Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Helmuth G.L. Siebald"'
Autor:
Marcio Luiz Marques D'Assumpção, Fabiana de Moura, Helmuth G.L. Siebald, Eduardo Mazoni Andrade Marçal Mendes
Publikováno v:
Revista Principia, Vol 1, Iss 39, Pp 101-112 (2018)
The work presents a control and supervision system especially designed for a pilot plant of the traditional cachaça production. This plant is designed to develop multidisciplinary research aimed at improving the distillate beverage in copper still b
Autor:
Raquel Mendonça Alvarenga, Andrea Carrara Geöcze, Katalin Carrara Geöcze, Helmuth G.L. Siebald, Marcus H. Canuto, Evelyn de Souza Oliveira
Publikováno v:
European Food Research and Technology. 235:853-859
Brazilian cachaca can be produced in two different ways: distilled in stainless steel column or in copper alembic stills. We evaluated 36 samples of commercial non-aged cachacas: 18 samples of sweetened cachacas distilled in stainless steel column, a
Publikováno v:
Journal of Mass Spectrometry. 47:901-904
Direct infusion electrospray ionization mass spectrometry in the negative ion mode (ESI(−)-MS) was employed to discriminate among fractions arising from the distillation of fermented sugarcane juice during the production of cachaca, a typical Brazi
Autor:
José D. Ardisson, Javier Ellena, Lilian A. Paim, Helmuth G.L. Siebald, Fabrícia M. Dias, Monize M. da Silva, Alzir A. Batista
Publikováno v:
Polyhedron. 42:110-117
The arene–ruthenium complex [Ru(η6-C10H14)(dppf)Cl]PF6 (1) was used as a precursor for the syntheses of the [Ru(η6-C10H14)(dppf)Br]PF6 (2), [Ru(η6-C10H14)(dppf)I]PF6 (3), [Ru(η6-C10H14)(dppf)SnF3]PF6 (4) and [Ru(η6-C10H14)(dppf)Cl][SnCl3]·0.4
Autor:
Camilla C. Golfeto, Javier Ellena, Fabrícia M. Dias, Alzir A. Batista, José D. Ardisson, Helmuth G.L. Siebald, Lilian A. Paim
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A series of new ruthenium-iron based derivatives [Ru(η5-Cp)(dppf)Cl] (1), [Ru(η5-Cp)(dppf)Br] (2), [Ru(η5-Cp)(dppf)I] (3) and [Ru(η5-Cp)(dppf)N3] (4) were obtained by reactions of [Ru(η5-Cp)(PPh3)2Cl] with 1,1′-bis(diphenylphosphino) ferrocene
Autor:
Luiz C.A. Oliveira, Rodinei Augusti, Helmuth G.L. Siebald, Daniella Vasconcellos Augusti, Patterson P. de Souza, Rodrigo Ramos Catharino, Marcos N. Eberlin
Publikováno v:
Food Chemistry. 115:1064-1068
Copper pot stills (alembics) and industrial stainless steel columns are the most common distillation devices used in Brazil to produce sugarcane spirit (cachaca). The use of both apparatus originates two distinctive products, the so-called (a) alembi
Autor:
Daniella V. Augusti, Vanessa M. Amorim, Marcos N. Eberlin, Helmuth G.L. Siebald, Rodrigo Ramos Catharino, Rodinei Augusti, Patterson P. de Souza, Waldomiro Borges Neto
Publikováno v:
Journal of Agricultural and Food Chemistry. 55:2094-2102
We have investigated the capability of direct infusion electrospray ionization mass spectrometry in the negative ion mode, ESI(-)-MS, to differentiate representative samples of artisan cachaça, a Brazilian sugar cane distillate of large production,
Autor:
Daniella Vasconcellos Augusti, Rodrigo Ramos Catharino, Marcos N. Eberlin, Patterson P. de Souza, Rodinei Augusti, Helmuth G.L. Siebald
Publikováno v:
Journal of Mass Spectrometry. 42:1294-1299
Rum and cachaça are sugarcane distillates produced on large scales and of similar composition, and their differentiation is currently a subject of commercial dispute and a challenging analytical task. We have investigated the ability of direct-infus
Autor:
Tânia M. A. Alves, Lilian A. Paim, Ilza Dalmázio, Daniella V. Augusti, Helmuth G.L. Siebald, Rodinei Augusti
Publikováno v:
Polyhedron. 24:1153-1159
Electrospray ionization and tandem mass spectrometry were used to characterize some novel heterotrimetallic complexes Ru(η5-C5H5)(dppf)SnX3 (1) (dppf = diphenylphosphine ferrocene; X = Cl, Br) and their heterobimetallic precursors Ru(η5-C5H5)(dppf)
Autor:
Geraldo M. de Lima, José Dias de Souza Filho, V. D. de Castro, Helmuth G.L. Siebald, José D. Ayala, J.D. Ardisson, Gabriella Bombieri, A.O. Porto
Publikováno v:
Polyhedron. 23:63-69
The reaction of 2-PySK with [Pt(dppf)Cl 2 ] [dppf=1,1 ′ -bis(diphenylphosfinoferrocene and 2-PyS=2-mercaptopyridine] produced Pt(dppf)(2-SPy) 2 ( 1 ) and its subsequent reaction with SnBu 2 (BF 4 ) 2 or SnBu 3 (BF 4 ) yielded [{Pt(dppf)(2-SPy)}{BF