Browsing A - Mathematics and Natural Sciences by Author "Usman"
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ANALISIS KANDUNGAN LOGAM BERAT Pb DAN Cd DI MUARA SUNGAI MANGGAR BALIKPAPAN
Dewi, Godfrida Any Yusriana; Samson, S. A.; Usman (ECOTROPHIC, 2018)Human activities around the estuary of the Manggar river in Balikpapan produce waste disposal and cause heavy metal contamination such as lead (Pb) and cadmium (Cd) in water bodies.The contaminant can endanger the life of ... -
Antidiabetic Activity of leaf extract from three types of Mangrove Originating from Sambera Coastal Region Indonesia
Usman; Amir, Muh.; Erika, Farah; Nurdin, M.; Kuncoro, Hadi (Research Journal of Pharmacy and Technology, 2019-04)This study designed to determine the antidiabetic profile ethanol extracts of leaf extract from three types of mangroves; Avicennia sp., Rhizopora sp, and Sonneratia sp. Extraction process used maceration with ethanol ... -
Antidiabetic Activity of leaf extract from three types of Mangrove Originating from Sambera Coastal Region Indonesia
Usman; Amir, Muh.; Erika, Farah; Nurdin, M.; Kuncoro, Hadi (Research Journal of Pharmacy and tehnology, 2019-05)This study designed to determine the antidiabetic profile ethanol extracts of leaf extract from three types of mangroves; Avicennia sp., Rhizopora sp, and Sonneratia sp. Extraction process used maceration with ethanol ... -
BIOACTIVITY TEST OF COMPOUND (Hexa-Tetra Contana) FROM SPONGE (Callyspongia pseudoreticulata) AS ANTIBACTERIAL OF WITHERED DISEASE ON POTATO PLANT (Ralstonia solanacearum)
Nurdin, M.; Usman (International Journal of Pharma and Bio Sciences, 2017-10)Sponge is one of the marine organisms of coral reefs that is able to produce secondary metabolite compounds with varieties of bioactivity and structural variations; one of its biological activities is as an antimicrobial. ... -
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 ... -
INDIKATOR ASAM BASA DARI EKSTRAK ETANOL PUCUK DAUN PUCUK MERAH (Syzygium oleana)
Sukemi; Usman; Putra, Boyfanie Ivan; Purwati, Widya; Rahmawati, Nindy Nur; Pradani, Sela Devi Alib (JKPK (JURNAL KIMIA DAN PENDIDIKAN KIMIA), 2017-12)Praktikum indikator asam basa alami biasanya dilakukan dengan mengekstrak bahan alam dengan pelarut tertentu, menguji ekstrak dengan berbagai macam larutan asam, basa dan netral, mencatat perubahan warnanya, menyimpulkan ... -
ISOLATION AND CHARACTERIZATION OF STIGMASTEROL AND -SITOSTEROL FROM WOOD BARK EXTRACT OF Baccaurea macrocarpa Miq. Mull. Arg
Erwin; Pusparohmana, W.R; Safitry, R.D.; Marliana, E.; Usman; Kusuma, I.W (RASAYAN J. Chem, 2020-10)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 of Natural Derivated Steroidal from Bark Stem of Melochia umbellata (Houtt) Stapf var. degrabrata K
Usman; Soekamto, Nunuk Hariani; Natsir, Muhammad; Maulidiyah (Asian Journal of Chemistry, 2020-02-25)Exploration of the natural product as pharmaceutical drug widely discover continuously for human life. The unique chemical compounds have been explored from bark stem of Melochia Umbellata (Houtt) Stapf var. degrabrata K. ... -
ISOLATION OF SECONDARY METABOLITE COMPOUNDS AND ANTIBACTERIAL ACTIVITIES TESTS FROM HEXANE EXTRACT OF STEM BARK MELOCHIA UMBELLATA (HOUTT) STAPF VAR. DEGRABRATA K
Usman; Amir, Muh.; Soekamto, Nunuk Hariani; Ahmad, Ahyar; Maulidiyah (Asian J Pharm Clin Res, 2018-05-05)Objectives: This research aims to determine the content of secondary metabolite compounds and antibacterial activity of stem bark extract Melochia umbellata (Houtt) Stapf var. degrabrata. Methods: M. umbellata stem bark ... -
POTENSI ANTIJAMUR EKSTRAK METANOL DAUN MANGROVE RHIZOPORA MUCRONATA TERHADAP JAMUR CANDIDA ALBICANS DAN ASPERGILLUS NIGER
Usman; Adi, Vega Zulia Putri (Jurnal Kimia Mulawarman, 2017-11)andida Albicans and Aspergillus Niger are some of the infectious fungi. Empirically bark, flower, root and mangrove leaves Rhizophora mucronata can be a hepatitis drug. This study aims to determine the antifungal potential ... -
POTENSI DAUN MANGROVE (Rhizopora mucronata) SEBAGAI ANTIDIABETES
Usman; Sukma, Dinda Noor; Simatupang, Bena Septariama (JURNAL ILMIAH MANUNTUNG, 2020-06-25)Rhizopora mucronate is a typical mangrove plant that easly found on the coast of Muara Badak Beach, Kutai Kartanegara Regency, East Borneo, Indonesia. The purpose of this research is to know the activity of active ... -
Potensi Senyawa Metabolit Sekunder Dari Kulit Batang Melochia umbellata (Houtt) Stapf var. degrabrata paliasa) Sebagai Anti-Tuberkulosis
Usman (Jurnal Sains dan Kesehatan, 2015)Melochia umbellata (Houtt) Stapf var. Degrabrata merupakan jenis tumbuhan yang banyak ditemukan di hutan tropis Indonesia. Di daerah Sulawesi selatan tumbuhan ini dikenal dengan nama paliasa dan sejak lama digunakan ... -
Potensi Senyawa Metabolit Sekunder Dari Kulit Batang Melochia umbellata (Houtt) Stapf var. degrabrata paliasa) Sebagai Anti-Tuberkulosis
Usman (Jurnal Sains dan Kesehatan, 2015)Melochia umbellata (Houtt) Stapf var. Degrabrata merupakan jenis tumbuhan yang banyak ditemukan di hutan tropis Indonesia. Di daerah Sulawesi selatan tumbuhan ini dikenal dengan nama paliasa dan sejak lama digunakan oleh ... -
SENYAWA TURUNAN OLEANAN DARI KULIT BATANG Melochia umbellata (Houtt) Stapf var. DEGRABRATA K DAN BIOAKTIVITASNYA
Usman; Soekamto, Nunuk Hariani; Usman, Hanafi; Ahmad, Ahyar (Seminar Nasional Kimia dan Pendidikan Kimia UNS, 2015-04-18)Senyawa turunan oleanan 3-asetil-12-oleanen-28-oat diisolasi dari fraksi n-heksan kulit batang M. umbellata (Houtt) Stapf var. degrabrata K. Struktur molekul ditentukan melalui analisis data spektroskopi IR, NMR 1D dan NMR ... -
Skrining Fitokimia dan Bioaktivitas Tumbuhan Bakau Api-Api Putih (Avicennia alba Blume)
Erwin; Nuryadi, Dedi; Usman (Jurnal Sains dan Kesehatan, 2020-08-20)Penelitian tentang skrining fitokimia dan biokaktivitas ekstrak batang, kulit batang dan daun Bakau Api api putih telah dilakukan. Masing-masing 100 gram bagian tumbuhan diekstraksi dengan cara maserasi menggunakan metanol ... -
Toksisitas Ekstrak Etanol Mangrove Sonneratia alba terhadap Larva Nyamuk Aedes aegypt
Usman; Megawati; Malik, Munawwarah; Ekwanda, Refka Revina Melyata; Hariyant, Trini (Jurnal Sains dan Kesehatan, 2020-01)Mangrove Sonneratia alba adalah salah satu spesies mangrove yang dapat ditemukan di pantai Kalimantan Timur. Mangrove Sonneratia alba mengandung metabolit sekunder yang berpotensi sebagai antioksidan, antibakteri, dan ... -
Toksisitas Ekstrak Etanol Mangrove Sonneratia alba terhadap Larva Nyamuk Aedes aegypti
Usman; Megawati; Munawwarah, Malik; Refka, Revina M.E; Trini, Hariyanti (Jurnal Sains dan Kesehatan, 2020)Mangrove Sonneratia alba adalah salah satu spesies mangrove yang dapat ditemukan di pantai Kalimantan Timur. Mangrove Sonneratia alba mengandung metabolit sekunder yang berpotensi sebagai antioksidan, antibakteri, dan ... -
TOXICITY AND ANTIMICROBIAL ACTIVITY FROM EXTRACT AND OLEANAN DERIVATIVE COMPOUNDS OF THE BARK MELOCHIA UMBELLATE (HOUTT) STAPF VAR. DEGRABRATA
Usman; Soekamto, Nunuk Hariani; Usman, Hanafi; Ahmad, Ahyar (International Journal of Pharma and Bio Sciences, 2014-07)Oleanan derivative compound namely 3-acetyl-12-oleanen-28-oic acid, has been isolated from n-hexane fraction of the bark M. umbellate (Houtt) Stapf var. degrabrata The molecular structure was determined by IR spectroscopy, ... -
Uji Fitokimia dan Antibakteri dari Ekstrak Metanol Kulit Batang Melochia umbellata (Houtt) Stapf var Degrabrata (PALIASA) terhadap Bakteri Patogen
Usman; Soekamto, Nunuk Hariani; Usman, Hanafi; Ahmad, Ahyar (Jurnal Kimia Sains, 2011-09)A Study phytochemical and antibacterial essay of the methanol extracts of steam bark M.umbellate (Houtt) Stapf var. degrabrata (Paliasa). The results of this study showed that the methanol extract from the bark of M. ... -
UJI FITOKIMIA DAN UJI ANTIBAKTERI DARI AKAR MANGROVE Rhizopora apiculata TERHADAP BAKTERI Escherichia coli DAN Staphylococcus aureus
Usman (JKPK (JURNAL KIMIA DAN PENDIDIKAN KIMIA), 2017-12-31)Indonesia memiliki berbagai jenis mangrove namun pemanfaatan mangrove sebagai produk obat dan makanan kesehatan belum banyak dimanfaatkan karena masih terbatasnya informasi dan penelitian mengenai kandungan senyawa bioaktif ...