Browsing A - Mathematics and Natural Sciences by Author "Erwin, Erwin"
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Esterification of oil adsorbed on palm decanter cake into methyl ester using sulfonated rice husk ash as heterogeneous acid catalyst
Hindryawati, Noor; Erwin, Erwin; Maniam, Gaanty P. (AIP Publishing, 2017-02-15)Palm Decanter cake (PDC) which is categorized as the waste from palm oil mill has been found to contain residual crude palm oil. The oil adsorbed on the PDC (PDC-oil) can be extracted and potentially used as feedstock for ... -
GC-MS profiling and DPPH radical scavenging activity of the bark of Tampol (Baccaurea macrocarpa)
Erwin, Erwin; Pusparohmana, Widar Ristiyani; Sari, Indah Permata; Hairani, Rita; Usman (F1000 Research, 2019-12-12)Background : Tampoi ( Baccaurea macrocarpa) is a tropical rainforest plant that produces edible fruit and is native to Southeast Asia, especially East Kalimantan, Indonesia. Previous research showed that Tampoi potentially ... -
ISOLATION AND CHARACTERIZATION OF STIGMASTEROL AND BETA-SITOSTEROL FROM WOOD BARK EXTRACT OF Baccaurea macrocarpa Miq. Mull. Arg
Erwin, Erwin; Pusparohmana, Widar R.; Safitry, Rizka D.; Marliana, Eva; Usman, Usman; Kusuma, Irawan W. (Rasayan Journal, 2020-12-01)Baccaurea macrocarpa Miq. Mull. Arg. (known locally as Tampoi) is one of edible fruit plants found in the forests of Borneo. The crude extract of wood bark of Tampoi was partitioned with n-hexane and ethyl acetate successively ... -
Isolation And MS Study Of Friedelinol From The Leaves Of Terap (Artocarpus odoratissimus BLANCO)
Erwin, Erwin (International Journal of Pharma and Bio Sciences, 2015-01-01)Artocarpus odoratissimus Blanco (local name: Terap) is one of the Artocarpus species was taken from the tropical forests of East Kalimantan. A friedelinol (triterpene) was isolated from the leaf extracts of the plant and ... -
Isolation And MS Study Of Friedelinol From The Leaves Of Terap (Artocarpus odoratissimus BLANCO)
Erwin, Erwin; Sulistyaningsih, Sri; Kusuma, Irawan W. (International Journal of Pharma and Bio Sciences, 2015-01-01)Artocarpus odoratissimus Blanco (local name: Terap) is one of the Artocarpus species was taken from the tropical forests of East Kalimantan. A friedelinol (triterpene) was isolated from the leaf extracts of the plant and ... -
Isolation And MS Study Of Friedelinol From The Leaves Of Terap (Artocarpus Odoratissimue Blanco)
Erwin, Erwin; Sulistyaningsih, Sri; Kusuma, Irawan W. (International Journal of Pharma and Bio Sciences, 2015-01-01)Artocarpus odoratissimus Blanco (local name: Terap) is one of the Artocarpus species was taken from the tropical forests of East Kalimantan. A friedelinol (triterpene) was isolated from the leaf extracts of the plant 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 ... -
Toxicity Assay of Baccaurea motleyana Mull. Arg. Wood Extracts (Rambai) and Chemical Compounds Evaluation for the Most Active Fraction
Erwin, Erwin; Tonapa, Zenthise G.; Alimuddin, Alimuddin (A and V Publication, 2020-11)Baccaurea motleyana Müll. Arg. (known locally as Rambai), as an edible fruit plant, is one of the plants native to tropical rain forest of East Kalimantan. This plant is spread in several Asian regions such as Malaysia, ...