scholarly journals Pigeon (Columba L.) meat iron solubility and availability for absorption in rats

1986 ◽  
Vol 55 (2) ◽  
pp. 409-418 ◽  
Author(s):  
G. O. Latunde-Dada ◽  
R. J. Neale

1. The distribution of iron in 59Fe-labelled pigeon (Columba L.) leg and breast muscle and liver were determined by gel filtration. While the insoluble Fe was between 14 and 25% of the total Fe from the tissues, the haem-Fe represented 79.1% (breast) to 45% (liver) of the total Fe and ferritin was between 5.5% (breast) and 26.5% (liver) of the total Fe.2. The tissue haem-Fe concentration was found to be lower than that determined by gel filtration using the method of Schricker et al. (1982) for non-haem-Fe and obtaining haem-Fe by difference.3. A simulated in vitro digestion procedure showed significantly (P < 0.01) reduced 59Fe solubility from 59Fe-labelled pigeon meat after cooking at 90° for 30 min.4. 59Fe absorption from whole pigeon meat and soluble extract was significantly reduced by cooking when given to Fe-replete rats. Cooking liver, however, slightly improved 59Fe absorption in Fe-replete rats.5.59Fe absorption from the separated pigeon-meat fractions (haemoproteins, ferritin and haemosiderin) was variable but considerably lower than that from whole meat.6. The relative distribution of Fe compounds in meat, the processing conditions they are subjected to and the protein content and composition may all influence the absorption of meat-Fe to some degree.

2019 ◽  
Vol 10 (10) ◽  
pp. 6300-6311 ◽  
Author(s):  
Joana Pico ◽  
Sydney Corbin ◽  
Mario G. Ferruzzi ◽  
Mario M. Martinez

A 10% replacement of wheat flour with banana flour subjected to different processing conditions resulted in from 45.0 to 54.5% higher glucose transport inhibition.


1985 ◽  
Vol 48 (1) ◽  
pp. 35-38 ◽  
Author(s):  
S.W. RIZK ◽  
F.M. CLYDESDALE

Changes in chemical iron profile occurring from pH 2 to 6.5 in a wheat-soy blend, a corn-soy-milk mix, and a soy-extended beef patty were investigated. Iron solubility in these products, as affected by in vitro digestion with pepsin, was dependent on a combination of ligand, iron source, pH and food. The greatest solubilizing capacity of the ligands added was provided by ascorbic acid at pH 2 and 4, and by citric acid at pH 6. Improvements in percent soluble iron were related to pepsin digestion and the presumed appearance of protein degradation products.


1979 ◽  
Vol 59 (4) ◽  
pp. 813-816 ◽  
Author(s):  
U. I. OJI ◽  
D. N. MOWAT ◽  
J. E. WINCH

Thermoammoniation of corn stover increased rate and extent of in vitro digestion over ammoniation at ambient temperature. Increasing moisture content up to at least 60% improved response to ammoniation. Processing at elevated temperatures did not reduce the amount of NH3 required. Optimum processing conditions appear to be 3 to 4% NH3, 60% H2O and 90 °C for 6 to 12 h.


2011 ◽  
Vol 127 (2) ◽  
pp. 716-721 ◽  
Author(s):  
K. Argyri ◽  
E. Theophanidi ◽  
A. Kapna ◽  
C. Staikidou ◽  
G. Pounis ◽  
...  

1986 ◽  
Vol 55 (2) ◽  
pp. 419-426 ◽  
Author(s):  
G. O. Latunde-Dada ◽  
R. J. Neale

1. Soya-bean proteins were used to replace 30 and 50% of the protein from 59Fe-labelled pigeon (Columbn L.) and chicken meat, and the solubility of the meat 59Fe in vitro and its absorption in vivo in rats in the presence and absence of soya-bean proteins were measured.2. Replacement of part of the chicken meat by soya-bean proteins reduced 59Fe solubility from chicken meat at all stages during simulated in vitro digestion.3. 59Fe absorption from 59Fe-labelled chicken meat when given to both Fe-replete and Fe-deficient rats was reduced in the presence of soya-bean proteins but was unaffected by the presence of casein or bovine serum albumin. 59Fe-absorption from pigeon meat in the presence of soya-bean proteins was not reduced to the same extent as that from chicken meat.4. There was no significant effect of soya-bean proteins on 59Fe-labelled haemoglobin Fe absorption in vivo in Fe-replete rats.5. Absorption of 59Fe from the isolated haemoproteins from chicken meat was unaffected by soya-bean proteins but 59Fe absorption from the main non-haem-Fe fractions was strongly inhibited, particularly from haemosiderin.


Rangifer ◽  
1985 ◽  
Vol 5 (2) ◽  
pp. 6 ◽  
Author(s):  
C. Rehbinder ◽  
P. Ciszuk

<p>In order to increase the fodder available for roedeer during wintertime, late harvested hay was placed on racks early in November in three consecutive years. Freeezing kept the hay dry and fresh during all three winters. In the first winter, with much snow, the bulk of the hay was consumed whereas consumption in the two subsequent mild winters was low and selective. The crude protein content of the hay was low (3.5 - 8.4% dry matter). Metabolizable energy estimated from digestion in vitro was 3.5 &mdash; 5.6 MJ per kg dry matter. Rumen liquor from roe deer during a mild winter gave lower in vitro digestion than liquor from sheep fed with ordinary rations. The value of this poor hay for roe deer is discussed with respect to the animals requirements, seasonal adaption, the energy and protein content of the hay, water consumption and normal behavior. The results indicate that late harvested hay may be more suitable than regularly harvested hay or concentrates to help roe deer to survive spells of severe winter conditions. With late harvested hay placed out at several localized feeding sites, the risks of indigestion and dehydration, associated with a more concentrated, feed, are minimized and the ranking among the roe deer in particular will be less important and thus more animals will have improved prospects of gaining access to the fodder.</p><p>Tilskottsutfodring av r&aring;djur (Capreolus capreolus L) med sent skordat ho. En pilotstudie.</p><p>Abstract in Swedish / Sammanfattning: I avsikt att, for r&aring;djur, oka m&aring;ngden tillg&aring;ngligt foder under vintertid, skordades och h&aring;ssjades ho i borjan av november under tre p&aring; varandra foljande &aring;r. Hoet fros torn och holl sig f&aring;rskt alla vintrarna. Forst&aring; vintern med mycket sno konsumerades huvuddelen av hoet medan de tv&aring; foljande milda vintrarna konsumptionen var l&aring;g och selektiv. M&aring;ngden r&aring;protein i hoet var l&aring;gt (3.5 &mdash; 8.4 % i torrsubstans). Inneh&aring;llet av oms&aring;ttbar energi ber&aring;knad fr&aring;n digestion in vitro var 3.5 &mdash; 5.6 MJ per kg torrsubstans. V&aring;mv&aring;tska fr&aring;n r&aring;djur under en mild vinter gav lagra in vitro digestion &aring;n v&aring;mv&aring;tska fr&aring;n ordin&aring;rt utfodrade f&aring;r. V&aring;rdet av det mycket sent skordade hoet for r&aring;djur diskuteras med utg&aring;ngspunkt fr&aring;n djurens behov, s&aring;songm&aring;ssiga adaption, energi- och proteininneh&aring;ll i hoet, vattenkonsumtion och normala beteende. Resultat&eacute;n pekar p&aring; att, sent skordat ho kan vara l&aring;mpligare &aring;n p&aring; normal tid skordat ho eller kraftfoder att hj&aring;lpa r&aring;djur att overleva perioder med sv&aring;ra vinterforh&aring;llanden. Med sent skordat och h&aring;ssjat ho, vilket gjorts tillg&aring;ngligt p&aring; ett flertal utfodringsplatser, minskar riskerna for v&aring;mindigestion och dehydrering, forenade med en mer hogv&aring;rdig utfodring, samtidigt som djurens inbordes rangordning blir mindre betydelsefull. Det senare innebarande att fler djur f&aring;r tillg&aring;ng till fodret.</p>


Author(s):  
D.G. Clarke

A current review of some general aspects of herbage quality and its evaluation is presented. It is concluded that the two-stage in vitro digestion procedure is a reliable predictor of in viva digestibility, and that the more time-consuming chemical analyses can be used to indicate changes in the herbage which may explain observed digestibility changes.


Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1365
Author(s):  
Yaya Wang ◽  
Lu Dong ◽  
Yan Zhang ◽  
Junping Wang ◽  
Jin Wang ◽  
...  

Protein is one of the three major macronutrients and is essential for health. The reaction of α-dicarbonyl compounds (α-DCs) with glutenin during heat processing can modify its structure, thereby reducing its digestibility. Furthermore, advanced glycation end products (AGEs) formed by the Maillard reaction are associated with long-term diabetes-related complications. In this study, we established a heat processing reaction system for α-DCs and glutenin by simulating common food processing conditions. An in vitro digestion model was used to study the digestibility of glycated glutenin; whereupon the effects of the digestion products on macrophage inflammatory response were further investigated. It was found that reaction conditions, including temperature, treatment duration, pH, and reactant mass ratio, can significantly affect the digestibility of glycation glutenin, in which the mass ratio of reactants has the most significant influence. We demonstrated that when the mass ratio of glutenin to methylglyoxal (MGO) was 1:3, the level of inflammation induced by glycated glutenin was the highest. The mass ratio of reactants significantly affects the digestibility of glycation glutenin and the level of macrophage-induced inflammatory response. This suggests that it is possible to protect the nutritional value of protein and improve food safety by controlling the heat processing conditions of wheat products.


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