Analytical recovery of chromium from diet and faeces determined by colorimetry and atomic absorption spectrophotometry

Saha, Dhanonjoy C.; Gilbreath, Rex L.

doi:10.1002/jsfa.2740550311

Cited by 83 publications

(49 citation statements)

References 19 publications

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“…Proximate analyses of the experimental diets were performed following the AOAC procedures (Helrich 1990) as follows: moisture was determined by oven drying at 105ºC for 24 h; crude protein (Nitrogen * 6.25) was determined by micro-Kjeldahl digestion; total lipid was determined by extracting the residue with 40-60ºC petroleum ether for 7-8 h in a Soxhlet apparatus and ash was determined by ignition at 550ºC in a Muffle furnace to a constant weight. Concentration of Co in the tissues, and Cr in the diets and faeces were determined by flame atomic absorption spectrophotometer (Varian Spectra AA240) located in the Saha and Gilbreath (1991), Kaviraj and Ghosal (1998), and Guhathakurta and Kaviraj (2000). Water quality parameters in the experimental tanks were checked following standard procedures of APHA (Anonymous 1995).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Growth and Bioaccumulation of Cobalt in Different Tissues of Common Carp, <I>Cyprinus Carpio</I> (Actinopterygii: Cypriniformes: Cyprinidae), Fed Cobalt-Supplemented Diets

Mukherjee¹,

Kaviraj²

2009

Acta Icth et Piscat

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Section: Methodsmentioning

confidence: 99%

Evaluation of Growth and Bioaccumulation of Cobalt in Different Tissues of Common Carp, <I>Cyprinus Carpio</I> (Actinopterygii: Cypriniformes: Cyprinidae), Fed Cobalt-Supplemented Diets

Mukherjee¹,

Kaviraj²

2009

Acta Icth et Piscat

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“…During days 15 -16, the pigs were surgically fitted with a distal ileal cannula according to previously established procedures (14) . Following a post-surgical recovery period (days [17][18][19][20], the pigs resumed their previous feeding schedule for the duration of the experiment. On days 30 -34 of the experiment, distal ileal effluent samples were collected according to the procedures outlined later.…”

Section: Animals and Experimental Designmentioning

confidence: 99%

Nutrient utilisation and intestinal fermentation are differentially affected by the consumption of resistant starch varieties and conventional fibres in pigs

et al. 2008

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This study examined the influence of different resistant starch (RS) varieties and conventional fibres on the efficiency of nutrient utilisation and intestinal fermentation in pigs. Thirty-six pigs (30 kg) were fed poultry meal-based diets supplemented with 10 % granular resistant corn starch (GCS), granular resistant potato starch (GPS), retrograded resistant corn starch (RCS), guar gum (GG) or cellulose for 36 d according to a completely randomised block design. Distal ileal and total tract recoveries were similar (P. 0·05) among the RS varieties. Distal ileal starch recovery was higher (P,0·05) in pigs consuming the RS diets (27 -42 %) as compared with the control group (0·64 %). Consumption of GCS reduced (P, 0·05) apparent total tract digestibility and whole-body retention of crude protein in comparison with the control group. Consumption of GPS reduced (P,0·05) total tract Ca digestibility and whole-body retention of Ca and P compared with the control group. However, consumption of RCS increased (P,0·05) total tract Ca digestibility compared with the control group. Caecal butyrate concentration was increased (P, 0·05) following consumption of RCS and GG in comparison with the control group. Consumption of all the RS varieties reduced (P,0·05) caecal indole concentrations compared with the control. Caecal butyrate concentrations were positively correlated (P,0·05; r 0·63 -0·83) with thermal properties among the RS varieties. We conclude that nutrient utilisation and intestinal fermentation are differentially affected by the consumption of different RS varieties and types of fibres. Thermal properties associated with different RS varieties may be useful markers for developing RS varieties with specific functionality.Resistant starch and fibre: Nutrients: Butyrate and indole: Pigs Despite a wealth of research in both human subjects (1,2) and various animal model species (3,4) , the relevance of resistant starch (RS) to human health and disease prevention remains unclear. Much of this uncertainty likely stems from the exceptional diversity that is encountered among RS varieties. Although the heterogeneous nature of traditional dietary fibre supplements is well documented, it is equally important to recognise that RS varieties originating from different plant sources and manufactured with alternative processing technologies will possess unique physiochemical properties (5) . RS is generally classified into four distinct types: physically entrapped, inaccessible starch; native granular starch; retrograded starch; chemically modified starch (6) .Due to its physiochemical attributes, RS is a particularly useful functional food additive to manage weight loss (7) , improve insulin sensitivity (8) and reduce dyslipidaemia (9) . Furthermore, RS consumption is believed to improve intestinal health and function by increasing micronutrient absorption and favourably altering bacterial fermentation patterns in the large intestine (10,11) . However, as literature reports do not often stress the importance of starch variety ...

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“…Analyses for DM were carried out according to procedures of the Association of Official Analytical Chemists (AOAC, 1993). Chromium III oxide was determined according to Saha and Gilbreath (1981) by using an atomic absorption spectrometer (SpectrAA-10/20, Varian, Mulgrave, Australia). Intrinsic phytase activity and phytate P content were analysed according to the method of Shen et al (2005).…”

Section: Principles Of Estimationmentioning

confidence: 99%

True phosphorus digestibility and the endogenous phosphorus outputs associated with brown rice for weanling pigs measured by the simple linear regression analysis technique

Yang

Yin

et al. 2007

Animal

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The objectives of this study were to determine true phosphorus (P) digestibility, degradability of phytate-P complex and the endogenous P outputs associated with brown rice feeding in weanling pigs by using the simple linear regression analysis technique. Six barrows with an average initial body weight of 12.5 kg were fitted with a T-cannula and fed six diets according to a 6 £ 6 Latin-square design. Six maize starch-based diets, containing six levels of P at 0.80, 1.36, 1.93, 2.49, 3.04, and 3.61 g/kg per kg dry-matter (DM) intake (DMI), were formulated with brown rice. Each experimental period lasted 10 days. After a 7-day adaptation, all faecal samples were collected on days 8 and 9. Ileal digesta samples were collected for a total of 24 h on day 10. The apparent ileal and faecal P digestibility values of brown rice were affected ( P , 0.01) by the P contents in the assay diets. The apparent ileal and faecal P digestibility values increased from 248.0 to 36.7% and from 235.6 to 40.0%, respectively, as P content increased from 0.80 to 3.61 g/kg DMI. Linear relationships ( P , 0.05), expressed as g/kg DMI, between the apparent ileal and faecal digestible P and dietary levels of P, suggested that true P digestibility and the endogenous P outputs associated with brown rice feeding could be determined by using the simple regression analysis technique. There were no differences ( P . 0.05) in true P digestibility values (57.7^5.4 v. 58.2^5.9%), phytate P degradability (76.4^6.7 v. 79.0^4.4%) and the endogenous P outputs (0.812^0..096 v. 0.725^0.083 g/kg DMI) between the ileal and the faecal levels. The endogenous faecal P output represented 14 and 25% of the National Research Council (1998) recommended daily total and available P requirements in the weanling pig, respectively. About 58% of the total P in brown rice could be digested and absorbed by the weanling pig. Our results suggest that the large intestine of the weanling pigs does not play a significant role in the digestion of P in brown rice. Diet formulation on the basis of total or apparent P digestibility with brown rice may lead to P overfeeding and excessive P excretion in pigs.

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Analytical recovery of chromium from diet and faeces determined by colorimetry and atomic absorption spectrophotometry

Abstract: A BSTRA C T The present study examined whether differences in mineral content of the diet or faecal samples contribute to variation in analytical recovery

Cited by 83 publications

References 19 publications

Evaluation of Growth and Bioaccumulation of Cobalt in Different Tissues of Common Carp, <I>Cyprinus Carpio</I> (Actinopterygii: Cypriniformes: Cyprinidae), Fed Cobalt-Supplemented Diets

Evaluation of Growth and Bioaccumulation of Cobalt in Different Tissues of Common Carp, <I>Cyprinus Carpio</I> (Actinopterygii: Cypriniformes: Cyprinidae), Fed Cobalt-Supplemented Diets

Nutrient utilisation and intestinal fermentation are differentially affected by the consumption of resistant starch varieties and conventional fibres in pigs

True phosphorus digestibility and the endogenous phosphorus outputs associated with brown rice for weanling pigs measured by the simple linear regression analysis technique

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