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https://www.readbyqxmd.com/read/28930173/polyphenols-from-root-tubercles-and-grains-cropped-in-brazil-chemical-and-nutritional-characterization-and-their-effects-on-human-health-and-diseases
#1
REVIEW
Diego Dos Santos Baião, Cyntia Silva de Freitas, Laidson Paes Gomes, Davi da Silva, Anna Carolina N T F Correa, Patricia Ribeiro Pereira, Eduardo Mere Del Aguila, Vania Margaret Flosi Paschoalin
Throughout evolution, plants have developed the ability to produce secondary phenolic metabolites, which are important for their interactions with the environment, reproductive strategies and defense mechanisms. These (poly)phenolic compounds are a heterogeneous group of natural antioxidants found in vegetables, cereals and leguminous that exert beneficial and protective actions on human health, playing roles such as enzymatic reaction inhibitors and cofactors, toxic chemicals scavengers and biochemical reaction substrates, increasing the absorption of essential nutrients and selectively inhibiting deleterious intestinal bacteria...
September 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28918160/shopping-for-food-with-children-a-strategy-for-directing-their-choices-toward-novel-foods-containing-vegetables
#2
Xavier Allirot, Edurne Maiz, Elena Urdaneta
Involving children in the different steps of meal preparation has been suggested as a strategy for enhancing dietary habits in childhood. It has previously been shown that involving children in cooking can increase their willingness to taste novel foods and direct their food choices towards foods containing vegetables. The objective of the present study was to assess the effect of involving children in food purchasing on food choices, intake, liking and appetite. A between-subject experiment was conducted with 86 children (from 8 to 10 years old)...
September 13, 2017: Appetite
https://www.readbyqxmd.com/read/28916479/dietary-nitrate-increases-vo2peak-and-performance-but-does-not-alter-ventilation-or-efficiency-in-patients-with-heart-failure-with-reduced-ejection-fraction
#3
Andrew R Coggan, Seth R Broadstreet, Kiran Mahmood, Deana Mikhalkova, Michael Madigan, Indra Bole, Soo Park, Joshua L Leibowitz, Ana Kadkhodayan, Deepak P Thomas, Dakkota Thies, Linda R Peterson
BACKGROUND: Patients with heart failure with reduced ejection fraction (HFrEF) exhibit lower efficiency, dyspnea, and diminished peak O2 uptake (VO2peak) during exercise. Dietary nitrate (NO3(-)), a source of nitric oxide (NO), has improved these measures in some studies of other populations. We determined the effects of acute NO3(-) ingestion on exercise responses in eight patients with HFrEF using a randomized, double-blind, placebo-controlled, crossover design. METHODS AND RESULTS: Plasma NO3(-), nitrite (NO2(-)), and breath NO were measured at multiple time points and respiratory gas exchange was determined during exercise after ingestion of beetroot juice containing or devoid of 11...
September 12, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28783446/dietary-nitrate-supplementation-does-not-improve-cycling-time-trial-performance-in-the-heat
#4
Georgina L Kent, Brian Dawson, Gregory R Cox, Louise M Burke, Annette Eastwood, Kevin D Croft, Peter Peeling
This investigation examined the effect of beetroot juice (BR) supplementation, a source of dietary nitrate (NO3(-)), on cycling time-trial (TT) performance and thermoregulation in the heat. In a double-blind, repeated-measures design, 12 male cyclists (age 26.6 ± 4.4 years, VO2peak 65.8 ± 5.5 mL.kg(-1).min(-1)) completed four cycling TTs (14 kJ.kg(-1)) in hot (35°C, 48% relative humidity) and euthermic (21°C, 52%) conditions, following 3 days supplementation with BR (6.5 mmol NO3(-) for 2 days and 13 mmol NO3(-) on the final day), or NO3(-)depleted placebo (PLA)...
August 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28782598/physiological-and-performance-effects-of-nitrate-supplementation-during-roller-skiing-in-normoxia-and-normobaric-hypoxia
#5
Linn Nybäck, Caroline Glännerud, Gustav Larsson, Eddie Weitzberg, Oliver Michael Shannon, Kerry McGawley
The present study examined the effects of acute nitrate (NO3(-)) supplementation ingested in the form of concentrated beetroot juice on cross-country roller-ski performance in normoxia (N) and normobaric hypoxia (H). Eight competitive cross-country skiers (five males: age 22 ± 3 years, V·O2max 71.5 ± 4.7 mL kg(-1)·min(-1); three females: age 21 ± 1 years, V·O2max 58.4 ± 2.5 mL kg(-1)·min(-1)) were supplemented with a single dose of NO3(-)-rich beetroot juice (BRJ, ∼13 mmol NO3(-)) or a NO3(-)-depleted placebo (PL, ∼0 mmol NO3(-)) and performed 2 x 6-min submaximal exercise bouts and a 1000-m time-trial (TT) on a treadmill in N (20...
August 4, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28743821/the-effect-of-dietary-nitrate-supplementation-on-the-spatial-heterogeneity-of-quadriceps-deoxygenation-during-heavy-intensity-cycling
#6
Brynmor C Breese, David C Poole, Dai Okushima, Stephen J Bailey, Andrew M Jones, Narihiko Kondo, Tatsuro Amano, Shunsaku Koga
This study investigated the influence of dietary inorganic nitrate (NO3(-)) supplementation on pulmonary O2 uptake (V˙O2) and muscle deoxyhemoglobin/myoglobin (i.e. deoxy [Hb + Mb]) kinetics during submaximal cycling exercise. In a randomized, placebo-controlled, cross-over study, eight healthy and physically active male subjects completed two step cycle tests at a work rate equivalent to 50% of the difference between the gas exchange threshold and peak V˙O2 over separate 4-day supplementation periods with NO3(-)-rich (BR; providing 8...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28740280/process-optimization-of-spray-drying-of-beetroot-juice
#7
Bhupinder Singh, Bahadur Singh Hathan
The aim of this study was to optimize the spray drying process for beetroot juice. Influence of feed flow rate (8, 10 and 11 mL/min), processing temperature (140, 150 and 160 °C) and maltodextrin concentration (20, 25, and 30%) on packed bulk density, moisture content and betalain content of beetroot powder were assessed using response surface methodology. The following optimum process parameters were determined; feed flow rate feed flow rate of 10 mL/min, processing temperature of 149 °C and maltodextrin concentration of 20%...
July 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28729921/an-outbreak-of-foodborne-norovirus-gastroenteritis-linked-to-a-restaurant-in-melbourne-australia-2014
#8
Shaun P Coutts, Kaye Sturge, Karin Lalor, John A Marshall, Leesa D Bruggink, Nela Subasinghe, Marion Easton
INTRODUCTION: In May 2014 an outbreak of norovirus occurred among patrons of a restaurant in Melbourne, Australia. Investigations were conducted to identify the infectious agent, mode of transmission and source of illness, and to implement controls to prevent further transmission. METHODS: A retrospective case-control study was conducted to test the hypothesis that food served at the restaurant between 9 and 15 May 2014 was the vehicle for infection. A structured questionnaire was used to collect demographic, illness and food exposure data from study participants...
April 2017: Western Pacific Surveillance and Response Journal: WPSAR
https://www.readbyqxmd.com/read/28720962/minimally-processed-beetroot-waste-as-an-alternative-source-to-obtain-functional-ingredients
#9
Anne Porto Dalla Costa, Vanessa Stahl Hermes, Alessandro de Oliveira Rios, Simone Hickmann Flôres
Large amounts of waste are generated by the minimally processed vegetables industry, such as those from beetroot processing. The aim of this study was to determine the best method to obtain flour from minimally processed beetroot waste dried at different temperatures, besides producing a colorant from such waste and assessing its stability along 45 days. Beetroot waste dried at 70 °C originates flour with significant antioxidant activity and higher betalain content than flour produced from waste dried at 60 and 80 °C, while chlorination had no impact on the process since microbiological results were consistent for its application...
June 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28719765/beetroot-juice-is-more-beneficial-than-sodium-nitrate-for-attenuating-muscle-pain-after-strenuous-eccentric-bias-exercise
#10
Tom Clifford, Glyn Howatson, Daniel J West, Emma J Stevenson
The aim of this study was to compare the effects of beetroot juice (BTJ) and a nitrate only drink (sodium nitrate; SN) on indices of exercise-induced muscle damage (EIMD). Thirty recreationally active males consumed either BTJ (n=10), a nitrate matched SN drink (n=10) or an isocaloric placebo (PLA; n=10) immediately, 24 and 48 h after performing 100 drop jumps. To assess muscle damage, maximal isometric voluntary contractions (MIVC), countermovement jumps (CMJ), pressure-pain threshold (PPT), creatine kinase (CK) and high sensitivity C-reactive protein (hs-CRP) were measured pre, immediately post, 24, 48 and 72 h following the drop jumps...
July 18, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28684588/dietary-nitrate-supplementation-increases-acute-mountain-sickness-severity-and-sense-of-effort-during-hypoxic-exercise
#11
Gabriella M K Rossetti, Jamie Hugo Macdonald, Lee J Wylie, Samuel J Little, Victoria Newton, Benjamin Wood, Kieran A Hawkins, Rhys Beddoe, Hannah E Davies, Samuel James Oliver
Dietary nitrate supplementation enhances sea level performance and may ameliorate hypoxemia at high altitude. However, nitrate may exacerbate acute mountain sickness (AMS), specifically headache. This study investigated the effect of nitrate supplementation on AMS symptoms and exercise responses with 6h hypoxia. Twenty recreationally-active men (mean(SD): age 22(4) years, V̇O2max 51(6) mL·min-1·kg-1) completed this randomized double-blinded placebo-controlled crossover study. Twelve participants were classified as AMS- based on Environmental Symptom Questionnaire (AMS-C) score <0...
July 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28670117/dietary-beetroot-juice-effects-on-physical-performance-in-copd-patients-a-randomized-controlled-crossover-trial
#12
Anne Louise Friis, Carina Bjørnskov Steenholt, Anders Løkke, Mette Hansen
BACKGROUND AND OBJECTIVE: Dietary beetroot juice (BR) supplementation has been shown to reduce the oxygen (O2) consumption of standardized exercise and reduce resting blood pressure (BP) in healthy individuals. However, the physiological response of BR in chronic obstructive pulmonary disease (COPD) remains controversial. The objective was to test exercise performance in COPD, supplementing with higher doses of BR for a longer duration compared to previous trials in this patient group...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28649204/effects-of-dietary-nitrate-supplementation-on-physiological-responses-cognitive-function-and-exercise-performance-at-moderate-and-very-high-simulated-altitude
#13
Oliver M Shannon, Lauren Duckworth, Matthew J Barlow, Kevin Deighton, Jamie Matu, Emily L Williams, David Woods, Long Xie, Blossom C M Stephan, Mario Siervo, John P O'Hara
Purpose: Nitric oxide (NO) bioavailability is reduced during acute altitude exposure, contributing toward the decline in physiological and cognitive function in this environment. This study evaluated the effects of nitrate ([Formula: see text]) supplementation on NO bioavailability, physiological and cognitive function, and exercise performance at moderate and very-high simulated altitude. Methods:Ten males (mean (SD): [Formula: see text]: 60.9 (10.1) ml·kg(-1)·min(-1)) rested and performed exercise twice at moderate (~14...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28624090/influence-of-different-drying-methods-on-the-physicochemical-properties-of-red-beetroot-beta-vulgaris-l-var-cylindra
#14
Oana-Viorela Nistor, Liliana Seremet Ceclu, Doina Georgeta Andronoiu, Ludmila Rudi, Elisabeta Botez
There is an increased interest in preserving fruits and vegetables by drying. The novelty of this study consists in the combination of the following three drying methods: free convection (at 50, 60, and 70°C), forced convection at 40°C and 315W microwave power. The aim of this study was to investigate the effects of the drying conditions on red beetroot (Beta vulgaris L.) in terms of betalain variance, and polyphenol, microstructure changes (SEM). A strong thermal shock, provided by convection at 60° followed by microwave wattage 315W/9min, leads to a better preservation of bioactive compounds content (0...
December 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28620796/antioxidant-capacity-of-beetroot-traditional-vs-novel-approaches
#15
Celia Carrillo, Raquel Rey, Marc Hendrickx, María Del Mar Cavia, Sara Alonso-Torre
Red beetroot has been ranked among the 10 most potent antioxidant vegetables, although only extraction-based methods have been used to evaluate its total antioxidant capacity. Therefore, the present study aims at comparing the traditional extraction-based method with two more recent approaches (QUENCHER -QUick, Easy, New, CHEap and Reproducible- and GAR -global antioxidant response method), in order to establish their suitability in the case of beetroot. Our results indicate that the total antioxidant capacity of beetroot would be underestimated when using extraction-based procedures, since both QUENCHER and GAR methods resulted in a higher total antioxidant capacity...
June 15, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28596274/dietary-nitrate-restores-compensatory-vasodilation-and-exercise-capacity-in-response-to-a-compromise-in-oxygen-delivery-in-the-noncompensator-phenotype
#16
Robert F Bentley, Jeremy J Walsh, Patrick J Drouin, Aleksandra Velickovic, Sarah J Kitner, Alyssa M Fenuta, Michael E Tschakovsky
Recently, dietary nitrate supplementation has been shown to improve exercise capacity in healthy individuals through a potential nitrate-nitrite-nitric oxide pathway. Nitric oxide has been shown to play an important role in compensatory vasodilation during exercise under hypoperfusion. Previously, we established that certain individuals lack a vasodilation response when perfusion pressure reductions compromise exercising muscle blood flow. Whether this lack of compensatory vasodilation in healthy, young individuals can be restored with dietary nitrate supplementation is unknown...
September 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28589276/nitrate-in-drinking-water-and-vegetables-intake-and-risk-assessment-in-rural-and-urban-areas-of-nagpur-and-bhandara-districts-of-india
#17
Pinky Taneja, Pawan Labhasetwar, Pranav Nagarnaik
The study focuses on the estimation of health risk from nitrate present in the drinking water and vegetables in Nagpur and Bhandara districts in the state of Maharashtra, India. Drinking water samples from 77 locations from the rural as well as urban areas and 22 varieties of vegetable were collected and analyzed for the presence of nitrate for a period of 1 year (two seasons). The daily intake of nitrate from these water and vegetable samples was then computed and compared with standard acceptable intake levels to assess the associated health risk...
June 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28588603/short-term-effect-of-salt-shock-on-ethylene-and-polyamines-depends-on-plant-salt-sensitivity
#18
Pedro J Zapata, María Serrano, Manuel F García-Legaz, M T Pretel, M A Botella
In the present manuscript the short term effect (3-24 h) of a saline shock (NaCl 100 mM) on fresh weight, water content, respiration rate, ethylene production and Na(+), Cl(-), ACC and polyamine concentration was studied in four plant species with different salt sensitivity, pepper, lettuce, spinach, and beetroot. Higher reduction in fresh weight and water content as a consequence of saline shock was found in pepper and lettuce plants than in spinach and beetroot, the latter behaving as more salinity tolerant...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28562133/dietary-nitrate-does-not-modify-blood-pressure-and-cardiac-output-at-rest-and-during-exercise-in-older-adults-a-randomised-cross-over-study
#19
C Oggioni, D G Jakovljevic, M Klonizakis, A W Ashor, A Ruddock, M Ranchordas, E Williams, M Siervo
Dietary nitrate (NO3(-)) supplementation has been associated with improved vascular and metabolic health. We conducted a double-blind, cross-over, placebo-controlled RCT to investigate the effects of 7-d consumption of beetroot juice compared with placebo on (1) blood pressure (BP) measured in resting conditions and during exercise, (2) cardiac and peripheral vascular function and (3) biomarkers of inflammation, oxidative stress and endothelial integrity. Twenty non-smoking healthy participants aged 60-75 years and BMI 20...
May 31, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28549665/effects-of-supervised-exercise-and-dietary-nitrate-in-older-adults-with-controlled-hypertension-and-or-heart-failure-with-preserved-ejection-fraction
#20
Hossam A Shaltout, Joel Eggebeen, Anthony P Marsh, Peter H Brubaker, Paul J Laurienti, Jonathan H Burdette, Swati Basu, Ashley Morgan, Patricia C Dos Santos, James L Norris, Timothy M Morgan, Gary D Miller, W Jack Rejeski, Amret T Hawfield, Debra I Diz, J Thomas Becton, Daniel B Kim-Shapiro, Dalane W Kitzman
Aerobic exercise training is an effective therapy to improve peak aerobic power (peak VO2) in individuals with hypertension (HTN, AHA/ACC class A) and heart failure patients with preserved ejection fraction (HFpEF). High nitrate containing beetroot juice (BRJ) also improves sub-maximal endurance and decreases blood pressure in both HTN and HFpEF. We hypothesized that combining an aerobic exercise and dietary nitrate intervention would result in additive or even synergistic positive effects on exercise tolerance and blood pressure in HTN or HFpEF...
September 30, 2017: Nitric Oxide: Biology and Chemistry
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