Jatropha dioica Sessé (JD) is a plant from arid and semiarid zones of Mexico related to local therapeutic uses and possible use in food and agriculture as a control agent of pest organisms that helps to reduce impacts on the environment, human health and resistance by phytopathogens. In vitro bactericidal activity was evaluated with the well diffusion method in doses of 1000, 2500, 5000, 7500, 10,000 and 20,000 µg mL⁻¹, and fungistatic activity was evaluated with the agar dilution method (500, 1000, 1500, 2000 and 4000 µg mL⁻¹) in Pseudomonas syringae, Botrytis cinerea and Fusarium oxysporum using hydroalcoholic extracts of J. dioica root in a completely randomized design with five replications. Total phenol and flavonoid contents were recorded by the Folin–Ciocalteu and aluminum chloride methods. Ethanol and methanol extracts showed fungistatic activity on B. cinerea, inhibiting from 42.27 ± 1.09 to 46.68 ± 0.98 mg mL⁻¹, with an IC₅₀ of 5.04 mg mL⁻¹, with no differences by solvent type. In F. oxysporum, inhibition ranged from 14.77 ± 1.08 to 29.19 ± 0.89 mg mL⁻¹, and the methanol extract was more efficient, generating a stress response to the ethanol extract. The bactericidal activity on P. syringae recorded inhibition zones of 17.66 ± 0.33 and 16.66 ± 0.33 mg mL⁻¹, with ethanol being more efficient. The phenol content ranged from 8.92 ± 0.25 to 12.10 ± 0.34 mg EAG g⁻¹ and flavonoid content ranged from 20.49 ± 0.33 to 28.21 ± 0.73 mg QE g⁻¹ of sample dry weight. The results highlight the biological activity of J. dioica as an alternative to biopesticides that minimize agrochemical applications and generate pathogen resistance. These advances contribute to the revaluation and conservation of the species.

Due to their secondary metabolite content, plant extracts are an alternative method for controlling pathogenic organisms in agriculture and post-harvest operations. Botrytis cinerea and Pseudomonas syringae are among the causative agents of diseases and losses in agricultural production. The species Larrea tridentata is abundant in the arid and semi-arid zones of Mexico and has no defined use; however, it contains secondary metabolites with microbicidal potential that could aid in biological control and enhance its harvest status. Growth inhibition (halo) of B. cinerea and P. syringae was evaluated by applying alcoholic extract of L. tridentata leaves at doses of 50, 100, 250, 500, 750, 1000, and 2000 µg mL⁻¹ in vitro, using poisoned medium and potato dextrose agar for the fungus and the agar well method for the bacteria, in a completely randomized design with five replicates. The flavonoids quercetin, apigenin, narigenin, kaempferol, and galangin were identified as possible agents of microbicidal activity. The extract inhibited the growth of B. cinerea from 100 µg mL⁻¹ and completely inhibited it with 1000 and 2000 µg mL⁻¹. For P. syringae, inhibition was observed from 250 µg mL⁻¹, demonstrating that the higher the concentration, the greater the growth inhibitory effect. The secondary metabolite content of the L. tridentata extract is sufficient to have an impact on microorganisms with economic impact in agriculture.

Mexican yuca (Yucca decipiens Trel.) is native to the semi-desert region of north-central Mexico. Based on its medicinal uses, the flour produced from its leaves and stems was evaluated to determine new food uses. The flour was characterized based on granulometry, rheology, texture and functional properties, which were analyzed with the RStudio software. The results indicate that the Water Absorption Index (WAI) of yuca flour (0.11 mL g−¹) is similar to that of wheat flour (0.56 mL g−¹). However, the Fat Absorption Index (FAI) of yuca flour (0.40 mL g−¹) is significantly lower than that of Saltillo Pinto bean flour (1.55 mL g−¹). This suggests that yuca exhibits hydrophilic behavior comparable to that of wheat flour and requires less oil in potential formulations. The expansion capacity of yuca flour is similar to that of wheat flour, demonstrating a gluten-like behavior ideal for food applications that require this structural component. The flour also exhibited notable foaming properties, high stability and low fat content, highlighting its food potential. Fermentation matched the parameters of the Cereal & Grains Association’s physicochemical test methods 56–60; consequently, yuca flours are classified as the same as those produced from soft, weak wheat, supporting their use for fermentation processes. Internal friction values (0.85–0.92) suggest limited flow; however, its high density shows fine granulometry that facilitates the bagging, handling and storage of the flour, complying with the Mexican standards.

Jatropha dioica Sessé (JD) is a plant from arid and semiarid areas of Mexico, and has been linked to medicinal uses. Due to the current limitation of agrochemicals in agriculture and post-harvest due to environmental effects, health and resistance of phytopathogenic microorganisms, it is presumed that secondary metabolites of J. dioica can act as an alternative biological control. The bactericidal and fungistatic activity of hydroalcoholic extracts (ethanol and methanol) on Botrytis cinerea, Fusarium oxysporum and Pseudomonas syringae from J. dioica roots was evaluated in vitro, considering that the content of total phenols and flavonoids (Folin-Ciocalteu and aluminum chloride method) may have antimicrobial activity. The ethanolic and methanolic extracts have fungistatic biological activity on B. cinerea, with growth inhibition of 42.27 ±1.09 and 46.68 ±0.98% respectively and an IC50 of 5.04 mg mL^-1 without significant differences in the use of solvents. In F. oxysporum, inhibition of 14.77 ±1.08 and 29.19 ±0.89% was obtained, where the methanolic extract was more efficient generating a stress response to the ethanolic extract. Regarding the bactericidal activity in P. syringae, the inhibition halo was 17.66 ±0.33 and 16.66 ±0.33 mm, showing slight difference when using ethanol. The phenolic content obtained was 8.92 ±0.25 and 12.10 ±0.34 mg EAG g^-1 and flavonoids 20.49 ±0.33 and 28.21 ±0.73 mg QE g^-1 of dry weight of the sample. The results highlight the importance of reorienting and revaluing J. dioica as an alternative source of metabolites for agricultural and post-harvest formulations.

En las zonas rurales de México los productores agrícolas se enfrentan a diferentes limitantes.

Due to their secondary metabolite content, plant extracts are an alternative for controlling pathogenic organisms in agriculture and post-harvest operations. Botrytis cinerea and Pseudomonas syringae are among the causative agents of diseases and losses in agricultural production. The species Larrea tridentata is abundant in arid and semi-arid zones of Mexico and has no defined use; however, it contains secondary metabolites with microbicidal potential that could aid in biological control and enhance its harvest status. Growth inhibition (halo) of B. cinerea and P. syringae was evaluated by applying alcoholic extract of L. tridentata leaves at doses of 50, 100, 250, 500, 750, 1000 and 2000 µg mL^-1 in vitro, using poisoned medium and potato dextrose agar for the fungus, and the agar well method for the bacteria in a completely randomized design with five replicates. The flavonoids quercetin, apigenin, narigenin, kaempferol and galagenin were identified as possible agents of microbicidal activity. The extract inhibited the growth of B. cinerea from 100 µg mL^-1 and completely inhibited it with 1000 and 2000 µg mL^-1. For P. syringae, inhibition was observed from 250 µg mL^-1, demonstrating that the higher the concentration, the greater the growth inhibitory effect. The secondary metabolite content of the ^{L. tridentata} extract is sufficient to have an impact on microorganisms with economic impact in agriculture.