Dialysability of Magnesium and Calcium from Hospital Duplicate Meals: Influence Exerted by Other Elements

Abstract

Total and dialysable magnesium and calcium levels and corresponding dialysabilities were measured in duplicate meals (n = 108) during 36 consecutive days. The interaction exerted by other nutrients and energy on them was also performed. Total mean magnesium and calcium fractions of 113.9 +/- 98.3 and 337.2 +/- 278.9 mg/meal respectively, were found. The Mg and Ca levels supplied by meals are positively (p < 0.05) correlated with macronutrient contents (carbohydrates and proteins). The mean dialysable Mg and Ca fractions were 56.9 +/- 36.3 and 127.4 +/- 112.3 mg/meal (50.4 +/- 13.2 and 37.8 +/- 10.7% as dialysabilities, respectively). Total Mg and Ca levels are significantly correlated with corresponding element dialysabilities (p < 0.05). For both minerals, significant correlations between their total and dialysable fractions and between their dialysable level and dialysabilities were noted (p < 0.01). The mean Mg and Ca daily dietary intakes (DDI) were 341.7 +/- 68.0 and 1,011.6 +/- 424.4 mg/day, respectively. For Ca and Mg the existence of similarities in their behaviour in meals and absorptive processes has been found. Duplicate meals with raw vegetables are good sources of bioaccessible Mg. High Ca dialysability has been found in the analysed meals. The fish and products constitute a good source of bioaccessible Ca. Mg, Ca, zinc, and chromium levels enhanced significantly the Mg dialysability. The Ca dialysability rose significantly with dialysable Ca and chromium fractions (p < 0.05).

Influence of milk ultrafiltration on Ca, Mg, Zn and P levels in fermented goats’ milk

“…NavarroAlarcón et al (2011) observed that Mg levels in goat and cow milk fermented products were linearly correlated with Ca and Zn concentrations. Similarly, a significant and linear correlation between Mg and Ca levels was previously reported by others in different food groups (Jodral-Segado et al, 2003;Navarro-Alarcón et al, 2007) and hospital duplicate meals (Velasco-Reynold et al, 2010). In the same way, Velasco-Reynold et al (2008) had previously encountered a positive correlation among Zn and P levels in hospital duplicate meals.…”

Synergism between Iron and Magnesium in Enteral Feeding Formulation Optimized for the Availability of Minerals by Response Surface Methodology

“…Yang et al [33] in a metanalise study, in that the use of the fibers was appraised in formulas of enteral feeding, the balances showed that there was reduction of the time of internment hospital in transplanted patients of liver and of patients with abdominal surgical intervention and a control was observed in the transplanted patients of liver for the cases of diarrhea and infection. Velasco-Reynold et al [34] have been showed the mean magnesium dialysability found in duplicate meals in hospital (daily, lunch, dinner) was 13.2% per meal. The dark green vegetables and vege-tables in general are primary sources of bioavailable magnesium in daily diet.…”

Methods for Assessing Aspects of Carotenoid Bioavailability

“…Occasionally, an additional step simulating chewing and enzyme digestion during the oral phase with saliva containing -amylase is included [92]. This in vitro technique has been used later for a variety of compounds, including various elements [93,94], amino acids [95], phytosterols [96], and carotenoids ( Table 1). In order to determine the amount of a compound that is released from the matrix, the amount of carotenoids emulsified into the aqueous phase, i.e.…”