A Laser Technique for Quality Evaluation of Sheep, Goat and Camel Milk

Abstract

Milk is an important source of all basic nutrients, which are needed for proper growth and body. The study was conducted to evaluate physiochemical quality of sheep, goat and camel milk samples in selected dairy plant of Egypt using Laser technique. Various physicochemical properties included fats; Protein, acidity, specific gravity; freezing point and colour were analyzed and compared. The qualification was done by laser technique with optical properties (reflection, absorption) with wavelength 632.8 nm. The conclusive can be summarized in the following points: (a) Total solids and pH in milk have been measured in terms of % of lactic acid, and order in different samples of milk is obtained as : Sheep milk < Goat milk  < Camel milk, (b) Fat, protein, ash, and total carbohydrate content determined in various samples of milk have been reported, and order in different samples of milk is obtained as: Sheep milk > Goat milk > Camel milk, (c) There is direct proportion between Laser reflection percentage and pH value. While, there is inverse proportion between the Laser reflection percentage and the total solids percentages, (d) There is inverse proportion between Laser absorption percentage and pH value. While, there is direct proportion between the Laser absorption percentage and the total solids percentages, (e) There is inverse proportion between Laser reflection percentage and fat, protein, ash and carbohydrate percentage. While, there is direct proportion between Laser absorption percentage and fat, protein, ash and carbohydrate percentages, and (f) Laser techniques applied are available, fast, and easy used to detect milk quality.