Nutrient composition of banked human milk in brazil and influence of processing on zinc distribution in milk fractions

Góes, Heloı́sa C.A; Torres, Alexandre Guedes; Donangelo, Carmen M.; Trugo, N. M. F.

doi:10.1016/s0899-9007(02)00813-4

Cited by 57 publications

(43 citation statements)

References 22 publications

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“…18 Defrosting, pasteurization and freezing are procedures that can affect several different nutrients contained in human. 19 In the present study the retinol content of processed milk reduced with respect of the pre-pasteurization sample, as was found by Góes et al 8 Furthermore, the retinol level in the processed milk (36.6±26.1 µg/100 ml) was also similar to the 31.46 µg/100 ml found in the milk at the HMB at the Instituto Fernandes Figueira RJ. 8 The retinol lost during processing is probably the result of exposure to light during freezing and rebottling since vitamin A is photosensitive and the processing takes place in a very well-lit environment.…”

Section: Discussionsupporting

confidence: 89%

“…Just one study describes concentrations considered inadequate (< 1.1mol/l). 8 It is important to investigate whether the same occurs at other HMB and if so to what extent. Furthermore, it is imperative to verify the vitamin A nutritional coverage of the milk offered to infants, in particular those special cases who are exclusively fed with milk from the HMB, such as preterms.…”

Section: Original Articlementioning

confidence: 99%

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Efeito do processamento do leite humano sobre os níveis de retinol

Ribeiro¹,

Melo²,

Pristo³

et al. 2005

J. Pediatr. (Rio J.)

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Objectives: To analyze the effect of processing on the vitamin A levels of milk that is donated to the Human Milk Bank at the University Maternity Hospital, and to evaluate whether this milk supplies the infants vitamin A requirement.Methods: Sixty milk samples from the Human Milk Bank were divided into two equal portions. One milk portion was extracted prior to processing, while another fraction was subjected to pasteurization and later extracted. The samples were analyzed using high performance liquid chromatography. Analysis with Students t test indicated that the difference between mean retinol levels was statistically significant at the p < 0.05 level. Results:The retinol content found in the milk prior to processing was 55.4±34.0 µg/100 ml, whereas for the processed milk this level was 36.6±26.1 µg/100 ml (p < 0.001).Conclusion: It was found that retinol loss occurs during milk processing and that the milk from the Human Milk Bank does not meet infants vitamin A requirement.

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Section: Discussionsupporting

confidence: 89%

Section: Original Articlementioning

confidence: 99%

Efeito do processamento do leite humano sobre os níveis de retinol

Ribeiro¹,

Melo²,

Pristo³

et al. 2005

J. Pediatr. (Rio J.)

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“…A concentração média de vitamina A observada foi de 1,76±0,85 µmol/L, mostrando-se superior à média encontrada por Menezes & Trugo 18 e Góes et al 19 , em estudos realizados no leite maduro de nutrizes brasileiras, cuja concentração média encontrada foi 1,4±0 µmol/L e 1,51 µmol/L, respectivamente.…”

Section: Discussionunclassified

Vitamin A concentration in mature human milk

Souza¹,

Saunders²,

Dolinsky³

et al. 2012

J Pediatr (Rio J)

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Objective: To quantify vitamin A levels in mature milk of 196 nursing women who were treated at the Maternity School of Rio de Janeiro and to evaluate its correlation with sociodemographic variables and degree of nutrition knowledge. Methods:To quantify retinol concentrations, 10 mL of mature milk were collected by manual expression of one breast, 2 hours after the last feed, in the morning period. Values below 1.05 µmol/L and 2.3 µmol/L were considered inadequate to meet satisfactory intake and to constitute vitamin A liver reserve, respectively. The following variables were also assessed: sex, age, familiar income, maternal education, basic sanitation conditions, number of people in the household, maternal age, prenatal care, and degree of nutrition knowledge.Results: Among the 196 lactating mothers analyzed, the average vitamin A concentration observed in mature milk was 1.76±0.85 µmol/L and prevalence of vitamin A deficiency was observed in 20.5% mothers. There was no significant difference between vitamin A levels in maternal milk and the variables socioeconomic status and nutrition knowledge. Only 38.9% of lactating women presented enough vitamin A concentrations in milk for the infants' liver reserves (2.3 µmol/L). Conclusion:These findings reveal high prevalence of inadequate vitamin A nutritional status of mothers and infants, consistent with the national prevalence reported in women of childbearing age and Brazilian children, and that the intervention measures to fight this shortage should be extended to all pregnant and postpartum women, regardless of sociodemographic conditions and degree of nutrition knowledge, in order to improve the health of mother and child.J Pediatr (Rio J). 2012;88(6):496-502: Vitamin A, human milk, income, maternal education. ResumoObjetivo: Quantificar a concentração de vitamina A no leite maduro de nutrizes assistidas em maternidade pública no município do Rio de Janeiro e avaliar a sua relação com variáveis sociodemográficas e grau de conhecimento de nutrição.Métodos: Para a quantificação do retinol, foram coletadas amostras de 10 mL de leite maduro. Os pontos de corte adotados para identificação da deficiência de vitamina A e constituição de reserva hepática foram de < 1,05 µmol/L e ≥ 2,3 µmol/L, respectivamente. Foram avaliadas, ainda, as variáveis: grau de conhecimento de nutrição, sexo, idade, renda familiar, escolaridade, condições de saneamento básico, número de moradores na residência, idade materna e assistência pré-natal. Resultados:Participaram do estudo 196 nutrizes, com concentração média de vitamina A no leite maduro de 1,76±0,85 µmol/L e prevalência de 20,5% de deficiência de vitamina A. Não houve diferença na concentração de vitamina A no leite das nutrizes segundo as variáveis sociodemográficas e conhecimento de nutrição. Apenas 38,9% das nutrizes apresentavam concentração de vitamina A no leite suficiente para constituição de reserva hepática dos lactentes. Conclusão:Os achados aqui apresentados revelam alta prevalên-cia de inadequação do estado nu...

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“…O material foi pesado e os sólidos totais expressos em g/L. 14 As cinzas foram determinadas pela carbonização lenta das amostras em fogo direto, incineração em mufla à 550ºC por 12 horas, seguida de pesagem. O resultado foi expresso em g/L.…”

Section: Introductionunclassified