cryptoxanthin/potato

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The potato carotenoid cleavage dioxygenase 4 catalyzes a single cleavage of β-ionone ring-containing carotenes and non-epoxidated xanthophylls.

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Down-regulation of the potato carotenoid cleavage dioxygenase 4 (StCCD4) transcript level led to tubers with altered morphology and sprouting activity, which also accumulated higher levels of violaxanthin and lutein leading to elevated carotenoid amounts. This phenotype indicates a role of this

Carotenoids and carotenoid esters in potatoes (Solanum tuberosum L.): new insights into an ancient vegetable.

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The carotenoid pattern of four yellow- and four white-fleshed potato cultivars (Solanum tuberosum L.), common on the German market, was investigated using HPLC and LC(APCI)-MS for identification and quantification of carotenoids. In each case, the carotenoid pattern was dominated by violaxanthin,

Carotenoid profiling in tubers of different potato (Solanum sp) cultivars: accumulation of carotenoids mediated by xanthophyll esterification.

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The carotenoid profile of sixty potato cultivars (commercial, bred, old and native cultivars) has been characterised in order to provide information to be used in selective breeding programs directed to improve the nutritional value of this important staple food. Cultivars were segregated into three

Overexpression of the IbOr gene from sweet potato (Ipomea batatas 'Hoang Long') in maize increases total carotenoid and β-carotene contents.

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Nutritional quality of most maize varieties is very low due to the lack of lysine and tryptophan and extremely low provitamin A carotenoids including β-carotene, α-carotene, and β-cryptoxanthin. In this study, we report the successful overexpression of the IbOr gene in H145 and H95 inbred maize

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

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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,

[Effect of green and yellow vegetables on serum carotenoid in children].

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OBJECTIVE To assay the effect of green and yellow vegetables on serum carotenoid concentration and its relation to serum retinol level in children. METHODS A ten-week green and yellow vegetable intervention study was conducted in children aged 5.3 to 6.4 years of two classes in a kindergarten in

Dietary intake of carotenoid isomers in Israel.

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Controversy exists regarding the possible protective role of carotenoids against cancer. Evidence is mainly against all-E-beta-carotene, while there is no evidence against other carotenoids or against mixtures of beta-carotene stereoisomers. Carotenoid isomers could account for the variability in

Maize genotype and food matrix affect the provitamin A carotenoid bioefficacy from staple and carrot-fortified feeds in Mongolian gerbils (Meriones unguiculatus).

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Biofortification to increase provitamin A carotenoids is an agronomic approach to alleviate vitamin A deficiency. Two studies compared biofortified foods using in vitro and in vivo methods. Study 1 screened maize genotypes (n = 44) using in vitro analysis, which demonstrated decreasing

Major fruit and vegetable contributors to the main serum carotenoids in the Spanish diet.

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OBJECTIVE To identify the main sources of serum carotenoids (lutein, zeaxanthin, lycopene, beta-cryptoxanthin, alpha-carotene and beta-carotene) among the fruits and vegetables in the Spanish diet, to be used in the design of food questionnaires and to provide useful information for epidemiological

Latin American food sources of carotenoids.

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Latin America has a wide variety of carotenogenic foods, notable for the diversity and high levels of carotenoids. A part of this natural wealth has been analyzed. Carrot, red palm oil and some cultivars of squash and pumpkin are sources of both beta-carotene and alpha-carotene. beta-carotene is the

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