Whey Protein

Whey Protein is the name for a collection of globular proteins that can be isolated from whey, a by-product of cheese manufactured from cow's milk. It is typically a mixture of beta-lactoglobulin (~65%), alpha-lactalbumin (~25%), and serum albumin (~8%), which are soluble in their native forms, independent of pH. Whey has the highest Biological Value (BV) of any known protein.

The protein fraction in Whey (approximately 10% of the total dry solids within Whey) comprises four major protein fractions and six minor protein fractions. The major protein fractions in whey are beta-lactoglobulin, alpha-lactalbumin, bovine serum albumin and immunoglobulins. Each of these components have important disease-fighting effects. In addition, whey protein is easily digestible.

Whey protein can be denatured by heat. High heat (like the sustained high temperatures above 72 degrees Celsius (160 degrees Fahrenheit) associated with the pasteurization process) denatures whey proteins, destroying some bioactive compounds, such as the amino acid cysteine. While native whey protein does not aggregate upon renneting or acidification of milk, denaturing the whey protein triggers hydrophobic interactions with other proteins, and the formation of disulfide bonds between whey proteins and casein micelles, leading to aggregation with other milk proteins at low pH.

Whey protein typically comes in three major forms: concentrate, isolate and hydrolysate. Whey protein concentrates contain a low level of fat and cholesterol but generally have higher levels of bioactive compounds, and carbohydrates in the form of lactose - they are 29%-89% protein by weight. Isolates are processed to remove the fat, and lactose, but are usually lower in bioactive compounds as well - they are 90%+ protein by weight. Both of these types are mild to slightly milky in taste. Hydrolysates are predigested, partially hydrolyzed whey proteins which consequently are more easily absorbed, but their cost is generally higher. Whey protein hydrolysate also tends to taste quite different than other forms of whey protein, usually in a way that many find undesirable but can be masked when used in beverages

Whey protein contains high levels of both essential and non-essential amino acids, and pregnant mothers are sometimes advised by their obstetricians to supplement their diets with whey protein to ensure that their developing babies get all the basic amino acids they might need. [citation needed]

More than other protein supplements, whey protein powder is commonly used by bodybuilders and other athletes to accelerate muscle development and aid in recovery. Some individuals with suppressed or otherwise abnormal immune systems or degenerative diseases use undenatured bioactive whey proteins to increase their antioxidant levels. Undenatured whey proteins are a good source of cysteine, a conditionally essential amino acid which is the rate limiting factor for the body's production of glutathione, an important antioxidant.

Examples of commercial whey proteins include those available in most health food stores and supermarket health sections; they typically consist of isolate/concentrate or isolate/concentrate/hydrolysate mixtures and they are usually flavored so they can be mixed with water or milk and consumed as a drink or shake.

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100% Whey Protein Gold Std, Double Rich Chocolate by Optimum Nutrition


100% Whey Protein Gold Std, Vanilla Ice Cream by Optimum Nutrition


100% Whey Protein Gold Standard - Strawberry by Optimum Nutrition


100% Whey Protein Gold Standard - Rocky Road by Optimum Nutrition


100% Whey Protein Gold Standard - Tropical Punch by Optimum Nutrition

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100% Whey Protein Gold Standard - Strawberry by Optimum Nutrition



100% Whey Protein Gold Standard - Rocky Road by Optimum Nutrition



100% Whey Protein Gold Standard - Tropical Punch by Optimum Nutrition



100% Whey Protein Gold Std, Vanilla Ice Cream by Optimum Nutrition

Soytein Protein Energy Meal, Banana
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase
Soytein Protein Energy Meal, Cappuccino
Soytein Cappuccino Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily r Click for more information and to purchase
Soytein Protein Energy Meal, Caramel
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase
Soytein Protein Energy Meal, Chocolate
Soytein Cappuccino Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily r Click for more information and to purchase
Soytein Protein Energy Meal, Natural
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase
Soytein Protein Energy Meal, Orange Cream
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase
Soytein Protein Energy Meal, Peanut Butter
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase
Soytein Protein Energy Meal, Strawberry
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase
Soytein Protein Energy Meal, Vanilla
Soytein Protein Energy Meal provides 14 grams of Non-GMO soy protein per serving. Two 8 ounce servings of Soytein, as part of a diet low in saturated fat and cholesterol, supply the daily requirement Click for more information and to purchase