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| Barata-Soares,Anderson D.; Gomez,Maria Luiza P. A.; Mesquita,Carlos Henrique de; Lajolo,Franco M.. |
| Since the first isolation of ascorbic acid (AsA) in 1928, few papers have been published regarding the biosynthesis of AsA in plants, especially in fruits. It took as long as 1998, before Wheeler, Jones and Smirnoff, based on a study with Arabidopsis leaves, proposed what can be considered the main pathway of biosynthesis of AsA, in which L-galactose (L-GAL) is a key precursor. This paper reports the effectiveness of some precursors (cold or radiolabeled) in the biosynthesis of AsA in different plants: green sweet pepper, white-pulp guava, red-pulp guava, papaya and strawberry at two ripening stages (mature green and ripe for papaya and mature green and half red for strawberry) and broccoli. The 'Smirnoff-Wheeler' pathway was functioning and active in all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ascorbate; Ascorbate biosynthesis pathway; Antioxidant; Precursor infiltration. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000300004 |
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| Godoy,Adriana de; Morita,Rodrigo J.; Cordenunsi,Beatriz R.; Lajolo,Franco M.; Nascimento,João Roberto O. do. |
| During ripening many important physic-chemical changes contribute to fruit quality, and they are precisely determined by gene expression. Specific genes are essential to normal ripening; however, information on gene expression about the majority of tropical fruit, such as bananas and mangoes is limited. In this way, the present study was undertaken with the objective to provide preliminary access to the changes in expression of some genes potentially relevant to banana and mango ripening. To simultaneously evaluate the changes in gene expression, a small collection of genes related to ethylene biosynthesis, starch mobilization, cell wall disassembly, pigment synthesis and ascorbate metabolism was assembled in nylon membranes and probed with cDNA from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fruit ripening; Reverse northern blotting. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000400001 |
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| Genovese,Maria Inés; Davila,Jorge; Lajolo,Franco M.. |
| Soy products produced in Ecuador, with a local developed and cultivated soybean variety (INIAP 306), were analysed for isoflavone content and profile. The products presented high total isoflavone contents, varying from 53 to 106 mg/100 g (wet basis, expressed as aglycones), the lowest content being for okara and the highest for the low fat soybean flour obtained by extrusion cooking of the seeds at the field moisture. Soy nuts showed the same content of isoflavones than the seeds, but with lower amounts of malonylglycosides and higher of the deesterified beta-glycosides. The malonylglycosides were the predominant form of the isoflavones in the flours, and the beta-glycosides in soymilk and textured soy protein. Genistein derivatives were the compounds... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecuadorian soybean products; Isoflavone content; Isoflavone profile. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000600020 |
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