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Determination of the structural changes by FT-IR, Raman, and CP/MAS 13C NMR spectroscopy on retrograded starch of maize tortillas.
The nixtamalization, production and storage of tortillas in refrigeration cause several changes on the starch structure, resulting in an increased crystallinity and therefore a higher content of
HIV-1 inhibitory compounds from Calophyllum brasiliense leaves.
The hexane, acetone and methanol extracts of Calophyllum brasiliense leaves were fractionated following a three bioassay guide and led to the isolation of three anti HIV-1 dipyranocoumarins: calanolides A and B and soulattrolide.
HIV-1 inhibition by extracts of Clusiaceae species from Mexico.
The organic plant extracts of 21 species of Clusiaceae from Mexico were screened for anti HIV-1 reverse transcriptase activity and support the idea that plant extracts represent a valuable source of potential anti HIV compounds.
Comparative analysis of trehalose production by Debaryomyces hansenii and Saccharomyces cerevisiae under saline stress
The comparative analysis of growth, intracellular content of Na+ and K+, and the production of trehalose in the halophilic Debaryomyces hansenii and Saccharomyces cerevisiae were determined under saline stress found that D. hansenII showed a higher production of Trehalose, compared to S. cerevisae strains under similar conditions.
Trypanocidal constituents in plants 1. Evaluation of some Mexican plants for their trypanocidal activity and active constituents in Guaco, roots of Aristolochia taliscana.
Crude extracts of Mexican medicinal plants were screened for trypanocidal activity against Trypanosoma cruzi, which is the etiological agent for Chagas' disease, one of the most serious protozoan
Hypoglycemic effect of extracts and fractions from Psacalium decompositum in healthy and alloxan-diabetic mice.
The hypoglycemic effect of the hexane, methanol and water extracts obtained from roots of Psacalium decompositum (Asteraceae) was investigated in fasting healthy mice and the administration of this fraction to animals with severe diabetes did not cause any significant decrease in blood glucose levels.
Pentacyclic Triterpenes with Selective Bioactivity from Sebastiania adenophora Leaves, Euphorbiaceae
Six known pentacyclic triterpenes possessing oleanane, lupane, or taraxerane-type skeletons were isolated from the leaves of Sebastiania adenophora (Euphorbiaceae) and are reported for the first time
Production of Maltosylfructose (Erlose) with Levansucrase from Bacillus Subtilis
Levansucrase (E.C. from B. subtilis was used in a synthesis reaction for the production of maltosylfructose using maltose as acceptor and sucrose as the fructosyl donor. The effect of
Antifungal Xanthones from Calophyllum brasiliensis Heartwood
The above results suggest that C. brasiliensis xanthones actually play a defensive role against wood decay fungi.
In vitro antioxidant and antiproliferative activities of plants of the ethnopharmacopeia from northwest of Mexico
Of the extracts evaluated, that of Krameria erecta showed the greatest antioxidant and antiproliferative activities, a discovery that makes this species a promising candidate for future research.