Biological Utilization of �-Carotene from Amaranth and Leaf Protein in Preschool Children

Devadas, R. P.; Murthy, Nirmala K.

doi:10.1159/000401318

Cited by 23 publications

(9 citation statements)

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“…The most efficient provitamin A carotenoid is β-carotene, which is abundant in yellow and orange fruits, such as mangoes, papayas, and yams, and in green leafy vegetables, such as spinach, kale, sweet potato leaves, and sweet gourd. Consumption of foods rich in β-carotene theoretically can replete people to a healthy vitamin A status [12][13][14][15][16][17].…”

Section: Plant Food As a Source Of Provitamin Amentioning

confidence: 99%

Underutilized β-carotene–rich Crops of Vietnam

Vuong

2000

Food Nutr Bull

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Section: Plant Food As a Source Of Provitamin Amentioning

confidence: 99%

Underutilized β-carotene–rich Crops of Vietnam

Vuong

2000

Food Nutr Bull

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“…Professor Devadas (a respected community-oriented Indian nutritionist) and colleagues reported three controlled community studies using balance techniques for comparing various local green leaves, leaf protein concentrate, and papaya to determine biological utilization among vitamin Adeficient children in southern India. When compared with β-caroteneor vitamin A-fed reference controls, all carotenoid food sources improved serum vitamin A above basal diet levels, although by lesser magnitude than the increase recorded after feeding pure β-carotene or retinol, with dark-green leafy vegetable sources being least effective [22][23][24]. Rao has reviewed other studies in India that demonstrate efficacy of plant foods and suggested explanations for the discrepancies [25].…”

Section: Provitamin a Food Sources: Evidence Of Efficacymentioning

confidence: 99%

Dietary Approaches to the Control of Vitamin A Deficiency: An Introduction and Overview

Underwood¹

2000

Food Nutr Bull

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As a public health problem, deficiency of vitamin A occurs when the habitual intake of bioavailable vitamin A is too little to meet physiological needs under prevailing conditions. Needs are increased during growth periods and when frequent infections cause inefficient utilization of the vitamin. Historical records and recent experience document that improved dietary intake, even when most vitamin A activity comes from provitamin A carotenoids, can correct the problem, especially when such diets contain adequate fat and the subjects are relieved of heavy worm infestation. An epidemiologic evaluation of the entire food chain, consisting of production, procurement, processing, and consumption, provides the framework for selecting suitable dietary approaches. These approaches include homestead food production, centrally or home-based fortified foods, and educational approaches promoting dietary diversification and modification of preparation practices to conserve the vitamin and render it more bioavailable. Even agricultural approaches that select and propagate germ plasma from varieties with increased micronutrient density can be utilized, including, in the future, genetic modifications to increase micronutrient density of vegetable and staple crops. Usually a mixture of intervention strategies will be most effective, particularly when social marketing accompanies efforts to increase consumer acceptance and compliance. Where the ecological and economic context prohibits dietary approaches, or where acute deficiency necessitates an immediate therapeutic response, distribution of vitamin A supplements is needed until suitable food-based approaches become feasible.

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“…It is one of the anomalies of nature and man that the countries with the highest rates of xerophthalmia are among the perennially greenest of the world (Devadas & Murthy, 1978) Whether societies living in northern Thailand epitomize this anomaly is speculative, since sub-clinical deficiencies based on blood retinol tests have not been determined for Thai minority children, and nutritional status investigations in highland northern Thailand have only begun in recent years (Vryhud & Wongcharoen, 1987;Renard, 1988;Surangchit et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Gathering practices of Karen women: questionable contribution to beta-carotene intake

Johnson

Grivetti

2002

International Journal of Food Sciences and Nutrition

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Gathering edible wild plants is widely recognized throughout rural southeast Asia for contributions to micronutrient intakes. Elderly Karen women in two northern Thailand communities (n = 32) were surveyed to determine household gathering practices and use of edible wild plants in the family diet. While all household members gathered most efforts were by women, who collected on average 1.3-3.5 times/week depending on the season. All respondents reported that local availability of wild species with culinary and medicinal value had declined in recent decades. Column chromatography and spectrophotometry were used to determine the beta-carotene content of 22 of the most commonly consumed species. Mean values ranged from 10,290 to 31 microg/100 g sample (858 to 3 microg RE/100 g); 14 species measured at least 2400 microg/100 g (300 microg RE/100 g). Most plants identified with reasonable to high quantities of beta-carotene were eaten raw, steamed for more than 20 min, or were cooked and consumed without the fat source needed to facilitate absorption. The contribution of beta-carotene from these species to Karen diet, therefore, is problematical.

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Biological Utilization of �-Carotene from Amaranth and Leaf Protein in Preschool Children

Cited by 23 publications

References 0 publications

Underutilized β-carotene–rich Crops of Vietnam

Underutilized β-carotene–rich Crops of Vietnam

Dietary Approaches to the Control of Vitamin A Deficiency: An Introduction and Overview

Gathering practices of Karen women: questionable contribution to beta-carotene intake

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