Article
Biochemistry & Molecular Biology
Jessica Rumpf, Rene Burger, Margit Schulze
Summary: This research investigates four different assays to determine the antioxidant capacity of standard substances, organosolv lignins, and kraft lignins. The lowest variation was found in the ABTS assay, while the highest was found in the DPPH assay. The FRAP and FC assays show the best correlation and indicate a single electron transfer mechanism, while DPPH has a different reaction mechanism. Lignins from different sources possess different antioxidant capacities and can be used in various applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Food Science & Technology
Joanna Brzezinska-Rojek, Svitlana Sagatovych, Paulina Malinowska, Kamila Gadaj, Magdalena Prokopowicz, Malgorzata Grembecka
Summary: Due to their high bioactive substance content, beetroot and its preserves have the potential to be a valuable part of a balanced diet. However, research on the antioxidant capacity and nitrate content of beetroot-based dietary supplements (DSs) is limited worldwide. In this study, the total antioxidant capacity, total phenolic content, nitrites, and nitrates content were measured in fifty DSs and twenty beetroot samples using various methods. The results showed that fresh beetroot contains significantly higher levels of antioxidants, nitrites, and nitrates compared to most DSs. The safety of the products was also evaluated, and it was found that many DSs did not comply with labeling requirements. This highlights the need for stricter regulation of DSs, as their consumption could be potentially harmful.
Article
Biochemistry & Molecular Biology
Oscar Vidal-Casanella, Javier Moreno-Merchan, Merce Granados, Oscar Nunez, Javier Saurina, Sonia Sentellas
Summary: This study estimated the total polyphenol content and antioxidant capacity in various food and nutraceutical samples using antioxidant assays and chromatographic analysis. The results showed that HPLC fingerprints were suitable for classifying samples based on their nature, and the chromatographic data were correlated with antioxidant data. Regression models based on chromatographic data demonstrated good prediction capacities in estimating the antioxidant activity.
Article
Chemistry, Physical
Chengyi Hong, Lingling Chen, Jiayi Huang, Yunling Shen, Hongfen Yang, Zhiyong Huang, Ren Cai, Weihong Tang
Summary: A visual colorimetric detection strategy using gold nanoparticle-decorated MoSe2 nanosheets (Au@MoSe2) as catalysts is reported for total antioxidant capacity (TAC) assay. The method demonstrates high sensitivity for ascorbic acid (AA) detection based on the inhibition effect on chromogenic substrate oxidation. The proposed method also shows potential for TAC assay in evaluating antioxidant food quality.
Article
Chemistry, Physical
Chengyi Hong, Lingling Chen, Jiayi Huang, Yunling Shen, Hongfen Yang, Zhiyong Huang, Ren Cai, Weihong Tan
Summary: A visual colorimetric detection strategy based on gold nanoparticle-decorated MoSe2 nanosheets was reported for total antioxidant capacity (TAC) assay. This method showed high sensitivity for ascorbic acid (AA) detection and was successfully applied in commercial beverages and vitamin C tablets.
Article
Microbiology
Maja Chochevska, Elizabeta Jancovska Seniceva, Sanja Kostadinovic Velickovska, Galaba Naumova-Letia, Valentin Mirceski, Joao Miguel F. Rocha, Tuba Esatbeyoglu
Summary: The study found that all traditional homemade fruit vinegars had at least 10 times higher antioxidant activity than commercial fruit vinegars. Rose hip homemade vinegar showed the highest antioxidant capacity, while apple and persimmon homemade vinegars had the lowest levels of antioxidants, indicating the importance of fruit type in vinegar production. The use of traditional processes for fruit vinegar production showed promise in producing high-quality vinegars with high levels of health-promoting antioxidant capacities.
Article
Chemistry, Multidisciplinary
Josue Pozo-Martinez, Saleta Vazquez-Rodriguez, Claudio Olea-Azar, Mauricio Moncada-Basualto
Summary: Antioxidant capacity refers to the ability of compounds to react with free radicals and inhibit oxidation processes. This study evaluated the antioxidant capacity of quercetin and synthetic 3-phenylcoumarins through ORAC-FL, PGR, and HPLC techniques. The results showed that the most reactive antioxidant had a dominant effect on the overall antioxidant capacity in the mixture.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Weiyun Guo, Linpin Luo, Ying Nian, Jianlong Wang, Jihong Huang
Summary: A hollow metal organic framework derivative beta-Co(OH)2 with oxidase and peroxidase-like activities was prepared. The pH-responsive enzyme-like activities of beta-Co(OH)2 make it stand out from other nanozymes. Sensors integrating total antioxidant capacity and H2O2 quantification were developed based on the enzyme-like activities of beta-Co(OH)2. The proposed sensors showed high accuracy and satisfactory recovery for antioxidant capacity detection and H2O2 determination.
Review
Engineering, Chemical
Antonio Cano, Ana B. Maestre, Josefa Hernandez-Ruiz, Marino B. Arnao
Summary: ABTS is a widely used compound for determining the total antioxidant capacity (TAC) of various samples. It can be used in different determination methodologies, such as automated photometric measures and liquid chromatographic separation. The ABTS/TAC method allows for the determination of both hydrophilic and lipophilic antioxidant activity, providing total antioxidant activity values. This review highlights the major achievements and applications of the ABTS/TAC method.
Article
Fisheries
Yan Huang, Jianming Xu, Zhengyu Sheng, Naisong Chen, Songlin Li
Summary: Increasing dietary phospholipids significantly improves growth performance of grouper larvae, promotes hepatic lipid deposition, and regulates the synthesis and hydrolysis of triglyceride. In addition, higher phospholipid content in the diet enhances antioxidant capacity.
Article
Reproductive Biology
Ahmed Reda Elkhawagah, Nicola Antonio Martino, Mohamed Mahmoud Moustafa Kandiel, Karima Ghoneimy Mahmoud, Alessandro Ricci, Leila Vincenti
Summary: This study aimed to investigate the effects of cysteamine on the quality of frozen-thawed buffalo semen. The results showed that cysteamine at different concentrations improved sperm motility, viability, morphology, plasma membrane integrity, and reduced oxidative stress. It also had an impact on DNA integrity. However, cysteamine did not affect the in vitro fertilization capacity of the sperm.
Article
Cell Biology
Congying Zheng, Andrew Collins, Gunnar Brunborg, Frederik-Jan van Schooten, Anne Lene Nordengen, Sergey Shaposhnikov, Roger Godschalk
Summary: DNA repair plays a crucial role in cancer development, progression, prognosis, and response to therapy. In this study, a cellular repair assay based on the Fpg-modified comet assay was used to evaluate DNA repair kinetics. The removal of oxidized nucleobases over time was analyzed in peripheral blood mononuclear cells (PBMCs) and 8 cell lines. DNA damage was induced by exposure to Ro19-8022 plus visible light or potassium bromate (KBrO3). The results showed a fast initial removal of Fpg-sensitive sites followed by slower removal over time.
CELL BIOLOGY AND TOXICOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Riccardo Goldoni, Douglas Vieira Thomaz, Lucanos Strambini, Margherita Tumedei, Paola Dongiovanni, Gaetano Isola, Gianluca Tartaglia
Summary: Oxidative stress causes cell damage and diseases, but antioxidants can prevent reactive species production. Saliva is a promising biofluid for studying diseases and overall health. A low-cost sensor based on cerium oxide nanoparticles was developed to assess antioxidant capacity in biofluids, offering an alternative to traditional methods. The sensor showed satisfactory sensitivity and linearity in the range of clinical interest for saliva, and was validated against state-of-the-art equipment for antioxidant capacity evaluation.
Article
Agronomy
Qingyu Sun, Haiming Yang, Jun Yu, Jingru Liang, Xuean Xu, Zhiyue Wang
Summary: This experiment investigated the effects of different dietary levels of vitamin E on the growth, immunity, and antioxidant capacity of goslings. The results showed that dietary supplementation with vitamin E improved the growth performance, immunity, and antioxidant capacity of the goslings.
Article
Nanoscience & Nanotechnology
Yan-Wen Mao, Jia-Qi Li, Rui Zhang, Ai-Jun Wang, Jiu-Ju Feng
Summary: In this study, nitrogen-doped carbon nanoflowers decorated with PtNi nanoparticles (PtNi/NCFs) were successfully fabricated. The PtNi/NCFs exhibited high peroxidase-mimicking activity for catalyzing TMB oxidation in the H2O2 system. A visual colorimetric sensor was developed using PtNi/NCFs nanozyme to detect H2O2 and AA, with low limits of detection and wide linear ranges. This sensor was also applied for the detection of AA and H2O2 in real tablets and juices, showing great potential for practical applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Agriculture, Multidisciplinary
Clemens Kanzler, Paul T. Haase, Helena Schestkowa, Lothar W. Kroh
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2016)
Article
Agriculture, Multidisciplinary
Paul T. Haase, Clemens Kanzler, Julia Hildebrandt, Lothar W. Kroh
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2017)
Article
Agriculture, Multidisciplinary
Clemens Kanzler, Helena Schestkowa, Paul T. Haase, Lothar W. Kroh
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2017)
Article
Chemistry, Applied
Ghassan Faisal Mohsin, Franz-Josef Schmitt, Clemens Kanzler, Jan Dirk Epping, Sabine Flemig, Andrea Hornemann
Article
Chemistry, Applied
Ghassan Faisal Mohsin, Franz-Josef Schmitt, Clemens Kanzler, Arne Hoehl, Andrea Horneman
Article
Agriculture, Multidisciplinary
Philipp Bruhns, Clemens Kanzler, Andreas G. Degenhardt, Timo J. Koch, Lothar W. Kroh
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2019)
Article
Agriculture, Multidisciplinary
Clemens Kanzler, Paul T. Haase
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2020)
Article
Biochemistry & Molecular Biology
Sandra Grebenteuch, Clemens Kanzler, Stefan Klaussnitzer, Lothar W. Kroh, Sascha Rohn
Summary: Lipid oxidation and volatile organic compounds are the main factors affecting food quality, with methyl ketones identified as aroma-active substances in various foods. The formation of methyl ketones is influenced by precursor compounds, amino compounds, and processing temperatures.
Article
Nutrition & Dietetics
Gabriela Kowalska, Justyna Rosicka-Kaczmarek, Karolina Miskiewicz, Malgorzata Zaklos-Szyda, Sascha Rohn, Clemens Kanzler, Magdalena Wiktorska, Jolanta Niewiarowska
Summary: The aim of this research was to develop innovative systems for controlled release of bioactive compounds using bioactive heteropolysaccharides from rye bran. The study revealed that microcapsules containing honey and royal jelly effectively reduced inflammatory response and had sustained ability to reduce inflammation state mediators. The microcapsules showed higher biostability and bioavailability compared to natural bee products during in vitro digestion process.
Article
Biochemistry & Molecular Biology
Leon Valentin Bork, Sascha Rohn, Clemens Kanzler
Summary: This study investigated the heat-induced reactions of phenolic compounds under dry conditions. The results showed that decarboxylation played a major role in color formation and the reaction products contributed to the antioxidant properties of the model systems. These oligomers could be incorporated into food melanoidins, enhancing the color and antioxidant properties of phenolic-rich roasted food.
Article
Food Science & Technology
Clemens Kanzler, Paul T. Haase, Lothar W. Kroh
DEUTSCHE LEBENSMITTEL-RUNDSCHAU
(2016)
