1 The colour of the yolk does not affect the egg nutritional value. 2  Chalazea (chuh-LAY-zee): A pair of spiral bands that anchor the yolk in the centre of the thick albumen. 3  The fresher the egg, the more prominent the chalazae. 4  Germinal Disk: Appears as a slight depression on the surface of the yolk.
Bleaching agents. General info. The purpose of bleaching agents is to bleach the natural substances in cotton fibres and cellulose fibres that make the fabric yellowish and to bleach spots that are not removed by the laundering process.Bleaching agents also bleach textile colours and hence should be avoided for coloured textiles.eneral info. The purpose of bleaching agents is to bleach the natural substances in cotton fibres and cellulose fibres that make the fabric yellowish and to bleach spots that are not removed by the laundering process.
Bleach works by the process of oxidation, or the alteration of a compound by the introduction of oxygen molecules. A stain is essentially a chemical compound, and the addition of bleach breaks down the molecules into smaller elements so that it separates from the fabric.