Determination of β-carotene content and vitamin A activity of vegetables by high-performance liquid chromatography and spectrophotometry

1986 ◽  
Vol 19 (1) ◽  
pp. 65-74 ◽  
Author(s):  
A.J. Speek ◽  
C.R. Temalilwa ◽  
J. Schrijver
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Vitamin A ◽  
High Performance ◽  
Carotene Content ◽  
Β Carotene

scholarly journals Carrots and Dietary Vitamin A Adequacy

1992 ◽  
Vol 14 (2) ◽  
pp. 1-5 ◽  
Author(s):  
Lilian Portocarrero ◽  
Julieta Quan De Serrano ◽  
Louise Canfield ◽  
Thomas Tarara ◽  
Noel W. Solomons
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Vitamin A ◽  
Latin American ◽  
High Performance ◽  
Dietary Vitamin ◽  
Carotene Content ◽  
Data Set ◽  
Diet Analyses ◽  
Β Carotene

Carrots are a leading source e of vitamin A in the Guatemalan diet. Analyses of carrots using high performance liquid chromatography (HPLC’) indicated that carrots have more than twice the amount of β carotene reported in the Latin American food compositio n tables. The consequence for the recalculation of daily vitamin A intake in a data set of pregnant pert-urban women is a 12% reduction in the number of women consuming <750 RE and a 19% reduction in the number with an intake of <600 RE. To the extent that earlier anayses underestimated the β carotene content of’ carrots, the estimates of vitamin A intake in Latin America have been variably and falsely low, depending on the contribution of carrots to the individuals reported diet.

scholarly journals Carotene and provitamin A content of vegetables sold in Viçosa, MG, Brazil, during spring and winter

2009 ◽  
Vol 45 (3) ◽  
pp. 527-537 ◽  
Author(s):  
Pollyanna Costa Cardoso ◽  
Ceres Mattos Della Lucia ◽  
Paulo César Stringheta ◽  
José Benício Paes Chaves ◽  
Helena Maria Pinheiro-Sant'Ana
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Vitamin A ◽  
High Performance ◽  
Leafy Vegetables ◽  
Provitamin A ◽  
Carotene Content ◽  
A Value ◽  
Β Carotene

This study investigated the α- and β-carotene content and provitamin A value of four leafy vegetables sold at local and street markets in Viçosa, MG, Brazil, in the spring and winter of 2002. Carotenoids were analyzed by high-performance liquid chromatography. α-Carotene was detected in all samples sold during spring, but was only present in a few samples of smooth and curly lettuce and kale in winter. β-Carotene was found in marked quantities in all leafy vegetables analyzed. Duncan's test (α = 5%) showed significantly higher α-carotene content in curly lettuce and vitamin A value in large-leaved watercress in the spring. Mean β-carotene content and vitamin A value were 7544, 8751, 2584, 2792, 8193, and 5338 μg/100 g and 666, 760, 227, 238, 698, and 460 μg RAE/100 g in large-leaved and hydroponic watercress, smooth and curly lettuce, kale and spinach, respectively. All leafy vegetables analyzed represent important sources of provitamin A and supply an important part of the daily requirements of children and adults.

Quantification of Provitamin A Compounds in ChInese Vegetables by High-Performance Liquid Chromatography

1993 ◽  
Vol 56 (1) ◽  
pp. 51-54 ◽  
Author(s):  
B. H. CHEN ◽  
J. R. CHUANG ◽  
J. H. LIN ◽  
C. P. CHIU
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Provitamin A ◽  
Photodiode Array Detection ◽  
Carotene Content ◽  
Green Pepper ◽  
Photodiode Array ◽  
Mustard Green ◽  
Β Carotene

The provitamin A contents of 16 vegetables grown in Taiwan were analyzed by high-performance liquid chromatography with photodiode-array detection. The amounts of the major provitamin A compounds, (β-cryptoxanthin, α-carotene, and β-carotene ranged from 0–6.8, 0–27.7, and 0.6–104.9 (μg/g, respectively. The highest β-carotene content was found in basil, followed by onion fragrant, kale, carrot, spinach, water convolvulus, mustard, green onion, garland chrysanthemum, sweet potato, green pepper, yellow com, mustard stem, lettuce, cabbage, and celeriac. Carrot was the only vegetable found to contain α-carotene while com was the vegetable to contain (β-cryptoxanthin.

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