Background: Phlomis capitata is an endemic species of flowering aromatic and medicinal plant in the family Lamiaceae, native to regions of the Mediterranean and nearby areas. Understanding the chemical compounds present in P. capitata can reveal potential medicinal properties. The present study examines the quantification of bioactive phytochemicals, antioxidant capacity and enzyme inhibitory evaluation of P. capitata extract against key enzymes involved in the pathogenesis of Alzheimer's, diabetes mellitus, epilepsy and glaucoma for the first time. The mechanisms of enzyme inhibition activity of the predominant compounds in extract were also interpreted by molecular docking studies. Chemical characterization of the extract was performed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) (phytochemical profile) and inductively coupled plasma-mass spectrometry (mineral composition) analysis. Furthermore, the binding interactions of major phytochemicals with all enzymes were investigated by molecular docking studies.
Results: LC-MS/MS analysis of the P. capitata revealed the identification of 19 compounds predominated by quinic acid (4.883 mg g-1), followed by chlorogenic acid (4.36 mg g-1), vanilic acid (3.405 mg g-1), naringenin (2.571 mg g-1) and cyranoside (1.101 mg g-1). It was determined that the mineral element was rich (K, Ca, Al and Mg) and did not exceed the toxicity limits. The P. capitata extract demonstrated remarkable antioxidant activities in the order: 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (IC50: 20.533 μg mL-1) < 2,2-diphenyl-1-picrylhydrazyl (IC50: 23.151 μg mL-1) < N,N-dimethyl-p-phenylenediamine (IC50: 45.221 μg mL-1) and cupric reducing antioxidant capacity (0.889 μg mL-1) < Fe3+ reducing (0.969 μg mL-1) < ferric reducing antioxidant potency (0.974 μg mL-1). Moreover, of all the enzyme inhibitory assays (acetylcholinesterase, butyrylcholinesterase, α-amylase, α-glucosidase, and human carbonic anhydrases I and II), the extract showed outstanding inhibitory activities (IC50 values of 3.26, 7.15, 6.15, 6.81, 15.21 and 11.93 μg mL-1, respectively).
Neeharika B, Vijayalaxmi K G, Suvarna V Chavannavar, Mohan Chavan
Background: The edible seeds of Ocimum gratissimum and Ocimum basilicum were found to be a potent source of phytochemicals with noteworthy antioxidant, antidiabetic, and antimicrobial properties. This study aimed to investigate the impact of germination and extraction solvents (ethanol (EtOH), distilled water) on the therapeutic properties exhibited and the ability of seed extracts to act as natural food preservatives.
Results: The EtOH extracts of germinated O. gratissimum and O. basilicum seeds exhibited more phytoconstituents content with significantly higher phenols (21.03 ± 0.01 mg gallic acid equivalent (GAE)/g and 21.46 ± 0.01 mg GAE/g respectively) and flavonoids (11.92 ± 0.03 mg quercetin equivalent (QE)/g and 14.45 ± 0.04 mg QE/g respectively) than other extracts did. Thus, they exhibited superior antioxidant potential with substantially lower half-maximal inhibitory concentration (IC50) values for scavenging 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) cation radical (0.013 ± 0.00 mg mL-1 and 0.007 ± 0.00 mg mL-1 respectively) and superoxide anion radical (4.33 ± 0.01 mg mL-1 and 4.14 ± 0.00 mg mL-1 respectively) and for inhibiting lipid oxidation (2.57 ± 0.00 mg mL-1 and 2.33 ± 0.00 mg mL-1 respectively) compared with other extracts. Further, they exhibited better antidiabetic potential with substantially lower IC50 values for inhibiting α-amylase activity (0.93 ± 0.01 mg mL-1 and 1.01 ± 0.01 mg mL-1 respectively) and α-glucosidase activity (0.60 ± 0.01 mg mL-1 and 0.51 ± 0.01 mg mL-1 respectively). Also, they showed superior antimicrobial potential with higher inhibition zones for Bacillus subtilis (13.98 ± 0.18 mm, 17.02 ± 0.18 mm respectively), Vibrio parahaemolyticus (19.00 ± 0.20 mm, 22.58 ± 0.45 mm respectively), Salmonella enterica (24.98 ± 0.18 mm, 22.17 ± 0.15 mm respectively), and Escherichia coli (23.50 ± 0.50 mm, 27.00 ± 0.20 mm respectively) and better inhibition of Aspergillus flavus growth (93.28% and 81.77% respectively) compared with other extracts.
Ornella N Ferreyra, Melina E Lionello, Romina Ingrassia, María Eugenia Hidalgo, Cristina Dos Santos Ferreira, María Del Pilar Buera, Patricia Risso
Background: The antioxidant capacity of anthocyanins (AC) rapidly degrades during storage, highlighting the need for their stabilization. The conformational properties and high proline content of sodium caseinate (NaCAS), combined with the formation of NaCAS microgels in the presence of tara gum (TG) and acid gelation, suggest its potential as an effective stabilizing or encapsulating agent of AC.
Results: Spectrofluorimetric results suggest the formation of a complex between NaCAS and AC. Fourier transform infrared spectroscopy demonstrated that the presence of TG and blackberry extract (BEX) modifies the NaCAS spectra in the analyzed range. These results validated the presence of hydrogen bonding and hydrophobic interactions between NaCAS and AC. The impact of the AC-NaCAS complex on the stability of the antioxidant capacity was assessed. After 43 days of storage, the lyophilized complex with an optimal BEX concentration retained 70% of its iron-reducing power. Additionally, the results indicate that, at the tested concentrations of BEX, the radical scavenging capacity of NaCAS is minimally affected.
Keli Zhong, Shuang Liu, Yangyang Li, Lijun Tang, Xiaofei Sun, Xuepeng Li, Jianrong Li
Background: Multifunctional fluorescent probes have attracted much attention due to their wide range of applications and high utilization. In this study, a multifunctional fluorescent probe (E)-3-(4-(7-(4-(diphenylamino)phenyl)benzo[c] [1,2,5]thiadiazol-4-yl)phenyl)acrylic acid (TBAC) based on triphenylamine was designed and synthesized.
Results: The TBAC probe provided excellent aggregation-induced emission (AIE) performance and could be used as a fluorescent ink for printing. It was also prepared successfully for application as a fingerprint powder, facilitating the visual detection of invisible fingerprints on surfaces such as glass, plastic, tinfoil, metal, aluminum, and resin. The probe exhibited a clear fluorescence response to 12 volatile amines via an AIE-based 'on-off' mechanism in an EtOH/H2O (4/6, v/v) solution. The TBAC/bromocresol green (BCG) indicator label also enabled non-destructive and rapid assessment of salmon freshness through dual-channel colorimetric and fluorescence responses.
Junaid Nawaz Chauhdary, Hong Li, Xuwei Pan, Muhammad Zaman, Shakeel Ahmad Anjum, Fan Yang, Nadeem Akbar, Urunbayev Azamat
Background: Wheat-maize cropping systems in semi-arid regions are expected to be affected by climate change in the future, which is alarming for global food security, environmental sustainability and socioeconomic development. Therefore, management practices like optimized plant geometry and fertilization need to be explored to counter these expected threats. To do this, the APSIM model was calibrated using 5-year data (from 2017/2018 to 2022) regarding yield, biomass, plant height, emergence, anthesis and crop maturity of wheat and maize from farmer fields.
Results: The performance of a model run was assessed using root mean square error, normalized root mean square error, coefficient of residual mass, coefficient of determination (R2) and Nash-Sutcliffe efficiency, whose average was 1.59, 0.13, 0.001, 0.84 and 0.78, respectively, for calibration while 2.75, 0.20, -0.009, 0.80 and 0.75, respectively, for validation. Regarding crop phenology, it was modelled that the emergence, anthesis and maturity were earlier by 7-9 days, 8-10 days and 2-6 days, respectively, for wheat; 6-10 days, 13-20 days and 16-24 days, respectively, for spring maize; 3-5 days, 5-11 days and 8-19 days, respectively, for autumn maize under different climate change scenarios in near to far future. Simulations revealed the average reduction in the yield of wheat, spring maize and autumn maize by 11.5%, 11.8% and 11.0%, respectively, in near future (2025-2065) while 17.5%, 20.5% and 17.0%, respectively, in far future (2066-2100). Further, simulations discovered the potential of higher levels of fertilization (nitrogen = 60-100 kg ha-1 and phosphorus = 40-75 kg ha-1 for wheat while nitrogen = 75-120 kg ha-1 and phosphorus = 40-80 kg ha-1 for maize) and plant density (100 to 150 plants m-2 for wheat and 8 to 13 plants m-2 for maize) to enhance the yield of wheat, spring maize and autumn maize by 31-36%, 22-38% and 26-43%, respectively, in near future while 33-38%, 21-55% and 19-31%, respectively, in far future.
Background: Polyether ether ketone (PEEK) was modified by a sulfuric and nitric acid mixed system to improve the solubility of the material and the gas selective permeability of the film. SN1 and SN5, synthesized from mixed acid systems (with ratios of nitric acid and sulfuric acid of 1:1 and 1:5, respectively) were chosen because they had comparable nitro groups but differing sulfonyl groups. To investigate the impact of the type and content of sulfonated and nitrated polyether ether ketone (SNPEEK) on the structure and physicochemical properties of the films, SN1/polyvinyl chloride (PVC) and SN5/polyvinyl chloride films were made by adding varying amounts of SN1 and SN5 (0.5%, 1.0%, 1.5%, 2.0% and 2.5 wt%), respectively.
Results: SNPEEK (with ratios of nitric acid and sulfuric acid of 1:1-9) with high nitric acid group concentration outperformed nitrated polyether ether ketone (NPEEK) (with ratios of nitric acid and sulfuric acid of 3-9:1) with a low nitric acid concentration in terms of solubility at room temperature and expanded the application range. The inclusion of SNPEEK resulted in more micropores on the membrane microstructure, and higher contents of -SO3H and -NO2 groups enhanced the polarity, which improved permeability and selectivity for CO2 and O2 and the moisture permeability of the membranes. During grape storage (4 ± 1 °C), 1.0% SN1/PVC and 1.0% SN5/PVC membranes reached equilibrium gas concentration on day 4 (4.6-5.4% CO2, 17.6-18.1% O2; 3.5-4.1% CO2 and 18.6-19.1% O2), grapes showed lower electrolyte leakage as well as higher hardness, total soluble solid content and vitamin C content.
Fabrizio Nardo, Andrea Piras, Simonetta Bullitta, Luigi Ledda, Francesca Serralutzu
Background: Biowaste accounts for about 40% of total waste. Food-industry waste is one major biowaste stream. The available technological approaches to biowaste treatment are expensive, not circular, unsustainable, and they require pre-treatments such as dehydration, extraction of inhibitors, pH correction, or the addition of other organic matrices. The NP-bioTech process uses a biocatalyst adsorbed onto an inert material enabling accelerated fermentation of critical biomass without pre-treatments, transforming it into biostabilized and pasteurized material, and converting waste into new usable products rapidly. Biocatalysts consist of naturally fortified selections of microbial colonies, enzymes, and fungi that are resistant to the action of d-limonene and other fermentation inhibitors.
Results: The NP-bioTech process was able to activate vigorous fermentation of citrus waste without any of the pre-treatments required by other available biowaste-treatment technologies. The horticultural use of the biostabilized output of such process for greenhouse crops was verified. The addition of such output to the growth media was beneficial for plants and did not show negative effects on quality and yield of tomatoes (Lycopersicon esculentum L.). The concentration of Ca, K, Zn, Fe, and polyphenol increased; the average number of berries per plant was improved; the concentration of Pb and Cd contaminants decreased.
Background: The health benefits of organic food provide one reason for consuming it. Various studies have shown that regular organic food consumers (REG eco-con) follow a healthier diet. However, this topic has not been explored in Poland. This study aimed to evaluate the diet quality of mothers with children under 6 years old, residing in three provinces of Poland, who consumed organic food at varying frequencies. Data were collected using validated questionnaires.
Results: Among the mothers surveyed (N = 667), 84% achieved an average Diet Quality Index (DQI) score, indicating a neutral impact of their diet on health. Meanwhile, 15% of respondents exhibited diets with a high intensity of health-promoting characteristics. Women with a higher frequency of organic food consumption displayed more health-promoting dietary behavior. Regular organic food consumers demonstrated significantly higher DQI and Pro-Healthy Diet Index (pHDI) scores than those with lower organic food consumption frequency. The REG eco-con mothers also reported significantly more frequent consumption of vegetables, fruit, whole-grain bread and cereals, fermented dairy products, legumes, and fish. Respondents who rated their state of health as better than that of their peers were characterized by more frequent consumption of organic food.