Carotene, Vitamin A, and Ascorbic Acid in Mare's Plasma

1944 ◽  
Vol 3 (4) ◽  
pp. 346-350 ◽  
Author(s):  
R. A. Rasmussen ◽  
C. L. Cole ◽  
Marian J. Miller
Keyword(s):  
Ascorbic Acid ◽  
Vitamin A

scholarly journals Bioactive Compounds, Vitamins and Minerals Composition of Freeze-dried Grewia asiatica L. (Phalsa) Pulp and Seed Powder

2019 ◽  
Vol 38 (03) ◽  
Author(s):  
Kiran Bala ◽  
Aradhita Barmanray
Keyword(s):  
Heavy Metals ◽  
Ascorbic Acid ◽  
Vitamin A ◽  
Bioactive Compounds ◽  
Functional Foods ◽  
Total Phenols ◽  
Total Anthocyanin ◽  
Freeze Dried ◽  
Total Anthocyanins ◽  
Β Carotene

Present study was directed to analyze and compare the bioactive compounds (total phenols, total anthocyanins), vitamins (ascorbic acid, β-carotene, vitamin A), minerals including Ca, Mg, Na, P, K, Fe, Cu, Zn, Co, Mn and heavy metals (Cd, Hg, Pb) of freeze-dried (lyophilized) phalsa pulp and seed powder. In lyophilized pulp powder (LPP) higher amount of total phenols (78.11 mg/100g), total anthocyanin (82.94 mg/100g), ascorbic acid (5.21 mg/100g), β-carotene (0.54 µg/100g), vitamin A (0.89 I.U.) were observed than lyophilized seed powder (LSP). Na, K, Mg and Co (0.41, 0.39, 1.08, 0.46 mg/100g, respectively) were higher in LPP as compared to LSP (0.29, 0.11, 0.76 and 0.40 mg/100g, respectively) whereas, Ca, P and Cu were detected more in LSP. This study opens the prospect of using dry phalsa powder in the preparation of various nutraceutical and functional foods for their therapeutic as well as prophylactic purposes.

scholarly journals EFFECT OF SOIL AND GROWTH CLIMATIC CONDITIONS ON VITAMIN CONTENT OF RED CLOVER (Trifolium pratense L.)

2020 ◽  
Vol 8 (Spl-2-AABAS) ◽  
pp. S292-S297
Author(s):  
Alexander Leonidovich Mikhailov ◽  
◽  
Olga Arnoldovna Timofeeva ◽  
Uliana Aleksandrovna Ogorodnova ◽  
Nikita Sergeevich Stepanov ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Vitamin A ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Ascorbic Acid Content ◽  
Southern Taiga ◽  
Climatic Conditions ◽  
Deciduous Forests ◽  
Vitamin Content ◽  
Trifolium Pratense L

The current study was conducted to estimate the effect of soil and growth climatic conditions on the vitamin content of red clover (Trifolium pratense L.). Further, in vitamins, the content of ascorbic acid and vitamin A (provitamin – carotene) was estimated from the aerial parts of the clover. Ascorbic acid is a powerful antioxidant, antiviral, and antitumor vitamin while vitamin A is a useful vitamin for eyesight. Ascorbic acid content in the red clover tissues was determining potassium hexacyanoferrate method while Provitamin A and total carotenoid was estimated by spectrophotometric method. Results of the study revealed that the highest content of vitamins C was found in the plant grown under the climatic conditions of the southern taiga subzone of the Atninsky and in the zone of deciduous forests (Apastovsky and Kamsko-Ustinsky districts) while the plant is grown under the coniferous-deciduous forests (Zelenodolsky district) climatic conditions are a rich source of vitamin A. From the results of the study, it can conclude the soil and growing conditions especially temperature regime and soil moisture affected the level of vitamins in red clover.

Effectiveness of Carotene and Failure of Ascorbic Acid to Increase Sexual Activity and Semen Quality of Vitamin A Deficient Beef Bulls

1948 ◽  
Vol 7 (1) ◽  
pp. 60-69 ◽  
Author(s):  
Louis L. Madsen ◽  
O. N. Eaton ◽  
Louis Heemstra ◽  
Russell E. Davis ◽  
Charles A. Cabell ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Vitamin A ◽  
Sexual Activity ◽  
Semen Quality ◽  
Beef Bulls

Protection of Milk Packaged in High Density Polyethylene Against Photodegradation by Fluorescent Light

1985 ◽  
Vol 48 (2) ◽  
pp. 112-117 ◽  
Author(s):  
ANTHONY J. FANELLI ◽  
JOAN V. BURLEW ◽  
MINA K. GABRIEL
Keyword(s):  
Ascorbic Acid ◽  
Vitamin A ◽  
High Density Polyethylene ◽  
Uv Light ◽  
Uv Spectra ◽  
Fluorescent Light ◽  
Testing Program ◽  
Fda Approval ◽  
Uv Absorbers ◽  
Commercial Milk

The effectiveness of visible and UV light screens, compounded in polyethylene dairy resin to protect vitamins in milk from photodegradation, was investigated. Three pigments and three UV absorbers were chosen for testing on the basis of their commercial availability, FDA approval for contact with food, and advertised compatibility with polyolefins. In this study, vitamin decomposition was accelerated over what would be experienced in a commercial milk container in order to expedite the testing program and exaggerate differences in effectiveness of the various light screens. Good protection of vitamin A and riboflavin was provided by 0.3 wt % FD&C yellow #5. Protection of ascorbic acid was marginal. Two of the UV absorbers, Cyasorb 531 and Tinuvin 326, afforded protection of vitamin A, but not riboflavin or ascorbic acid. Visible and UV spectra are presented for the vitamins and light screens used in this work.

INTERRELATIONSHIP OF VITAMINS A AND C ON TISSUE UBIQUINONES AND STEROLS OF RATS AND GUINEA PIGS

1967 ◽  
Vol 45 (6) ◽  
pp. 749-756 ◽  
Author(s):  
W. E. J. Phillips
Keyword(s):  
Ascorbic Acid ◽  
Vitamin A ◽  
Vitamin C ◽  
Guinea Pig ◽  
Guinea Pigs ◽  
Vitamin A Deficiency ◽  
Secondary Effect ◽  
Vitamin C Deficiency ◽  
Vitamins A And C ◽  
Combined Deficiency

The effect of administration of ascorbic acid to normal or vitamin A-deficient rats was studied in relation to hepatic levels of ubiquinones and sterols. Similar studies were made on tissues from guinea pigs deficient in vitamin C, vitamin A, or both. Vitamin A deficiency increased the concentration of liver ubiquinones in the rat. Administration of ascorbate did not influence tissue levels of ubiquinones or sterols. Vitamin C deficiency increased the concentration of sterols but not of ubiquinones in the liver of the guinea pig. Vitamin A deficiency did not increase ubiquinones nor did a combined deficiency of vitamins A and C. A secondary effect of vitamin C deficiency in the vitamin A-deficient rat is not the cause of increased ubiquinone levels.

scholarly journals Role of antioxidants in electro catalysis of cytochrome P450 3A4

2014 ◽  
Vol 60 (2) ◽  
pp. 224-234 ◽  
Author(s):  
V.V. Shumyantseva ◽  
A.A. Makhova ◽  
T.V. Bulko ◽  
E.V. Shich ◽  
V.G. Kukes ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Catalytic Activity ◽  
Vitamin E ◽  
Vitamin A ◽  
Antioxidant Properties ◽  
Biologically Active ◽  
Catalytic Current ◽  
Electrochemical Approach ◽  
Electro Catalysis ◽  
Clinical Experiments

The electrochemical analysis of cytochrome Р450 3А4 catalytic activity has shown that vitamins C, A and Е influence on electron transfer and Fe3+/Fe2+ reduction process of cytochrome Р450 3А4. These data allow to assume possibility of cross effects and interference of vitamins-antioxidants with drugs metabolised by cytochrome Р450 3А4, at carrying out of complex therapy. This class of vitamins shows antioxidant properties that lead to increase of the cathodic current corresponding to heme reduction of this functionally significant haemoprotein. Ascorbic acid of 0.028-0.56 mM concentration stimulates cathodic peak (an electrochemical signal) of cytochrome Р450 3А4. At the presence of diclofenac (Voltaren) - a typical substrate of cytochrome Р450 3А4 - the increase growth of a catalytic current testifying to an electrocatalysis and stimulating action of ascorbic acid is observed. In the presence of vitamins A and Е also is registered dose-dependent (in a range of 10-100 M) increase in a catalytic current of cytochrome Р450 3А4: the maximum increase corresponds to 229 ± 20% for 100 M of vitamin A, and 162±10% for 100 M of vitamin E. Vitamin E in the presence of P450’s inhibitor itraconazole doesn't give essential increase in a reductive current, unlike retinol (vitamin A). This effect can manifest substrate properties of tocopherol (vitamin E). The electrochemical approach for the analysis of catalytic activity of cytochrome Р450 3А4 and studies of influence of biologically active compounds on an electrocatalysis is the sensitive and effective sensor approach, allowing to use low concentration of protein on an electrode (till 10-15 mol/electrode), to carry out the analysis without participation of protein redox partners, and to reveal drug-drug or drug-vitamins interaction in pre-clinical experiments.

Sign in / Sign up

Export Citation Format

Share Document