Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Emma J. Pongoh"'
Publikováno v:
Jambura Journal of Chemistry. 3:99-104
The leaves and fruits of Indonesian Syzygium spp such as white pakoba, red pakoba and bombongan have been extracted by ethanol. The ethanolic extract was partitioned with polar solvent gradient using n-hexane, ethyl acetate and n-butanol repeatedly.
Publikováno v:
Indonesian Journal of Chemistry, Vol 3, Iss 3, Pp 149-155 (2010)
A triterpene ester saponin has been isolated from the seed of Barringtonia asiatica and its structure has been established by extensive application of high-resolution FABMS and two dimensional NMR techniques to be 3-O-{[β-D-galactopyranosyl(1→3)-
Externí odkaz:
https://doaj.org/article/abe57563b437413db7efad95b6fd03c7
Publikováno v:
Indonesian Journal of Chemistry, Vol 4, Iss 1, Pp 49-57 (2010)
An antifeedant triterpenoid saponin has been isolated from the seed of Barringtonia asiatica and its structure elucidated mainly by two dimensional NMR spectroscopy is identified as 3-O-{[β-D-galactopyranosyl(1→3)-β-D-glucopyranosyl (1→2)]-β-D
Externí odkaz:
https://doaj.org/article/72c2eeee4ba04672a22603b5670f6f4d
Autor:
Syafaruddin, Emma J. Pongoh, Robinson Pianaung, Deitje Sofie Pongoh, Tony Kurtis Timpua, Jasman
Publikováno v:
MATTER: International Journal of Science and Technology. 3:546-559
Demand of clean and healthy water services in the community requires innovation of appropriate technology, for instance through the development of filtering to groundwater systems or to water wells with high turbidity levels in order to meet the wate
Publikováno v:
Oxygenius Journal Of Chemistry Education. 2:34
This study aims to determine the effect of the use of Problem Based Learning towards reducing students' misconceptions on acid-base material. The learning model used in this study is the Problem Based Learning (PBL) learning model. The population in
Publikováno v:
Fullerene Journal of Chemistry. 5:53
The red pakoba (Syzygium sp.) is a plant originating from north sulawesi that is often used by local people as a basic ingridient of medicine. This research was conducted to isolate and identify glycoside compounds contained in the n-butanol fraction
Publikováno v:
Fullerene Journal of Chemistry. 4:76
The phytochemical screening and antilitiasis assay have been done on the ethanolic extract of nusa indah putih leaf (Mussaenda pubescens). The screening phyticemical results showed that the leaves of nusa indah putih (M. pubescens) positively contain
Publikováno v:
Oxygenius Journal Of Chemistry Education. 1:10
The application of practicum methods efficiently is able to help educators to achieve success in the chemistry learning process. This study aims to determine student learning outcomes in corrosion material through the learning process by applying the
Publikováno v:
The Open Natural Products Journal. 5:7-12
The 1 H and 13 C NMR spectra of camelliagenin A and A1-barrigenol from the seeds of Barringtonia asiatica were completely assigned for the first time by one- and two-dimensional homo- and heteronuclear studies ( 1 H, 13 C, DQCOSY, TOCSY, HMQC, HMBC)
Publikováno v:
Indonesian Journal of Chemistry. 3:149-155
A triterpene ester saponin has been isolated from the seed of Barringtonia asiatica and its structure has been established by extensive application of high-resolution FABMS and two dimensional NMR techniques to be 3-O-{[β-D-galactopyranosyl(1→3)-