultas MIPA, Universitas Tadulako, Palu, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry Earth & Planetary Sciences Education Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Journal : KOVALEN: Jurnal Riset Kimia

 1 
PENGARUH PENAMBAHAN AKTIVATOR DALAM PEMBUATAN KARBON AKTIF AMPAS TAHU SEBAGAI ADSORBEN MINYAK JELANTAH Ma'rifah Ma'rifah; Jamaluddin Jamaluddin; Yonelian Yuyun; Agustinus Widodo
KOVALEN: Jurnal Riset Kimia Vol. 4 No. 1 (2018): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (612.489 KB) | DOI: 10.22487/kovalen.2018.v4.i1.9363

Abstract

Minyak goreng yang telah digunakan berulang kali akan mengalami kerusakan seperti peningkatan bilangan peroksida dan asam lemak bebas yang dapat menimbulkan bahaya bagi kesehatan. Penelitian ini memvariasikan aktivator pada proses pembuatan karbon aktif ampas tahu yaitu NaCl 10%, Na2CO3 5% dan H3PO4 1M untuk mengetahui pengaruhnya terhadap kadar asam lemak bebas dan bilangan peroksida dalam minyak jelantah. Minyak yang digunakan adalah minyak goreng kemasan yang digunakan untuk menggoreng ikan kering, ikan basah, tahu-tempe dan daging ayam. Tahapan pemurnian minyak yaitu proses despising, netralisasi dan bleaching. Pengujian mengacu pada SNI (Standar Nasional Indonesia) 7709:2012 sebagai syarat mutu minyak goreng. Hasil penelitian menunjukkan kadar asam lemak bebas tertinggi dan terendah yang diperoleh yaitu 0,1925% dan 0,1473%, sedangkan bilangan peroksida tertinggi dan terendah yaitu 9,3203 meq O2/kg dan 4,3526 meq O2/kg. Aktivator yang paling berpengaruh pada penurunan kadar asam lemak bebas dan bilangan peroksida adalah Na2CO3 dimana diperoleh kadar rata – rata asam lemak bebas 0,1473% dengan persentase penurunan sebesar 57,68% dan kadar  rata – rata penurunan bilangan peroksida yaitu 4,3526 meq O2/kg dengan persentase penurunan sebesar 59,04%. Jadi, aktivator Na2CO3 merupakan aktivator yang paling baik digunakan untuk aktivasi karbon ampas tahu sebagai adsorben minyak jelantah.Kata Kunci:    Aktivator, Karbon Aktif, Ampas Tahu, Adsorben, Minyak Jelantah. 
Analisis Kualitatif dan Kuantitatif Metabolit Sekunder Ekstrak Etanol Buah Okra (Abelmoschus esculentus L. Moench) dengan Metode Spektrofotometri UV-Vis: Qualitative and Quantitative Analysis of Secondary Metabolites in Ethanol Extract of Okra (Abelmoschus esculentus L. Moench) Fruit with UV-Vis Spectrophotometry Method Joni Tandi; Bella Melinda; Anita Purwantari; Agustinus Widodo
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 1 (2020): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i1.15044

Abstract

This study aims to determine the content of secondary metabolites and the levels of total secondary metabolites in ethanol extract of Okra (Abelmoschus esculentus L. Moench) fruit with UV-Vis Spectrophotometry method. Okra (Abelmoschus esculentus L. Moench) fruit extract was prepared by maceration method with 96% ethanol. The extract was concentrated using a rotary evaporator that followed by a qualitative test for alkaloids, flavonoids, saponins, and tannins using suitable reagents with the test parameters, while for the qualitative assay using a UV-Vis Spectrophotometry. Qualitative analysis of alkaloids using test parameters of total alkaloids equivalent to quinine, flavonoid using parameter of total flavonoids equivalent to quercetin, saponin using parameters of standard saponins total from the Quillaja Bark, and tannin using test parameters of total tannins equivalent to tannic acid. Qualitative test results indicated that the ethanol extract of Okra fruit tested positive for alkaloids content wich characterized by the orange deposition, flavonoids characterized by the formation of an orange-yellow color, a stable foam for saponins and tannins marked in black. The quantitative analysis resulted alkaloids of 2228.06 mg/gram, flavonoids of 2.79 mg/gram, saponins of 10.03 mg/gram, and tannins of 1973.27 mg/gram. Keywords: Okra fruit, secondary metabolites, UV- Vis spectrophotometry, qualitative, quantitative.
Analisis Metabolit Sekunder dan Aktivitas Ekstrak Etanol Kulit Buah Salak (Salacca zalacca (Gaertn.) Voss) Terhadap Kadar Glukosa dan Ureum Kreatinin Tikus Putih Jantan (Rattus norvegicus): Analysis of Secondary Metabolites and Activity of Ethanol Extract of Snake Fruit Peel (Salacca zalacca (Gaertn.) Voss) on Glucose and Ureum Creatinine Levels of Male White Rats (Rattus norvegicus) Tien Wahyu Handayani; Agustinus Widodo; Risna Yanti; Erdy Prasetyo; Zulfaidah; Joni Tandi
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 3 (2021): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i3.15567

Abstract

The snake fruit peel (Salacca zalacca (Gaertn.) Voss) traditionally has several health benefits, one of which is to treat diabetes mellitus. This study aimed to determine the content of secondary metabolites in the ethanolic extract of snake fruit peel and its activity on glucose and urea creatinine levels in male white rats (Rattus norvegicus). Phytochemical screening of extracts was carried out qualitatively and quantitatively using UV-Vis Spectrophotometry. This study is a laboratory experimental study using 30 test animals divided into 6 treatment groups (normal control, negative control, positive control, 70 mg/kg BW, 140 mg/kg BW, and 280 mg/kg BW). The results showed that the ethanol extract of the bark of the salak fruit contained 7.61 %w/w alkaloids, flavonoids 0.041% w/w, tannins 1.18% w/w, and saponins 2% w/w. Ethanol extract of salak fruit peel dose of 140 mg/kg BW affected decreasing blood glucose and urea creatinine levels. The skin of the salak fruit has the potential to be further investigated as an antidiabetic.
Co-Authors A. Lasongke, Putri Faradila Abd. Rahman Razak Ade Fazliana Mantika Adrianton Adrianton Akhmad Khumaidi Amelia, Putri Anita Purwantari Anita Tri Damayanti Anugraini, Annisa Putri Arisca, Windhy Nur Armini Syamsidi Asty Ivon Samaliwu Bella Melinda Djaleha, Helena Fransisca Dytha Okvhyanitha Ediati Sasmito Erdy Prasetyo Fenti Fenti Gugun Gunawan Iklima Indriani, Meri Feki Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jessica Jessica Joni Tandi Joni Tandi, Joni Khildah Khaerati Ma'rifah Ma'rifah Maskur, Risda Meita Meita Muhamad Rinaldhi Tandah Muhammad Sulaiman Zubair Musyahidah Musyahidah Nanang Fakhrudin, Nanang Natasha Setiawan Nur Pita Sari Nurlina Ibrahim Nurul Ambianti Nurul Mufliha Padhlun A Jerni Pitriani Purnamasari Zainal, Amalia Rasida Risna Yanti Ritha Pratiwi Satriani Siti Nurhafsah Syaputra, Gunawan Syariful Anam Syariful Anam Tien Wahyu Handayani Tunreng, Muh. Fadil Usman Wa Ode Sitti Musnina Wa Ode Sitti Musnina Yonelian Yuyun Yuliet Yuliet Yusriadi Yusriadi Zainal, Amalia Purnama Zubair, M. Sulaiman Zulfaidah