Natural Deep Eutectic Solvents for Analytical Sample Preparation of Polyphenol-Rich Plant Extracts: Chemical Characterization and Bioanalytical Validation

Objective To investigate the adverse effect of exposure to acetylsalicylic acid (ASA), diazinon (DIA) and their combination on oxidant/antioxidant status in rat erythrocytes and the ameliorating role of selenium (Se). Methods Rats were oral administered ASA at the maximum administration dose (1 350 mg/personal/d=2.5 mg/kg body weight/d), DIA at a dose of 20 mg/kg body weight/d and Se at a dose of 200 µg/kg body weight/d and their combinations for 28 consecutive d. Results Administration of DIA, ASA and ASA+DIA lead to a significant increment ( P ≤0.05) in lipid peroxidation as evidenced by the increase in erythrocytes MDA levels by 61.8%, 20.79% and 105.62%, respectively. Co-administration of Se to treated rats modulated the augmentation of MDA levels. Administration of DIA, ASA and ASA+DIA lead to significant decreases ( P ≤0.05) in the activities of catalase, superoxide dismutase and glutathione peroxidase enzymes when compared to the control group. The most influence and decreases in the activities of the aforementioned enzymes were observed in the treatments of ASA+DIA by 30.53%, 43.42% and 48.31%, respectively. However, co-administration of Se mitigated the significant decreases of superoxide dismutase, catalase and glutathione peroxidase activities to by 14.47%, 15, 36% and 12.29%. Conclusions It can be concluded that DIA and ASA induced oxidative stress and lipid peroxidation in rat erythrocytes. The results reveal the pronounced ameliorating effect of Se in DIA and ASA intoxicated rats. It is supposed that antioxidant supplementation may be beneficial for the people using ASA for longer periods and exposure to pesticides.

Natural deep eutectic solvents (NADES) have gained significant attention as green solvents due to their unique properties, such as high solubility, low volatility, low toxicity, and tunability. Liquid phase microextraction (LPME) is a sample preparation technique that plays a crucial role in analytical chemistry, and the use of NADES as extraction solvents in LPME offers numerous benefits compared to traditional solvents. NADES can effectively extract bioactive compounds from natural sources without damaging their structure and activity. They can also serve as solvents and catalysts in organic reactions, enhancing the bioavailability of natural compounds. In addition, NADES can be utilized as mobile or stationary phases in chromatographic techniques for separating and analyzing natural compounds. The review highlights the efficiency of NADES in terms of extraction ability, analyte stabilization capacity, and detection compatibility. Moreover, the availability of their components, ease of preparation, low toxicity, cost-effectiveness, and biodegradability make NADES attractive for researchers in the field of analytical chemistry. The applications of NADES in LPME contribute to the principles of green analytical chemistry and green sample preparation by providing a sustainable and environmentally friendly approach to sample preparation. A comprehensive overview of the applications of NADES in liquid phase microextraction is provided, emphasizing their potential for advancing green practices in analytical chemistry.

Flavonoids modulate liposomal membrane structure, regulate mitochondrial membrane permeability and prevent erythrocyte oxidative damage

In recent years, natural deep eutectic solvents (NADES) have been widely investigated for the extraction of food and medicinal plants as well as seaweeds. However, the ability of NADES for trace elements co-extraction from natural sources is not well investigated. The aim of this study was to investigate the ability of common NADES for trace elements co-extraction from Fucus vesiculosus. All of the tested NADES did not recover As and Co (concentration <LOQ). Moreover, all of the tested NADES provided a low recovery (<9%) of Ba, Ca, Fe, Mg, Mn, Sr, and Zn. The method of extraction had not shown a statistically significant effect on the co-extraction of all elements (excluding Ba and Ca). In contrast, the water content in NADES was significantly affected on the recovery of Ba, Ca, Mg, Mn, Sr, and Zn. The recovery of Al and Cr was relatively high and considerably varied (from 1.5 to 59.9%). NADES comprising lactic acid:glucose:H2O (5:3:1) provided the lowest contents of all elements, and the highest extracted amounts were obtained employing water contents of 60–80%. The calculated daily intake of all the elements contained in NADES extracts were less than the daily dose risk estimators. The hazard quotients, hazard indexes, and carcinogenic risk calculated for all trace elements and their combination were considerably less than 1. This evidences no health risk, and carcinogenic risk after topical application of all studied NADES. For the first time, the results of the current study demonstrated that NADES extracts of F. vesiculosus contain a lower amount of trace metals and are safer than the extracts obtained with water and 70% acetone. This indicates a significant advantage for NADES compared with the other solvents.

The aim of this study was to investigate the influences of different stress models on the antioxidant status and lipid peroxidation (LPO) in erythrocytes of rats. Swiss-Albino female rats (3 months old) were used in this study. Rats were randomly divided into the following four groups; control group (C), cold stress group (CS), immobilization stress group (IS) and cold+immobilization stress group (CS+IS). Control group was kept in an animal laboratory (22 - 2°C). Rats in CS group were placed in cold room (5°C) for 15 min/day for 15 days. Rats in IS group were immobilized for 180 min/day for 15 days. Rats in CS+IS group were exposed to both cold and immobilization stresses for 15 days. At the end of experimental periods, the activities of glucose-6-phosphate dehydrogenase (G-6-PD), Cu,Zn-superoxide dismutase (Cu,Zn-SOD), catalase (CAT) and glutathione peroxidase (GSH-Px), and concentration of reduced glutathione (GSH) were measured. LPO was determined by measuring the contents of thiobarbituric acid-reactive substances (TBARS). Cu,Zn-SOD activity and TBARS concentration were increased after cold and immobilization stresses, but CAT and GSH-Px activities and GSH levels were decreased. Immobilization stress decreased the activity of G-6-PD. The activities of G-6-PD, CAT and GSH-Px, and the level of GSH were lower in CS+IS group than in the control group. Cu,Zn-SOD activity and TBARS levels were increased in CS+IS group when compared with the control group. From these findings, three stress models are thought to cause oxidative stress.

Changes in glucose-6-phosphate dehydrogenase, copper, zinc-superoxide dismutase and catalase activities, glutathione and its metabolizing enzymes, and lipid peroxidation in rat erythrocytes with age

Subacute effects of 2,4-dichlorophenoxyacetic herbicide on antioxidant defense system and lipid peroxidation in rat erythrocytes

Graphical abstract Abstract Sarcopenia is a very disabling age-related disease which affects the mass and strength of skeletal muscles. This syndrome has no efficient treatment and is associated with important oxidative stress which could play important role in skeletal muscle degeneration. In this context, the cytoprotective activity and the antioxidant properties of a polyphenol-rich plant extract (PRPE) were evaluated in undifferentiated C2C12 murine skeletal muscle cells (myoblasts). PRPE is a potent antioxidant mixture as shown by its reactive oxygen species (ROS) scavenging properties by using the Kit Radicaux Libres method and the dihydroethidium (DHE) scavenging assay. In addition, PRPE has significant protecting properties in C2C12 cells toward oxidative stress triggered by 2, 2′-azobis (2-amidinopropane) dihydrochloride (AAPH) which is an ROS generator, as measured by different complementary approaches. PRPE counteracts several AAPH-induced cytotoxic effects. PRPE prevents morphological changes evaluated by phase contrast microscopy and decreases the number of dying cells determined by counting in the presence of trypan blue and the intracellular ROS overproduction evaluated by flow cytometry after staining with DHE. In addition, PRPE tends to normalize the expression of genes (peroxiredoxin 1 (Pdrx1), nuclear factor erythroid 2-related factor 2 (Nrf2), and peroxisome proliferator-activator receptor gamma coactivator 1-alpha (Pgc1α)) involved in the oxidant stress defense under ROS exposure. Altogether; our data show that PRPE has potent antioxidant properties and protects C2C12 skeletal muscle cells toward AAPH-induced oxidative stress. These cytoprotective properties of PRPE in skeletal muscle cells submitted to a pro-oxidant environment deserve further investigation in the context of sarcopenia.

Date seeds, often considered agro-industrial waste, are a rich source of bioactive compounds such as polysaccharides, mono-oligosaccharides, phytosterols, carotenoids, and polyphenols, all possessing significant functional properties. This review explores the extraction of these compounds using Natural Deep Eutectic Solvents (NADES), a green, biodegradable, and cost-effective alternative to conventional solvents. The extraction efficiency is enhanced when NADES is combined with advanced techniques such as ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), and heating-stirring-assisted extraction (HSAE). Optimal NADES formulations include choline chloride and lactic acid with UAE for polyphenols catechins, choline chloride and ethylene glycol with UAE for polysaccharides, menthol and eucalyptol with HSAE for phytosterols. Additionally, specific NADES combinations facilitate the extraction of carotenoids using Octanoic acid and L-proline with HSAE under controlled conditions. Extracts obtained using choline chloride and ethylene glycol with MAE exhibit promising applications in functional food systems, including food preservation. Notably, polyphenol-rich extracts have been shown to extend the shelf life of Oreochromis niloticus fillets stored at 4°C for up to 10 days. These findings underscore the potential of NADES-extracted date seed components as sustainable food ingredients, aligning with green chemistry principles and contemporary food technology trends.

Assessing the impact of polyphenol-rich plant extracts on ice cream meltdown behavior and structural elements using multivariate analysis

The possibility of using methods for determining the oxidative status of an organism (enzymatic and non-enzymatic links of the cellular antioxidant system) to assess the antioxidant properties of peptides of the pituitary gland of the reindeer (Rangifer tarandus) were investigated in an experimental study conducted with a combined effect of factors of different nature on rats: a physical factor — prolonged light desynchronosis (different light modes) and a chemical factor - acute severe poisoning with depriving toxicant (sodium thiopental, LD50). The pharmacological correction of the oxidative status of cells in the animals of the experimental subgroups was carried out with the peptide product of the pituitary gland, intranasally injecting the surviving rats with the bioproduct at a dose of 100 µg/kg, once in the first half of the objective day for 14 days after poisoning with sodium thiopental. The surviving animals of the control groups were similarly injected with saline. The effectiveness of the correction of the disruptions of the cellular oxidative status with the peptide product of the pituitary gland was tested 30 days after the onset of the combined effect of stress factors on rats. It was found that the use of this bioactive peptide product in experimental animals exposed to different light modes and a chemical factor contributed to a decrease in the initially increased indicators of lipid peroxidation in rat erythrocytes and an increase in the initially reduced indicators of the enzymatic link of antioxidant protection. The activity of superoxide dismutase, glutathione peroxidase, glutathione transferase, as well as glucose-6-phosphate dehydrogenase increased after pharmacological correction. The concentration of reduced glutathione also increased in erythrocytes. The maximum changes were observed in the experimental subgroup of rats exposed to the combined effects of constant illumination and depriming toxicant. It was also found that the revealed positive changes in the indicators of the enzymatic link of antioxidant protection in animals of the experimental subgroups are associated with the maintenance of a sufficient concentration of reduced glutathione in red blood cells, which contributed to the maintenance of the cellular redox balance, when the conditions of the external lighting regime are violated.

BACKGROUND: Low-dose exposure of mercury compounds to the human body for a long time leads to the accumulation of a toxicant in tissues, causing damage to health. Mercury can be delivered to a developing fetus through the placenta or to an infant through breast milk. Erythrocytes are the preferred cell for mercury accumulation, reaching a concentration 20 times higher than the concentration in blood plasma. Erythrocytes have powerful antioxidant protection. The antioxidant protection system of the cell plays an important role in maintaining of homeostasis in the cell. Despite of the apparent vastness of researches of the antioxidant system and lipid peroxidation, changes after subacute poisoning with heavy metals have not been sufficiently studied. AIM: Study changes in biochemical parameters in Wistar rats erythrocytes with subacute poisoning with mercury acetate. MATERIALS AND METHODS: 30 days and 44 days after the administration of mercury acetate at a dose of 4 mg/kg in the hemolysate of red blood cells of rats, the indicators of the antioxidant system and lipid peroxidation were determined. RESULTS: The administration of mercury acetate for 30 days significantly increased the activity of SOD, GP and reduced the activity of GT. An increase of DC concentration was noted. 14 days after the end of the injection of the toxicant, the imbalance of the AOS enzyme link persists. An increase of DC and MDA concentrations was revealed. CONCLUSIONS: The data obtained demonstrate a violation of the antioxidant balance in erythrocytes after a 30-day administration of mercury acetate. 14 days after the end of the injection of the toxicant, changes in the enzyme link of AOS persist. Intensification of the processes of lipoperoxidation of erythrocyte membranes has been established. In the delayed period after poisoning, there is a tendency to disturbance the balance of AOS of erythrocytes, the intensity of LPO processes increases.

Age-related changes of antioxidant enzyme activities, glutathione status and lipid peroxidation in rat erythrocytes after heat stress

A polyphenol rich plant extract, CYSTUS052, exerts anti influenza virus activity in cell culture without toxic side effects or the tendency to induce viral resistance

Green extraction of bioactive compounds from apple pomace by ultrasound assisted natural deep eutectic solvent extraction: Optimisation, comparison and bioactivity