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Friday, July 24, 2020 | History

3 edition of In vitro and in vivo experiments on the digestibility of raw and heat-treated egg white. found in the catalog.

In vitro and in vivo experiments on the digestibility of raw and heat-treated egg white.

Essie White Cohn

In vitro and in vivo experiments on the digestibility of raw and heat-treated egg white.

by Essie White Cohn

  • 37 Want to read
  • 27 Currently reading

Published in Chicago .
Written in English

    Subjects:
  • Eggs as food.,
  • Digestion.

  • Classifications
    LC ClassificationsTX556.E4 C59
    The Physical Object
    Paginationviii, 110 l.
    Number of Pages110
    ID Numbers
    Open LibraryOL4230540M
    LC Control Number80510872

      In vitro fertilization By Medical Perspective:In vivo means that fertilization which is occurring in human body or in the body of sexually reproducing organisms. (Natural/Normal method of reproduction)In biological terms: Fertilization of a ripe egg within the uterus of a fertile donor female, rather than in an artificial medium, for subsequent nonsurgical transfer to an infertile recipient. Ideally, food digestion should be studied in vivo on humans but this is not always ethically and financially possible. Therefore, simple in vitro digestion models mimicking the gastrointestinal tract have been proposed as alternatives to in vivo experiments.

    1. A new in vitro method using the intestinal fluid of the pig for predicting the digestibility of diets was proposed. 2. A g sample of pig diet was placed in a ml Erlenmeyer flask, 20 mg pepsin (EC ) in 10 ml M-hydrochloric acid was added, and the mixture was incubated for 4 h at 37°.Then, after neutralization with M-sodium hydroxide, 10 ml of intestinal fluid was.   In vitro digestibility procedures. In vitro procedures were modified from a two-step IVID (Boisen and Fernández ) or three-step IVTTD (Boisen and Fernández ) the first step of the IVID procedure, 1 g of ground ingredient sample was transferred into mL conical flasks and 25 mL of sodium phosphate buffer solution ( M, pH ), and 10 mL of HCl ( M, pH ) .

    In vitro digestibility assay development preceded the in vivo evaluation. A three stage batch system as described by Boisen and Fernandez () was utilized. This method was not thoroughly.   (P = ), whereas in vitro digestibility coefficients were lower for (the less water-soluble) histidine (P = ), isoleucine (P digest proteins to mimic in vivo digestibility. All in vitro-soluble peptides could be.


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In vitro and in vivo experiments on the digestibility of raw and heat-treated egg white by Essie White Cohn Download PDF EPUB FB2

The most expensive but representative approach is an in-vivo feeding experiment (Kiers et al., ) monitoring weight gain and feed conversion ratio as criteria for digestibility.

Such experiments are usually conducted to confirm previous laboratory-based in-vitro experiments that can be carried out under controlled conditions and that require. The results suggested that the in vitro digestibility of egg whites heated at 75 °C for 15 min was times higher than for raw egg white.

Analogously, EWP was heat-treated using both spray-drying and dry-heating processes, which should also promote its digestibility due to the intense heat treatment involved in these processes. Cited by:   The terms in vivo and in vitro refer to how certain studies, laboratory experiments, and medical procedures are performed.

One example is in vitro fertilization. In vitro digestion models are commonly used for determining the bioaccessibility of bioactive compounds. These methods are inexpensive, rapid, and pose no ethical concerns pertaining to clinical trials.

In vitro models simulate the GIT condition by adjusting the ionic strength and pH, as well as addition of enzymes, bile salts and even fermentation reactions to simulate colon conditions. In vitro digestibility analysis made easier with the Gas Endeavour.

Animal feed & nutrition - in vitro analysis If you are working in research and development on animal feed, diet formulation, nutrients or supplements for ruminants, you can rely on Bioprocess Control’s Gas Endeavour to provide accurate and precise volumetric gas production.

In vitro (meaning: in the glass) studies are performed with microorganisms, cells, or biological molecules outside their normal biological context. Colloquially called "test-tube experiments", these studies in biology and its subdisciplines are traditionally done in labware such as test tubes, flasks, Petri dishes, and microtiter s conducted using components of an organism that.

In this work, the impacts of different heat treatments (4, 56, 65, and °C on the in vitro digestibility of egg white proteins were investigated by hydrolysis with pepsin or pepsin + pancreatin to simulate human gastrointestinal digestion, and the digested products were identified using Nano‐LC‐ESI‐MS/MS.

Egg white proteins treated at. In Vivo vs In Vitro. Experiments are the methods that are used in scientific studies to aid in comparing two competing explanations of certain phenomena such as those that are found in certain scientific areas like biology wherein observations are made through testing and experiments.

In biology, the term “in situ” means that the examination and observation of a rare occurrence takes place. For this reason, NDF digestibility measured in vitro or in situ is an important measure of forage quality and should be distinguished from NDF digestibility in vivo.

In addition, there is great variability in the estimate of in vivo digestibility, as many methods have been employed throughout the years in. The effect of inclusion of garlic essential oil (EO) at 33, 66 and µg mL-1, raw garlic (GAR) at 5, 10 and 15 mg mL-1 and monensin (MON) at µg mL-1 of incubation medium on organic matter digestibility (OMD) was studied with in vitro gas production, ANKOM daisy II and conventional in vitro (IVOMD) methods.

The material was incubated with sheep ruminal fluid and the experimental design. In vivo (Latin for “within the living”) refers to experimentation using a whole, living organism as opposed to a partial or dead organism. Animal studies and clinical trials are two forms of in vivo vivo testing is often employed over in vitro because it is better suited for observing the overall effects of an experiment on a living subject.

In vitro digestion studies are applied to mimic the in vivo physiological conditions of the digestion process by taking into accounts digestive enzymes, pH, digestion time and salt concentration.

In Vitro Techniques. In vitro techniques are particularly valuable in toxicity testing, where they are commonly used for a number of ethical (reduction in the number of test organisms), scientific (cells provide a key level of biological organization), and economic (can provide rapid, low cost, and reliable screening tools) reasons [1].

Simple in vitro methods have the potential to give useful measures of in vivo amino acid and protein digestibility for humans.

In vitro methods, including the complex multi-component models of. The effect of pH (4, 5, 7, and 9) combined with either heat (60, 80°C for 10 min) or pulsed electric fields (PEF) ( kV/cm, kJ/kg) treatments on the in vitro peptic digestion of.

Other reasons why the replacement of animal experiments is difficult are (1) difficulties to include xenobiotic metabolism into in vitro assays, (2) difficulties to capture interactions between different cell types, (3) problems to extrapolate from in vivo doses to in vitro concentrations, (4) difficulties in simulating the consequences of long.

Annu Rev Food Sci Technol. ; doi: /annurev-food Epub Jan 2. Gastric digestion in vivo and in vitro: how the structural aspects of food influence the digestion.

John Monro, Suman Mishra, in Advances in Potato Chemistry and Technology, Effects of cooling after cooking. When cooked potatoes are subjected to a period of cooling after cooking, the in vitro digestibility of the starch in them decreases (Mishra et al., ), and the glycemic effect that they have is also significantly reduced (Leeman et al., ; Tahvonen et al., ).

digestibility was low, but the digestibility results obtained with the in vitro method ( and % for ether extract and starch, respectively) were very close to those from the in vivo trial (average digestibility of ether extract and starch was and %, respectively). The present in vitro method has proved to be a relatively simple.

The in vitro true ileal digestibility of ovalbumin, cooked and raw chicken egg white, and casein was similar to that found in humans (r2 = ), providing a casual observation to support the.

What is in vivo. In vivo refers to a phenomenon in which experiments are performed using a whole, living organism. The two forms of in vivo experiments are animal studies and clinical trials during drug development. The overall effect of the experiment on a living organism can be observed in in vivo techniques.

Thus, in vivo experiments are more precise than in vitro experiments.In this study, a novel ACE inhibitory tripeptide (IVR) was isolated and identified from unfertilized soft-shelled turtle egg white (SSTEW).

The IC50 value of IVR was measured in vitro as low as 0.For example, protein digestibility values in elderly rats for mustard flour (containing glucosinolates), alkaline/heat treated soya protein isolate and lactalbumin (containing D-amino acids and LAL), raw soyabean meal and black beans (containing trypsin inhibitors) and heated skim milk powder (containing MRP) were 7–17 % lower than in young rats.