Zinc, iron and phytic acid levels of some popular foods consumed by rural children in Sri Lanka

Karunaratne, Anjani M.; Amerasinghe, Priyanie H.; Ramanujam, V. M. Sadagopa; Sandstead, Harold H.; Perera, P. A. J.

doi:10.1016/j.jfca.2008.02.006

Cited by 16 publications

(18 citation statements)

References 18 publications

(16 reference statements)

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“…The molar ratio obtained for (PA)/(Zn) in rough raw rice as 13.9 ± 2.6 by Karunaratne et al (2008) is in agreement with our values for brown rice. The values obtained by Liang et al (2007) in China for the molar ratio of (PA)/(Zn) in brown rice varied from 27.0 -66.6 with a mean value of 42.9 and is higher than the results in the present study (range 8.3 -12.5 and mean 10.1).…”

Section: September 2016supporting

confidence: 91%

“…9.23 -18.9 in polished rice) are lower than those previously reported by Karunaratne et al (2008) (i.e. 8 -42).…”

Section: September 2016contrasting

confidence: 58%

“…Most rice varieties obtained from Bathalagoda had a high zinc content ( Values of zinc content were given in dry weight basis The overall mean value for zinc content (3.18 ± 0.45 mg/100 g) at both locations when compared with those reported from other countries ( Table 4), shows that the results of the present study are slightly lower than those from Australia and the International Rice Research Institute (IRRI), while it is slightly higher than in certain other countries including those previously reported by Karunaratne et al (2008) in Sri Lanka. This may be due to the fact that in the study by Karunaratne et al (2008) varieties were analysed (NIV only).…”

Section: Overall Analysis Of Zinc Content In Rice Varieties Obtained contrasting

confidence: 44%

“…This may be due to the fact that in the study by Karunaratne et al (2008) varieties were analysed (NIV only).…”

Section: Overall Analysis Of Zinc Content In Rice Varieties Obtained mentioning

confidence: 99%

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Zinc content and prediction of bio-availability of zinc in some locally grown rice (Oryza sativa L.) varieties in Sri Lanka

Herath¹,

Rajapakse²,

Wimalasena³

et al. 2016

J. Natn. Sci. Foundation Sri Lanka

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Abstract:Rice is the staple food in Sri Lanka and the country has a large number of traditional and improved rice varieties. Since their zinc content and bio-availability has not been studied systematically, the present study focused on the zinc content in some traditional rice varieties with high demand and also some improved rice varieties, and their predictable bioavailability.Thirty nine rice varieties from Bombuwala and Bathalagoda Regional Agricultural Research and Development Centres, grown during Yala (March -August, 2006) and Maha were analysed for stable high zinc rice varieties. Mean zinc content (mg/100 g, on dry weight basis) in the varieties from Bathalagoda varied from 2.17 (Masuran) to 4.49 (Wanni Dahanala), while in the varieties from Bombuwala it varied from 2.46 (Bg 352) to 3.71 (Dahanala) with average values of 3.19 ± 0.55 and 3.11 ± 0.32, respectively. Overall mean zinc content (mg/ 100 g, on dry basis) in the two locations varied from 2.51 (Masuran) -3.91 (Kalu Bala Wee) with an average value of 3.18 ± 0.45.was observed with respect to the site, season, variety, site*var and ses*var in two way ANOVA, while site*ses*var in three way ANOVA. The reduction of zinc and phytic acid contents in the polished rice varieties (at polishing rate 8 -10 %) were 18.2 -60.7 % and 18.8 -40.8 %, respectively between zinc and phytic acid. A moderate bio-availability of zinc was shown by the molecular ratio of zinc:phytic acid and these values ranged from 8.3 -12.5 and 9.3 -18.9 in brown rice and polished rice, respectively.

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Section: September 2016supporting

confidence: 91%

“…9.23 -18.9 in polished rice) are lower than those previously reported by Karunaratne et al (2008) (i.e. 8 -42).…”

Section: September 2016contrasting

confidence: 58%

Section: Overall Analysis Of Zinc Content In Rice Varieties Obtained contrasting

confidence: 44%

“…This may be due to the fact that in the study by Karunaratne et al (2008) varieties were analysed (NIV only).…”

Section: Overall Analysis Of Zinc Content In Rice Varieties Obtained mentioning

confidence: 99%

See 2 more Smart Citations

Zinc content and prediction of bio-availability of zinc in some locally grown rice (Oryza sativa L.) varieties in Sri Lanka

Herath¹,

Rajapakse²,

Wimalasena³

et al. 2016

J. Natn. Sci. Foundation Sri Lanka

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show abstract

“…For example, research has shown that extent of decortication of millet in Sahelian West Africa are highly dependent on the woman operator of the mortar and pestle [37]. The zinc and phytate content of raw rice samples obtained from local markets in Sri Lanka was found to differ 10-fold, due in part to the degree of milling, polishing and parboiling [39]. In Bangladesh, 16% of the Zn present in milled rice was lost upon cooking when the excess cooking water was discarded [40].…”

Section: Discussionmentioning

confidence: 99%

Estimating the Global Prevalence of Inadequate Zinc Intake from National Food Balance Sheets: Effects of Methodological Assumptions

2012

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BackgroundThe prevalence of inadequate zinc intake in a population can be estimated by comparing the zinc content of the food supply with the population’s theoretical requirement for zinc. However, assumptions regarding the nutrient composition of foods, zinc requirements, and zinc absorption may affect prevalence estimates. These analyses were conducted to: (1) evaluate the effect of varying methodological assumptions on country-specific estimates of the prevalence of dietary zinc inadequacy and (2) generate a model considered to provide the best estimates.Methodology and Principal FindingsNational food balance data were obtained from the Food and Agriculture Organization of the United Nations. Zinc and phytate contents of these foods were estimated from three nutrient composition databases. Zinc absorption was predicted using a mathematical model (Miller equation). Theoretical mean daily per capita physiological and dietary requirements for zinc were calculated using recommendations from the Food and Nutrition Board of the Institute of Medicine and the International Zinc Nutrition Consultative Group. The estimated global prevalence of inadequate zinc intake varied between 12–66%, depending on which methodological assumptions were applied. However, country-specific rank order of the estimated prevalence of inadequate intake was conserved across all models (r = 0.57–0.99, P<0.01). A “best-estimate” model, comprised of zinc and phytate data from a composite nutrient database and IZiNCG physiological requirements for absorbed zinc, estimated the global prevalence of inadequate zinc intake to be 17.3%.Conclusions and SignificanceGiven the multiple sources of uncertainty in this method, caution must be taken in the interpretation of the estimated prevalence figures. However, the results of all models indicate that inadequate zinc intake may be fairly common globally. Inferences regarding the relative likelihood of zinc deficiency as a public health problem in different countries can be drawn based on the country-specific rank order of estimated prevalence of inadequate zinc intake.

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Biotechnology and Nutritional Improvement of Crops

Farré

Gómez-Galera

Naqvi

et al. 2012

Encyclopedia of Sustainability Science and Technology

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Zinc, iron and phytic acid levels of some popular foods consumed by rural children in Sri Lanka

Cited by 16 publications

References 18 publications

Zinc content and prediction of bio-availability of zinc in some locally grown rice (Oryza sativa L.) varieties in Sri Lanka

Zinc content and prediction of bio-availability of zinc in some locally grown rice (Oryza sativa L.) varieties in Sri Lanka

Estimating the Global Prevalence of Inadequate Zinc Intake from National Food Balance Sheets: Effects of Methodological Assumptions

Biotechnology and Nutritional Improvement of Crops

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