Volume-3 ~ Issue-1

Abstract: A new flavonol glycoside was isolated from the flowers of Moringa pterygosperma (Moringeaeae). It has been isolated from the ethyl acetate extract of ethanolic extract of the flowers of plant. The structure of this compound was determined as Rhamnetin 3-0- (2'' galloyl) – 𝛽-D-galacto pyranosyl 4`– 𝛽-D- xyloside on the basis of UV, IR, 1HNMR, C13-NMR and mass spectral data.
Keywords :Flavonol glycoside, Moringa pterygosperma, Moringaecae, rhamnetin, ethanolic extract.

[1] R.N. Chopara, I.C. Chopara, K.L. Hande and L.D. Kapur, Indigenris drugs of India W.N. Dhar & Sons : Calcutta, 98,499, 1958.
[2] H. Itokawo, F. Hiranarayan and A. Mitta, Indinesian Medicinal Plants 58-62 (1990).
[3] A. Rao Ivan, Medicinal Plant of the World, New Jersey, 238 (1999)
[4] K.T. Mahmood, T. Mugal and I.U Haq, J. Pharm. Sci & Res. vol.2 (11), 775-781, (2010).
[5] P. Napolean, J.Anitha and R.R. Emilin, Current Biotica, 3 (1) : 33-37 (2009).
[6] B.N., Dhawan, M.P. Dubey, N. Mehrotra, and J.S. Tonden, Indian J. Exp. Biol, 594-604 (1980).
[7] S. Faizi, B.S. Siddaqui, R. Saleem, K. Aftab, F. Shaheen, A.H. Gilani, Planta Medica 64: 225-228 (1998).
[8] S.K. Pal, P.K. Mukherjee and B.P. Saha, Phytother Res. 9 (6), 463-465(1995).
[9] A.P. Guevara, C. Vargas, H. Sakurai, Y. Fujiwara, K. Hashimoto, T. Mauka, Mutation Res, 440 (2). 181-188 (1999).
[10] P. Siddhuraju and K. Becker, J. Agric. Food. Chem. 51 (8), 2144-2155 (2003).

Abstract: A new zeolite catalyst acylation of alcohols and phenols is developed. It is highly efficient method and the Na-Y zeolite is a reusable catalyst, hence it provides and green route in synthetic organic chemistry.
Keywords : Na-Y zeolite, Green route, acylation

[[1] Schelhaas, M.; Waldmann, H. Angew. Chem. Int. Ed. Engl. 1996,35,2056
[2] Sen, S. E.; Smith S. M.; Sullivan, K.A.; Tetrahydron 1999,55,12567
[3] Sayari, A. Chem. Mater. 1996,8,1840
[4] Kumar, P.; Dinesh, C.U.; Reddy, R. S.; Pande, B. Synthesis 1993,1069
[5] Kloetstra, K. R.; Van Bekkum, H. J. Chem. Res. Synop. 1995,26
[6] Ferino, I; Monaci, R.; Rombi, E.; Solinas, V.; Mangnoux, P.; Guisnet, M. J. Appl. Catal. A. 1999,183,303
[7] This catalyst is reported to have Bronsted acid sites in the micropors and on the external surface, and Lewis acid sites at the internal
surface due to local defects.

Abstract: voltammetric to prepare Fe (1-5)-Co-Ni/s electrocatalyst electrodes with stainless steel as working electrode, Ag/AgCl as a reference electrode and platinum as an auxiliary electrode. The integer number (1 to 5) after the Fe metal shown the percentage of Fe content (wt.%) on the Fe1-5-Co-Ni/s electrodes 57.09, 61.96, 68.07, 71.81 and 74.71 wt.%. The composition of stainless steel substrat before coating is determined by SEMEDAX. The Characters of Fe1-5-Co-Ni/s as electrocatalyst electrodes were determined by linear and cyclic voltammetric methods and SEM-EDAX method. The voltammetric methods studied electrochemical behavior, and SEM-EDAX method studied electrode surface morfology and determine semiquantitative elemental composition. The Fe1-5-Co-Ni/s electrodes had been applied for water electrolysis in base solution by adding 1 - 5 gram of NaHCO3 in one liter water.
Keywords :stainless steel, coating, Fe1-5-Co-Ni/s electrocatalyst electrodes

[1] I.A. Raj, K.I. Vasu, J. Appl. Electrochem., 20, 1990, 32-38
[2] E. Endoh, H. Otouma, T. Morimoto, Y. Oda, Int. J. Hydrogen Energy, 12, 1987, 473
[3] Y. Choquette, H. Menard, L. Brossard, Int. J. Hydrogen Energy, 14, 1989, 637
[4] I.A. Raj, J. Appl. Electrochem., 22, 1992, 471-477
[5] Q. Han, K. Liu, J. Chen, X. Wei, Int. J. Hydrogen Energy, 28, 2004, 1207-1212.
[6] H. He, H. Liu, F. Liu, K. Zhou, Mater. Lett., 59, 2005, 3968-3972
[7] L.S. Sanches, S.H. Domingues, C.E.B. L.H. Marino, Mascaro, Electrochem. Commun. 6, 2004, 543-548
[8] J. Panek, A. Serek, A. Budniok, E. R_winski, E. Lagiewka, Int. J. Hydrogen Energy, 28 ,2003, 169
[9] J. Kubisztal, A. Budniok, Appl. Surface Sci. 252 ,2006, 8605-8610
[10] J. Kubisztal, A. Budniok, A. Lasia, Int. J. Hydrogen Energy, 32, 2007, 1211-1218