scholarly journals Negative Effect of Camu-Camu (Myrciaria dubia) Despite High Vitamin C Content on Iron Bioavailability, Using a Caco-2 Cell Model

2014 ◽  
Vol 64 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Yael Nemirovsky ◽  
Nelly Zavaleta ◽  
Maria Villanueva ◽  
Seth Armah ◽  
Sixto Iman ◽  
...  
Keyword(s):  
Vitamin C ◽  
Cell Model ◽  
Iron Bioavailability ◽  
High Vitamin ◽  
Myrciaria Dubia ◽  
Negative Effect

scholarly journals Effects of ascorbic acid, phytic acid and tannic acid on iron bioavailability from reconstituted ferritin measured by anin vitrodigestion–Caco-2 cell model

2008 ◽  
Vol 101 (7) ◽  
pp. 972-981 ◽  
Author(s):  
Fuxia Jin ◽  
Charles Frohman ◽  
Theodore W. Thannhauser ◽  
Ross M. Welch ◽  
Raymond P. Glahn
Keyword(s):  
Ascorbic Acid ◽  
Phytic Acid ◽  
Tannic Acid ◽  
Cell Model ◽  
Iron Bioavailability ◽  
Molar Ratio ◽  
Plant Type ◽  
Inhibiting Effect ◽  
Negative Effect

The effects of ascorbic acid (AA), phytate and tannic acid (TA) on Fe bioavailability from Fe supplied as reconstituted ferritin were compared with FeSO4using anin vitrodigestion–Caco-2 cell model. Horse spleen apoferritin was chemically reconstituted into an animal-type ferritin (HSF) and a plant-type ferritin (P-HSF) according to the typical ratios of Fe:P found in these molecules. In the presence of AA (Fe:AA molar ratio of 1:20), significantly more Fe was absorbed from FeSO4(about 303 %), HSF (about 454 %) and P-HSF (about 371 %) when compared with ferrous sulfate or ferritin without AA. Phytic acid (PA; Fe:PA molar ratio of 1:20) significantly reduced Fe bioavailability from FeSO4(about 86 %), HSF (about 82 %) and P-HSF (about 93 %) relative to FeSO4and the ferritin controls. Treatment with TA (Fe:TA molar ratio of 1:1) significantly decreased Fe bioavailability (about 97 %) from both FeSO4and the ferritin samples. AA was able to partially reverse the negative effect of PA (Fe:PA:AA molar ratio of 1:20:20) on Fe bioavailability but did not reverse the inhibiting effect of TA (Fe:TA:AA molar ratio of 1:1:20) on Fe bioavailability from ferritin and FeSO4. Overall, there were no significant differences in bioavailable Fe between P-HSF, HSF or FeSO4. Furthermore, the addition of AA (a known promoter) or the inhibitors, PA and TA, or both, did not result in significant differences in bioavailable Fe from ferritin relative to FeSO4. The results suggest that Fe in the reconstituted ferritin molecule is easily released duringin vitrodigestion and interacts with known promoters and inhibitors.

scholarly journals High Vitamin C Intake Is Associated with Lower 4-Year Bone Loss in Elderly Men

2008 ◽  
Vol 138 (10) ◽  
pp. 1931-1938 ◽  
Author(s):  
Shivani Sahni ◽  
Marian T. Hannan ◽  
David Gagnon ◽  
Jeffrey Blumberg ◽  
L. Adrienne Cupples ◽  
...  
Keyword(s):  
Bone Loss ◽  
Vitamin C ◽  
Elderly Men ◽  
High Vitamin

Phenotypic characterisation of the germplasm bank of mangaba (Hancornia speciosa Gomes), a unique Brazilian native fruit, with emphasis on its high vitamin C content

2021 ◽  
pp. 1-13
Author(s):  
Josefa Grasiela Silva Santana ◽  
Priscilla Santana Santos ◽  
Lisiane Santos Freitas ◽  
Fabiano Silva Soares ◽  
Moisés Ambrósio ◽  
...  
Keyword(s):  
Vitamin C ◽  
Germplasm Bank ◽  
High Vitamin ◽  
Phenotypic Characterisation ◽  
Hancornia Speciosa

scholarly journals The effect of aloe preparation and 5-oxo-1,2,4-triazine on immunological and haematological indices of blood of turkey hens subjected to stress

2015 ◽  
Vol 84 (4) ◽  
pp. 365-371 ◽  
Author(s):  
Katarzyna Ognik ◽  
Iwona Sembratowicz ◽  
Anna Czech
Keyword(s):  
Drinking Water ◽  
Body Weight ◽  
Vitamin C ◽  
Stress Factors ◽  
Phagocytic Cells ◽  
Control Groups ◽  
Induced Stress ◽  
T Stress ◽  
Negative Effect ◽  
Haematological Indices

The aim of this study was to determine the effect of aloe extract or 5-oxo-1,2,4-triazine on immunological and haematological indices during artificially induced stress in turkey hens. The experiment was carried out on 360 turkey hens (6 groups). The groups C and C+stress were the control groups and did not receive any additive. Birds from the groups A and A+stress were administered aloe extract at the amount of 0.70 ml/kg body weight (bw)/day. The turkey hens from the groups T and T+stress received 5-oxo-1,2,4-triazine at the amount of 30 μg/kg bw/day. The additives were administered in the birds’ drinking water twice for 28 days (days 36–63 and 78–105) of the birds’ life. On days 61–63 and 103–105 a stress factor (simultaneous crowding and a change in temperature and lighting) was introduced in the groups C+stress, A+stress and T+stress for 1 hour a day. The results showed that the applied stress factors caused a significant (P ≤ 0.05) decrease in the lysozyme level and % phagocytic cells, as well as a non-significant reduction in the metabolic activity of heterophils. Under the influence of stress an increase (P ≤ 0.05) in the percentage of monocytes and basophils was observed. The use of aloe preparation improved some indicators of immunity (increased, P ≤ 0.05, lysozyme and % phagocytic cells) in the turkey hens. To alleviate the negative effect of stress on immune reactions, supplementation of diets with aloe extract supplemented with resveratrol and vitamin C may be considered.

ASSESSMENT OF A LARGE-FRUITED STRAWBERRY VARIETIES ECOLOGICAL PLASTICITY AND STABILITY IN TERMS OF PRODUCTIVITY AND FRUIT QUALITY

1970 ◽  
pp. 40-43
Author(s):  
T. G. Dakhno ◽  
O. А. Dakhno
Keyword(s):  
Vitamin C ◽  
Positive Response ◽  
Soluble Solids ◽  
Regression Analyses ◽  
Ecological Plasticity ◽  
High Vitamin ◽  
Significant Strength ◽  
Kamchatka Region ◽  
Fruit Productivity ◽  
Growing Conditions

The article presents a comparative analysis of the ecological plasticity and stability of large-fruited strawberry varieties in the conditions of the Kamchatka region. As a result of statistical and regression analyses, varieties with high ecological plasticity of productivity (bi  > 1) and a positive response to improved growing conditions were identified, classified as intensive type: Pervoclassniza, Atlas, Japonka, Grenada, Festivalnay romashka, Galina, Fructovay; with low plasticity (bi < 1)-extensive type: Solnechnay polaynka, Corrado, Wengerca. Of particular value are the most stable in terms of productivity varieties of intensive type Galina and Fruit. A positive correlation of significant strength between the productivity of strawberry varieties and the coefficients of stability (r = 0,7) and plasticity (r = 0,6) was established, which shows the effectiveness of their use in assessing the adaptability of varieties. High-vitamin varieties with an average berry weight of at least 7,0 g, the most environmentally plastic and stable in vitamin C content, were identified: Atlas, Firework, Pervoclassniza, Fructovay. A comprehensive assessment of the parameters of adaptability in terms of fruit productivity and quality (vitamin C content, soluble solids, sugar-acid coefficient)established that the highest ecological plasticity and stability are possessed by high-vitamin varieties of intensive type Pervoclassniza and Fructovay.

High vitamin C intake may help prevent gout

BMJ ◽  
2009 ◽  
Vol 338 (apr29 3) ◽  
pp. b1654-b1654
Keyword(s):  
Vitamin C ◽  
High Vitamin

Effect of induction of thermotolerance with vitamin C, E supplementation on performance broiler chickens reared at during heat stress

2005 ◽  
Vol 2005 ◽  
pp. 169-169
Author(s):  
S. Roshani ◽  
A. M. Tahmasbi ◽  
A. Taghizadeh ◽  
M. Valizadeh
Keyword(s):  
Heat Stress ◽  
Vitamin C ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Environmental Temperature ◽  
Live Weight ◽  
Early Age ◽  
Nutrient Supplementation ◽  
Carcass Characteristic ◽  
Negative Effect

The stress of high environmental temperature may have a deleterious influence on the performance of broiler chickens by reducing feed intake, live weight gain and feed efficiency. Exposing chicks to 36-38°C for 24h at 5d of age reinforces the resistance of older (6 to 7 wk-old) broilers to heat stress (De Basillo et al., 2003). Several studies have revealed that antioxidant nutrient supplementation especially vitamin C and E can be used to alter the negative effect of environmental stress (NRC, 1984). Combination of antioxidant vitamins generally shows greater antioxidant activity than that of each component alone. The objective of this study was to investigate the effects of early age thermal conditioning and vitamin C, E supplementation on performance, carcass characteristic in broiler chickens reared under heat stress.

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