Browsing P - Mathematics and Natural Sciences by Author "Ahmad, Ahyar"
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The Potential of Secondary Metabolites Compounds of Methanol Extract Stem Bark Melochia Umbellate as Anti-Bacterial
Usman; Hariani, Nunuk; Usman, Hanapi; Ahmad, Ahyar (International Seminar Chemistry Education Faculty of Teacher Training and Education Mulawarman University, 2015-04)A Study 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. umbellate (Houtt) ... -
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 ...