Amino Derivatives Research Articles

Metabolomics analysis of germinated sesame (Sesamum indicum L.) seeds: Possibility of incorporating short-term germination treatments into the sesame production process

Germination is an effective means to improve the nutritional value of sesame seeds. However, it is not clear whether it would be feasible to improve the nutritional value of sesame seeds by short-term germination treatments without causing substantial loss of oil. In this study, changes in the metabolite profiles of sesame seeds during short-term germination were analyzed by UPLC-MS/MS-based metabolomics. After 20 h of germination, the total phenolic and total flavonoid contents of sesame seeds were elevated by 2.16 and 1.53 folds, respectively, and the antioxidant capacity of their extracts was also significantly increased. At the same time, the oil content was not reduced. In metabolomics analysis, 48 bioactive compounds (19 terpenoids, 10 amino acids and derivatives, 7 flavonoids, 8 cinnamic acid derivatives, and 4 organic acids) were identified as key metabolites associated with elevated antioxidant capacity. Amino acid metabolism and the tricarboxylic acid cycle were the major metabolic pathways during sesame seed germination. Overall, it was possible to use short-term germination treatments as a means of pretreatment during the processing of sesame seeds products.

Dimethyl-Sulfoxide-Free Cell Cryoprotectant Derived from Amino Acids.

With the large-scale applications of cryopreservation technology in the cell therapy fields, traditional permeable cryoprotectants (CPAs) have led to serious issues, such as cell cycle arrest, inhibition of cell proliferation and differentiation, apoptosis, altered gene expression, etc. Development of green, non-toxic cryoprotectants is critically needed. Amino acids could serve as substrates for protein and cellular metabolism and as cryoprotectants with non-toxicity, balancing the intracellular water osmotic pressure. Current research on amino acids as cryoprotectants is hindered by several limitations, including unclear protection mechanisms, cryopreservation methods, and poor efficacy of individual formulations. Therefore, three specific amino acids and derivatives, including l-proline, l-carnitine, and betaine, as cryoprotectants were used for two types of cell cryopreservation. Single-factor experiments were conducted to obtain the optimal concentration range for each of the three amino acid cryoprotectants. On the basis of the key thermophysical parameters, the ability to inhibit ice crystals, and the effect after cryopreservation, multivariate orthogonal experiments were carried out to evaluate the actual effect of the three-component mixed cryoprotectant on cell cryopreservation. In comparison to the gold standard of 10% dimethyl sulfoxide (DMSO) for cell cryopreservation, the mixed cryoprotectant derived from amino acids achieves comparable preservation efficacy at lower concentrations with a convenient application method, which offers guidance for DMSO-free cryoprotectants.

Genomic characterisation of an extended-spectrum β-Lactamase-producing Klebsiella pneumoniae isolate assigned to a novel sequence type (6914)

BackgroundCow milk, which is sometimes consumed raw, hosts a plethora of microorganisms, some of which are beneficial, while others raise food safety concerns. In this study, the draft genome of an extended-spectrum β-lactamase-producing Klebsiella pneumoniae subsp. pneumoniae strain Cow102, isolated from raw cow milk used to produce traditional foods in Nigeria, is reported.ResultThe genome has a total length of 5,359,907 bp, with 70 contigs and a GC content of 57.35%. A total of 5,244 protein coding sequences were detected with 31% mapped to a subsystem, and genes coding for amino acids and derivatives being the most prevalent. Multilocus sequence typing revealed that the strain had new allelic profile assigned to the novel 6914 sequence type possessing capsular and lipopolysaccharide antigen K locus 122 with an unknown K type (KL122) and O locus O1/O2v2 with type O2afg, respectively. A total of 28 resistance-related genes, 98 virulence-related genes, two plasmids and five phages were identified in the genome. The resistance genes oqxA, oqxB and an IS3 belonging to cluster 204 were traced to bacteriophage Escher 500,465. Comparative analysis predicted one strain specific orthologous group comprising three genes.ConclusionThis report of a novel sequence type (ST6914) in K. pneumoniae presents a new allelic profile, indicating ongoing evolution and diversification within the species. Its uniqueness suggests it may represent a locally evolved lineage, although further sampling would be necessary to confirm this hypothesis. The strain’s multidrug resistance, virulence gene repertoire, and isolation from animal milk render it a potentially significant public health concern, underscoring the importance of genomic surveillance in non-clinical settings to detect emerging strains. Further research is required to fully characterise the capsular K type of ST6914.

Integrative Analysis of Metabolome and Transcriptome Reveals Molecular Mechanisms Regulating Oil and Protein Content in Peanut (Arachis hypogaea L).

Peanut (Arachis hypogaea L.) is an important source of edible vegetable oils and plant proteins globally. However, the complex mechanisms regulating the oil and protein contents of peanut seeds remain unclear. Here, comparative broad-target metabolomics and quantitative lipidomics, together with transcriptome analysis, of peanut seeds at four developmental stages from the high-oil content variety "YH15" and high-protein content variety "KB008" were performed to search for oil and protein content control genes. A total of 984 differential metabolites, including 128 amino acids and derivatives and 310 differentially accumulated lipids, were identified between "YH15" and "KB008" in four seed developmental stages. The weighted gene coexpression network analysis and module-trait relationship analysis revealed that MEbrown, MEyellow, and MEturquoise modules were key contributors to the quality discrepancies observed between "YH15" and "KB008." Crucial genes potentially regulating the differences in oil and protein contents between "YH15" and "KB008" were identified within the aforementioned three modules, including genes involved in amino acid synthesis and degradation, nitrogen allocation, triglyceride synthesis and degradation, and fatty acid synthesis and degradation, as well as transcription factors. Overall, this study provides valuable insights into the molecular regulation of oil and protein contents in peanut seeds and may help cultivate specialized peanut varieties with enhanced nutritional and economic values.

Aerospace Mutagenesis Increases the Content of Characteristic Metabolites of Tea Tree Leaves and Enhances Taste Characteristics of Tea Leaves.

Aerospace mutagenesis can alter the physiological metabolism and growth of tea trees and affect tea leaf quality. In this study, the effect of aerospace mutagenesis on the metabolite content and taste characteristics of Dahongpao fresh leaves and raw tea were analyzed. The results showed that aerospace mutagenesis had little effect on the composition and total amount of metabolites in fresh leaves and raw tea, but significantly changed the content of different metabolites. Aerospace mutagenesis improved the content of lipids, lignans and coumarins, and amino acids and derivatives, which in turn enhanced the aroma and fresh and brisk taste of fresh leaves. Aerospace mutagenesis increased the content of alkaloids, tannins, flavonoids, lignans and coumarins, amino acids and derivatives, and organic acids in raw tea, and enhanced the bitterness, mellowness, and fresh and brisk taste of raw tea. This study provides a basis for the development of aerospace mutagenesis Dahongpao tea products and the establishment of processing techniques.

Metabolomic Diversity in Polygonatum kingianum Across Varieties and Growth Years.

Polygonatum rhizome is a traditional Chinese medicine of the same origin as food and medicine, and it has high economic value and social benefits. To screen the excellent germplasm resources of Polygonatum kingianum (P. kingianum) and clarify the nutritional and medicinal value of the rhizome of P. kingianum, we used widely targeted metabolomics to analyze the traits and metabolomics of rhizomes of different germplasms of P. kingianum from different growth years. The results showed that different germplasms and growth years of P. kingianum were rich in different nutritional and medicinal components. Among them, Polygonatum kingianum 'Linyun 1' rhizome (PWR) was richer in amino acids and derivatives, alkaloids, and phenolic acids, while Polygonatum kingianum rhizome (PRR) was richer in flavonoids, organic acids, and phenolic acids. Most of the differential compounds were mainly enriched in PRR when the growth year was one, and PWR had a greater variety and higher content of differential compounds in the third year, which also reflected the advantages of Polygonatum kingianum 'Linyun 1' (P. kingianum 'Linyun 1') as an excellent new variety of P. kingianum. The Kyoto Encyclopedia of Genes and Genomes (KEGG) metabolic pathway analysis showed that in P. kingianum with the same age and different germplasms, the significantly enriched metabolic pathway was more active in biosynthesis in PWR. In the same germplasm of P. kingianum from different years, the metabolites involved in PRR were mainly the highest in one-year-old P. kingianum (PR-1) or three-year-old P. kingianum (PR-3), and the metabolites involved in PWR were mainly the highest in three-year-old P. kingianum 'Linyun 1' (PW-3). The above results showed that the three-year-old PWR had more advantages based on chemical substances. Therefore, this study provided a new theoretical reference for the development of P. kingianum products and the breeding of new varieties.

Computational Integration of TRPV4 Antagonists: 3D QSAR, Molecular Docking, Molecular Dynamics Simulations, ADME/Tox, and Retrosynthesis studies

AbstractTRPV4 antagonists that could be potential drugs for treatment and management of neuropathic pain. This study was conducted to systematically design several amino derivatives of 2,4′‐dimethyl‐[4,5′‐bithiazol]‐2‐yl as antagonists. In silico computational methods, such as 3D quantitative structure‐activity relationship modeling (3D‐QSAR), molecular docking, and pharmacokinetic property assessment (ADMET), were used to discover new compounds with strong antagonistic activity. The best‐performing 3D‐QSAR model was developed using a partial least squares approach and comparative molecular similarity analysis (CoMSIA). The developed model demonstrated an excellent ability to correlate and predict properties (R2 = 0.932, Q2 = 0.620, and SEE = 0.109). It was observed that variations in biological activity were significantly influenced by interactions with steric, electrostatic, and hydrophobic fields. Molecular docking was used to validate the 3D‐QSAR methods and to explain the binding site and interactions between the most active ligands and the receptor. Based on these results, a new series of compounds was predicted. The best‐anchored molecules underwent MD simulation to confirm their dynamic behavior and stability, and they also underwent retrosynthetic analysis to assist in their synthesis.

Mediterranean Diet Pattern: Potential Impact on the Different Altered Pathways Related to Cardiovascular Risk in Advanced Chronic Kidney Disease.

Cardiovascular disease (CVD) remains the most common cause of mortality in chronic kidney disease (CKD) patients. Several studies suggest that the Mediterranean diet reduces the risk of CVD due to its influence on endothelial function, inflammation, lipid profile, and blood pressure. Integrating metabolomic and proteomic analyses of CKD could provide insights into the pathways involved in uremia-induced CVD and those pathways modifiable by the Mediterranean diet. We performed metabolomic and proteomic analyses on serum samples from 19 patients with advanced CKD (aCKD) and 27 healthy volunteers. The metabolites were quantified using four different approaches, based on their properties. Proteomic analysis was performed after depletion of seven abundant serum proteins (Albumin, IgG, antitrypsin, IgA, transferrin, haptoglobin, and fibrinogen). Integrative analysis was performed using MetaboAnalyst 4.0 and STRING 11.0 software to identify the dysregulated pathways and biomarkers. A total of 135 metabolites and 75 proteins were differentially expressed in aCKD patients, compared to the controls. Pathway enrichment analysis showed significant alterations in the innate immune system pathways, including complement, coagulation, and neutrophil degranulation, along with disrupted linoleic acid and cholesterol metabolism. Additionally, certain key metabolites and proteins were altered in aCKD patients, such as glutathione peroxidase 3, carnitine, homocitrulline, 3-methylhistidine, and several amino acids and derivatives. Our findings reveal significant dysregulation of the serum metabolome and proteome in aCKD, particularly in those pathways associated with endothelial dysfunction and CVD. These results suggest that CVD prevention in CKD may benefit from a multifaceted approach, including dietary interventions such as the Mediterranean diet.

Gradual spin crossover behavior encompasing room temperature in an iron(II) complex based on a heteroscorpionate ligand.

In this paper, we report the synthesis of six novel triazole-based heteroscorpionate ligands based on heterocycle metathesis reactions and their iron(II) complexes. Single crystal structure analyses were performed, the spectroscopic and magnetic properties of the obtained complexes were studied and their spin crossover-structural relationships were compared to those obtained for their pyrazole-based analogues reported in the literature. In particular, the amino derivative complex bis[hydrobis(pyrazol-1-yl)(3-amino-1,2,4-triazol-1-yl)]iron(II) obtained by post-synthetic catalytic nitro-group reduction under pressure of hydrogen in an autoclave presents a scarce gradual spin crossover behavior at room temperature. The profile of the SCO curve can be explained by the presence of only relatively weak H bonds, spreading only in one dimension. Among the interesting spin transition behaviors observed for the different complexes, such stable, complete and gradual spin crossover at room temperature makes this neutral complex a good candidate for sublimation and future investigation as an active element notably for thermoreflectance-based surface microthermometry applications.

DEVELOPING CEREBROSPINAL flUID METABOLOMIC BIOMARKERS FOR MINIMAL RESIDUAL DISEASE AND RELAPSE IN EPENDYMOMA AND MEDULLOBLASTOMA

Abstract AIMS Relapse rates of 30% and 50% in medulloblastoma and ependymoma lead to poor outcomes for paediatric brain tumours. Occurring usually within two years, relapses imply minimal residual disease (MRD) is present below the imaging detection threshold. Patient outcomes might be improved by diagnosing MRD using a sensitive, minimally invasive cerebrospinal fluid (CSF) liquid biopsy, as CSF is proximal to tumour. Metabolites arising from aberrant cancer metabolism may be biomarkers in CSF. METHOD With only 25µl CSF, extracted with 75µl methanol, liquid chromatography coupled with tandem high-resolution mass spectrometry (LC-MS/MS) could differentiate these paediatric brain tumours (n=47; day 14 post-surgery) from controls (n=49). RESULTS Fourteen metabolites were increased in abundance in tumours and four decreased compared to controls. These included amino acids and derivatives (n=8), metabolites in one carbon metabolism (n=1), carnitine cycle (n=2), aerobic glycolysis (n=2), purine catabolism (n=2), ascorbate degradation (n=1) and creatinine synthesis (n=2). From those, betaine/creatinine ratio gave an area under the curve (AUC) of 0.96 (excellent) in receiver operating curve analysis. Using a cut-off ratio of 0.1775 for discriminating brain tumours from controls, had sensitivity and specificity of 92% and 89%. Specifically identifying tumours, a ratio of betaine/threonate with cut-off 2.1514 discriminated ependymomas from controls (sensitivity/specificity 92%/91%). A ratio of malic acid/hypoxanthine with cut-off 0.04429 discriminated medulloblastomas from controls (sensitivity/specificity 100%/98%). Medulloblastomas (n=14) were largely similar to ependymomas (n=33); nevertheless, three metabolites met the criteria of corrected p<0.05. A ratio of glutarate semialdehyde/malic acid with cut-off 0.04243 discriminated ependymomas from medulloblastomas (sensitivity/specificity 79%/82%) in a good model (AUC 0.85). CONCLUSION This is the first report of CSF metabolites in ependymoma. Ratios between metabolites levels could be useful as biomarkers to detect brain tumours and distinguish brain tumour type specifically and sensitively. Further work to develop a liquid biopsy test for the detection of MRD is ongoing.

Colamine and tartaric acid based innovative antioxidant and anti-spoilage food additive for fish product industry

Background: Fish farming is a vital sector of the global food industry, facing the challenge of developing efficient, chemical-free feeds for high-value fish species. To address this, innovative antimicrobials and antioxidants are crucial. This study explores the antioxidant and anti-spoilage properties of novel N-containing derivatives of natural L-tartaric acid (TA), a safe and widely used food additive. Objectives: Current research is devoted to L-tartrates’ new derivatives’ anti-spoilage and antioxidant potential as an innovative combined feed additive for fish farming. Results: TA Cyclic imide obtaining modified technology was advised. According to the obtained results, TA itself didn’t show antioxidant activity: nevertheless, in combination with new N-containing derivatives, it increased the antioxidant properties of L-ascorbic acid by about 20%. The studied TA amino-derivatives have demonstrated the emphasized activity against the fish-pathogenic Pseudomonas, Streptococcus, and other pathogenic microbes. Conclusions: TA and tartrates, in combination with new N-containing derivatives generated based on the vital compound colamine, have demonstrated several synergic antioxidant activities. They can be recommended for potential application as a cheap and effective alternative to classical anti-spoilage and preservative agents for animal feed production. Also, they showed the prolongation of feed expiration periods. It will significantly increase the quality of final fish products. A further detailed study of toxicological properties of amino derivatives is planned. Keywords: tartaric acid derivative, colamine, antimicrobial, antioxidant, anti-spoilage, feed additive

Biogenic synthesis and characterization of antimicrobial, antioxidant, and antihemolytic zinc oxide nanoparticles from Desertifilum sp. TN-15 cell extract

Cyanobacteria, being a prominent category of phototrophic organism, exhibit substantial potential as a valuable source of bioactive compounds and phytonutrients, including liposomes, amino derivatives, proteins, and carotenoids. In this investigation, a polyphasic approach was employed to isolate and characterize a newly discovered cyanobacterial strain from a rice field in the Garh Moor district of Jhang. Desertifilum sp. TN-15, a unique and less explored cyanobacterial strain, holds significant promise as a novel candidate for the synthesis of nanoparticles. This noticeable research gap underscores the novelty and untapped potential of Desertifilum sp. TN-15 in the field of nanomedicine. The characterization of the biogenically synthesized ZnO–NPs involved the application of diverse analytical techniques. Ultraviolet–visible spectroscopy revealed a surface plasmon resonance peak at 298 nm. Fourier transform infrared spectral analysis was utilized to confirm the involvement of biomolecules in the biogenic synthesis and stability. Scanning electron microscopy was employed to probe the surface morphology of the biogenic ZnO–NPs unveiling their size of 94.80 nm and star-shaped. Furthermore, X-ray diffraction analysis substantiated the crystalline nature of ZnO–NPs, with a crystalline size measuring 46 nm. To assess the physical stability of ZnO–NPs, zeta potential and dynamic light scattering measurements were conducted, yielding values of + 31.6 mV, and 94.80 nm, respectively, indicative of favorable stability. The antibacterial capabilities of Desertifilum sp. TN-15 are attributed to its abundance of bioactive components, including proteins, liposomes, amino derivatives, and carotenoids. Through the synthesis of zinc oxide nanoparticles (ZnO–NPs) with this strain, we have effectively used these chemicals to generate nanoparticles that exhibit noteworthy antibacterial activity against Staphylococcus aureus (MIC: 30.05 ± 0.003 µg/ml). Additionally, the ZnO–NPs displayed potent antifungal activity and antioxidant properties, as well as significant antihemolytic effects on red blood cells (IC50: 4.8 µg/ml). Cytotoxicity assessment using brine shrimps revealed an IC50 value of 3.1 µg/ml. The multifaceted actions of the biogenically synthesized ZnO–NPs underscore their potential applications in pharmacological and therapeutic fields. This study proposes a novel method for ZnO–NPs production utilizing the recently identified cyanobacterial strain Desertifilum sp. TN-15, highlighting the growing significance of biological systems in the environmentally friendly fabrication of metallic oxide nanomaterials.

Sustainable synthesis of multifaceted copper oxide nanoparticles from Euphorbia tirucalli: Unveiling antimicrobial and catalytic potential

This work presents Euphorbia tirucalli mediated green synthesis of multi-purpose copper oxide nanoparticles (ET@CuO-NPs) exhibiting enhanced antimicrobial activity. These plant extract capped nanoparticles were characterized using sophisticated techniques such as FTIR, Raman, UV–Vis, SEM, HR-TEM, DLS, zeta potential, XPS and XRD. A uniform rod-shaped morphology was observed in HR-TEM images with size around 50 nm. Antibacterial and antifungal activity was investigated by agar well diffusion method. The bactericidal action was confirmed by zone of inhibition of 28 mm and 34 mm respectively against gram-negative and a gram-positive bacterium. The nanoparticles also show excellent antioxidant activity via free radical scavenging by DPPH. The scope of ET@CuO-NPs was extended to catalytic reduction of nitroaromatic compounds into their corresponding amino derivatives. The reduction of 4-nitrophenol, a model nitroaromatic pollutant could be completed within just 6 min with a recycling efficiency of 8 cycles. Thus, the multifaceted ET@CuO-NPs exhibited diverse therapeutic and catalytic potential.

Binary Catalytic Hydrogen/Deuterium Exchange of Free α-Amino Acids and Derivatives.

The increasing demand for deuterium-labeled amino acids and derivatives has heightened interest in direct hydrogen/deuterium exchange reactions of free amino acids. Existing methods, including biocatalysis and metal catalysis, typically require expensive deuterium sources or excessive use of deuterium reagents and often struggle with site selectivity. In contrast, this binary catalysis system, employing benzaldehyde and Cs2CO3 in the presence of inexpensive D2O with minimal stoichiometric quantities, facilitates efficient hydrogen/deuterium exchange at the α-position of amino acids without the need for protecting groups in the polar aprotic solvent DMSO. The process is highly compatible with most natural and non-natural α-amino acids and derivatives, even those with potentially reactive functionalities. This advancement not only addresses the cost and efficiency concerns of existing methods but also significantly broadens the applicability and precision of deuterium labeling in biochemical research.

Electro- and Mechanochemical Strategy as a Dual Synthetic Approach for Biologically Relevant 3-Nitro-imidazo-[1,2-a]pyridines.

We herein disclose a dual synthetic approach involving electrochemical and mechanochemical strategies for diversely functionalized 3-nitro-2-aryl-immidazo[1,2-a]pyridines. Both methods offer a practical and straightforward alternative route for accessing this important class of biologically promising nitrogen-containing heterocycles. Significant advantages of the newly developed methods include mild and energy-efficient reaction conditions, avoidance of transition metal catalysts, external heating and additional oxidants, shorter reaction times, good to excellent yields, broad substrate scope, gram-scale applicability, operational simplicity, and eco-friendliness. Furthermore, a synthetic application was extended by successfully reducing synthesized 3-nitro-2-aryl-immidazo[1,2-a]pyridines to their corresponding amino derivatives.

A comprehensive study of the instability of direct-steam-infusion UHT milk: Insights from metabolomics and proteomics

Direct-steam-infusion UHT (dUHT) milk retains more nutrients compared to traditional UHT milk but challenged by age gelation, impacting shelf life. To understand this instability, raw milk, dUHT milk, and age gelation milk were comprehensively studied using metabolomics and proteomics. 2496 metabolites were detected, including amino acids and derivatives, nucleotides and nucleotide derivatives, lipids and fatty acids, and organic acids and derivatives. The most significant change after age gelation was in amino acids, particularly L-lysine, which emerged as the most important indicator related to protein hydrolysis. Proteomics revealed increased calcium-binding proteins, protein fragments, and various proteases in age gelation milk. Ribonuclease A family, cathepsin D, carboxypeptidases, serine/threonine-protein kinase, PLK serine protease 23 contributed to metabolite changes and protein hydrolysis during age gelation. These findings suggested that the hydrolysis of various enzymes altered the overall composition of milk, leading to age gelation, which provided new insights into the instability of dUHT milk.

Widely targeted metabolomics analysis reveals the effect of soybean hull polysaccharides on nonvolatile components of plant-based yogurt and its metabolic pattern

Soybean hull polysaccharides (SHPS) enhance the physicochemical properties of plant-based yogurt. However, their effects on the nutritional profile and biochemical mechanisms remain unclear. This study aimed to assess the impact of SHPS addition on the nonvolatile components of plant-based yogurt and its underlying mechanisms through widely targeted metabolomics analysis. The results demonstrated that the addition of SHPS (0.2 %–1.0 % w/v) enhanced the levels of free amino acids, sugars, and organic acids, with the addition of 0.6 % w/v being particularly effective in improving yogurt quality. Widely targeted metabolomics analysis revealed 278 differential metabolites between yogurt supplemented with 0.6 % SHPS (SPY) and the control sample. SHPS increased the content of various metabolites, including amino acids and derivatives, saccharides, organic acids, and flavonoids, among others. Key metabolic pathways affected by SHPS included pantothenate and CoA biosynthesis; valine, leucine, and isoleucine biosynthesis; and benzoate degradation. As the primary component of SHPS, galacturonic acid affected the metabolic products in yogurt by participating in the pentose and glucuronate interconversions and ascorbate and aldarate metabolism pathways. These findings elucidate the role of SHPS in modulating the nutritional composition of plant-based yogurt, offering valuable insights into its functional mechanisms in food processing.

Synthesis, Identification, and Docking Study of Novel Derivatives of Aziridine

Aziridines are three-membered ring heterocycles that include nitrogen and are well-known for their employment as reactive intermediates in the production of chiral amino alcohols, azomethine ylides, and derivatives of amino acids. The current study was based on the synthesis, identification, docking study and evaluation of antioxidant potential of novel derivatives of aziridine. The novel derivatives of aziridine were synthesized and identified the synthesized aziridine derivatives based on physicochemical properties i.e., boiling point, Rf value, FTIR, NMR and Mass spectroscopy and Docking study. With a binding energy of -6 to -9 Kcal/mol, every chemical has demonstrated effective docking inside the antioxidant activity protein's active region. We contrasted the anticipated docking data with proteins known to have antioxidant action. In results, the % yield was observed as 48.24, 49.72, 48.39 and 49.12 in compound A4, A7, A10 and A12, respectively. Highest Rf values were observed in A3, A5, A7 and A 11 as 0.74, 0.76, 0.77, and 0.74, respectively. A4 showed boiling point 210ºC. Based on docking study, all the compounds were found active, however compound A1, and A4 were demonstrated the highest binding energy (affinity). Derivatives of aziridine A2, A3, A5, A6, A8, A9, A10, A11, A12 were found also found active with some moderate binding affinity. It concluded that 12 novel derivatives of aziridine were synthesized and characterized with their physicochemical properties and spectral analysis (NMR, Mass, FTIR). In docking study, compounds A1 and A4 demonstrated the highest binding affinity among all 12 aziridine derivatives. Thus, active aziridine derivatives might be used in the evaluation of the biological potential. It suggests to perform the acute oral toxicity of the synthesized aziridine derivatives and antioxidant activity.

Effects and mechanisms of microbial ecology and diversity on phytoremediation of cadmium-contaminated soil under the influence of biodegradable organic acids

In recent years, heavy metal pollution has become a global environmental problem and poses a great threat to the health of people and ecosystems. Therefore, strategies for the effective remediation of Cd from contaminated soil are urgently needed. In this study, ryegrass was utilized as a remediation plant, and its remediation potential was enhanced through the application of Citric Acid (CA) in conjunction with Bacillus megaterium (B. megaterium). The P3 treatment (CA + Bacillus megaterium) exhibited a significantly higher efficiency in promoting cadmium extraction by ryegrass, resulting in a 1.79-fold increase in shoot cadmium accumulation compared to the control group (CK) with no Bacillus megaterium or CA. Moreover, the P3 treatment led to an increased abundance of Actinobacteriota, Acidobacteriota, and Patescibacteria in the rhizosphere. The concentration of amino derivatives (such as betaine, sulfolithocholylglycine, N-alpha-acetyl-lysine, glycocholic acid, arginyl-threonine) showed significant upregulation following the P3 treatment. In summary, this study proposes a viable approach for phytoremediation of soil contaminated with cadmium by harnessing the mobilizing abilities of soil bacteria.

Integrated transcriptomic and metabolomic analysis reveals the molecular profiles of dynamic variation in Lilium brownii var. viridulum suffering from bulb rot.

Lilium brownii var. viridulum, known as Longya lily, is a well-known medicinal and edible plant in China. Bulb rot is a common disease in Longya lily cultivation that severely affects the yield and quality of lilies. According field investigations, we found that different Longya lily plants in the same field had different degrees of resistance to root rot. To find the reasons leading to the difference, we performed metabolomic and transcriptomic analyses of Longya lily with different degrees of disease. The transcriptomic analyses showed that the number of differentially expressed genes increased in early and mid-stage infections (LYBH2 and LYBH3), while decreased in late-stage infection (LYBH4). A total of 2309 DEGs showed the same expression trend in diseased bulb compared healthy bulb (LYBH1). The transcription factors (TFs) analysis of DEGs showed that several common TFs, like WRKY, bHLH, AP2/ERF-ERF and MYB, were significantly activated in bulbs after decay. The metabolomic analyses showed that there were 794 differentially accumulated metabolites, and metabolites with significant changes in relative content largely were phenolic acids, followed by flavonoids and amino acids and derivatives. The combined analysis of transcriptome and metabolome indicated that phenylpropanoid biosynthesis pathway was crucial in Longya lily resistance to bulb rot. Therefore, we speculated that the different degree of resistance to bulb rot in Longya lily may be related to the transcript levels of gene and contents of metabolites in the phenylpropanoid biosynthesis pathway. Overall, these results elucidate the molecular responses of Longya lily to bulb rot and lay a theoretical foundation for breeding resistant varieties.