With Plus Together With
If you are going to buy and sell these bottles even semi-seriously the price of annual dues for the Association is well worth the money. Lactose It is the principal and typical carbohydrate of milk known as milk sugar. Glucose galactose and other sugars such as oligosaccharides are also present in traces. Lactose exists in true solution in milk. It is a disaccharide composed of two molecules of monosacharides; glucose and galactose. Lactose is readily fermented by the lactic acid fermenting bacteria producing lactic acid and has significance in milk and milk products. It exists in two isomeric forms designated as α and β forms of which the β form is more soluble than the alpha form in water. Lactose content of cow milk is 4.9 percent. The lactose content of milk is inversely proportional to the ash content of the milk.
Short and medium chain fatty acids with 4-12 carbon atoms which occur at comparatively higher concentration in milk fat reported to have antibacterial and fungistatic activity. Milk fat plays another important role in preventing tooth decay by forming a protective coat over the surface of enamel. It is composed of triglycerides of fatty acids. A fatty acid molecule is composed of hydrocarbon chain and carboxyl group. Triglycerides are of two types simple and complex. In simple all the three fatty acids are of same nature whereas complex triglycerides on hydrolysis give glycerol and different fatty acids. The milk fat exists in the form of small globules of sizes ranging from 2 to 10 microns with different glycerides of low melting points in suspension.
You can find some good information regarding how to identify reproductions along with some pictures of known reproductions from various online sources. If you are interested in learning more about these bottles there are two books currently available that provide some excellent information about how they were made and used along with some basic pricing information. The book are titled "Udderly Beautiful" and "Udderly Splendid" by John Tutton. Both give some rarity and pricing information but because of the large number of bottles produced they don t cover even a small fraction of the bottles produced. Both can be found for sale on either eBay Amazon or in some antique shops. Other sources of information are The National Association Of Milk Bottle Collectors and the individual web sites many of their members maintain.