M. Pineda

Publications81
h-index23
Citations6,205
Highly Influential Citations226
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Spectrophotometric quantitation of antioxidant capacity through the formation of a phosphomolybdenum complex: specific application to the determination of vitamin E.
TLDR
The phosphomolybdenum method is routinely applied in the laboratory to evaluate the total antioxidant capacity of plant extracts and to determine vitamin E in a variety of grains and seeds, including corn and soybean.
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Update on ureide degradation in legumes.
TLDR
A discussion of the potential roles for ureides and manganese in the feedback inhibition of N2-fixation under water limitation is presented and the existing data are examined in relation to potential changes in both aerial carbon and nitrogen supply under water deficit.
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Local inhibition of nitrogen fixation and nodule metabolism in drought-stressed soybean
TLDR
Proteomic analysis suggests that plant carbon metabolism, protein synthesis, amino acid metabolism, and cell growth are among the processes most altered in soybean nodules under drought stress.
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Molecular analysis of ureide accumulation under drought stress in Phaseolus vulgaris L.
TLDR
It is indicated that ureide accumulation in response to water deficit is independent from de novo synthesis of ureides in nodules, and therefore uncoupled from nitrogen fixation.
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Roselle (Hibiscus sabdariffa) seed oil is a rich source of gamma-tocopherol.
TLDR
The global characteristics of roselle seed oil suggest that it could have important industrial applications, adding to the traditional use of roselsle sepals in the elaboration of karkade tea.
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Roselle (Hibiscus sabdariffa) Seed Oil Is a Rich Source of γ-Tocopherol
: The antioxidant potential of roselle (Hibiscus sabdariffa L.) extracts was studied. Different plant organs, including seeds, stems, leaves, and sepals, were analyzed with respect to their…
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Ureide metabolism during seedling development in French bean (Phaseolus vulgaris).
TLDR
Changes in ureide content and in enzymatic activities involved in their metabolism were identified in the cotyledons and embryonic axes during germination and early seedling development in French bean.
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Allantoate amidinohydrolase (Allantoicase) from Chlamydomonas reinhardtii: its purification and catalytic and molecular characterization.
TLDR
The effect of group-specific reagents suggest that the amino acids histidine, tyrosine, and cysteine are essentials for the allantoicase activity with both substrates.
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Antioxidant capacity of extracts from wild and crop plants of the Mediterranean region.
TLDR
These Mediterranean plant species could be used as a very good source of both water-soluble and lipid- soluble antioxidants, particularly alpha-tocopherol, particularly Holm oak and olive tree leaves showed the highest yields.
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Urea is a product of ureidoglycolate degradation in chickpea. Purification and characterization of the ureidoglycolate urea-lyase.
TLDR
A ureidoglycolate-degrading activity was analyzed in different organs of chickpea, for the first time that such an activity is detected in plant tissues, and it is suggested that the enzyme is a metalloprotein.
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