RESUMO
Colombia is the main producer of cape gooseberry (Physalis peruviana L.), a plant known for its various consumption practices and medicinal properties. This plant is generally grown in eroded soils and is considered moderately tolerant to unfavorable conditions, such as nutrient-poor soils or high salt concentrations. Most studies conducted on this plant focus on fruit production and composition because it is the target product, but a small number of studies have been conducted to describe the effect of abiotic stress, e.g., salt stress, on growth and biochemical responses. In order to better understand the mechanism of inherent tolerance of this plant facing salt stress, the present study was conducted to determine the metabolic and growth differences of P. peruviana plants at three different BBCH-based growth substages, varying salt conditions. Hence, plants were independently treated with two NaCl solutions, and growth parameters and LC-ESI-MS-derived semi-quantitative levels of metabolites were then measured and compared between salt treatments per growth substage. A 90 mM NaCl treatment caused the greatest effect on plants, provoking low growth and particular metabolite variations. The treatment discrimination-driving feature classification suggested that glycosylated flavonols increased under 30 mM NaCl at 209 substages, withanolides decreased under 90 mM NaCl at 603 and 703 substages, and up-regulation of a free flavonol at all selected stages can be considered a salt stress response. Findings locate such response into a metabolic context and afford some insights into the plant response associated with antioxidant compound up-regulation.
Assuntos
Metaboloma , Physalis/crescimento & desenvolvimento , Physalis/metabolismo , Estresse Salino/fisiologia , Análise Discriminante , Germinação/fisiologia , Análise dos Mínimos Quadrados , SalinidadeRESUMO
The metabolite profiling associated with the antioxidant potential of Amazonian fruits represents an important step to the bioactive compound's characterization due to the large biodiversity in this region. The comprehensive bioactive compounds profile and antioxidant capacities of mamey apple (Mammea americana), camapu (Physalis angulata), and uxi (Endopleura uchi) was determined for the first time. Bioactive compounds were characterized by ultra-performance liquid chromatography coupled to high resolution mass spectrometry (UPLC-MSE) in aqueous and ethanolic extracts. Globally, a total of 293 metabolites were tentatively identified in mamey apple, campau, and uxi extracts. The main classes of compounds in the three species were terpenoids (61), phenolic acids (58), and flavonoids (53). Ethanolic extracts of fruits showed higher antioxidant activity and total ion abundance of bioactive compounds than aqueous. Uxi had the highest values of phenolic content (701.84 mg GAE/100 g), ABTS (1602.7 µmol Trolox g-1), and ORAC (15.04 µmol Trolox g-1). Mamey apple had the highest results for DPPH (1168.42 µmol TE g-1) and FRAP (1381.13 µmol FSE g-1). Nuclear magnetic resonance (NMR) spectroscopy results showed that sugars and lipids were the substances with the highest amounts in mamey apple and camapu. Data referring to chemical characteristics and antioxidant capacity of these fruits can contribute to their economic exploitation.
Assuntos
Antioxidantes/farmacologia , Frutas/metabolismo , Magnoliopsida/metabolismo , Mammea/metabolismo , Metaboloma/efeitos dos fármacos , Physalis/metabolismo , Cromatografia Líquida de Alta Pressão , Espectroscopia de Ressonância Magnética , Espectrometria de Massas em TandemRESUMO
Even though Pure Shift NMR methods have conveniently been used in the assessment of crowded spectra, they are not commonly applied to the analysis of metabolomics data. This paper exploits the recently published SAPPHIRE-PSYCHE methodology in the context of plant metabolome. We compare single pulse, PSYCHE, and SAPPHIRE-PSYCHE spectra obtained from aqueous extracts of Physalis peruviana fruits. STOCSY analysis with simplified SAPPHIRE-PSYCHE spectra of six types of Cape gooseberry was carried out and the results attained compared with classical STOCSY data. PLS coefficients analysis combined with 1D-STOCSY was performed in an effort to simplify biomarker identification. Several of the most compromised proton NMR signals associated with critical constituents of the plant mixture, such as amino acids, organic acids, and sugars, were more cleanly depicted and their inter and intra correlation better reveled by the Pure Shift methods. The simplified data allowed the identification of glutamic acid, a metabolite not observed in previous studies of Cape gooseberry due to heavy overlap of its NMR signals. Overall, the results attained indicated that Ultra-Clean Pure Shift spectra increase the performance of metabolomics data analysis such as STOCSY and multivariate coefficients analysis, and therefore represent a feasible and convenient additional tool available to metabolomics.
Assuntos
Espectroscopia de Ressonância Magnética/métodos , Metabolômica/métodos , Frutas/metabolismo , Análise Multivariada , Physalis/metabolismoRESUMO
BACKGROUND: To reduce postharvest losses, substandard fruit and agricultural surpluses can productively be used as raw material for vinegar production. The present study aimed to prepare vinegars from surpluses of physalis (Physalis pubescens L.) and red pitahaya (Hylocereus monacanthus) and then evaluate their sensorial characteristics, antimicrobial activities, total phenolic content (TPC) and total antioxidant capacity by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzo thiazoline-6-sulfonic acid) methods. RESULTS: Two vinegars were produced by submerged fermentation using physalis and red pitahaya fruits surpluses. Physalis and red pitahaya vinegars had 47 and 45 g L-1 acetic acid, respectively, and both vinegars contained approximately 1 g L-1 ethanol. Both vinegars displayed antimicrobial activity against Escherichia coli, Listeria monocytogenes, Staphylococcus aureus and Salmonella enteritidis. The TPC of physalis and red pitahaya vinegar was 0.5638 and 0.3656 g L-1 g gallic acid L-1 for physalis and red pitahaya, respectively. A similar antioxidant activity was detected in both the wines and vinegars. The sensorial analysis revealed that the consumers 'like moderately' each vinegar, and citric aroma was noted in the physalis vinegar. CONCLUSION: In the present study, vinegars with sensorial characteristics approved by consumers were developed using fruit surpluses, adding value through a new product making use of a simple methodology that is both inexpensive and demonstrates a good yield. © 2018 Society of Chemical Industry.
Assuntos
Ácido Acético/metabolismo , Bebidas Alcoólicas/análise , Antibacterianos/química , Antioxidantes/química , Cactaceae/química , Physalis/química , Ácido Acético/análise , Antibacterianos/metabolismo , Antibacterianos/farmacologia , Antioxidantes/metabolismo , Antioxidantes/farmacologia , Cactaceae/metabolismo , Cactaceae/microbiologia , Fermentação , Humanos , Fenóis/química , Fenóis/metabolismo , Fenóis/farmacologia , Physalis/metabolismo , Physalis/microbiologia , PaladarRESUMO
The berry of Physalis peruviana L. (Solanaceae) represents an important socio-economical commodity for Latin America. The absence of a clear phenotype renders it difficult to trace its place of origin. In this study, Cape gooseberries from eight different regions within the Peruvian Andes were profiled for their metabolism implementing a NMR platform. Twenty-four compounds could be unequivocally identified and sixteen quantified. One-way ANOVA and post-hoc Tukey test revealed that all of the quantified metabolites changed significantly among regions: Bambamarca I showed the most accumulated significant differences. The coefficient of variation demonstrated high phenotypic plasticity for amino acids, while sugars displayed low phenotypic plasticity. Correlation analysis highlighted the closely coordinated behavior of the amino acid profile. Finally, PLS-DA revealed a clear separation among the regions based on their metabolic profiles, accentuating the discriminatory capacity of NMR in establishing significant phytochemical differences between producing regions of the fruit of P. peruviana L.
Assuntos
Ecossistema , Frutas/química , Metaboloma , Physalis/química , Compostos Fitoquímicos/análise , Espectroscopia de Ressonância Magnética , Peru , Physalis/metabolismoRESUMO
Changes in abscisic acid (ABA), indole-3-acetic acid (IAA) and jasmonic acid (JA) content in developing calyx, fruits and leaves of Physalis peruviana L. plants were analysed. Plant hormones have been widely studied for their roles in the regulation of various aspects related to plant development and, in particular, into their action during development and ripening of fleshly fruits. The obtained evidences suggest that the functions of these hormones are no restricted to a particular development stage, and more than one hormone is involved in controlling various aspects of plant development. Our results will contribute to understand the role of these hormones during growth and development of calyx, fruits and leaves in cape gooseberry plants. This work offers a good, quickly and efficiently protocol to extract and quantify simultaneously ABA, IAA and JA in different tissues of cape gooseberry plants.
Assuntos
Ácido Abscísico/metabolismo , Ciclopentanos/metabolismo , Flores/crescimento & desenvolvimento , Frutas/metabolismo , Ácidos Indolacéticos/metabolismo , Oxilipinas/metabolismo , Physalis/metabolismo , Frutas/crescimento & desenvolvimento , Physalis/crescimento & desenvolvimento , Folhas de PlantaRESUMO
BACKGROUND: Cape gooseberry (Physalis peruviana) is an exotic fruit highly valued for its organoleptic properties and bioactive compounds. Considering that the presence of phenolics and ascorbic acid could contribute to its functional capacity, it is important to investigate the quality parameters, bioactive contents and functional properties with respect to genotype and ripening time. In this study the genotype effect was evaluated in 15 cultivars for two different harvest times. Changes during maturation were recorded in two commercial cultivars within seven levels of maturity. RESULTS: Multivariate statistical analysis suggested that phenolic content and ORAC value were mainly affected by harvest time and that ascorbic acid content and DPPH level were mainly affected by genotype. In addition, acidity, phenolic content, ORAC value and inhibition of LDL oxidation decreased with maturity, but soluble solids content, ascorbic acid content, ß-carotene content and DPPH-scavenging activity were higher in mature fruits. CONCLUSION: The phenolic content, ascorbic acid content and antioxidant properties of Cape gooseberry fruit were strongly affected by cultivar, harvest time and maturity state. Consequently, the harvest time must be scheduled carefully to gain the highest proportion of bioactive compounds according to the specific cultivar and the environment where it is grown.
Assuntos
Antioxidantes/farmacologia , Ácido Ascórbico/farmacologia , Frutas , Genótipo , Fenóis/farmacologia , Physalis/metabolismo , beta Caroteno/farmacologia , Antioxidantes/metabolismo , Ácido Ascórbico/metabolismo , Compostos de Bifenilo/metabolismo , LDL-Colesterol/sangue , Fluoresceínas , Frutas/crescimento & desenvolvimento , Frutas/metabolismo , Alimento Funcional , Humanos , Ouabaína/análogos & derivados , Fenóis/metabolismo , Physalis/genética , Physalis/crescimento & desenvolvimento , Picratos/metabolismo , Extratos Vegetais/metabolismo , Extratos Vegetais/farmacologia , beta Caroteno/metabolismoRESUMO
Obtaining cells of Physalis pubescens is of interest for studies of primary and secondary metabolic pathways, in the search for new active molecules. Our objectives were to evaluate the regeneration potential of explants from different parts of the plant, growth regulators to be used, and the determination of the growth curve of the callus. We used explants of leaf, root, stem and petiole, cultured on Murashige and Skoog medium with different concentrations of 6-benzylaminopurine and a-naphthaleneacetic acid. The explants from stem and petiole had a higher regeneration potential of the shoot to the treatment with 0.5 mg L-1 6-benzylaminopurine, and the explants of leave and root emitted more roots, with lower production of callus. The tests showed that the regeneration of the whole plant should be done in two steps: cultivation for shoot regeneration and transplantation to a new rooting medium. The growth of callus showed five distinct phases, with accumulation of phenols in the final stages of growth. The levels of soluble sugars increased with age, while reducing sugars showed variations, with higher concentrations in the initial stages of cultivation, with fall and rise again at the final evaluation (28th day).(AU)
A obtenção de células de Physalis pubescens é de interesse para estudos de vias metabólicas primárias e secundárias na busca de novas moléculas ativas. Os objetivos deste trabalho foram avaliar o potencial de regeneração de explantes de diferentes partes da planta, os reguladores de crescimento a serem utilizados e a determinação da curva de crescimento dos calos. Foram utilizados explantes de folhas, raízes, caules e pecíolos, cultivados em meio Murashige e Skoog em diferentes concentrações de 6- benzilaminopurina e -ácido naftaleno acético. Os explantes provenientes de pecíolos e caules apresentaram maior potencial de regeneração da parte aérea com o tratamento com 0,5 mg L-1 de 6- benzilaminopurina, sendo que os explantes de folhas e raízes emitiram mais raízes com menor produção de calos. Os ensaios demonstraram que a regeneração da planta inteira deve ser feita em duas etapas: cultivo para regeneração da parte aérea e repicagem para novo meio de enraizamento. A curva de crescimento de calos apresentou cinco fases distintas, com acúmulo de fenóis nos estágios finais de crescimento. Os teores de açúcares solúveis totais foram crescentes com a idade, enquanto açúcares redutores apresentaram variações com maiores concentrações nas etapas iniciais do cultivo, com queda e novo aumento no final da avaliação.(AU)