568,295 results match your criteria antioxidant activity

Impact of the use of pressurized liquids on the extraction and functionality of proteins and bioactives from brewer's spent grain.

Food Chem 2021 Apr 28;359:129874. Epub 2021 Apr 28.

Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona Km. 33.600, 28871 Alcalá de Henares (Madrid), Spain; Instituto de Investigación Química "Andrés M. del Rio" (IQAR), Universidad de Alcalá, Ctra. Madrid-Barcelona Km. 33.600, 28871 Alcalá de Henares (Madrid), Spain. Electronic address:

A green methodology based on pressurized liquids (PLE) to extract proteins and obtain highly active extracts from brewer's spent grain (BSG) is proposed. Box-Behnken experimental design was employed to study the effect of extraction parameters on the protein content (PC), the total phenolic content (TPC), and the antioxidant activity of extracts. Results were compared with those obtained by conventional alkaline extraction assisted with ultrasounds (UAE). Read More

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Use of lemongrass essential oil as a feed additive in quail's nutrition: its effect on growth, carcass, blood biochemistry, antioxidant and immunological indices, digestive enzymes and intestinal microbiota.

Poult Sci 2021 Mar 26;100(6):101172. Epub 2021 Mar 26.

Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.

The present study was designed to assess the impact of dietary supplementation of lemongrass essential oil (LGEO) on growth performance, carcass traits, liver and kidney function, immunity, antioxidant indices and caecal microbiota of growing quail. A total of 200 Japanese quails at 1-week-old were haphazardly allotted to 5 groups of 40 chicks in five replicates (8 per replicate). The first group was the control group, while LGEO was added at levels of 150, 300, 450, and 600 mg/kg diet in the 2nd, 3rd, 4th and 5th groups, respectively. Read More

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New markers of oxidative stress in lichen planus and the influence of hepatitis C virus infection - a pilot study.

Rom J Intern Med 2021 May 5. Epub 2021 May 5.

"Carol Davila" University of Medicine and Pharmacy, 37 Dionisie Lupu, 020021Bucharest, Romania.

Introduction: Lichen planus (LP) is a mucocutaneous T-cell mediated disorder of unknown etiology. There is growing evidence that oxidative stress is an important player in the pathogenesis of LP. Therefore, we have investigated oxidative stress markers in LP and the influence of hepatitis C virus (HCV) infection, a frequently associated condition, on oxidative stress in LP patients. Read More

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Rational selection of bioactive principles for wound healing applications: Growth factors and antioxidants.

Int Wound J 2021 May 5. Epub 2021 May 5.

Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Monterrey, Nuevo León, Mexico.

Wound healing is a complex process of communication between growth factors, reactive species of oxygen, cells, signalling pathways, and cytokines in the extracellular matrix, in which growth factors are the key regulators. In humans, the main regulators of the cellular responses in wound healing are five growth factors, namely EGF, bFGF, VEGF, and TGF-β1. On the other hand, antioxidants such as astaxanthin, beta-carotene, epigallocatechin gallate, delphinidin, and curcumin have been demonstrated to stimulate cell proliferation, migration and angiogenesis, and control inflammation, to suggest a practical approach to design new strategies to treat non-healing cutaneous conditions. Read More

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Breast Cancer Apoptosis and the Therapeutic Role of Luteolin.

Chirurgia (Bucur) 2021 Mar-Apr;116(2):170-177

Breast cancer represents one of the three most common gynecological cancers, with each subtype having distinct risk profile and treatment strategies. Optimal therapy for each case depends not only on tumor subtype and cancer stage, but also on patient preferences. Thus, the final therapeutic choice seems complicated to be reached. Read More

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Curcumin Attenuates Sarcopenia in Chronic Forced Exercise Executed Aged Mice by Regulating Muscle Degradation and Protein Synthesis with Antioxidant and Anti-inflammatory Effects.

J Agric Food Chem 2021 May 5. Epub 2021 May 5.

Department of Food Science and Biotechnology, Sejong University, 209, Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea.

The aim of the current study is to investigate the effects of spray dry powders of containing 40% curcumin (CM-SD), as a new aqueous curcumin formula, on sarcopenia in chronic forced exercise executed 10 month old ICR mice. CM-SD (80 and 40 mg/kg) increased calf thicknesses and strengths, total body and calf protein amounts, and muscle weights in both gastrocnemius and soleus muscles. mRNA expressions regarding muscle growth and protein synthesis were induced, while those of muscle degradation significantly declined in CM-SD treatment. Read More

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N-Acetylcysteine Ameliorates Neurotoxic Effects of Manganese Intoxication in Rats: A Biochemical and Behavioral Study.

Neurochem Res 2021 May 5. Epub 2021 May 5.

Department of Biophysics, Basic Medical Sciences Block II, Panjab University, Chandigarh, 160014, India.

Clinical and experimental evidences reveal that excess exposure to manganese is neurotoxic and leads to cellular damage. However, the mechanism underlying manganese neurotoxicity remains poorly understood but oxidative stress has been implicated to be one of the key pathophysiological features related to it. The present study investigates the effects associated with manganese induced toxicity in rats and further to combat these alterations with a well-known antioxidant N-acetylcysteine which is being used in mitigating the damage by its radical scavenging activity. Read More

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Novel symmetrical and unsymmetrical fluorine-containing metallophthalocyanines: synthesis, characterization and investigation of their biological properties.

Dalton Trans 2021 May 5. Epub 2021 May 5.

Department of Chemistry, Istanbul Technical University, TR-34469, Istanbul, Turkey.

In this study, a new fluorinated phthalonitrile compound namely 5-bis[4-(trifluoromethoxy)-thiophenyl] phthalonitrile was synthesized. In addition, peripherally substituted symmetric metallated phthalocyanine derivatives [M = Co (2) and M = Zn (3)] and unsymmetrically substituted zinc phthalocyanine (ZnPc) complex (4) were synthesized by cyclotetramerization of this phthalonitrile compound. Characterization of all new compounds was carried out using FT-IR, NMR, UV-Vis, and mass spectroscopy. Read More

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Modulator effect of mangiferin on biochemical characterization in 7,12-dimethylbenz[a]anthracene induced oral cancer in experimental hamsters.

Vet Med Sci 2021 May 5. Epub 2021 May 5.

Department of Intensive Care Medicine, Qingdao Municipal Hospital, Qingdao, China.

Background: Newly, chemo-preventive technique might be a hopeful advancement in developing countries for treating cancers with the aid of toxic less natural based constituents. Malignancy urges to augment effectual chemo-preventive agents that are look forward to suppress the tumours which may be stimulated by chewing and smoking of tobacco and over alcohol consumption related with the high prevalence of human oral cancer (OC) patients.

Methods: In the present research, we examined to assess antioxidants, lipid peroxidation (LPO) and detoxification enzymes levels of anticancer activity of mangiferin on 0. Read More

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Multifunctional Graphdiyne-Cerium Oxide Nanozymes Facilitate MicroRNA Delivery and Attenuate Tumor Hypoxia for Highly Efficient Radiotherapy of Esophageal Cancer.

Adv Mater 2021 May 5:e2100556. Epub 2021 May 5.

CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, China.

Radioresistance is an important challenge for clinical treatments. The main causes of radioresistance include hypoxia in the tumor microenvironment, the antioxidant system within cancer cells, and the upregulation of DNA repair proteins. Here, a multiple radiosensitization strategy of high-Z-element-based radiation enhancement is designed, attenuating hypoxia and microRNA therapy. Read More

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Immunomodulatory effects of bee pollen on doxorubicin-induced bone marrow/spleen immunosuppression in rat.

J Food Biochem 2021 May 5:e13747. Epub 2021 May 5.

Zoology Department, College of Science, Fayoum University, Fayoum, Egypt.

This study investigated the immunomodulatory effects of Bee Pollen (BP) on Doxorubicin (DOX)-induced bone marrow/spleen suppression in rats. 48 Wistar rats were divided into 6 groups (n = 8/group); control, DOX (5 mg/kg), BP (100 mg/kg), BP (200 mg/kg), BP (100 mg/kg) +DOX, and BP (200 mg/kg) +DOX groups. BP was administered orally for 42 days and 5 mg/kg of DOX was injected intravenously at days 7, 14, 21, 28, 35 and 42. Read More

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Effect of cold plasma pretreated hot-air drying on the physicochemical characteristics, nutritional values, and antioxidant activity of shiitake mushroom.

J Sci Food Agric 2021 May 5. Epub 2021 May 5.

Department of Traditional Chinese Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, 310016, China.

Background: Shiitake mushroom is one of the most popular delicious vegetables, but fresh shiitake mushroom has short shelf life due to biochemical degradation. Drying can prolong the shelf life of mushroom. Additionally, application of cold plasma pretreatments (CPT) before drying can preserve the product quality, processing cost, and nutritional values. Read More

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Editorial: Nutrition and Dementia.

J Nutr Health Aging 2021 ;25(5):590-592

John E. Morley, MB, BCh, Division of Geriatric Medicine, Saint Louis University, SLUCare Academic Pavilion, Section 2500, 1008 S. Spring Ave., 2nd Floor St. Louis, MO 63110, Email: , Twitter:

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January 2021

Combine effect of exposure to petrol, kerosene and diesel fumes: On hepatic oxidative stress and haematological function in rats.

Toxicol Ind Health 2021 May 5:7482337211012498. Epub 2021 May 5.

Cancer Immunology and Biotechnology Center, The University of Nottingham, Nottingham, UK.

Petroleum product fumes (PPFs) containing toxic organic components are pervasive in the environment, emanating from anthropogenic activities, including petroleum exploration and utilization by end-user activities from petrol-gasoline stations. Petrol station attendants are exposed to PPF through inhalation and dermal contact with consequent toxicological implications. We investigated the effects of chronic exposure (60 and 90 days) to petrol (P), kerosene (K) and diesel (D) alone and combined exposure to petrol, kerosene and diesel (PKD) fumes on hepatotoxicity, haematological function and oxidative stress in rats. Read More

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The comparison of the phytochemical composition, antioxidant and enzyme inhibition activity of two moss species: (Brid.) T. Kop. and Sull., from southwest ecological region in Turkey.

Nat Prod Res 2021 May 5:1-6. Epub 2021 May 5.

Department Science Education, Adnan Menderes University, Faculty of Education Mathematics and Science Education, Aydın, Turkey.

A limited number of mosses have been studied regarding antioxidant activity and enzyme inhibition effects. In the present study, the phytochemical content, antioxidant, and enzyme inhibition properties of the ether extracts from T.J. Read More

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New bioactive α-pyrone from wild mushroom .

Nat Prod Res 2021 May 5:1-7. Epub 2021 May 5.

Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, PR China.

Chemical investigation of (Batsch) Fr. led to the isolation of a pair of new enantiomers ()-5-(4-methoxy-2-oxo-2H-pyran-6-yl)pent-4-en-1-yl 2-hydroxypropanoate (/) along with 14 known compounds (-) for the first time from this mushroom. The structures of new compounds were elucidated based on extensive spectroscopic data analysis of MS, 1D and 2D NMR, and their absolute configurations were confirmed by comparison of the experimental and calculated ECD data. Read More

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Pharmaceuticals targeting signaling pathways of endometriosis as potential new medical treatment: A review.

Med Res Rev 2021 May 5. Epub 2021 May 5.

Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong.

Endometriosis (EM) is defined as endometrial tissues found outside the uterus. Growth and development of endometriotic cells in ectopic sites can be promoted via multiple pathways, including MAPK/MEK/ERK, PI3K/Akt/mTOR, NF-κB, Rho/ROCK, reactive oxidative stress, tumor necrosis factor, transforming growth factor-β, Wnt/β-catenin, vascular endothelial growth factor, estrogen, and cytokines. The underlying pathophysiological mechanisms include proliferation, apoptosis, autophagy, migration, invasion, fibrosis, angiogenesis, oxidative stress, inflammation, and immune escape. Read More

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UV-B exposure and exogenous hydrogen peroxide application lead to cross-tolerance toward drought in Nicotiana tabacum L.

Physiol Plant 2021 May 4. Epub 2021 May 4.

Biosystems Engineering, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico.

Acclimation of plants to water deficit involves biochemical and physiological adjustments. Here, we studied how UV-B exposure and exogenously applied hydrogen peroxide (H O ) potentiates drought tolerance in tobacco (Nicotiana tabacum L. cv. Read More

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Effect of lycopene on AsO induced oxidative stress in SH-SY5Y cells.

Mol Biol Rep 2021 May 4. Epub 2021 May 4.

Department of Biochemistry, Faculty of Medicine, İstanbul Medeniyet University, İstanbul, Turkey.

It is known that oxidative stress may cause neuronal injury and several experimental models showed that AsO exposure causes oxidative stress. Lycopene, a carotenoid, has been shown to have protective effect in neurological disease models due to antioxidant activity, but its effect on AsO-induced neurotoxicity is not identified yet. The aim of this study is to investigate the effects of lycopene on AsO-induced neuronal damage and the related mechanisms. Read More

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Preventive effect of Bacillus mojavensis levan against carbon tetrachloride and cisplatin toxicity: in vivo study.

Environ Sci Pollut Res Int 2021 May 5. Epub 2021 May 5.

Laboratory of Plants Improvement and Valorization of Agroressources, National School of Engineering of Sfax (ENIS), University of Sfax, 3038, Sfax, Tunisia.

This study is the first to investigate the hepato- and nephron-preventive effect of levan from Bacillus mojavensis (BM-levan) against toxicity induced by carbon tetrachloride (CCl) and cisplatin. Thirty-six male albino rats weighing between 230 and 250 g were used for this experiment. The groups received multiples doses of BM-levan and were compared to the untreated group. Read More

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Chlorogenic acid induces ROS-dependent apoptosis in Fusarium fujikuroi and decreases the postharvest rot of cherry tomato.

World J Microbiol Biotechnol 2021 May 5;37(6):93. Epub 2021 May 5.

School of Food and Biological Engineering, Hefei University of Technology, Anhui Province, Hefei, 230601, China.

Chlorogenic acid is a plant polyphenol with antioxidant and antimicrobial activities. Fusarium fujikuroi is a fungal pathogen that causes many vegetables and fruits, including tomato, to rot. The effects of chlorogenic acid on the development of Fusarium rot of cherry tomato fruit were examined in the present study. Read More

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Effect of pretreatment and temperature on the drying kinetics and physicochemical and techno-functional characteristics of pumpkin ().

Heliyon 2021 Apr 16;7(4):e06802. Epub 2021 Apr 16.

Universidad Nacional de Colombia, Facultad de Ciencias Agrarias, Departamento de Ingeniería Agrícola y Alimentos, Medellín, Colombia.

The study was carried out to assess fresh slices and thermally pretreated pumpkin () dried at temperatures of 55 °C, 60 °C, 65 °C, and 70 °C. The drying kinetics and quality attributes of the dried product were determined, and results indicated that the modified Page model was the best fit, with activation energies of 29.47 kJ mol and 16. Read More

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Biogenic zinc-oxide nanoparticles of leaves abrogates rotenone induced neuroendocrine toxicity by regulation of oxidative stress and acetylcholinesterase activity.

Biochem Biophys Rep 2021 Jul 17;26:100999. Epub 2021 Apr 17.

Department of Mathematical and Physical Science, Faculty of Science, Osun State University, Oshogbo, Nigeria.

Zinc oxide nanoparticles (ZnONPs) from plant origin were postulated to regulate complex hormonal control through the hypothalamus- pituitary-testicular axis and somatic cells due to their unique small size and effective drug delivery to target tissues. This study therefore investigates the biogenic synthesis of zinc oxide nanoparticles (ZnO NPs) from leaves on key endocrine hormones (LH, FSH and testosterone), MDA level, antioxidant enzymes (SOD and CAT), acetylcholineesterase (AChE) activity and reactive nitrogen species (NO) level in rotenone induced male rat. The animals were divided into six groups (n = 8). Read More

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Selenium nanoparticles: Synthesis, cytotoxicity, antioxidant activity and interaction studies with ct-DNA and HSA, HHb and Cyt c serum proteins.

Biotechnol Rep (Amst) 2021 Jun 15;30:e00615. Epub 2021 Apr 15.

Center of Medical Biology Research, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.

The aim of this study was the synthesis of selenium nanoparticles (SeNPs) employing vitamin C as a biocompatible and low toxic reducing agent. The synthesized selenium nanoparticles were characterized by using UV-vis, FT-IR, SEM-EDX, TEM, DLS, and zeta potential measurements. The results of the DPPH free radical scavenging assay demonstrate that this synthesized nano-selenium has strong potentials to scavenge the free radicals and cytotoxicity against MCF-7 and Raji Burkitt's lymphoma cancer cell lines. Read More

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Controlled bacteriostasis of tea polyphenol loaded ultrahigh molecular weight polyethylene with high crosslink density and oxidation resistance for total joint replacement.

Mater Sci Eng C Mater Biol Appl 2021 May 24;124:112040. Epub 2021 Mar 24.

College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Chengdu, China.

To avoid catastrophic bacterial infection in prosthesis failure, ultrahigh molecular weight polyethylene (UHMWPE), a common bearing material of artificial joints, has been formulated with antibiotics to eliminate bacteria locally at the implant site. However, the pressing issues regarding cytotoxic effects and evolution of drug resistant bacteria necessitates the development of bio-friendly bacteriostat with long bacteriostatic efficacy. Herein, tea polyphenol extracted from nature source was introduced in UHMWPE as a biogenic antimicrobial. Read More

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Maternal exercise during pregnancy modulates mitochondrial function and redox status in a sex-dependent way in adult offspring's skeletal muscle.

J Dev Orig Health Dis 2021 May 5:1-8. Epub 2021 May 5.

Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.

Maternal exercise has shown beneficial effects on mother and child. Literature confirm progeny's cognition improvement, and upregulation in neurotrophins, antioxidant network, and DNA repair system. Considering that there is a lack of information demonstrating the impact of maternal exercise on offspring's skeletal muscle, we aimed to investigate the mitochondrial and redox effects elicited by maternal swimming. Read More

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Genetically-determined variations of are associated with antioxidant, muscular, and lipid biomarkers in response to Brazil nut consumption by patients using statins.

Br J Nutr 2021 May 5:1-21. Epub 2021 May 5.

Department of Health Sciences, Division of Nutrition and Metabolism, Ribeirão Preto Medical School, University of São Paulo - FMRP/USP, Brazil.

Several single nucleotide polymorphisms (SNPs) could indirectly, as well directly, influence metabolic parameters related to health effects in response to selenium (Se) supplementation. This study aimed to investigate whether the selenoprotein SNPs were associated with the response of Se status biomarkers to the Brazil nut consumption in patients using statins, and if the variation in Se homeostasis could affect antioxidant protection, lipid profile, muscle homeostasis, and selenoproteins mRNA. The study was performed in the Ribeirão Preto Medical School University Hospital. Read More

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High-Pressure Processing and Ultrasonication of Minimally Processed Potatoes: Effect on the Colour, Microbial Counts, and Bioactive Compounds.

Molecules 2021 Apr 29;26(9). Epub 2021 Apr 29.

Department of Food BioSciences, Teagasc Food Research Centre Ashtown, D15 KN3K Dublin5, Ireland.

HPP at 600 MPa alone, and in combination with US at 20 kHz (200 W), was applied to minimally processed potatoes of two commonly grown cultivars in Ireland. Changes in colour and microbial load (, total aerobic count, , yeasts, and moulds) were monitored in vacuum-packaged potatoes during 14 days of storage at 4 °C. HPP and HPP/US significantly ( < 0. Read More

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Optimising the DPPH Assay for Cell-Free Marine Microorganism Supernatants.

Mar Drugs 2021 Apr 29;19(5). Epub 2021 Apr 29.

Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Korea.

Antioxidants prevent ageing and are usually quantified and screened using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. However, this assay cannot be used for salt-containing samples, such as the cell-free supernatants of marine microorganisms that are aggregated under these conditions. Herein, the DPPH solvent (methanol or ethanol) and its water content were optimized to enable the analysis of salt-containing samples, aggregation was observed for alcohol contents of >70%. Read More

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Sequential Changes in Antioxidant Potential of Oakleaf Lettuce Seedlings Caused by Nano-TiO Treatment.

Nanomaterials (Basel) 2021 Apr 29;11(5). Epub 2021 Apr 29.

Crop Physiology, Department of Plant Eco-Physiology, Faculty of Agriculture, University of Tabriz, Tabriz 5166616471, Iran.

Nowadays, there is an increasing interest in nanoparticle (NP) technology used in household and industrial products. It could cause an accumulation and dispersion of NPs in the environment, with possible harmful effects on living organisms. Nanoparticles significantly affect plants and alter their physiology and biochemical pathways, and nanotechnology can be used to improve plant characteristics that are desirable by humans. Read More

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