Evaluación fisicoquímica y bromatológica de la guayaba agria (Psidium araca) en dos estados de maduración

Mantilla, Cecilia Lara; Nerio, Luz Stella; Zumaqué, Luis E Oviedo

doi:10.21897/rta.v12i1.647

Cited by 9 publications

(8 citation statements)

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“…Particularmente la cutícula, una membrana protectora constituida por ácidos grasos, actúa como una barrera para reducir la pérdida de agua en las frutas, por lo que el fruto incrementa la producción de ácidos grasos ante un déf icit de humedad (Bi et al, 2017). El contenido proteico varió entre los frutos, lo cual puede ser atribuido en una parte al estado de maduración de los frutos cuando fueron colectados (Dilley y Klein, 1969;Lara et al, 2007) y por otra a su etapa de desarrollo, ya que la mayoría de los frutos procedentes de San Isidro y Riveras del Bravo se encontraban en el periodo de climaterio, en el cual hay un incremento de proteína como resultado de la síntesis de enzimas relacionadas con la maduración (Frenkel et al, 1968;Lara et al, 2007). Finalmente, en relación con el contenido de carbohidratos, éstos son sintetizados mediante el proceso de fotosíntesis, proceso que requiere la disponibilidad de agua para el intercambio gaseoso (Martim et al, 2009), lo que permite estimar que la textura y fertilización del suelo favoreció un mayor contenido de carbohidratos en los frutos procedentes de San Agustín y San Isidro en comparación con los de Riveras del Bravo.…”

Section: Resultados Y Discusión Composición Proximalunclassified

Efecto de la salinidad y nitrógeno inorgánico del suelo en los compuestos fenólicos y capacidad antioxidante de Lycium berlandieri

Tapia

Sánchez

Márgez

et al. 2019

Terra

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Polyphenolic compounds are antioxidants compounds mainly present in plants and its concentrations may differ between the same species located at different growing points, since plants produce these compounds for protection against oxidative stress as a result of environmental factors that could affect them. The aims of present research, were: to determine the proximate composition; the polyphenolic compounds concentration and antioxidant activity in fruits of Lycium berlandieri, collected in the three locations of the municipality of Juárez, Chihuahua (Riveras del Bravo, San Isidro and San Agustín), to evaluate the effect of the inorganic nitrogen, alkalinity and salinity of the soil on the content of total phenolic and flavonoids compounds. The humidity content in the fruits of L. berlandieri ranged between 78.2 to 93.3%; the proximal composition of the fruit in dry weight indicated an ash content from 3.6 to 5.3%, fats from 0.9 to 6.7% protein from 9.0 to 15.4% and 75.2 to 85.7% total carbohydrates. In terms of polyphenolic compounds (in dry weight), fruits from San Agustín showed the highest concentration of these compounds, particularly in total phenols 12 mg EAG (P = 0.002) and 9.02 mg EC in flavonoids (P = 0.001). Results of soil analysis indicated that the soil of San Agustín showed the highest concentration of nitrates (88.51 mg kg-1) and a more saline soil (6.04 dS m-1). Overall, the results obtained allowed to attribute that the differences in concentration of polyphenolic compounds in the fruits of L. berlandieri, are related to the salinity of the soil and availability of nitrates, therefore the soil of San Agustín in Ciudad Juárez, Chihuahua it is optimal for the cultivation of L. berlandieri.

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Section: Resultados Y Discusión Composición Proximalunclassified

Efecto de la salinidad y nitrógeno inorgánico del suelo en los compuestos fenólicos y capacidad antioxidante de Lycium berlandieri

Tapia

Sánchez

Márgez

et al. 2019

Terra

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“…Directly, PGP activities induce the promotion of plant growth. Indirectly, microbial participation in the hydrolysis and transformation of complex organic molecules into simpler nutrients makes them more accessible for root adsorption (Lara Mantilla et al, 2011;Velasco-Jiménez et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Likewise, its direct action in stimulating plant growth can effectively contribute to the improvement of agricultural production. Both effects seek to optimize the agronomic use of soils, reduce the demand for water and its corresponding abiotic pressure on aquifers, thus avoiding their contamination and minimizing their overexploitation (Lara Mantilla et al, 2011;Hakim et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Plant growth promotion of the forage plant Lupinus albus Var. Orden Dorado using Pseudomonas agronomica sp. nov. and Bacillus pretiosus sp. nov. added over a valorized agricultural biowaste

et al. 2023

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IntroductionThe overexploitation of natural ecosystems and the evolution of climate change currently force us to design new strategies for more sustainable agronomic uses. The recovery of plant residues, as an alternative to agrochemicals, can help alleviate these problems, for example, through its use for the synthesis of biofertilizers. In this work, the effect of the organic fertilizer matrix ORGAON® from the valorization of horticultural waste is tested, to which two strains of bacteria (and their consortium) are added (SAICEU11T identified as Bacillus pretiosus and SAICEU22T identified as Pseudomonas agronomica), selected for their demonstrated ability to promote plant growth (PGPB), on the lupine forage plant (Lupinus albus).MethodsFor the synthesis of the biofertilizer, both strains were added to the ORGAON® organic matrix separately, until reaching a final optical density (OD) of 0.5 McFarland in each case in the irrigation matrix. As a control, sterile ORGAON® (ORGAON®st) was used, also supplemented with the PGPB strains and a chemical fertilizer widely used in agronomy (Chem-F). With these treatments, a 6-week experiment was started under controlled laboratory conditions and on agricultural substrate, to recreate field conditions as accurately as possible. All the tests were carried out with 9 repetitions and 3 replicates of each treatment. After harvest, the improvements on the following biometric variables were studied for each treatment: total weight (Weight_T, g), shoot weight (Weight_S, g), root weight (Weight_R, g), number of leaves (Leaves, No.), shoot length (Length_S), root length (Length_R) and number of secondary roots (Roots, No.). Likewise, the identification of the tested strains and their description as new species was carried out. For this, they were studied from the phenotypic point of view (Transmission electron microscopy (TEM), metabolic profile, PGP activities, fatty acid profile and Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF)) and genotypic (sequencing of the main housekeeping genes and sequencing of the whole genome, genomic characteristics (dDDH and ANI) and phylogenetic analysis).Results and discussionAfter the statistical analysis of the results, it is shown that the individual addition of both strains on the ORGAON® and ORGAON®st organic matrix improve certain biometric variables. In the case of the SAICEU11T (Bacillus pretiosus) strain, the variables root weight (Weight_R, g), total weight (Weight_T, g) and length of the plant, and number of secondary roots (Roots, No.) significantly improve, while in the case of the strain SAICEU22T (Pseudmonas agronomica), a significant improvement of root length (Length_R) and number of secondary roots (Roots, No.) is demonstrated. On the other hand, the genotaxonomic analysis showed that both species have not been described to date. The identification based on the main housekeeping genes, show that for the Bacillus strain (SAICEU11T) the sequence similarity of the 16S rRNA was 100%, gyrB 92.69%, rpoB 97.70% and rpoD 94.67%. For the Pseudomonas strain (SAICEU22T) the results were 100% for 16S rRNA, 98.43% for rpoD and 96.94% for gyrB. However, in both cases, the dDDH and ANI values, as well as the phylogenetic analysis, show that both species are below the species threshold, which would support the hypothesis that both are new species, in line with the chemotaxonomic results obtained by MALDI-TOF spectrometry and fatty acid profile. To verify the biosafety in their handling and release into the natural environment, we have ruled out the presence of genes that encode virulence factors or resistance to antibiotics, concluding that they are suitable for use in the field to improve the yield of crop plants. Type strains are SAICEU11T (= DSM 114702T = CECT30674T) for Bacillus pretiosus and SAICEU22T (= DSM 114959T = CECT30673T) for Pseudomonas agronomicae.

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“…The origin of VC is organic matter, which can be composed of plant or animal waste in any state of decomposition, as well as fruit and vegetable waste degraded by the action of microorganisms and enzymes as well as by the passage of this material through the digestive tract of earthworms [8,10]. The presence of auxins in VC has been largely associated with the presence of auxin-producing microorganisms [11]; among the genera that can be mentioned are Agrobacterium, Azotobacter, Azospirillum, Bacillus, Pseudomonas, and Serratia [12][13][14]. In this regard, VC has gained great interest 2 for the improvement of agricultural practices and from an economic point of view [15].…”

Section: Introductionmentioning

confidence: 99%

Influence of Vermicompost on the Concentration of Exogenous Indole-3-Acetic Acid and Its Effect on the Development of Tomato Plants (Lycopersicum esculentum L.)

Segura-Castruita,

Valdivia-Dávila,

Yescas-Coronado

et al. 2024

Preprint

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Exogenous auxins such as indole-3-acetic acid (IAA) can modulate the effect of a plant's endogenous auxins. The objectives of this work were to quantify the concentration of IAA in sand-based substrates with vermicompost (S-VC), to establish the relationship between the concentration of exogenous IAA and the amount of vermicompost (VC), as well as determine its influence on the development of tomato plants. S-VC substrates with different percentages based on volume (0, 20, 40 and 50% VC) placed in pots, with five replicates and randomly distributed, were used to transplant tomato seedlings. In each substrate, the concentration of IAA was determined at the beginning and at the end of a culture cycle, as well as the microbial load; In addition, some performance components were measured in the plants. The results showed that gram-positive bacteria were found in the substrates with VC, whose colony-forming units were related to the concentration of IAA and the amount of VC in the substrates. Therefore, the IAA concentration presented a linear and positive relationship with the amount of VC in the substrates (R2 = 0.9171, at the beginning and R2 = 0.9712, at the end of the experiment).

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Evaluación fisicoquímica y bromatológica de la guayaba agria (Psidium araca) en dos estados de maduración

Cited by 9 publications

References 0 publications

Efecto de la salinidad y nitrógeno inorgánico del suelo en los compuestos fenólicos y capacidad antioxidante de Lycium berlandieri

Efecto de la salinidad y nitrógeno inorgánico del suelo en los compuestos fenólicos y capacidad antioxidante de Lycium berlandieri

Plant growth promotion of the forage plant Lupinus albus Var. Orden Dorado using Pseudomonas agronomica sp. nov. and Bacillus pretiosus sp. nov. added over a valorized agricultural biowaste

Influence of Vermicompost on the Concentration of Exogenous Indole-3-Acetic Acid and Its Effect on the Development of Tomato Plants (Lycopersicum esculentum L.)

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