Study Material for Feb 7 Quiz
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In terms of rigor mortis when is the muscle the most stiff and tough?
Rigor completion
What are the three aerobic processes in muscle?
Glycogen + O2 => H2O + CO2 + Energy Lactic Acid + O2 => H2O + CO2 + Energy Fatty Acid + O2 => H2O + CO2 + Energy
What are the functions of the yolk?
To provide nutrients and house the embryo
What candling results are wanted in high quality eggs?
Small air cell, faint yolk, firm albumen, no blood spots
What is the sarcolemma?
The excitable outer cell membrane around muscle cells
What percent water are eggs?
74%
Which minerals in eggs are mostly found in the shell?
Ca and Mg
What accessary structures do primary follicles have?
Basal layer, dermis, wool fiber, inner root sheath, arrestor muscle, sebaceous gland, sweat gland, papilla with blood vessel
What type of fibers are preferred by consumers?
Secondary fibers with smaller diameters (more fine)
In terms of rigor mortis, when is the muscle most relaxed?
Rigor onset
What pH is necessary for autolysis?
5.6
What is the clip?
The amount of wool obtained from sheep after shearing
What percent of egg fats are saturated fats?
34%
What are the types of poultry meat?
Chicken, goose, duck, turkey
What accessary structures are missing from secondary follicles?
Arrestor muscle and sweat gland
What country is the leading producer of mohair?
United States (specifically Texas)
What are the shell membranes?
Inner and outer protein fiber mats that help provide structure for the egg
What are negative qualities of wool?
Can shrink and/or cause itching
What factors influence egg quality?
Genetics, physiology (extra tissue present), and nutrition
What egg grade is found in egg cartons?
AA
What is scouring?
Use of a soapy solution to remove natural and applied wool impurities
What two enzymes break down muscle tissue after death?
Cathepsins and calpains
What interior attributes are used to grade eggs?
Yolk condition, albumen condition and thickness, air cell size, and abnormalities
What is resolution of rigor?
The breakdown of muscle tissue by proteins leads to the muscle becoming more tender after rigor mortis