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https://www.readbyqxmd.com/read/28231699/optimization-of-ultrasonic-assisted-enzymatic-hydrolysis-conditions-for-the-production-of-antioxidant-hydrolysates-from-porcine-liver-by-using-response-surface-methodology
#1
Hui-Chuan Yu, Fa-Jui Tan
Objective: The objective of this study was to optimize ultrasonic-assisted enzymatic hydrolysis conditions, including enzyme-to-substrate (E/S) ratio, pH, and temperature, for producing porcine liver hydrolysates (PLHs) with the highest 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity by using response surface methodology (RSM). Methods: The study used RSM to determine the combination of hydrolysis parameters that maximized the antioxidant activity of our PLHs...
February 23, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28231693/native-plants-p-amurense-and-h-japonicus-extracts-act-as-antioxidants-to-support-developmental-competence-of-bovine-blastocysts
#2
Geon-Yeop Do, Jin-Woo Kim, Hyo-Jin Park, Seung-Bin Yoon, Jae-Young Park, Seul-Gi Yang, Bae Dong Jung, Yong-Soo Kwon, Man-Jong Kang, Bong-Seok Song, Sun-Uk Kim, Kyu-Tae Chang, Deog-Bon Koo
Objective: Phellodendron amurense (P. amurense) and Humulus japonicus (H. japonicus) are closely involved in anti-oxidative response and increasing antioxidant enzymes activities. However, the effects of their extracts on development of preimplantation bovine embryos have not yet been investigated. Therefore, we investigated the effects of P. amurense and H. japonicus extract on developmental competence and quality of preimplantation bovine embryos. Methods: After in vitro fertilization, bovine embryos were cultured for 7 days in CR1aa medium supplemented with P...
February 23, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28231558/alleviating-effects-of-calcium-on-cobalt-toxicity-in-two-barley-genotypes-differing-in-cobalt-tolerance
#3
Jonas Lwalaba Wa Lwalaba, Gerald Zvobgo, Liangbo Fu, Xuelei Zhang, Theodore Mulembo Mwamba, Noor Muhammad, Robert Prince Mukobo Mundende, Guoping Zhang
Cobalt (Co) contamination in soils is becoming a severe issue in environment safety and crop production. Calcium (Ca)(,) as a macro-nutrient element, shows the antagonism with many divalent heavy metals and the capacity of alleviating oxidative stress in plants. In this study, the protective role of Ca in alleviating Co stress was hydroponically investigated using two barley genotypes differing in Co toxicity tolerance. Barley seedlings exposed to 100µM Co showed the significant reduction in growth and photosynthetic rate, and the dramatic increase in the contents of reactive oxygen species (ROS), malondialdehyde (MDA), reduced glutathione (GSH) and oxidized glutathione (GSSG), and the activities of anti-oxidative enzymes, with Ea52 (Co-sensitive) being much more affected than Yan66 (Co-tolerant)...
February 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28231545/aqueous-extract-of-cortex-dictamni-protects-h9c2-cardiomyocytes-from-hypoxia-reoxygenation-induced-oxidative-stress-and-apoptosis-by-pi3k-akt-signaling-pathway
#4
Lin Li, Yunfeng Zhou, Yanlin Li, Lili Wang, Lan Sun, Lidong Zhou, Hiderori Arai, Yun Qi, Yang Xu
Ischemia-reperfusion injury is the major manifestation of ischemic heart disease, which facilitates cardiac arrhythmias, heart failure and death. Oxidative stress and apoptosis have been involved in the pathogenesis of myocardial ischemia-reperfusion injury. Modern pharmacological studies have indicated that the extracts and active compounds of Cortex Dictamni exhibit antioxidative and cardiovascular protective activities. This study was designed to investigate the protective effect of aqueous extract of Cortex Dictamni (CDAE) on regulating hypoxia/reoxygenation (H/R)-induced cardiomyocytes oxidative stress and apoptosis...
February 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28231542/in-vitro-biocompatibility-and-proliferative-effects-of-polar-and-non-polar-extracts-of-cucurbita-ficifolia-on-human-mesenchymal-stem-cells
#5
Balakrishnan Aristatile, Ghedeir M Alshammari
Cucurbita ficifolia (C. ficifolia) has been traditionally known for its medicinal properties as an antioxidant, anti-diabetic and anti-inflammatory agent. However, there has been an enduring attention towards the identification of unique method, to isolate the natural components for therapeutic applications. Our study focuses on different polar and non-polar solvents (methanol, hexane and chloroform) to extract the bioactive components from C. ficifolia (pumpkin) and to study the biocompatibility and cytotoxicity effects on human bone marrow-mesenchymal stem cells (hBM-MSCs)...
February 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28231513/increasing-ascorbate-levels-in-crops-to-enhance-human-nutrition-and-plant-abiotic-stress-tolerance
#6
REVIEW
Richard C Macknight, William A Laing, Sean M Bulley, Ronan C Broad, Alexander At Johnson, Roger P Hellens
Ascorbate (or vitamin C) is an essential human micronutrient predominantly obtained from plants. In addition to preventing scurvy, it is now known to have broader roles in human health, for example as a cofactor for enzymes involved in epigenetic programming and as regulator of cellular iron uptake. Furthermore, ascorbate is the major antioxidant in plants and underpins many environmentally induced abiotic stress responses. Biotechnological approaches to enhance the ascorbate content of crops therefore have potential to improve both human health and abiotic stress tolerance of crops...
February 20, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28231504/effect-of-biochar-on-cadmium-bioavailability-and-uptake-in-wheat-triticum-aestivum-l-grown-in-a-soil-with-aged-contamination
#7
Tahir Abbas, Muhammad Rizwan, Shafaqat Ali, Muhammad Zia-Ur-Rehman, Muhammad Farooq Qayyum, Farhat Abbas, Fakhir Hannan, Jörg Rinklebe, Yong Sik Ok
Cadmium (Cd) is a well-known and widespread toxic heavy metal while the effects of biochar (BC) on Cd bioavailability and toxicity in wheat, especially in soils with aged contamination are largely unknown. In the present study, the effect of rice straw BC on Cd immobilization in soil and uptake by wheat in an agricultural contaminated-soil was investigated. Different levels of rice straw BC (0%, 1.5%, 3.0% and 5% w/w) were incorporated into the soil and incubated for two weeks. After this, wheat plants were grown in the amended soil until maturity...
February 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28231483/a-novel-redox-regulator-mntnbuoe-2-pyp-5-enhances-normal-hematopoietic-stem-progenitor-cell-function
#8
Y Zhao, D W Carroll, Y You, L Chaiswing, R Wen, I Batinic-Haberle, S Bondada, Y Liang, D K St Clair
The signaling of reactive oxygen species (ROS) is essential for the maintenance of normal cellular function. However, whether and how ROS regulate stem cells are unclear. Here, we demonstrate that, in transgenic mice expressing the human manganese superoxide dismutase (MnSOD) gene, a scavenger of ROS in mitochondria, the number and function of mouse hematopoietic stem/progenitor cells (HSPC) under physiological conditions are enhanced. Importantly, giving MnTnBuOE-2-PyP(5+)(MnP), a redox- active MnSOD mimetic, to mouse primary bone marrow cells or to C57B/L6 mice significantly enhances the number of HSPCs...
February 10, 2017: Redox Biology
https://www.readbyqxmd.com/read/28231454/zinc-complexes-of-diflunisal-synthesis-characterization-structure-antioxidant-activity-and-in-vitro-and-in-silico-study-of-the-interaction-with-dna-and-albumins
#9
Alketa Tarushi, Chrisoula Kakoulidou, Catherine P Raptopoulou, Vassilis Psycharis, Dimitris P Kessissoglou, Ioanna Zoi, Athanasios N Papadopoulos, George Psomas
From the reaction of ZnCl2 with the non-steroidal anti-inflammatory drug diflunisal (Hdifl), complex [Zn(difl-O)2(MeOH)4], 1 was formed, while in the presence of a N,N'-donor heterocyclic ligand 2,2'-bipyridylamine (bipyam), 2,2'-bipyridine (bipy), 1,10-phenanthroline (phen) and 2,2'-dipyridylketone oxime (Hpko), the complexes [Zn(difl-O,O')2(bipyam)], 2, [Zn(difl-O,O')2(bipy)], 3, [Zn(difl-O,O')2(phen)], 4 and [Zn(difl-O)2(Hpko)2], 5 were isolated, respectively. The complexes were characterized by physicochemical and spectroscopic techniques and the crystal structures of complexes 2, 3 and 5 were determined by X-ray crystallography...
February 12, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28231438/lipid-and-protein-antioxidant-capacity-of-dried-agaricus-bisporus-in-salted-cooked-ground-beef
#10
Hatouf Alnoumani, Zeynep Akyol Ataman, Lilian Were
Dried Agaricus bisporus powder (DAB)'s antioxidant capacity was tested in refrigerated cooked ground beef (CGB) containing 0, 1 or 1.5% NaCl. Lipid and protein oxidation products were monitored over time and correlated with changes in phenolic content. On day 16, 88-94% lower malondialdehyde (MDA) was found in CGB with DAB compared to control (1.15mg MDA/kg samples). Volatile aldehydes were up to 99% lower on day 16 in CGB with DAB than controls. In unsalted CGB, thiols dropped by 82% in control compared to <60% in CGB with DAB...
February 16, 2017: Meat Science
https://www.readbyqxmd.com/read/28231393/effects-of-tissue-culture-and-mycorrhiza-applications-in-organic-farming-on-concentrations-of-phytochemicals-and-antioxidant-capacities-in-ginger-zingiber-officinale-roscoe-rhizomes-and-leaves
#11
Byungrok R Min, Lurline E Marsh, Keegan Brathwaite, Adebola O Daramola
Tissue culture and mycorrhiza applications can provide disease-free seedlings and enhanced nutrient absorption, respectively, for organic farming. Ginger (Zingiber officinale Roscoe) is rich in phytochemicals and has various health-protective potentials. This study was aimed at determining effects of tissue culture and mycorrhiza applications alone or in combinations in organic farming on phytochemical contents (total phenolics and flavonoids [TP and TF, respectively], gingerol and shogaol homologues, phenolic acids, and carotenoids) and antioxidant capacities (DPPH [2,2-diphenyl-1-picrylhydrazyl] radical scavenging, oxygen radical absorbance (ORAC), and iron-chelating capacities [ICC]) in solvent-extractable (Free) and cell-wall-matrix-bound (Bound) fractions of ginger rhizome and Free fraction of the leaves in comparison with non-organics...
February 23, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28231330/the-effects-of-exogenous-hormones-on-rooting-process-and-the-activities-of-key-enzymes-of-malus-hupehensis-stem-cuttings
#12
Wangxiang Zhang, Junjun Fan, Qianqian Tan, Mingming Zhao, Ting Zhou, Fuliang Cao
Malus hupehensis is an excellent Malus rootstock species, known for its strong adverse-resistance and apomixes. In the present study, stem cuttings of M. hupehensis were treated with three types of exogenous hormones, including indole acetic acid (IAA), naphthalene acetic acid (NAA), or green growth regulator (GGR). The effects and mechanisms of exogenous hormone treatment and antioxidant enzyme activity on adventitious root formation were investigated. The results showed that the apparent morphology of the adventitious root had four stages, including root pre-emergence stage (S0), early stage of root formation (S1), massive root formation stage (S2), and later stage of root formation (S3)...
2017: PloS One
https://www.readbyqxmd.com/read/28231175/mushroom-polysaccharides-chemistry-and-antiobesity-antidiabetes-anticancer-and-antibiotic-properties-in-cells-rodents-and-humans
#13
REVIEW
Mendel Friedman
More than 2000 species of edible and/or medicinal mushrooms have been identified to date, many of which are widely consumed, stimulating much research on their health-promoting properties. These properties are associated with bioactive compounds produced by the mushrooms, including polysaccharides. Although β-glucans (homopolysaccharides) are believed to be the major bioactive polysaccharides of mushrooms, other types of mushroom polysaccharides (heteropolysaccharides) also possess biological properties. Here we survey the chemistry of such health-promoting polysaccharides and their reported antiobesity and antidiabetic properties as well as selected anticarcinogenic, antimicrobial, and antiviral effects that demonstrate their multiple health-promoting potential...
November 29, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231174/optimization-of-ultrasound-assisted-extraction-preliminary-characterization-and-in-vitro-antioxidant-activity-of-polysaccharides-from-green-pea-pods
#14
Maryam Jalili Safaryan, Ali Ganjloo, Mandana Bimakr, Soheila Zarringhalami
In this study, ultrasound-assisted extraction of green pea pod polysaccharide (GPPP) was investigated and optimized using a central composite response surface design coupled with a numerical optimization technique. The effects of ultrasonic power (50-150 W), sonication time (20-80 min), ratio of water to raw material (20:1-40:1 mL/g) and extraction temperature (40-80 °C) on polysaccharide extraction yield were studied. The maximum extraction yield was obtained with a sonication power of 135.34 W, extraction time of 48...
November 28, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231162/phenolic-pro%C3%AF-le-and-antioxidant-activity-of-melon-cucumis-melo-l-seeds-from-pakistan
#15
Alam Zeb
Phenolic composition of different extracts of honeydew melon seeds and their antioxidant activity was determined for the first time. Phenolic compounds were identified using a reversed phase high performance liquid chromatography with diode array detection (HPLC-DAD) method. Results showed the identification of five phenolic compounds in water extract namely gallic acid and its derivative, hydroxybenzoic acid and catechin derivatives and caffeic acid.There were nine phenolic compounds identified in methanol-water extract, which are caffeic acid, two vanillic acid derivatives, ellagitanins, quercetin-3-rutinoside, derivatives of syringic acid and ellagic acid...
October 17, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231159/comparison-of-the-proximate-composition-total-carotenoids-and-total-polyphenol-content-of-nine-orange-fleshed-sweet-potato-varieties-grown-in-bangladesh
#16
Mohammad Khairul Alam, Ziaul Hasan Rana, Sheikh Nazrul Islam
In an attempt to develop the food composition table for Bangladesh, the nutritional composition of nine varieties of orange-fleshed sweet potato was analyzed together with total carotenoids (TCC) and total polyphenol content (TPC). Each variety showed significant variation in different nutrient contents. The quantification of the TCC and TPC was done by spectrophotometric measurement, and the proximate composition was done by the AOAC method. The obtained results showed that total polyphenol content varied from 94...
September 14, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231158/irradiation-maintains-functional-components-of-dry-hot-peppers-capsicum-annuum-l-under-ambient-storage
#17
Qumer Iqbal, Muhammad Amjad, Muhammad Rafique Asi, Aamir Nawaz, Samiya Mahmood Khan, Agustin Ariño, Tanveer Ahmad
Hot peppers used as natural flavoring and coloring agents are usually irradiated in prepacked form for decontamination. The effects of gamma radiation on the stability of functional components such as capsaicinoids and antioxidant compounds (carotenoids, ascorbic acid and total phenolics) were investigated in hot peppers (Capsicum annuum). Whole dried peppers packed in polyethylene bags were gamma irradiated at 0 (control), 2, 4, and 6 kGy and subsequently stored at 25 °C for 90 days. The irradiation dose did not substantially affect the initial contents of capsaicinoids, ascorbic acid and total phenolics, though the concentration of carotenoids declined by 8% from the control (76...
September 12, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231157/breads-fortified-with-freeze-dried-vegetables-quality-and-nutritional-attributes-part-ii-breads-not-containing-oil-as-an-ingredient
#18
Viren Ranawana, Fiona Campbell, Charles Bestwick, Phyllis Nicol, Lesley Milne, Garry Duthie, Vassilios Raikos
The present article describes the second part of a study investigating the effect of adding vegetables on the nutritional, physico-chemical, and oxidative properties of wheat bread, and specifically focuses on bread that does not contain oil as an added ingredient. Wheat flour breads fortified with freeze-dried carrot, tomato, beetroot or broccoli were developed and assessed for their nutritional composition, antioxidant potential, oxidative stability, and storage properties. Using a simulated in vitro model, the study also examined the impact of vegetable addition on the oxidative stability of macronutrients during gastro-intestinal digestion...
September 8, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231150/enhancing-the-total-phenolic-content-and-antioxidants-of-lemon-pomace-aqueous-extracts-by-applying-uv-c-irradiation-to-the-dried-powder
#19
Konstantinos Papoutsis, Quan V Vuong, Penta Pristijono, John B Golding, Michael C Bowyer, Christopher J Scarlett, Costas E Stathopoulos
Several studies have shown that UV-C (ultraviolet C) irradiation promotes the bioactive compounds and antioxidants of fresh fruits and vegetables. The aim of this study was to apply UV irradiation in dried lemon pomace powder for enhancing its phenolic content and antioxidant properties, thus more bioactive compounds should be available for extraction and utilization. Lemon pomace dried powder was placed under a UV lamp and treated with dosages of 4, 19, 80 and 185 kJ·m(-2), while untreated powder was used as a control...
August 23, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231123/antibacterial-and-antioxidant-activities-of-essential-oils-from-artemisia-herba-alba-asso-pelargonium-capitatum-%C3%A3-radens-and-laurus-nobilis-l
#20
Ragina Rafiq, Saeed A Hayek, Ugochukwu Anyanwu, Bonita I Hardy, Valerie L Giddings, Salam A Ibrahim, Reza Tahergorabi, Hye Won Kang
Essential oils are natural antimicrobials that have the potential to provide a safer alternative to synthetic antimicrobials currently used in the food industry. Therefore, the aim of this study was to evaluate the antimicrobial and antioxidant activities of essential oils from white wormwood, rose-scented geranium and bay laurel against Salmonella typhimurium and Escherichia coli O157:H7 on fresh produce and to examine consumer acceptability of fresh produce treated with these essential oils. Our results showed that essential oil derived from rose-scented geranium exhibited the most effective antimicrobial activity at the same and similar minimum inhibition concentration levels (0...
April 11, 2016: Foods (Basel, Switzerland)
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