Browsing by Author "Panggabean, Aman S."
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Influence of the addition and storage time of crude extract of tea leaves (camellia sinensis l.) toward value of free fatty acid in crude palm oil
Erwin, Erwin; Wahifiyah, Elita; Hairani, Rita; Panggabean, Aman S. (IOP Publising, 2018)The purpose of this study was to determine the effect of the crude extract of tea leaves (Camellia sinensis L.) and storage time on the content of free fatty acid in palm oil. The dried tea leaves were macerated and ... -
Influence of the addition and storage time of crude extract of tea leaves (camellia sinensis l.) toward value of free fatty acid in crude palm oil
Erwin, Erwin; Wahifiyah, Elita; Hairani, Rita; Panggabean, Aman S. (IOP Publishing Ltd., 2018)The purpose of this study was to determine the effect of the crude extract of tea leaves (Camellia sinensis L.) and storage time on the content of free fatty acid in palm oil.The dried tea leaves were macerated and ... -
Prakonsentrasi Ion Cd(II) dalam Sampel Pupuk Nitrogen, Fosfor dan Kalium (NPK) Menggunakan Alumina Teraktivasi sebagai Material Pengisi Kolom
Simanjuntak, Lossi H.; Erwin, Erwin; Panggabean, Aman S. (Universitas Sebelas Maret Surakarta Indonesia, 2020-09-01)Preconcentration of Cd(II) Ion in Nitrogen, Phosphor, and Kalium (NPK) Fertilizer Sample Using Activated Alumina as a Column Filler Material. The research about preconcentration of Cd(II) in NPK fertilizer using activated ... -
Synthesis silver nanoparticles using trisodium citrate and development in analysis method
Arif, Moh. Syaiful; Ulfyah, Rusda; Erwin, Erwin; Panggabean, Aman S. (American Institute of Physics, 2021)Synthesis of silver nanoparticles (AgNPs) and analytical development of silver nanoparticles has been done. AgNPs were making by chemical reduction method using trisodium citrate as a reducing agent. AgNPS was Prepared ...