scholarly journals Blood antioxidant nutrients in riparian villagers of the Brazilian Amazon: its associations with wet/dry seasons and modulation by sociodemographic determinants

2016 ◽  
Vol 24 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Juliana Valentini ◽  
Carlos José Sousa Passos ◽  
Solange Cristina Garcia ◽  
Robert Davidson ◽  
Marc Lucotte ◽  
...  
Keyword(s):  
Vitamin E ◽  
Reference Range ◽  
Brazilian Amazon ◽  
Individual State ◽  
River Region ◽  
Baseline Information ◽  
Sociodemographic Determinants ◽  
Dry Seasons ◽  
The Individual ◽  
Β Carotene

Abstract This study associates blood antioxidants like copper (Cu), manganese (Mn), selenium (Se), zinc (Zn), β-carotene, lycopene and vitamins (A and E) to sociodemographic features and seasonality in communities from the Tapajós River region, Brazilian Amazon. We observed increased Mn, Se and Zn levels compared to the average Brazilian population, whereas this is only the case for β-carotene in the rainy season. Lycopene levels fall within the reference range, although lower than those found in other Brazilian regions. Cu, Se, Zn, β-carotene, lycopene and vitamin E levels vary among seasons. β-carotene, Mn and Se vary among communities. Se and Zn vary with smoking habits and sex, respectively. In addition, β-carotene and vitamins (A and E) are altered by alcohol consumption. Villagers who both farmed and fished present higher Cu and lower β-carotene levels than participants with a single occupation. Vitamin E levels depend upon the individual state of origin. These data provide important baseline information for antioxidant status in this Amazonian riparian population.

scholarly journals An encapsulated fruit, vegetable and berry juice powder concentrate increases plasma values of specific carotenoids and vitamins

2019 ◽  
pp. 1-10 ◽  
Author(s):  
Sebastian Dams ◽  
Sandra Holasek ◽  
Melina Tsiountsioura ◽  
Daniela-Eugenia Malliga ◽  
Nathalie Meier-Allard ◽  
...  
Keyword(s):  
Vitamin C ◽  
Healthy Subjects ◽  
Reference Range ◽  
Plasma Concentrations ◽  
Human Organism ◽  
Reference Ranges ◽  
Vital Functions ◽  
Before And After ◽  
The Individual ◽  
Β Carotene

Abstract. Vitamins and carotenoids are organic compounds that are important for vital functions of the human organism. Since the human body is not able to synthesize most of these micronutrients, they need to be supplied by the intake of food or supplements. The aim of this study was to analyze whether a whole food based, encapsulated fruit, berry, and vegetable juice powder concentrate provides bioavailable carotenoids and vitamins A (all-trans retinol), E and C. Eighteen healthy subjects received 6 capsules a day for 8 weeks, which provided 2.91 mg β-carotene, 490 μg vitamin A, 18.7 mg vitamin E, 159 mg vitamin C, 6.1 mg lutein and 1 mg lycopene. Plasma concentrations of several carotenoids and vitamins before and after supplementation were measured. After 8 weeks of supplementation, the plasma concentration of the following carotenoids increased significantly: α-carotene increased from 59.6 ± 22.4 nmol/L to 85.7 ± 24.2 nmol/L (p = 0.002), β-cryptoxanthin from 106.7 ± 39.8 nmol/L to 151.9 ± 57.9 nmol/L (p = 0.017), and lycopene from 1.2 ± 0.5 μmol/L to 1.7 ± 0.5 μmol/L (p = 0.005). Significant increases were also observed for plasma concentrations of vitamin C from 70 ± 20 μmol/L to 90 ± 10 μmol/L (p < 0.001), all-trans retinol from 1.99 ± 0.24 μmol/L to 2.30 ± 0.66 μmol/L (p = 0.015), and α-tocopherol from 27 ± 6 μmol/L to 32 ± 6 μmol/L (p = 0.008). For those micronutrients with accepted plasma reference ranges, all observed increases levelled off around the upper limit of the individual reference range. The data demonstrate that the investigated supplement is able to increase plasma concentrations of certain carotenoids and vitamins of healthy subjects within 8 weeks.

scholarly journals Vitamin A and E Homologues Impacting the Fate of Acrylamide in Equimolar Asparagine-Glucose Model System

Antioxidants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 993
Author(s):  
Su Lee Kuek ◽  
Azmil Haizam Ahmad Tarmizi ◽  
Raznim Arni Abd Razak ◽  
Selamat Jinap ◽  
Maimunah Sanny
Keyword(s):  
Vitamin E ◽  
Linear Regression ◽  
Vitamin A ◽  
Regression Model ◽  
Linear Regression Model ◽  
Model System ◽  
Concentration Increase ◽  
Acrylamide Formation ◽  
Β Carotene

This study aims to evaluate the influence of Vitamin A and E homologues toward acrylamide in equimolar asparagine-glucose model system. Vitamin A homologue as β-carotene (BC) and five Vitamin E homologues, i.e., α-tocopherol (AT), δ-tocopherol (DT), α-tocotrienol (ATT), γ-tocotrienol (GTT), and δ-tocotrienol (DTT), were tested at different concentrations (1 and 10 µmol) and subjected to heating at 160 °C for 20 min before acrylamide quantification. At lower concentrations (1 µmol; 431, 403, 411 ppm, respectively), AT, DT, and GTT significantly increase acrylamide. Except for DT, enhancing concentration to 10 µmol (5370, 4310, 4250, 3970, and 4110 ppm, respectively) caused significant acrylamide formation. From linear regression model, acrylamide concentration demonstrated significant depreciation over concentration increase in AT (Beta = −83.0, R2 = 0.652, p ≤ 0.05) and DT (Beta = −71.6, R2 = 0.930, p ≤ 0.05). This study indicates that different Vitamin A and E homologue concentrations could determine their functionality either as antioxidants or pro-oxidants.

scholarly journals Biochemical Validation of a Self-Administered Food Frequency Questionnaire to Assess Diet Using Carotenoids and Vitamins E and D in Male Adolescents in Spain

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 750
Author(s):  
Leyre Notario-Barandiaran ◽  
Eva-María Navarrete-Muñoz ◽  
Desirée Valera-Gran ◽  
Elena Hernández-Álvarez ◽  
Encarnación Donoso-Navarro ◽  
...  
Keyword(s):  
Vitamin E ◽  
Food Frequency Questionnaire ◽  
Vegetable Intake ◽  
Correlation Coefficients ◽  
Fruit And Vegetable Intake ◽  
Fruit And Vegetable ◽  
Sample Mean ◽  
Food Frequency ◽  
Male Adolescents ◽  
Β Carotene

Reliable tools to evaluate diet are needed, particularly in life periods such as adolescence in which a rapid rate of growth and development occurs. We assessed the biochemical validity of a self-administered food frequency questionnaire (FFQ) in a sample of Spanish male adolescents using carotenoids and vitamin E and D data. We analyzed data from 122 male adolescents aged 15–17 years of the INMA-Granada birth cohort study. Adolescents answered a 104-item FFQ and provided a non-fasting blood sample. Mean daily nutrient intakes and serum concentration were estimated for main carotenoids (lutein-zeaxanthin, β-cryptoxanthin, lycopene, α-carotene and β-carotene), vitamins E and D and also for fruit and vegetable intake. Pearson correlation coefficients (r) and the percentage of agreement (same or adjacent quintiles) between serum vitamin concentrations and energy-adjusted intakes were estimated. Statistically significant correlation coefficients were observed for the total carotenoids (r = 0.40) and specific carotenoids, with the highest correlation observed for lutein–zeaxanthin (r = 0.42) and the lowest for β-carotene (0.23). The correlation coefficient between fruit and vegetable intake and serum carotenoids was 0.29 (higher for vegetable intake, r = 0.33 than for fruit intake, r = 0.19). Low correlations were observed for vitamin E and D. The average percentage of agreement for carotenoids was 55.8%, and lower for vitamin E and D (50% and 41%, respectively). The FFQ may be an acceptable tool for dietary assessment among male adolescents in Spain.

scholarly journals Dietary and circulating vitamin C, vitamin E, β-carotene and risk of total cardiovascular mortality: a systematic review and dose–response meta-analysis of prospective observational studies

2019 ◽  
Vol 22 (10) ◽  
pp. 1872-1887 ◽  
Author(s):  
Ahmad Jayedi ◽  
Ali Rashidy-Pour ◽  
Mohammad Parohan ◽  
Mahdieh Sadat Zargar ◽  
Sakineh Shab-Bidar
Keyword(s):  
Systematic Review ◽  
Vitamin E ◽  
Vitamin C ◽  
Dose Response ◽  
Observational Studies ◽  
Meta Analysis ◽  
Dietary Intakes ◽  
Relative Risks ◽  
Β Carotene ◽  
Cvd Mortality

AbstractObjectiveThe present review aimed to quantify the association of dietary intake and circulating concentration of major dietary antioxidants with risk of total CVD mortality.DesignSystematic review and meta-analysis.SettingSystematic search in PubMed and Scopus, up to October 2017.ParticipantsProspective observational studies reporting risk estimates of CVD mortality across three or more categories of dietary intakes and/or circulating concentrations of vitamin C, vitamin E and β-carotene were included. A random-effects meta-analysis was conducted.ResultsA total of fifteen prospective cohort studies and three prospective evaluations within interventional studies (320 548 participants and 16 974 cases) were analysed. The relative risks of CVD mortality for the highest v. the lowest category of antioxidant intakes were as follows: vitamin C, 0·79 (95 % CI 0·68, 0·89; I2=46 %, n 10); vitamin E, 0·91 (95 % CI 0·79, 1·03; I2=51 %, n 8); β-carotene, 0·89 (95 % CI 0·73, 1·05; I2=34 %, n 4). The relative risks for circulating concentrations were: vitamin C, 0·60 (95 % CI 0·42, 0·78; I2=65 %, n 6); α-tocopherol, 0·82 (95 % CI 0·76, 0·88; I2=0 %, n 5); β-carotene, 0·68 (95 % CI 0·52, 0·83; I2=50 %, n 6). Dose–response meta-analyses demonstrated that the circulating biomarkers of antioxidants were more strongly associated with risk of CVD mortality than dietary intakes.ConclusionsThe present meta-analysis demonstrates that higher vitamin C intake and higher circulating concentrations of vitamin C, vitamin E and β-carotene are associated with a lower risk of CVD mortality.

scholarly journals INHERITED TASTES AND ENDOGENOUS LONGEVITY

2017 ◽  
Vol 23 (2) ◽  
pp. 674-698 ◽  
Author(s):  
Luciano Fanti ◽  
Luca Gori ◽  
Cristiana Mammana ◽  
Elisabetta Michetti
Keyword(s):  
Steady State ◽  
Overlapping Generations ◽  
Standard Of Living ◽  
Poverty Trap ◽  
Individual State ◽  
State Of Health ◽  
Tax Rate ◽  
Public Investments ◽  
The Individual ◽  
Endogenous Longevity

This article aims at studying a general equilibrium model with overlapping generations that incorporates inherited tastes (aspirations) and endogenous longevity. The existence of standard-of-living aspirations transmitted between two subsequent generations in a context where the individual state of health depends on public investments in health has some remarkable consequences at the macroeconomic level. First, aspirations allow escaping from the well-known poverty trap scenario described by Chakraborty (2004). Second, the steady-state equilibrium may be destabilized through a super-critical Neimark–Sacker bifurcation when the health tax rate is set at too high or too low a level. This causes endogenous fluctuations in income and longevity.

Does Sophistication Affect Electoral Outcomes?

2016 ◽  
Vol 53 (2) ◽  
pp. 181-204 ◽  
Author(s):  
Lauri Rapeli
Keyword(s):  
Future Research ◽  
Citizen Competence ◽  
Individual Level ◽  
Electoral Outcomes ◽  
Sociodemographic Determinants ◽  
Political Left ◽  
Electoral Behaviour ◽  
Research Questions ◽  
The Individual ◽  
The Right

It is widely assumed that a representative democracy requires an enlightened citizenry in order to function properly. The competence of citizens has been studied extensively and the sociodemographic determinants of political sophistication are particularly well known. Much less is known about whether and how citizen competence affects electoral behaviour and outcomes. This article reviews the existing literature on these topics. Despite the widespread consensus that, generally speaking, citizen competence matters for electoral outcomes, the review produced a mixed result: some studies suggest that the political left would benefit from a better-informed electorate, while other studies suggest the opposite. Although the majoritarian electoral context is overrepresented in the evidence, the review shows that at the individual level, political knowledge greatly increases a person’s ability to match personal preferences with the right candidate or party in an election. The article also identifies several gaps in existing knowledge, thereby suggesting future research questions.

scholarly journals New Technology for Functional Dessert Production Based on Soy and Pumpkin

2020 ◽  
pp. 351-360
Author(s):  
Ekaterina Statsenko ◽  
Oksana Litvinenko ◽  
Nadezhda Korneva ◽  
Mikhail Shtarberg ◽  
Evgeniy Borodin
Keyword(s):  
Vitamin E ◽  
Vitamin C ◽  
Sensory Evaluation ◽  
Functional Foods ◽  
Liquid Fraction ◽  
New Technology ◽  
Daily Intake ◽  
Sea Buckthorn ◽  
Expert Assessment ◽  
Β Carotene

Abstract. Introduction. Domestic food production based on the regional market characteristics can expand the range of functional foods. The research objective was to develop a new technology for desserts based on soy and pumpkin. Study objects and methods. The research featured soybeans of the “Yurna” variety and pumpkin of the “Nadezhda” variety. Soaked soybeans were mixed with mashed pumpkin and drinking water. The mass was heated and kept at 100°C for 30 min with simultaneous grinding and extraction of soluble dry matter. The soy and pumpkin liquid fraction was separated by filtration. A 2.5% aqueous solution of ascorbic acid was added to the liquid fraction at 75–80°C to coagulate protein and other substances. The soy and pumpkin coagulate had a moisture content of 75.0 ± 1%. It was mixed with sea buckthorn syrup and homogenized. The finished product was called “Nadezhda+”. The “Nezhnyi” dessert consisted of gelling solution mixed with soy and pumpkin coagulate and sea buckthorn syrup, after which the mass was homogenized. Results and discussion. The expert assessment helped to identify the most significant indicators of the sensory evaluation of the desserts, namely taste and consistency. The sensory evaluation also made it possible to define the optimal homogenization time for the mix: 60 s for “Nadezhda+” and 90 s for “Nezhnyi”. The developed desserts contained protein (5.75 and 4.70 g/100 g), phosphatides (334 and 102 mg/100 g), β-carotene (2.86 and 1.62 mg/100 g), vitamin E (28.60 and 16.00 mg/100 g) and vitamin C (35.10 and 10.60 mg/100 g), respectively. Conclusion. The content of β-carotene and vitamin E exceeded 15 % of the daily intake in one portion (100 g) of the desserts, as well as vitamin C in “Nadezhda+”. According with State Standard R 52349-2005, the new desserts could be referred to functional foods.

Influence of age and physical activity on central hemodynamics and lung function in active adults

1978 ◽  
Vol 45 (5) ◽  
pp. 709-717 ◽  
Author(s):  
I. L. Kanstrup ◽  
B. Ekblom
Keyword(s):  
Physical Activity ◽  
Maximal Exercise ◽  
Individual State ◽  
Vo2 Max ◽  
Physically Active ◽  
Circulatory Response ◽  
The Individual ◽  
Active Adults ◽  
Mixed Venous ◽  
Peak Value

Five female and seven male physically active adults were studied twice within a 13-yr interval. The individual state of physical activity was mainly unchanged. Maximal oxygen uptake (VO2 max) was reduced in all subjects except one female, in whom it remained unchanged. During maximal exercise, cardiac output (Q) in males was unchanged. In females, Q was significantly increased due to increased stroke volume (SV). In both sexes, the reduced VO2 max was explained by a smaller arteriovenous O2 difference (mixed venous O2 content (C-VO2) significantly increased). For a given submaximal VO2, Q was increased in both sexes and heart rate was unchanged. Thus, SV was increased and arteriovenous O2 difference was reduced due to increased C-VO2. Another four males were studied several times in various states of physical fitness during an 11-yr period. The reduced VO2 max from peak value was due to a reduced Qmax (SV smaller), whereas the arteriovenous O2 difference and C-VO2 were unchanged. Our results indicate that the observed changes in circulatory response to submaximal and maximal exercise in physically active adults may to a large extent be due to an effect of “detraining.”

scholarly journals Plasma retinol, β-carotene and vitamin E levels in relation to the future risk of breast cancer

1984 ◽  
Vol 49 (3) ◽  
pp. 321-324 ◽  
Author(s):  
N J Wald ◽  
J Boreham ◽  
J L Hayward ◽  
R D Bulbrook
Keyword(s):  
Breast Cancer ◽  
Vitamin E ◽  
The Future ◽  
Future Risk ◽  
Plasma Retinol ◽  
Β Carotene
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