Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Maria da Graça Nascimento"'
Publikováno v:
Química Nova, Vol 37, Iss 6, Pp 1022-1027 (2014)
The immobilization of enzymes and microorganisms on solid supports has been developed in recent years. These biocatalysts may be used in organic media allowing their storage and reuse, thus reducing costs of the process. Herein, lipases from various
Externí odkaz:
https://doaj.org/article/2112b3160d5548908288f97dc48cada2
Autor:
Hélia Harumi Sato, Maria da Graça Nascimento, Pedro Carlos de Barros Fernandes, Patrícia de Oliveira Carvalho, Haroldo Yukio Kawaguti, Joelise de Alencar Figueira, Fabiano Jares Contesini
Publikováno v:
International Journal of Molecular Sciences, Vol 14, Iss 1, Pp 1335-1369 (2013)
Carbohydrases find a wide application in industrial processes and products, mainly in the food industry. With these enzymes, it is possible to obtain different types of sugar syrups (viz. glucose, fructose and inverted sugar syrups), prebiotics (viz.
Externí odkaz:
https://doaj.org/article/efafa7d81b334dd88fad08fb7c83ab5e
Autor:
Tula Beck Bisol, Marcelo Volpatto Marques, Thaís Andreia Rossa, Maria da Graça Nascimento, Marcus Mandolesi Sá
Publikováno v:
Química Nova, Vol 35, Iss 6, Pp 1260-1263 (2012)
In recent years, the introduction of the Green Chemistry concepts in undergraduate chemistry classes has been intensively pursued. In this regard, the two-step preparation of Epoxone (an organocatalyst developed by Shi & col.) from commercial D-fruct
Externí odkaz:
https://doaj.org/article/0c7533c901b14379978bf9eec9b7e9aa
Publikováno v:
Química Nova, Vol 30, Iss 5, Pp 1182-1187 (2007)
Lipases from different sources were immobilized in sodium caseinate/glycerol film and used in the esterification reactions of aliphatic acids with alcohols in the presence of organic solvents. Lipases from Pseudomonas sp and Rhizopus oryzae were sele
Externí odkaz:
https://doaj.org/article/7e1e61fb129f4e02b2616194675872a5
Publikováno v:
Química Nova, Vol 27, Iss 4, Pp 623-630 (2004)
Externí odkaz:
https://doaj.org/article/74bc18f2f14a4d5f9cca68b09414b804
Autor:
Paulo Cesar de Jesus, Jair Juarez João, Pedro Luiz Ferreira da Silva, Giovani Burlin, Maria da Graça Nascimento
Publikováno v:
Química Nova, Vol 20, Iss 6, Pp 664-672 (1997)
Lipases have been immobilized in microemulsion-based organogels (MBG's) and successfully utilized for the enantioselective esterification, diesterification and transesterification reactions, in organic solvents at 25ºC. This methodology is described
Externí odkaz:
https://doaj.org/article/9bbbd81fec224b9abf45d4a1afcd416b
Autor:
Rhaisa Thairine Betim, Lilian Fernanda Martins Do Amaral, Maria da Graça Nascimento, Cristiane Pilissão, Alysson de Pauloveloso, Michele do Rocio Gonçalves Dias
Publikováno v:
Journal of the Brazilian Chemical Society.
The immobilization of Burkholderia cepacia lipase (BCL) on pristine or functionalized multi-walled carbon nanotubes (MWCNTs) was studied in the resolution of (RS)-1-phenylethanol. For the functionalization, three treatments were used, these being in
Autor:
Thiago Bergler Bitencourt, Maria da Graça Nascimento, Cláudio E. Rodrigues-Santos, Carlos Mauricio R. Sant'Anna, Aurea Echevarria, Glauco F. Bauerfeldt
Publikováno v:
Molecules, Vol 20, Iss 9, Pp 17493-17510 (2015)
Molecules
Volume 20
Issue 9
Pages 17493-17510
Molecules
Volume 20
Issue 9
Pages 17493-17510
In this work, the theoretical description of the 4- and 3-substituted-cinnamic acid esterification with different electron donating and electron withdrawing groups was performed at the B3LYP and M06-2X levels, as a two-step process: the O-protonation
Autor:
Jaqueline Maria Ramos da Silva, Manuella Miranda Alves, Julyetty Crystyne da Silva, Maria da Graça Nascimento
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 112:1-8
In this study, lipase originating from Burkholderia cepacia (BCL) was immobilized in three different supports, starch film (SF), agar gel (AG) and loofa sponge (LS), and used to obtain two aroma esters (1-octyl acetate and 1-pentyl octanoate) and a m
Publikováno v:
Biocatalysis and Agricultural Biotechnology. 19:101133
In this study, glutaraldehyde-crosslinked chitosan beads were prepared and characterized for the immobilization of Burkholderia cepacia lipase (BCL, 23,000 U/g). The crosslinking time and the concentration of glutaraldehyde were evaluated. The morpho