Results 131 to 140 of about 3,690 (172)

Vitamin A and the provitamin A carotenoids

1998
In 1915 McCollum and Davis isolated from animal fats and fish oils a ‘fat-soluble A’ that was essential to rats for growth and also cured eye disorders. In 1921 Bloch reported that a diet containing full milk and cod-liver oil cured xerophthalmia in infants and concluded that the eye affliction was due to the absence of the fat-soluble A in the diet ...
openaire   +1 more source

STUDY OF THE SAFETY OF GRAIN POST-ALCOHOLIC GRAIN

Problems of Biological Medical and Pharmaceutical Chemistry
Introduction. When producing alcohol, only the starch is extracted from the grain; the remainder of the grain containing various biologically active substances (BAS): proteins and amino acids, reducing substances, uronides, flavonoids, lipids, vitamins ...
N. Kaĭsheva, A. Kaishev, C.N. Gulbyakova, A.B. Samoryadova   +3 more
semanticscholar   +1 more source

Effect of solar drying on vitamin D3 and provitamin D3 contents in fish meat

Journal of Agricultural and Food Chemistry, 1988
La vitamine D3 (chlolecalciferol) apparait instable a la lumiere solaire, contrairement a la provitamine D3 (dehydro-7-cholesterol). Ceci suggere que la vitamine D3 dans le poisson n'est pas formee sous l'influence de l'exposition au ...
Hiramitsu Suzuki, Seiichi Hayakawa, Shun Wada, Emiko Okazaki, Masakatsu Yamazawa   +4 more
openaire   +1 more source

Dietary Reference Intakes: revised nutritional equivalents for folate, vitamin E and provitamin A carotenoids

Journal of Food Composition and Analysis, 2003
Nutritional equivalents for folate, vitamin E and provitamin A carotenoids have been revised to more accurately reflect their contribution to nutrition as they exist in foods. This revision results in a reduction in the nutritional value of each of these three nutrients compared to previous nutritional equivalents.
Paula R. Trumbo, Allison A. Yates, Sandra Schlicker-Renfro, Carol Suitor   +3 more
openaire   +1 more source

Thermal degradation kinetics of carotenoids, vitamin C and provitamin A in tree tomato juice

International Journal of Food Science & Technology, 2019
SummaryIn this research, the influence of temperature on the degradation of carotenoids, vitamin C and provitamin A in tree tomato juice was studied at 70, 80 and 90 °C. The thermal processing significantly reduced (P < 0.001) the concentration of the bioactive compounds, and the thermal degradation in the evaluated phytochemicals fit a kinetic ...
Luis Eduardo Ordóñez‐Santos, Jader Martínez‐Girón   +1 more
openaire   +1 more source

Provitamin A and vitamin C contents in selected California-grown cantaloupe and honeydew melons and imported melons

Journal of Food Composition and Analysis, 2011
Vitamins are essential for human health and are mainly obtained from dietary sources. Cantaloupe and honeydew melons are abundant in provitamin A and vitamin C. California is one of the leading producers of cantaloupe and honeydew melons in the United States.
Lisa M. Laur, Li Tian
openaire   +1 more source

Effect of Acidified Processing and Storage on Carotenoids (Provitamin A) and Vitamin C in Mung Bean Sprouts

Journal of Food Science, 1981
ABSTRACT Blanching of mung bean sprouts has little effect on total carotenoids and β‐carotene. Canned sprouts stored at RT for 6 months lost smaller amounts of total and ‘active’ carotenoids compared with bottled sprouts. Blanching resulted in approximately 50% loss of vitamin C in fresh mung bean sprouts but storage temperatures ...
MEHDI FARHANGI, L. R. GUY VALADON
openaire   +1 more source

VITAMIN AND PROVITAMIN PROFILES OF SELECTED VEGETABLES AS AFFECTED BY DIFFERENT DRYING METHODS

Nigerian Journal of Animal Production
The vitamin profiles of selected common vegetables as affected by three different drying methods were investigated. Seven vegetables were each subjected to three drying methods: air drying, oven drying and freeze drying. The experiment was a 3x7 factorial arrangement in a completely randomized design.
A. O. MOSURO, O. A. OGUNWOLE, A. A. MAKO, A. A. MAKO, B. S. ADEDEJI, F. O. JEMISEYE, T. ABOKEDE, I. A. OLUDOYI   +7 more
openaire   +1 more source

Food Sources of Vitamin A and Provitamin a Specific to Africa: An FAO Perspective

Food and Nutrition Bulletin, 2001
Vitamin A deficiency is a major public health problem in Africa, especially in the Sahelian countries. It occurs mainly in young children and women of childbearing age. Inadequate intake of vitamin A is the main cause of the deficiency. The main animal sources of vitamin A are liver, eggs, milk, and milk products.
openaire   +1 more source

Seasonal Variation of Provitamin D₂ and Vitamin D₂ in Perennial Ryegrass (Lolium perenne L.)

Journal of Agricultural and Food Chemistry, 2011
Ergosterol (provitamin D(2)) is converted to vitamin D(2) in grass by exposure to UV light. Six varieties of perennial ryegrass (Lolium perenne L.) were harvested four times during the season, and the contents of vitamin D(2) and ergosterol were analyzed by a sensitive and selective liquid chromatography tandem mass spectrometry method. Weather factors
Rie Bak, Jäpelt, Thomas, Didion, Jørn, Smedsgaard, Jette, Jakobsen   +3 more
openaire   +2 more sources