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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 53 for “"Egg yolk"”.
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Effect of anti-egg-yolk-diluent sera upon bovine spermatozoa in egg yolk diluent
… was designed to determine if the antigenicity of egg yolk diluter could be eliminated by the addition of specific antibodies. Two virgin heifers were immunized with 20% yolk - 2.1% citrate - 7% glycerol with penicillin and streptomycin. Non-immune serum and immune sera having titers of 1:640 and …
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Enzymatic degradation of egg yolk cholesterol
… method for the determination cholesterol in egg yolk and processed foods was developed from a method of Kovacs (1990). A sample is heated in a sealed tube with a solution of potassium hydroxide in ethanol containing the internal standard, dihydrocholesterol. The sterols are then isolated by …
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The Recovery of Protein from Egg Yolk Protein Extraction Granule Byproduct
… to proving an excellent source of nutrients, eggs are used in the food, cosmetic, and biotechnology industries for their rheological and bioactive properties. Much of the potential for the added value is in individual components of the egg, rather than the whole egg. At low speed …
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A new process for the separation and purification of egg yolk antibodies
… (IgY) from industrially separated chicken egg yolk. This included aqueous extraction of the water soluble fraction (WSF) from the yolk by dilution with distilled water and pH adjustment, separation of IgY from the WSF using a cation exchange column in an automated chromatography system, and …
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Evaluation of Different Concentrations of Egg Yolk in Canine Frozen Semen Extender
This study tested different concentrations of egg yolk in canine freezing extender void of glycerol, a commonly used cryoprotectant, by examining the motility and morphology throughout the freezing process: initial (baseline after extender added), post-cool (after three hours at 5"C) and post-thaw …
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Fresh and frozen egg yolk protein fractions : emulsion stabilizing power, viscosity, and electrophoretic patterns
Thesis (M.S.)--Michigan State University. Dept. of Foods and Nutrition, 1968
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Hemagglutination-inhibition antibodies in egg-yolk from hens vaccinated with "leucosis-contaminated" and "leucosis-free" Newcastle disease vaccine
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Bacteriology, 1950
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Effect of different disaccharides as energy supplements in tris-egg yolk semen extender on the quality of cryopreserved boer goat spermatozoa
… concentrations as supplements in tris- egg yolk extender. Two experiments were carried out to investigate the effect of (a) addition of three disaccharides (maltose, sucrose and trehalose) and (b) disaccharides combination (maltose and trehalose) at different concentrations using …
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Maternal Plasma and Corresponding Egg Yolk Hormone Variation within a Clutch and Across the Nesting Season of the Loggerhead Sea Turtle (Caretta Caretta)
… the maternal transfer of steroid hormones to egg yolk can vary among species, within and among clutches, seasonally, due to age, and in response to social and environmental cues. In previous studies, significant effects on hatchling phenotype, sex and survival have been attributed to a …
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Cryopreservation of Domestic Cat Epididymal Spermatozoa
… a semen extender that contained little to no egg yolk and could still effectively freeze domestic cat epididymal spermatozoa, for the purpose to sort spermatozoa into X and Y, using flow cytometry. In the first experiment we compared a TesT (Tes + Tris) 20% egg yolk extender (control) to a …
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Effect of Avocado (Persea americana Mill) oil inclusion in the Tris-based extender on the quality of Boer goat semen stored at different temperatures
… were observed when goat semen was extended with egg yolk and skimmed milk because of the seminal plasma secreted by the bulbourethral gland (Cabrera et al., 2005). This study aimed to evaluate the effect of Avocado oil on Boer goats semen quality parameters during liquid storage (5˚C,17 ˚C and …
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Determination of the effects of caffeine C1, 3. 7- trimethylxanthine in Tris-based egg yolk extender and different incubation intervals on the quality of cryopreserved bull semen
Cryopreservation is a technique used to maintain the structure and function of cells by halting their metabolism and enzymatic activity at cryogenic temperatures. Cryopreservation induces structural and functional damage to bovine spermatozoa, resulting in reduced post-thaw fertility potential. …
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Maternal thyroid hormones in Japanese quail eggs
Thyroid hormone content in eggs varies with the thyroid status of the hen and may influence embryonic development prior to the release of appreciable amounts of thyroid hormones by the embryonic thyroid gland. Methods for the measurement of thyroid hormones in egg yolk were verified by …
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Pengaruh pemberian tepung kaki ayam broiler sebagai subtitusi tepung ikan di dalam ransum terhadap produksi dan warna kuning telur ayam arab (Gallus turcicus)
… (Gallus turcicus) is including the type of egg producing chickens wich are quite high. Arabian chicken egg production is reached 225 grains/year/hen while the free-range chicken 130 grains/year/hen. Arabian chicken (Gallus turcicus) require an appropriate feed to increase the egg production …
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The effect of tris aloe vera (barbadensis miller) gel on chilled and frozen-thawed bull spermatozoa quality
… provide energy substrates for sperm metabolism. Egg yolk is one of the most common additives of animal origin that are used for semen preservation, however, it has become a suspect for facilitating the transmission of diseases. Tris-aloe vera gel have several beneficial properties, such as …
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Optimal Analysis of Sulfonamides From Biological Matrices Using Supercritical Fluids
… from spiked non-fat dry milk, beef liver, and egg yolk were found to be more selective using CHF3 than CO2. The polar trifluoromethane improved the extraction efficiency of the polar sulfonamides from the biological matrices and also reduced the amount of co-extractives. The next phase of this …
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The Effect of Estrogen on Regulatory Enzyme Levels and Albumin Gene Expression in Xenopus Laevis Hepatocytes
… to male Xenopus laevis a specific set of egg yolk proteins together with all components required for the membrane dependent synthesis of a secretory protein are coordinately induced with vitellogenin synthesis.
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Using Lipase to Improve the Functional Properties of Yolk-Contaminated Egg Whites
Egg yolk contamination of egg whites continues to be a serious problem in the egg industry. The ability of egg whites to form stable and voluminous foams is greatly inhibited by accidental yolk contamination, even at extremely small levels. Experiments were conducted to determine if lipase can …
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The performance of structured cobalt catalysts in Fischer-Tropsch synthesis
… explore a possible catalyst synthesis route for egg-shell, egg-yolk and egg-white type of cobalt catalyst pellets. The establishment of the nonuniform cobalt catalyst synthesis method will provide an observational evaluation technique for the investigation of the effect of intra-pellet metal …
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