Estimated Dietary Intakes of Vitamin B-6

Driskell, Judy A.; Chrisley, Barbara M.

doi:10.1007/978-1-4684-9901-8_12

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…Analyzed values of vitamin B-6 content of some foods were lower than the USDA database values while others were higher. Considerable variation in vitamin B-6 content may occur due to differences in growing conditions, varieties, food preparation and processing, and cooking methods (Lushbough et al 1959;Schroeder 1971;Driskell and Chrisley 1981;Leklem 1991;Driskell 1994;Williams 1996).…”

Section: Vitamin B-6 Content Of Foodsmentioning

confidence: 99%

“…Moreover, because of differences in cooking methods, varieties, growing conditions and locations (Driskell 1994), collection of this information and construction of new databases will ensure compatibility with other databases and systems (Greenfield and Southgate 1992).…”

Section: Introductionmentioning

confidence: 99%

“…This nutrient has received much attention during the last decade as it relates to health and disease (Driskell 1994). In order to determine the vitamin B-6 intakes of Indonesians, information about the vitamin B-6 content of foods consumed by this population is essential.…”

Section: Introductionmentioning

confidence: 99%

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FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN¹

Setiawan

Giraud

Driskell

2000

Journal of Food Quality

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Food sources of vitamin B-6, commonly consumed by 77 children (age =8-9 years) in Bogor, West Java, Indonesia, were analyzed for total vitamin B-6 content using Saccharomyces uvarum, and compared with the vitamin B-6 values of the USDA Nutrient Database for Standard Reference. The total vitamin 8-6 analyzed values for these foods (mg/lOO were significantly lower than the USDA database values. The mean vitamin B-6 intakes of the subjects calculated using analyzed values (0.5710.26 mg/day) were significantly lower (P

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Section: Vitamin B-6 Content Of Foodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN¹

Setiawan

Giraud

Driskell

2000

Journal of Food Quality

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The nutrient intakes of pregnant and lactating mothers of good socio-economic status in Cambridge, UK: some implications for recommended daily allowances of minor nutrients

1986

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1. Forty-two mothers from social classes I, I1 and IIInon-manual and twenty-one from social classes IIImanual (M), IV and V were studied longitudinally. The mean daily nutrient intakes in months 4-9 of pregnancy, months 2 4 of lactation and 3 and 6 months post-lactation are presented and are compared with the U K and the US recommended daily allowances (RDA).2. The quality of the diets (nutrients per 4184 kJ (1000 kcal)) was found to be better than that of other adult female populations studied in the UK, except for a group of dietitians.3. The mean daily intakes of nutrients for which there are UK RDA were almost all greater than 100% of the RDA. The exceptions were iron, which in the manual group (social classes IIIM, IV and V) was 85% of the RDA in pregnancy and 75% post-lactation, and vitamin D.4. Among the nutrients for which there are US, but not UK RDA, only phosphorus and vitamin B,, intakes were greater than 100% of the RDA in both groups at all stages of the study. Intakes of other nutrients were below the RDA: pantothenate 7G91, vitamin B,, zinc, vitamin E and copper 4G72, folate 2144, and biotin <20% of the RDA.5. The bases of the RDA for adult women were examined; for most nutrients the information is limited. It was concluded that the RDA for magnesium, vitamin E and pantothenate are probably higher than necessary and that deficiency is unlikely; that zinc, copper, vitamin B, and folate are probably 'marginal' nutrients for 'at risk' groups; and that information on biotin is insufficient even roughly to assess the dietary requirement.Recommended daily allowances (RDA) are normally set at levels believed to cover the needs of the majority of the population.. The Department of Health and Social Security (DHSS) (I 979) defines them as 'the amount of the nutrient which should be provided per head in a group of people if the needs of practically all members of the group are to be met', and in the USA the National Research Council (1980) Food and Nutrition Board defines them as 'the level of intake . . . considered . . . adequate to meet the . . . needs of practically all healthy persons'.There are three main bases for establishing RDA: knowledge of the intakes of apparently normal, healthy populations and of populations known to be deficient; knowledge of the amounts required to cure clinical or biochemical signs of deficiency; and studies of metabolism such as measurement of rates of nutrient turnover, or of levels required to maintain metabolic balance or tissue saturation. Such information is used to establish an average requirement for the population, which is then increased by a factor to allow for variability of requirement within that population, and a further factor to allow for inefficient utilization (poor absorption, inefficient conversion of precursors, etc.).The tendency therefore is to set RDA higher rather than lower, and to set them at levels greater than the needs of many individual members of the population. This tendency may be exaggerated when information on which to base estimates o...

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Vitamin B6 utilization in active and inactive young men

Dreon¹,

Butterfield²

1986

The American Journal of Clinical Nutrition

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Two groups (22-37 yr) were studied to investigate the use of vitamin B6 with exercise. Four trained men (T) were confined and studied after they ran 10 and 5 miles/day, for two 4-wk periods. They were compared with six free-living inactive men (S) consuming the same diet that provided 4.2 mg of vitamin B6 each day. N-acetyl-L-methionine, was given (60 mg/kg) as a Vitamin B6 challenge on day 28 of each period, and 24-h urinary 4-pyridoxic acid (4-PA) and methionine metabolites were determined before and after the challenge. Basal 4-PA excretion was significantly lower (p less than or equal to 0.05) in T than in S. In T, postmethionine 4-PA was greater than basal, while in S, postmethionine 4-PA was lower. Compared with prechallenge, postchallenge metabolites decreased in T and increased in S. Basal 4-PA excretion provides no conclusive evidence of increased need for vitamin B6 in athletes: the postload excretion suggests that exercise may promote storage of the vitamin that is available for redistribution with increased need.

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Estimated Dietary Intakes of Vitamin B-6

Cited by 3 publications

References 32 publications

FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN¹

FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN¹

The nutrient intakes of pregnant and lactating mothers of good socio-economic status in Cambridge, UK: some implications for recommended daily allowances of minor nutrients

Vitamin B6 utilization in active and inactive young men

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Estimated Dietary Intakes of Vitamin B-6

Cited by 3 publications

References 32 publications

FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN1

FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN1

The nutrient intakes of pregnant and lactating mothers of good socio-economic status in Cambridge, UK: some implications for recommended daily allowances of minor nutrients

Vitamin B6 utilization in active and inactive young men

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Product

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FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN¹

FOOD SOURCES OF VITAMIN B‐6 OF A GROUP OF INDONESIAN CHILDREN¹