Evaluation of antioxidant activities of various solvent extracts of Carissa opaca fruits

Evaluation of Paracentrotus lividus spines extract antioxidant, antidiabetic, anti-inflammatory, antimicrobial, and mechanistic anticancer: Insights into its composition using UPLC-ESI-MS-based metabolomic profiling

Sea urchins are widely distributed in waters worldwide. The present study carried out the in vitro metabolomic bioactivity profiling using UPLCMS/MS of Paracentrotus lividus spines extract. Investigations were also conducted on molecular anticancer, anti-inflammatory, antidiabetic, antioxidant, and antibacterial properties. A comprehensive untargeted metabolic profiling of P. lividus spines extract resulted in the classification of more than 13 metabolites. Their metabolomic quantitative evaluations were assumed by measuring total phenolic, flavonoids, dihydroflavonol, sugar, and protein contents. The P. lividus spines extract exhibited powerful antioxidant capacity using DPPH*, ABTS+, reducing power, and phosphomolybdate assays. Moreover, P. lividus spines extract highly elucidated antidiabetic and anti-inflammatory activity by inhibiting α-amylase enzyme and protein denaturation. Further, the spines of the P. lividus exhibited significant antibacterial effects. Besides, extract from P. lividus spines showed a strong cytotoxic impact against a variety of HepG-2 and MCF-7 cancer cell lines. It was discovered that the P. lividus spines extract triggered cell cycle arrest in the sub-G0/G1 phase and suppressed the growth of cancer cells via suppressing mRNA of Akt/MAPK/Bcl-2/c-myc and protein expression of β-Catenin/ki-67. Conclusively, the extract derived from the spines of the sea urchin species P. lividus demonstrates significant potential for utilization in various pharmaceutical industries.

Exploring the potential of Carissa spinarum fruit in RTS beverage: a comprehensive study on preparation and stability

The potential of Carissa spinarum (Cs), an underutilized plant rich in medicinal and nutritional value, for producing ready-to-serve (RTS) beverages was explored. The research investigated commercial processing techniques for extracting Cs fruit juice and the impact of stabilizers such as pectin (low and high), xanthan gum, and sodium alginate on beverage quality. Sodium alginate, chosen for its sedimentation rate and sensory acceptability, was further optimized in RTS formulations. These formulations, with 10% Cs fruit juice at different °Brix concentrations (10 (T1), 12 (T2), and 14 (T3)), were refrigerated (4 ± 0.5 °C) for 60 days, for shelf life studies, alongside physicochemical (pH, vitamin C, titratable acidity, total sugars, anthocyanin, total phenolics, flavonoids, DPPH activity) and sensory assessments. The treatments showed significant improvements in physicochemical stability compared to controls. HPLC analysis confirmed the retention of bioactive compounds Cyanidin-3-glucoside, Chlorogenic acid, Syringic acid, and Resveratrol in RTS beverages. Sensory evaluation indicated a higher level of acceptance, with overall acceptability ranked as follows on a 9-point hedonic scale: T2 (7.01) > T3 (6.92) > T1 (6.58) > Control (5.46). The study underscores Cs's bioactive potential and promising role in functional beverage development, appealing to health-conscious consumers due to retained nutrition and nutraceuticals during storage, offering convenient and flavorful options.

Supplementary Information

The online version contains supplementary material available at 10.1007/s13197-024-06017-w.

Determination of the Phytochemical Components, Nutritional Content, Biological Activities, and Cytotoxicity of Ripening Karanda (Carissa carandas) Fruit Extract for Functional Food Development

Ripening karanda fruits are a natural source of phytochemicals, which exhibit various biological properties. The present study aimed to determine the types of phytochemicals, biological properties, and cytotoxic and hemolytic effects of ripening karanda fruits. Two mechanical tools were used to collect the phytochemicals under low temperatures during the extraction process. The extracts were investigated for antioxidants using a 2,2-diphenyl-1-picrylhydrazyl assay. The total phenolic contents were studied using the Folin-Ciocalteu method. The phytochemicals of the total extract were analyzed by gas column chromatography-mass spectrometry. The saccharide types, including the total sugar content, were determined using thin-layer chromatography and the Lane-Eynon method. The total ascorbic acid was analyzed in accordance with the AOAC 967.21 method. The cytotoxic and hemolytic effects of phytochemicals were investigated using human peripheral blood mononuclear cells (hPBMCs) and human red blood cells (hRBCs). The results showed that the appropriation for repeated ultrasonic extraction is four times. The fresh ripening karanda fruit (Fresh-RKF) and freeze-dried powder of ripening karanda fruit extracts exhibited antioxidant activity in vitro and exerted a noncytotoxic effect on hPBMCs at a concentration of ≤2.5 mg/mL and a hemolytic effect on hRBCs at a concentration of >5.0 mg/mL. The Fresh-RKF extract comprised 0.27% of total sugar and 0.01% of ascorbic acid. These data could support the development of supplemental foods using ripening karanda fruits as the primary ingredient.

Investigation of anticancer potential of a novel bioactive molecule from Trichosporon asahii VITSTB1 in breast cancer cell lines: an in vitro study

The current study investigates the anticancer activity of protein derived from yeast against breast cancer. Yeast-derived proteins illustrate potential as an anticancer agent through mechanisms, such as immune system stimulation via beta-glucans, cytotoxic effects, and modulation of gut microbiota by probiotic strains. The antioxidant activity of yeast-derived proteins can aid in anticancer activity by neutralizing free radicals, thereby reducing oxidative stress and preventing damage to cellular DNA. Employing a comprehensive methodology encompassing yeast isolation, antioxidant screening, molecular characterization, bioactive protein purification, and MTT assay, the research provides crucial insights into the anticancer attributes of the protein extracted from the yeast. The findings reveal significant antioxidant activity that reduces reactive oxygen species (ROS) levels, which are implicated in cancer development. The MTT assay on MCF-7 breast cancer cell lines, characterized by estrogen receptor and progesterone receptor positivity and HER-2 negativity, determined an IC50 value of 54.89 µg/ml, indicating a dose-dependent decrease in cytotoxic effects. These results suggest that the protein derived from Trichosporon asahii VITSTB1 exhibits promising anti-breast cancer properties. Further research is necessary to elucidate the underlying mechanisms, assess efficacy and safety profiles, explore synergies with existing therapies, and conduct animal model studies. Advancing this line of inquiry will significantly contribute to biomedical research and industrial innovation.

Phytochemical on-line screening and in silico study of Helianthemum confertum: antioxidant activity, DFT, MD simulation, ADME/T analysis, and xanthine oxidase binding

Seven components from the methanol extract of the aerial part of the endemic species Helianthemum confertum were isolated and identified for the first time. Investigating this species and its separated components chemical make-up and radical scavenging capacity, was the main goal. Using an online HPLC-ABTS˙+ test, ORAC, and TEAC assays, the free radical scavenging capacity of the ethyl acetate extract was assessed. The fractionation of these extracts by CC, TLC, and reverse-phase HPLC was guided by the collected data, which was corroborated by TEAC and ORAC assays. Molecular docking studies, DFT at the B3LYP level, and an examination of the ADME/T predictions of all compounds helped to further clarify the phytochemicals' antioxidant potential. Isolation and identification of all components were confirmed through spectroscopy, which revealed a mixture (50-50%) of para-hydroxybenzoic acid 1 and methyl gallate 2, protocatechuic acid 3, astragalin 4, trans-tiliroside 5, cis-tiliroside 6, contaminated by trans-tiliroside and 3-oxo-α-ionol-β-d-glucopyranoside 7, as well as two new compounds for the genus Helianthemum (2 and 7). With a focus on compounds 1, 2, 3, and 4, the results clearly showed that the extract and the compounds tested from this species had a high antioxidant capacity. Within the xanthine oxidase enzyme's pocket, all of the components tested showed strong and stable binding. In light of these findings, the xanthine oxidase/methyl gallate 2 complex was simulated using the Desmond module of the Schrodinger suite molecular dynamics (MD) for 100 ns. Substantially stable receptor-ligand complexes were observed following 1 ns of MD simulation.

Evaluating the Antioxidant and Antidiabetic Properties of Medicago sativa and Solidago virgaurea Polyphenolic-Rich Extracts

The present study evaluated the antioxidant and antidiabetic properties of Medicago sativa and Solidago virgaurea extracts enriched in polyphenolic compounds. The extracts were obtained by accelerated solvent extraction (ASE) and laser irradiation. Then, microfiltration was used for purification, followed by nanofiltration used to concentrate the two extracts. The obtained extracts were analyzed to determine their antioxidant activity using DPPH radical scavenging and reducing power methods. The antidiabetic properties have been investigated in vitro on a murine insulinoma cell line (β-TC-6) by the inhibition of α-amylase and α-glucosidase. M. sativa obtained by laser irradiation and concentrated by nanofiltration showed the highest DPPH• scavenging (EC50 = 105.2 ± 1.1 µg/mL) and reducing power activities (EC50 = 40.98 ± 0.2 µg/mL). M. sativa extracts had higher inhibition on α-amylase (IC50 = 23.9 ± 1.2 µg/mL for concentrated extract obtained after ASE, and 26.8 ± 1.1), while S. virgaurea had the highest α-glucosidase inhibition (9.3 ± 0.9 µg/mL for concentrated extract obtained after ASE, and 8.6 ± 0.7 µg/mL for concentrated extract obtained after laser extraction). The obtained results after evaluating in vitro the antidiabetic activity showed that the treatment with M. sativa and S. virgaurea polyphenolic-rich extracts stimulated the insulin secretion of β-TC-6 cells, both under normal conditions and under hyperglycemic conditions as well. This paper argues that M. sativa and S. virgaurea polyphenolic-rich extracts could be excellent natural sources with promising antidiabetic potential.

Enzymatic Acylation of Black Rice Anthocyanins and Evaluation of Antioxidant Capacity and Stability of Their Derivatives

In this study, the structure of the anthocyanin fractions isolated from black rice (Oryza sativa L.) was modified by the enzyme catalysis method using caffeic acid as an acyl donor. At the same time, the effects of the acylation on the lipophilicity, antioxidant activity, and stability of black rice anthocyanins were comprehensively evaluated. The structural analyses of acylated derivatives based on ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, ultra-high-performance liquid chromatography-high-resolution mass spectrometry, and thermogravimetric analysis revealed that caffeic acid was efficiently grafted onto the anthocyanins of black rice through an acylated reaction, while the acylation binding site was on glucoside. When the mass ratios of anthocyanins to caffeic acid were 1:1, the A319/AVis-max value of acylated anthocyanins reached 6.37. Meanwhile, the lipophilicity of acylated derivatives was enhanced. The antioxidant capacity (DPPH and FRAP) and stability (thermal, pH, and light stability) were significantly increased. Overall, the study results provide deeper insights into controlling anthocyanin homeostasis in food processing, broadening the application of colored grain products.

GC-MS-based profiling and ameliorative potential of Carissa opaca Stapf ex Haines fruit against cardiac and testicular toxicity: An In vivo study

Fruit of Carissa opaca Stapf ex Haines (C. opaca) is a feed additive and is commonly used against cardiac dysfunction, fever, asthma, diarrhea, gastrointestinal ailments, and skin diseases. In this study, we aimed to evaluate the metabolic profile and antioxidant potential of C. opaca fruit against carbon tetrachloride (CCl4)-induced cardiotoxicity and testicular toxicity in rats. Gas Chromatoghraphy-Mass Spectrometry (GC-MS) analysis of C. opaca fruit for the identification of potential metabolic profile, followed by methanolic extract of C. opaca and its derived fractions including n-hexane, ethyl acetate, chloroform, butanol, and aqueous were used to assess the antioxidant potential of fruits. Ten groups of rats received different treatments and got evaluated for cardiac and testicular antioxidant enzymes, histological architecture, and serum hormonal levels. GC-MS analysis of methanolic extract of C. opaca fruit showed the presence of some bioactive metabolites like cyclodecane, diethyl 2,6-pyridine dicarboxylate, tetrahydro-geraniol, S-[2-[N, N-Dimethylamino]ethyl]morpoline, 2,3-Methylenedioxyphenol, alpha-d-Glucopyranoside, 5,10-Diethoxy-2,3,7,8-tetrahydro-1H, 6H-dipyrrolo [1,2-a; 1',2'-d] pyrazine and 1,3-Benzothiazol-2(3H)-one,3-(3,3-dimethyl-1-oxobutyl) that corresponds the medicinal properties of C. opaca fruit. Prepared fractions of C. opaca fruits mitigated the toxicity induced by CCl4 in the heart and testicular tissues of rats. Oxidative stress was caused by the inhibition of activities of glutathione and other antioxidant enzymes of the body, while on the other hand elevating the levels of nitrite and hydrogen peroxide. Treatment with C. opaca fruit extract normalized the levels of enzymes, reproductive hormones, and free radicals thus restoring the histopathological and enzymatic biomarkers towards the normal group. The study supports the indigenous use of fruits as an alternative medicine against cardiac dysfunction by providing scientific evidence of protection against CCl4-induced injuries, and it also concludes the antioxidant defensive role in testicular tissues.

Co-Encapsulation of Curcumin and α-Tocopherol in Bicosome Systems: Physicochemical Properties and Biological Activity

A novel co-encapsulation system called bicosomes (bicelles within liposomes) has been developed to overcome the limitations associated with the topical application of curcumin (cur) and α-tocopherol (α-toc). The physicochemical properties and biological activity in vitro of bicosome systems were evaluated. Bicelles were prepared with DPPC, DHPC, cur, and α-toc (cur/α-toc-bicelles). Liposomal vesicles loading cur/α-toc-bicelles were prepared with Lipoid P-100 and cholesterol-forming cur/α-toc-bicosomes. Three cur/α-toc-bicosomes were evaluated using different total lipid percentages (12, 16, and 20% w/v). The results indicated that formulations manage to solubilize cur and α-toc in homogeneous bicelles < 20 nm, while the bicosomes reaches 303-420 nm depending on the total lipid percentage in the systems. Bicosomes demonstrated high-encapsulation efficiency (EE) for cur (56-77%) and α-toc (51-65%). The loading capacity (LC) for both antioxidant compounds was 52-67%. In addition, cur/α-toc-bicosomes decreased the lipid oxidation by 52% and increased the antioxidant activity by 60% compared to unloaded bicosomes. The cell viability of these cur/α-toc-bicosomes was >85% in fibroblasts (3T3L1/CL-173™) and ≥65% in keratinocytes (Ha-CaT) and proved to be hematologically compatible. The cur/α-toc-bicelles and cur/α-toc-bicosomes inhibited the growth of C. albicans in a range between 33 and 76%. Our results propose bicosome systems as a novel carrier able to co-encapsulate, solubilize, protect, and improve the delivery performance of antioxidant molecules. The relevance of these findings is based on the synergistic antioxidant effect of its components, its biocompatibility, and its efficacy for dermal tissue treatment damaged by oxidative stress or by the presence of C. albicans. However, further studies are needed to assess the efficacy and safety of cur/α-toc bicosomes in vitro and in vivo.

Antioxidant and antiproliferative activity of Basella alba against colorectal cancer

Basella alba, a green leafy vegetable with remarkable nutraceutical potential is widely used since ancient times to maintain a healthy colon. This plant has been investigated for its medicinal potential due to the increase in young adult cases of colorectal cancer each year. This study was accomplished to investigate Basella alba methanolic extract (BaME) antioxidant and anticancer properties. BaME consisted of a substantial amount of both phenolic and flavonoid compounds which exhibited significant antioxidant reactivity. Both colon cancer cell lines experienced a cell cycle arrest at the G0/G1 phase after receiving treatment with BaME, which inhibited pRb and cyclin D1 and raised p21 expression levels. This was associated with the survival pathway molecule inhibition and downregulation of E2F-1. The results of the current investigation confirm that BaME inhibits CRC cell survival and expansion. To conclude, the bioactive principles in the extract act as potential antioxidants and antiproliferative agents against colorectal cancer.

Glutathione primed seed improved lead-stress tolerance in Brassica rapa L. through modulation of physio-biochemical attributes and nutrient uptake

Heavy metal toxicity is a major environmental issue that affects all life forms, including plants. The accumulation of lead (Pb) in agricultural soils is a significant contributor to reduced crop yields, and it poses serious health risks to people who consume lead-contaminated agricultural products. The current study was undertaken to investigate the beneficial effects of glutathione (GSH) on the amelioration of stress induced by Pb (300 mg kg-1 Pb) in Brassica rapa L. (turnip). For this purpose, B. rapa seeds primed with 25, 50, and 75 µmol L-1. The root and shoot length, seedling biomass, and leaf area, was reduced under Pb stress. Lead toxicity inhibited the net photosynthetic rate (31.36%), total chlorophyll content (74.54%) of B. rapa plants in comparison to control. Lead-stressed plants additionally exhibited changes in proline levels, as well as lower levels of total soluble protein and phenolic content. Nevertheless, seed priming with GSH resulted in higher concentrations of the nutritional content (Mg+2, Zn+2, Na+, K+) that increased Pb stress tolerance. The GSH2 treated seed enhanced the photosynthetic rate (46.34%), stomatal conductance (80.55%), and transpiration rate (53.125%) over Pb stress. Furthermore, GSH2 enhanced total soluble proteins (37.75%), phenolic content (58.38%), and DPPH (1.5fold) of turnip plant over control seedlings. According to our research, GSH2 primed B. rapa seed demonstrated a reduction in Pb toxicity, which could be used to help seedling establishment in soils contaminated with Pb.

Antioxidant Baccharis trimera Leaf Extract Suppresses Lipid Accumulation in C. elegans Dependent on Transcription Factor NHR-49

Obesity is a global public health problem that is associated with oxidative stress. One of the strategies for the treatment of obesity is the use of drugs; however, these are expensive and have numerous side effects. Therefore, the search for new alternatives is necessary. Baccharis trimera is used in Brazilian folk medicine for the treatment of obesity. Here, B. trimera leaf extract (BT) showed antioxidant activity in seven in vitro tests, and it was not toxic to 3T3 murine fibroblasts or Caenorhabditis elegans. Furthermore, BT reduces the intracellular amount of reactive oxygen species and increases C. elegans survival. Moreover, these effects were not dependent on transcription factors. The inhibition of fat accumulation by BT in the C. elegans model was also investigated. BT reduced lipid accumulation in animals fed diets without or with high amount of glucose. Furthermore, it was observed using RNA interference (iRNA) that BT depends on the transcription factor NHR-49 to exert its effect. Phytochemical analysis of BT revealed rutin, hyperoside, and 5-caffeoylquinic acid as the main BT components. Thus, these data demonstrate that BT has antioxidant and anti-obesity effects. However, further studies should be conducted to understand the mechanisms involved in its action.

Evaluation of the Antiasthmatic Activity of Carissa opaca in Animal Models

Carissa opaca Stapf ex Haines (C. opaca) fruit is used traditionally in the treatment of respiratory illnesses including asthma. However, there is no scientific evidence supporting its antiasthmatic activity. The current study was conducted to evaluate its antiasthmatic effects using in vivo and in vitro approaches. The methanolic crude extract of C. opaca fruit (Co.Cr.) was used and in vivo antiasthmatic activity was carried out using ovalbumin- (OVA-) sensitized and OVA-challenged BALB/c mice. In in vitro bronchorelaxant activity of crude extract, aqueous and n-hexane fractions of C. opaca were carried out on isolated rat tracheal strips. Co.Cr. (200 and 400 mg/kg) attenuated ovalbumin-induced changes in lung histochemistry with % decrease in peribronchial inflammation of 14.1 ± 0.21 and 65.8 ± 0.22 and % decrease in total inflammatory cell count of 35.7 ± 2.80 and 53.3 ± 2.30 in bronchoalveolar lavage fluid. Co.Cr., aqueous, and n-hexane fraction of C. opaca attenuated the precontractions induced by high K+ (80 mM) and carbachol (1 μM), respectively. In conclusion, the results showed that C. opaca possesses antiasthmatic activity via relaxant effect on bronchial smooth muscle which is mediated through calcium channel blockade and antimuscarinic activity. This study provides scientific evidence of the traditional use of C. opaca in the management of allergic asthma.

Chemical Composition of Cactus Pear Seed Oil: phenolics identification and antioxidant activity

Objectives

The chemical composition of cactus pear seed oil (Opuntia ficus-indica [L.] Mill.) was analyzed in terms of its fatty acid composition, tocopherol content, phenolic identification, and the oil's phenolic-rich fraction antioxidant power was determined.

Methods

Fatty acid profiling was performed by gas chromatography coupled to an FI detector. Tocopherols and phenolic compounds were analyzed by LC-FLD/UV, and the oil's phenolic-rich fraction antioxidant power was determined by phosphomolybdenum, DPPH assay and β-carotene bleaching test.

Results

Fatty acid composition was marked by a high unsaturation level (83.22 ± 0.34%). The predominant fatty acid was linoleic acid (66.79 ± 0.78%), followed by oleic acid (15.16 ± 0.42%) and palmitic acid (12.70 ± 0.03%). The main tocopherol was γ-tocopherol (172.59 ± 7.59 mg/kg. In addition, Tyrosol, vanillic acid, vanillin, ferulic acid, pinoresinol, and cinnamic acid were identified as phenolic compounds in the analyzed seed oil. Moreover, the oil's phenolics-rich fraction showed a significant total antioxidant activity, scavenged DPPH up to 97.85%, and effectively protected β-carotene against bleaching (97.56%).

Conclusion

The results support the potential use of cactus pear seed oil as a functional food.

Effects of enzymolysis and fermentation on the antioxidant activity and functional components of a coarse cereal compound powder based on principal component analysis and microstructure study

Abstract

In this study, a coarse cereal compound powder (CCCP) was prepared through enzymolysis, fermentation, and joint treatment with 10 coarse cereal types as raw materials. Using 10 evaluation indices, namely the scavenging capacity of 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH•), 2,2′‐azino‐bis‐(3‐ethylbenzthiazoline‐6‐sulfonic acid) (ABTS⁺), hydroxyl (OH•) and superoxide anion (O₂^–), the Fe²⁺ chelating capacity, the content of anthocyanin, flavone, soluble dietary fiber, reducing sugar and protein, antioxidant activity, and functional components of CCCP prepared by different methods were compared. Principal component analysis (PCA) was performed to establish a quality evaluation model of CCCP. Then, the effects of different treatments on the microstructure of CCCP were investigated. Two principal components (PCs) were extracted from PCA, with a cumulative contribution rate of 97.014%. In addition, the analysis of thermodynamic properties indicated that the initial gelatinization temperature of CCCP decreased after enzymolysis and fermentation and that it was easier to gelatinize. Particle size analyses revealed that different treatments could reduce the sample particles to different degrees. The average particle size in the three study groups decreased. Scanning electron microscopy (SEM) revealed that after different treatments, the samples were destroyed to different extents, which facilitated easy dissolution of active substances. Fourier‐transformed‐infrared spectroscopy (FTIR) revealed that the changes of CCCP functional groups after fermentation and joint treatment were more significant than those after enzymolysis.

Practical Application

In this study, enzymolysis and fermentation techniques were used to improve the antioxidant activity and functional components of CCCP, and the effects of different treatments on the microstructure of CCCP were investigated. The bioavailability and nutrient composition of CCCP could be significantly improved by pretreatment, provide useful reference for the development of beneficial ingredients in cereal meal products and the application of different pretreatment methods.

Evaluation of stability and antibacterial properties of extracted chlorophyll from alfalfa (Medicago sativaL.)

This study aims to the evaluation of stability and antibacterial properties of the extracted chlorophyll from alfalfa. For this purpose, chlorophylls a and b from alfalfa were extracted by enzymatic and ultrasound methods. The results show that the content of chlorophyll a in alfalfa is higher than chlorophyll b and also the enzymatic method demonstrates higher yield in chlorophyll extraction. In the present study, the chlorophyll stability was evaluated in different conditions including temperature (-18, 4 and 25 °C), time (15, 30 and 45 days), pH (4.5 and 5.5) and NaCl concentration (50, 100 and 150mM). Also, antibacterial effects were investigated at different concentrations of chlorophyll (20, 40, 60 and 100μM) against some bactriaes by agar disk diffusion and microdilution (MIC and MBC) methods. The results demonstrate that 50 mM of NaCl, temperature -18 °C, pH = 4.5 and time15 days are associated with the highest chlorophyll a and b contents. Furthermore, the resistance of bacterias in agar disk diffusion and microdilution methods observe Listeria < Staphylococcus < Salmonella < Escherichia < Pseudomonas and Listeria<(Staphylococcus = Escherichia = Salmonella)<Pseudomonas, respectively. Also, there are significant differences between different chlorophyll concentrations against Listeria and Staphylococcus in evaluation of inhibition effects of total extracted chlorophyll (p < 0.05).

Antioxidant Effects and Potential Molecular Mechanism of Action of Limonium aureum Extract Based on Systematic Network Pharmacology

Oxidative stress is the redox imbalance state of organisms that involves in a variety of biological processes of diseases. Limonium aureum (L.) Hill. is an excellent wild plant resource in northern China, which has potential application value for treating oxidative stress. However, there are few studies that focused on the antioxidant effect and related mechanism of L. aureum. Thus, the present study combining systematic network pharmacology and molecular biology aimed to investigate the antioxidant effects of L. aureum and explore its underlying anti-oxidation mechanisms. First, the antioxidant activity of L. aureum extracts was confirmed by in vitro and intracellular antioxidant assays. Then, a total of 11 bioactive compounds, 102 predicted targets, and 70 antioxidant-related targets were obtained from open source databases. For elucidating the molecular mechanisms of L. aureum, the PPI network and integrated visualization network based on bioinformatics assays were constructed to preliminarily understand the active compounds and related targets. The subsequent enrichment analysis results showed that L. aureum mainly affect the biological processes involving oxidation-reduction process, response to drug, etc., and the interference with these biological processes might be due to the simultaneous influence on multiple signaling pathways, including the HIF-1 and ERBB signaling pathways. Moreover, the mRNA levels of predicted hub genes were measured by qRT-PCR to verify the regulatory effect of L. aureum on them. Collectively, this finding lays a foundation for further elucidating the anti-oxidative damage mechanism of L. aureum and promotes the development of therapeutic drugs for oxidative stress.

Phytochemistry, Pharmacology, and Nutraceutical Profile of Carissa Species: An Updated Review

Carissa, a genus of the Apocynaceae family, consists of evergreen species, such as shrubs as well as small trees that are native to Asia, Africa, and Oceania’s subtropical and tropical regions. Most of the Carissa species are traditionally used to treat various diseases, such as chest pain, headaches, gonorrhoea, rheumatism, syphilis, oedema, rabies, stomach pain, hepatitis, cardiac diseases, and asthma. The pharmacological studies on Carissa species revealed its antioxidant, antimicrobial, anticancer, cardioprotective, antipyretic, analgesic, wound healing, anticonvulsant, antiarthritic, adaptogenic, anti-inflammatory, and antidiabetic activities, thus validating its use in indigenous medicine systems. The review article summarised the comprehensive literature available, including morphology, indigenous uses, bioactive composition, nutraceutical, and pharmacological activities of Carissa species. A total of 155 research papers were cited in this review article. The Carissa fruits are rich in dietary fibre, lipids, proteins, carbohydrates, vitamin C, and macro- and micro-elements. A total of 121 compounds (35 polyphenols (flavonoids and phenolic acids), 30 lignans, 41 terpenoids, 7 steroids, 2 coumarins, and 6 cardiac glycosides) have been extracted from C. spinarum, C. carandas, and C. macrocarpa. Among all chemical constituents, lupeol, carissol, naringin, carisssone, scopoletin, carissaeduloside A, D, J, carandinol, sarhamnoloside, carissanol, olivil, carinol, 3β-hydroxyolean-11-en-28,13β-oilde, ursolic acid, and carissone are the key bioactive constituents responsible for pharmacological activities of genus Carissa. The gathered ethnopharmacological information in the review will help to understand the therapeutic relevance of Carissa as well as paving a way for further exploration in the discovery of novel plant-based drugs.

Therapeutic Uses of Wild Plants by Rural Inhabitants of Maraog Region in District Shimla, Himachal Pradesh, India

The main aim of this study is to document important ethnomedicinal plants from the Maraog region, located in the district of Shimla in Himachal Pradesh, India. A total of 110 medicinal plant species belonging to 102 genera and 57 families were reported from the study site. All of the species were collected from wild habitats. The rural people of the Maraog region were surveyed through interview methods, group discussions, and participatory observations. In the current study, data were collected from 88 informants through the snowball method. A total of 110 plant species were collected from the study area, including 64 herbs, 24 shrubs, 9 trees, 5 climbers, 3 grasses, and 5 ferns. Most of the plant species, reported from the study area, belong to the Rosaceae and Asteraceae families, each contributing 12 plant species, followed by the Lamiaceae family with 6 plant species. The most used part of the plant in the preparation of herbal medications is the leaves, which have been reported in 62 plants, followed by roots in 14 plants, and flowers and other aerial parts in 9 plants. The ethnomedicinal data were analyzed using “Use Value,” a statistical quantitative method, with Artemisia vestita having the highest use value (1.00), followed by Cannabis sativa (0.79), Rhododendron arboreum (0.79), and Datura stramonium (0.71). Older people were found to have a vast knowledge of wild medicinal plants, while the younger generation’s knowledge was lacking. As a result, traditional knowledge about the use of plants as a source of medicine has decreased day-by-day. Therefore, there is a need to document traditional ethnobotanical knowledge. The data could serve as a basis for research by pharmacological and nutraceutical industries for the development of novel drugs.

Assessing the ethnobotanical potential of Carissa opaca berries by merging outcomes from metabolomics profiling, enzyme assays, and in silico docking studies

The phytochemical profile of Carissa opaca fruit extract and fractions was established through dereplication strategies employing LC-MS/MS and global natural product social molecular networking (GNPS). Crude extract and fractions were evaluated for their potential to inhibit α-glucosidase and urease in vitro. Flavonoid-O-glycosides, flavonoid-C-glycosides, flavonoids, proanthocyanidin B2, phenolics, and triterpenoids were annotated as the major classes of secondary metabolites present in the extract and fractions. α-Glucosidase inhibition was associated with n-butanol and ethyl acetate fractions comparable to acarbose (IC₅₀ = 120.43 µg/mL) with IC₅₀ values of 123.67 and 131.72 µg/mL, respectively. The ethyl acetate fraction showed good urease inhibition comparable with thiourea (IC₅₀ = 103.71 µg/mL) with an IC₅₀ value of 109.14 µg/mL. Molecular docking studies of compounds observed in the crude extract and bioactive fractions had significant binding scores, which supported results for enzyme inhibition in vitro. This study provided a detailed phytochemical profile of C. opaca fruit and its enzyme inhibition potential.

Kenaf (Hibiscus cannabinus L.) Leaves and Seed as a Potential Source of the Bioactive Compounds: Effects of Various Extraction Solvents on Biological Properties

Hibiscus cannabinus (Kenaf) is a potential source of bioactive constituents and natural antioxidant. The current study determined the impact of various solvents on extraction yield, recovery of polyphenol and flavonoid, antioxidant, anticancer, and antibacterial properties of Kenaf leaves and seed. The powder of leaves and seed was separately extracted with n-hexane, ethyl acetate, ethanol, and water solvent. Among them, the ethanol extract of leaves and seed showed the highest extraction yield, and their GC-MS analysis revealed a total of 55 and 14 bioactive compounds, respectively. The total polyphenols (TP) and flavonoids (TF) content were quantified by a spectrophotometric technique where water extracts displayed a noteworthy amount of TP and TF content compared to other extracts. A similar demonstration was noticed in antioxidant activity, evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) and hydrogen peroxide scavenging capacity. In addition, cytotoxicity and anti-lung cancer activity were identified against mouse embryonic fibroblast (NIH3T3) and human lung cancer (A549) cells. All extracts of leaves and seed were observed as non-toxic to the NIH3T3 cells, but slight toxicity was expressed by n-hexane extracts at the optimum dose (1000 µg/mL) of treatment. In parallel, n-hexane and ethanol extracts (leaves and seed) exposed promising anti-lung cancer activity at the same concentration. Furthermore, antibacterial activity was assessed using disc diffusion assay, and seed extracts exhibited a significant inhibition zone against Gram-positive and Gram-negative microorganisms. Overall, Kenaf seed extracted with polar solvents was found very potent in terms of important bioactive compounds and pharmacological aspects, which can be an excellent biological matrix of natural antioxidants.

Anti-biofilm activity of plant derived extracts against infectious pathogen-Pseudomonas aeruginosa PAO1

BACKGROUND

Biofilm forming ability of Pseudomonas aeruginosa make them vulnerable, because it makes them recalcitrant against various antibiotics. Quorum sensing (QS) is cell density based signaling that helps in bacterial cell-cell communication, which regulated various virulence factors such as pigment and biofilm formation that contribute in the establishment of chronic infections. The interruption of QS is one of the effective approach to control various virulence factors. Present study was intended with the aim to authenticate antibiofilm potential in different solvents based extracts of selected medicinal plant species viz. Berginia ciliata, Clematis grata and Clematis viticella traditionally used by the inhabitants of Himalayan region of Pakistan to treat various pathogenic diseases. P. aeruginosa PAO1, an opportunistic pathogen and involves in various life-threatening infections specifically in immune deficient patients was used as a model pathogen.

METHODS

Plants were extracted in various organic (ethanol, methanol, acetone, ethyl acetate, hexane, chloroform) as well as in aqueous solvents and their ability to inhibit biofilm was measured. Biofilm of PAO1 was grown in Jensen's medium while growing at 30°C and crystal violet assay was performed to assess the biofilm inhibiting activity of plant extracts.

RESULTS

Solvents play a vital role in extraction of plant components and it was found that the plants in various solvents exhibit different activity against the PAO1 biofilm. Comparatively, 1% methanolic extract of B. ciliata (rhizome with skin), showed more than 80% inhibition of biofilm formation without effecting on the growth of the bacterium. Significant correlation between flavonoids content and antibiofilm activity in methanolic extract revealed the contribution of secondary metabolites in P. aeruginosa (PAO1) biofilm inhibition.

CONCLUSION

Our study revealed that plants under investigation more specifically B. ciliata could be a potential candidate for drug discovery to treat P. aeruginosa PAO1, induced infectious diseases especially for its biofilm treatment.

Evaluation of antioxidant and anti-inflammatory potency of Lepidium pinnatifidum Ledeb

Backgroound

Lepidium pinnatifidum is a multipurpose, beneficial plant and known well for its indigenous therapeutic standards. Current study is aimed to investigate antioxidant and anti-inflammatory potency of Lepidium pinnatifidum.

L. pinnatifidum dried powder was extracted with crude methanol (LPM) and then fractionated with various solvents to get respective fractions, termed as, n-hexane (LPH), chloroform (LPC), ethyl acetate (LPE), butanol (LPB) and the aqueous fraction (LPA). Fractions were evaluated for total flavonoid and phenolic content. Antioxidant profile was quantified via an array of antioxidant assays. Anti inflammatory activity was evaluated in vitro, and further assessed by in vivo study in Sprague Dawley rat.

Result

Total phenolics (TPC) range from 48.15 ± 1.03–241.23 ± 1.07 mg GAE/g while total flavonoids (TFC) quantified were 16.32 ± 1.14–136.32 ± 1.14 mg RE/g. The in vitro antioxidant assays exhibited remarkable radicals scavenging action in different assays. Substantial positive correlation was instituted between TPC, TFC and various antioxidant assays. Inhibition of the heat induced protein denaturation reflected anti inflammatory potency, further supported by in vivo carrageenan induced paw edema.

Conclusion

The obtained results lead to suggesting the therapeutic perspective of L. pinnatifidum in oxidative stress and inflammation associated ailments. The bio active ingredients behind its potential protectivity needs to be further confirmed.

Evaluation of antioxidant activities, toxicity studies and the DNA damage protective effect of various solvent extracts of Litsea cubeba fruits

Litsea cubeba is devoured by the ethnic individuals of Arunachal Pradesh in India as food and has been traditionally used for curing different ailments. The purpose of present study was to investigate the antioxidant activities of fruits of L. cubeba using different solvent extracts, quantification of phenolics, toxicity studies and DNA damage protective activities. The antioxidant activities of fruits using five different solvent extracts completed utilizing different in vitro examines. The quantitation of phenolic and polyphenolic compounds in the methanol extract of the fruits was carried out by HPLC. The in vitro haemolytic examination of plant concentrates were completed on rat erythrocytes. Appraisal of cytotoxicity of eatable fruits was assessed by MTT measure. The genotoxicity of the contemplated plant was tried by the single-cell gel electrophoresis comet measure. The DNA defensive impacts of the aqueous extracts of fruits on rodent lymphocyte DNA lesions were likewise assessed with the comet test. The extract obtained by methanol exhibited the highest antioxidant activity. The HPLC examination of the methanol concentrate of the plant demonstrated the occurrence of different phenolic acids and flavonoids like caffeic acid (145.96μg/100mg DE), syringic acid (125.85 μg/100mg DE), ferulic acid (155.89 μg/100mg DE), apigenin (28.43 μg/100mg DE), kaempferol (53.41 μg/100mg DE) etc. in various amounts. The consequences of haemolytic lethality, cytotoxicity and genotoxicity of fluid concentrates of the edible plant ensure the security at cell and genomic level. The fluid concentrate of the plant fundamentally repressed DNA harm and these information recommend that the watery concentrate of L. cubeba can forestall oxidative DNA harm to rodent lymphocytes, which is likely because of antioxidant constituents in the concentrate. These outcomes demonstrate that L. cubeba can be utilized in dietary applications with a possibility to diminish oxidative pressure.

The antioxidant 2,3-dichloro,5,8-dihydroxy,1,4-naphthoquinone inhibits acetyl-cholinesterase activity and amyloid β42 aggregation: A dual target therapeutic candidate compound for the treatment of Alzheimer's disease

Alzheimer's disease is characterized by amyloid β aggregation and cholinergic neurodegeneration. In the present study, pure DDN (2,3-dichloro-5,8-dihydroxy-1,4-naphthoquinone) was examined, for the first time, for its dual potential as inhibitor of acetylcholinesterase (AChE) and Aβ₄₂ aggregation. Such investigation was encouraged by the in vitro high antioxidant potential of DDN. Indeed, it revealed interesting antioxidant activity with IC₅₀ values of 9.8 and 4.3 µM for ABTS and reducing power, respectively. The ability of DDN to counteract Aβ₄₂ aggregation was evaluated by thioflavine-T assay. Strong inhibition of Aβ₄₂ aggregation of more than 90% at 25 µM was measured. Moreover, results showed that DDN inhibited AChE (IC₅₀ = 14.5 µM). To better understand the interactions between DDN and AChE, molecular docking was performed. Obtained data predicted a high interaction characterized by hydrogen bonding at TYR337 as for galanthamine (positive control). Several residues involved in AChE hydrophobic interactions were similarly implicated in binding of this domain to DDN (ASP74, THR83, and TYR124). All these data would be useless if DDN could not pass the blood-brain barrier. So, DDN was loaded into alginate microspheres to enhance its stability and bioavailability. Thereafter, drug release profiles were assessed using immersion cell apparatus.

In-Vitro Antioxidant Properties of Lipophilic Antioxidant Compounds from 3 Brown Seaweed

Lipophilic compounds of seaweed have been linked to their potential bioactivity. Low polarity solvents such as chloroform, diethyl ether, n-hexane and their various combinations were used to extract the lipophilic antioxidants from brown seaweed namely Himanthalia elongata, Laminaria saccharina and Laminaria digitata. An equal-volume mixture of chloroform, diethyl ether and n-hexane (Mix 4) gave the highest total phenol (52.7 ± 1.93 to 180.2 ± 1.84 mg gallic acid equivalents/g), flavonoid (31.9 ± 2.65 to 131.3 ± 4.51 mg quercetin equivalents/g), carotenoid (2.19 ± 1.37 to 3.15 ± 0.91 μg/g) and chlorophyll content (2.88 ± 1.08 to 3.86 ± 1.22 μg/g) in the tested seaweeds. The extracts were screened for their potential antioxidant capacity and the extracts obtained from the selected solvents system exhibited the highest radical scavenging capacity against 2,2′-diphenly-1-picrylhydrazyl radical (EC₅₀ 98.3 ± 2.78 to 298.8 ± 5.81 mg/L) and metal ions (EC₅₀ 228.6 ± 3.51 to 532.4 ± 6.03 mg/L). Similarly, the same extract showed the highest ferric reducing antioxidant power (8.3 ± 0.23 to 26.3 ± 0.30 mg trolox equivalents/g) in all the seaweeds. Rapid characterization of the active extracts by liquid chromatography coupled with photodiode array detector and electrospray ionization tandem mass spectrometry (LC-PDA–ESI-MS/MS) identified cyanidin-3-O-glucoside, fucoxanthin, violaxanthin, β-carotene, chlorophyll a derivatives and chlorophyll b derivatives in the tested seaweed. The study demonstrated the use of tested brown seaweed as potential species to be considered for future applications in medicine, cosmetics and as nutritional food supplement.

Molecular strategies for identification and characterization of some wild edible mushrooms of Nagaland, India

Nagaland has a rich macro fungal flora but not many works has been carried out till today. Present investigation deals with molecular characterization and phylogenetic analysis of six popular wild edible mushrooms (WEMs) species of Nagaland, India viz., Lentinula edodes, Lentinus squarrosulus, L. sajor-caju, L. tigrinus, Schizophyllum commune, Termitomyces heimii and one variety of L. squarrosulus based on molecular markers (ITS, 18S rRNA and 28S rRNA genes) data. The use of DNA markers for identification of mushrooms is highly desirable and practical because it is reliable and quick. This approach could resolve successfully the identity and interrelationship of six WEM species with respect to their infrageneric groups. The high CI values of the mushrooms species indicated the low homoplasy nature. The ITS and 28S rRNA data sets were found to be more informative then the 18S rRNA datasets. The molecular data generated for each mushroom species in the present investigation will help in correct identification and conservation of these widely consumed WEM of the region. Additionally assessment of bioactive molecules indicates that studied species are rich in pro-health bioactive compounds. The study hence throws light on the potential and importance of mushrooms especially the edible mushrooms as an economically valuable crop.

Quantification of Bioactive Compounds and Evaluation of the Antioxidant Activity of Carissa edulis Valh (Apocynaceae) Leaves

Carissa edulis is a plant used in the management of oxidative stress and inflammatory related disorders such as malaria, rheumatism inflammation, and cardiovascular diseases. The present study evaluates the total phenolic content, antioxidant capacity (DPPH, ABTS, and FRAP), and the bioactive compounds present in the various extracts of C. edulis (HEC, MEC, AEC, and PC). An HPLC analysis determined the different compounds present in the extracts. High concentration of total phenolic content was observed in aqueous and methanolic extracts more than in the hydroethanolic extract though not significantly different. Flavonoids were higher in the hydroethanolic and methanolic extracts, respectively, with 14.84 mg RE/g extract and 12.02 mg RE/g extract. Tannins were also found in large amounts in the same two extracts with 26.76 mg TAE/g extract and 34.67 mg TEE/g extract. The percentage radical scavenging activity DPPH ranged between 58.63% and 94.67% for aqueous extract and for ABTS between 51.39% and 94.12% for the methanolic extract. The highest FRAP was obtained in the methanolic extract (6.73 g AAE/100 g extract). HPLC analysis revealed the presence of quercetin, rutin, and gallic acid in the different extracts. C. edulis represents a potential source of bioactive components with antioxidant capacity.

Dehydrofreezing of peach: Blanching, D-sodium erythorbate vacuum infiltration, vacuum dehydration, and nitrogen packaging affect the thawed quality of peach

Peach slices were blanched (BL), vacuum infiltrated with D-sodium erythorbate (SE), predehydrated, and then nitrogen packaged (NP) before freezing to improve their quality. Our results showed that the BL, SE, and NP pretreatments remarkably improved the quality of frozen peaches. Frozen peaches pretreated by SE+NP+BL showed the highest total phenolic content (TPC), total antioxidant capacity (TAC), and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging capacity after thawing at 20°C for 24 hr. The soluble solids content and firmness of low-maturity peaches dehydrated to 25% dehydration of their weight were 11.1% and 211.2% higher than those of the control samples, respectively, while their drip loss was 71.9% lower than that of the controls. In conclusion, pretreatment by BL, predehydration, SE, and NP before freezing can significantly improve the quality of frozen peaches after thawing. PRACTICAL APPLICATIONS: We believe that our study results have practical applications because the method of vacuum dehydration combined with blanching, nitrogen packaging, and D-sodium erythorbate treatment of peaches maintains their original taste, inhibits color change, and decreases drip loss. This method is suitable for fruit frozen and stored at a commercial freezing temperature of -20°C and does not need advanced equipment or technology. It can be easily carried out during the fruit freezing process and can be applied to other frozen stored fruits besides peaches.

Nutritional composition, mineral content, antioxidant activity and quantitative estimation of water soluble vitamins and phenolics by RP-HPLC in some lesser used wild edible plants

The present study aimed to investigate the nutritional properties and antioxidant activities of six underutilized wild edible plants viz. Ipomoea aquatica, Achyranthes aspera, Aasystasia ganjetica, Enhydra fluctuans, Oldenlandia corymbosa and Amaranthus viridis that are commonly consumed as food in the India The antioxidant properties of the plants were evaluated by using 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging activity, ABTS radical scavenging ability, reducing power capacity, metal chelating activity, lipid peroxidation assay, estimation of total phenolic content and flavonoids content in different solvent extraction system like benzene, chloroform, methanol and 70% aqueous (aq.) ethanol. The quantitation of phenolic acids and flavonoids and water soluble vitamins in these plants were carried out by HPLC using Acclaim C 18 column (5 μm particle size, 250 × 4.6 mm), Dionex Ultimate 3000 liquid chromatograph and detection was carried out in photo diode array (PDA) detector. The results of investigation showed that these plants are rich sources of protein, carbohydrate minerals and vitamins, especially the B group of vitamins that can contribute immensely to nutrition, food security, and health and therapeutic benefits. The different levels of antioxidant activities were found in the solvent systems used. The HPLC analysis also showed the presence of phenolic acids and flavonoids in various amounts in these plants which could be utilized as natural antioxidant.

Amantagula Fruit (Carissa macrocarpa (Eckl.) A.DC.): Nutritional and Phytochemical Characterization

Fruits are one of the most promising food matrices and they have been explored in the discovery of new natural and safer bioactive compounds. Carissa macrocarpa (Eckl.) A. DC. fruits are widely consumed in African countries for the preparation of traditional foodstuff, but also for their beneficially health effects. Thus, as the authors' best knowledge there are no studies on the chemical and bioactive characterization of these fruits. Therefore, fruits of C. macrocarpa from Tunisia were chemically characterized regarding their nutritional value and bioactive compounds. Furthermore, the hydroethanolic extract of these fruits was evaluated regarding its bioactive properties. The fruit powder sample showed high amounts of sugars and polyunsaturated fatty acids (PUFA). The organic acids and tocopherols' profiles revealed the presence of five organic acids and two tocopherol isoforms, being quinic acid and α-tocopherol the most abundant. The hydroethanolic extract of the fruits presented high antioxidant, cytotoxic, anti-inflammatory, and antibacterial properties, showing activity against all the bacterial strains studied, also inhibiting the cell growth of all the tested tumor cell lines, with the exception of HepG2, and did not reveal toxicity for the non-tumor cells PLP2. Therefore, the fruits of C. macrocarpa could be included in a daily basis diet as a source of high nutritional quality compounds with high bioactive potential.

Calendula arvensis L. as an anti-cancer agent against breast cancer cell lines

Calendula arvensis L. is used in traditional folk medicine for the treatment of several diseases. Leaves, stems, and flowers of C. arvensis were extracted using a Soxhlet extractor with different solvents (i.e., hexane, chloroform, ethyl acetate, and methanol). The ethyl acetate extract of C. arvensis flowers (CAF EtOAC) had cytotoxic activity against MCF-7 and MDA-MB-231 breast cancer cells, with IC₅₀ values of 70 and 78 µg/mL, respectively. Microscopic examination revealed concentration-dependent cell shrinkage, cell detachment, nuclear fragmentation, and chromatin condensation. The CAF EtOAC inhibited the migration of cultured cells in a scratch wounding assay, indicating a possible defense against metastasis. The same extract also caused apoptosis by downregulating Bcl-2 and upregulating Bax and caspase 3/7 activity. Phytochemical analyses revealed the presence of phenols and flavonoids, and gas chromatography-mass spectroscopy (GC-MS) revealed a high content of linolenic acid in the extract. Based on our data, the CAF EtOAC may provide active ingredients for the development of novel chemotherapeutics for breast cancer therapy.