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1.
Acta amaz ; 26(3)1996.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454591

ABSTRACT

Competition experiments were carried out between different cultivars of manioc (Manihot esculentaCrantz) in the terra firme ecosystem (Manaus, Amazonas, Brazil), with the productivity and pro-vitamin A carotene content. Roots from sevem cultivars of yellow manioc were selected for the identification and quantification of carotenes with vitamin A activity, according to the method described by Rodriguez. Pro-vitamin A loss due to processing and storage of the flour was also determined. The presence of three b - carotene isomers was noted (13 - cis - - carotene, all trans - carotene and 9 - cis - - carotene). The amount of vitamin A present in the roots varied from 4.4 to 18.8 retinol equivalents. The loss of vitamin A due to processing was high, ranging from 25.3 to 40.0 %. The storage of the roots for six months in transparent plastic bags at room temperature and exposure to the sun, resulted in a total degradation of the carotenoids. The results allow one to conclude that three cultivars (IM 232; IM 104 and BGM 021) containt the highest pro-vitamin A content.


Foram conduzidos experimentos de competição entre cultivares de mandioca (Manihot esculentaCrantz) em ecossistema de terra firme (Manaus - Amazonas), com objetivo de obter melhores cultivares de mandioca com relação a produtividade e teor de caroteno pró-vitamínico A. Raízes de sete cultivares de mandioca amarela foram selecionadas para identificação e quantificação de carotenos com atividade de vitamina A, mediante o método descrito por Rodriguez. Observou-se, também, as perdas de pró-vitamina A pelo processamento e armazenamento de farinha. Constatou-se a presença de três isômeros do - caroteno (o 13 - eis - - caroteno, o - caroteno todo trans e o 9 - eis - - caroteno U). Quanto aos teores de vitamina A, expressos em equivalente de retinol, nas raízes variaram de 4,4 a 18,8. Com relação a perda de atividade da vitamina A pelo processamento variou de 25,0 a 40,0 %, enquanto que o armazenamento por 6 meses em sacos plásticos transparentes, à temperatura ambiente e à exposição de luz, resultou em degradação total de seus carotenóides. Os resultados permitem concluir que três cultivares (IM 232; IM 104 e BGM 021) apresentaram os maiores teores de pró-vitamina A.

2.
Acta amaz ; 201990.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1454340

ABSTRACT

Two hundred and fifty children between the ages of 4 and 6 years were studied from a creche for the use of workers in the Industrial District of Manaus (Amazonas), Brazil. The parents of these children were considered to be. from the, low income, bracket. The nutritional status was determined according to the Gomez (1956) and Waterlow et al. (1977) classifications. The nutrient intake, was determined by means of the 24 - hour recall and weighed methods. According to the Gomez and Waterlow classifications, 62,8% and 61,6% of the children, respectively, were in a normal nutritional state. The results showed that the protein consumption was 92,98% of the ideal intake, of which 50,01% was of animal origin. The energy intake was only 68,17% of the level recomendedby FAO/WHO (1974). The calcium, riboflavin and vitamin C intakes were 85,89%, 82,73% and 89,9% of the recomended intakes respectively. The iron, thiamin and niacin intakes were lower than 80% of the FAO/WHO (1974) recomended intakes.


Foram estudadas 250 crianças na faixa etária de 4 a 6 anos de uma creche destinada a filhos de trabalhadores do Distrito Industrial de Manaus, AM. Os pais dessas crianças foram consideradas de baixa renda. O estado nutricional foi avaliado segundo os critérios de Gomez (1956) e Waterlow et al. (1977); para o inquérito alimentar foi utilizado o método recordatório de 24 hs e pesagem direta dos alimentos. Os resultados indicaram qe a maioria das crianças, 62,8% estavam em estado nutricional normal pela classificação de Gomez (1974). O cálcio, a riboflavina e a vitamina C apresentaram índices de adequação de 85, 89%, 82, 73% e 89,9% respectivamente. Ferro, tiamina e niacina apresentaram índices inferiores a 80% do recomendado FAO/OMS (1974).

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