Browsing Reports by Author "Erwin, Erwin"
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Antioxidant Assay with Scavenging DPPH Radical of Artocarpus anisophyllus Miq Stem bark extracts and Chemical compositions and Toxicity Evaluation for the Most Active Fraction
Erwin, Erwin; Pratiwi, Djihan R.; Saputra, Iwan; Alimuddin, Alimuddin (A and V Publication, 2021-05-01)The purpose of this study was to determine the antioxidant activity of crude extract and their fractions, the content of secondary metabolite types of crude extract, and the chemical content and toxicity of the most active ... -
Biological activities and phytochemicals of Hyptis capitata grown in East Kalimantan, Indonesia
Kusuma, Irawan W.; Rahmini, Rahmini; Arung, Enos Tangke; Pramono, Arif Y.; Erwin, Erwin; Supomo, Supomo (Open Science Publishers LLP, 2020-03-26)Hyptis capitata is a plant in the family of Lamiaceae used to prevent wound infection and as an antidote for food poisoning by the Bentian people, a local tribe in East Kalimantan, Indonesia. Of the plants in the Lamiaceae ... -
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. (American Institute of Physics, 2017)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 Tampoi (Baccaurea macrocarpa)
Erwin, Erwin; Pusparohmana, Widar R.; Sari, Indah P.; Hairani, Rita; Usman, Usman (2019)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 ... -
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 ... -
ISOLATION AND CHARACTERIZATION OF STIGMASTEROL AND -SITOSTEROL FROM WOOD BARK EKSTRACT OF Baccaurea macrocarpa Miq. Mull. Arg.
Erwin, Erwin; W. R., Pusparohmana; R.D., Safitry; E. Marliana; Usman, Usman; I.W. Kusuma (Rasayan J. Chem, 2019-11)Baccaurea macrocarpa Miq. Mull. Arg. (known locally as Tampoi) is one of the 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 ... -
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 ... -
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, ... -
Toxicity test, antioxidant activity test and GC-MS profile of the active fraction of Coptosapelta tomentosa (Blume) root (Merung)
Bohari, Bohari; Dari, Anita K.; Pratiwi, Djihan R.; Erwin, Erwin; Rahmadi, Anton (Foundation for Enviromental Protection and Research, 2019-12)Merung (Coptosapelta tomentosa (Blume)) is one of the plants of the genus Coptosapelta, commonly found in the forests of orneo. People in Kalimantan, especially in East Kalimantan and South Kalimantan, use the extract ... -
Waltherione C and cleomiscosin from Melochia umbellata var. Degrabrata K. (Malvaceae), biosynthetic and chemotaxonomic significance
Erwin, Erwin; Noor, Alfian; Soekamto, Nunuk H.; Altena, Ian van; Syah, Yana M. (Elsevier Ltd., 2014-03-22)