| By Haider Z. Khattak, M.S. Food Science
Dairy ingredients are used as components of various food products all over the world. These ingredients contribute to the flavor; color; appearance; body, and texture of sauces, dressings, and puddings. In some products, such as cheese sauce or dips, dairy ingredients are the primary ingredients in the base of a consumer product. In others, such as salad dressings, they may be used in smaller amounts for flavor or appearance. These ingredients could be found in bread you eat in the breakfast or a quick snack in your lunch time. Most vending machines carry non-Halal products.
In snacks, dairy-based ingredients are primarily used for seasoning, because they enhance the flavor and appearance of the snacks (i.e., cheese powder and dairy-based preparations of many formulations).
Dairy ingredients can be used as functional ingredients in the manufacture of processed meat, poultry, and seafoods. For this purpose, lactose and milk proteins are generally used. Lactose increases the ionic strength of the brine mixture and masks the bitter aftertaste associated with salt and phosphate. Lactose-containing products such as whey and nonfat dry milk are functionally not as good because of their calcium content, which interferes with the binding properties of meat proteins. Milk protein contributes to the stability of the processed meat emulsion. Sodium caseinate competes favorably with meat proteins for absorption at the oil-water interface to stabilize fat in the emulsion. Other functional properties of sodium caseinate that are important in meat systems are that they do not gel with heat; the denatured form improves functionality; and they can contribute to the development of viscosity (Chandan 1997).
Their contributions consist of unique flavor, desirable texture, excellent nutritive value, and a widely accepted "natural" image. Thus, dairy ingredients provide a consumer-friendly label on packaged foods. Dairy ingredients contribute a number of characteristics critical to a food product. These include the emulsifying and stabilizing ability of caseinates, the gelling properties of whey protein concentrates (WPC) and whey protein isolates (WPI), the water-absorption capacity of high-heat nonfat dry milk, and the browning of "lactose" during heat processing. Furthermore, the crystallization characteristics of lactose and the hydrolytic activity of the enzyme lactase are important in confectionery and frozen products. In addition, butter flavor carryover can be achieved with enzyme-modified butterfat and various cheese flavors imparted by enzyme-modified cheeses. An understanding of the functional properties of dairy ingredients allows food scientists to utilize their potential contribution to product characteristics to meet consumer expectations.
Dairy-based Ingredients:
There are numerous dairy ingredients used in various food products, however, few common ingredients have been selected and discussed. Most of these ingredients fall into the category of Mashbooh (doubtful).
Caseinates: Compounds derived by the interaction of alkali with casein (the major milk protein). Caseinates are used as additives in many complex ingredients and products. Generally, this type of ingredient is Halal, if not mixed with any non-Halal ingredients.
Whey: The watery liquid remaining after the curd is formed in the manufacture of cheese and fermented or acidified dairy products. Whey can be used in either compound ingredients or finished products. It is Halal only if not modified with enzymes. The addition of enzymes into whey makes it doubtful (mashbooh) from an Islamic dietary stand point. The sources of enzymes could be animal, microbial or plant. The latter two sources are accepted by most Halal certifying organizations. Rennet is an extract of the fourth stomach of a calf, kid, or lamb, used in the coagulation of milk during cheesemaking (Chandan 1997).
Whey Protein Concentrates (WPC): WPCs are products derived from whey by removal of minerals and lactose. On a dry basis, the protein concentrate contains a minimum of 25% protein. Whey protein isolate (WPI) contains at least 92% protein.
A WPC of 34% protein is commonly used as a stabilizer in yogurt, bakery mixes, dietetic foods, infant foods, and confections. Its water-binding ability, fatlike mouthfeel, and gelation property are particularly useful in these products.
A WPC of 50 or 80% protein is especially suited for use in nutritional drinks, soups, bakery products, meat, dietary foods, and economical egg-white replacement in food formulation. Again, WPC might contain enzymes, hence fall into Mashbooh classification.
Lactose: Lactose is commonly known as milk sugar. It is composed of glucose and galactose. Applications include infant formula, health foods, dietetic formulations, dry mixes, confections, drinks, candy, fermentation substrate, and dairy beverages. Lactose as a sugar is characterized by low solubility and low sweetness. It imparts a desirable brown color to bakery items and enhances flavor in beverages. It is a useful carrier of intense sweeteners and pharmaceutical preparations. So far, lactose seems Halal but is not exactly true. The reason for this statement is because lactose might contain enzymes which makes it Mashbooh.
Casein and Caseinates: These ingredients furnish emulsification, whipping, and texture-modifying attributes. Sodium caseinate aids in the formation of a stable emulsion by locating itself at the interface of oil and water. Casein is the major protein in milk. It is used in the manufacture of most cheeses. It may be Halal or haram, depending upon the enzyme used to produce it (www.ifanca.org/glossary)
Conclusion:
It is time for the dairy ingredient industry to become familiar with the term "Halal". More than 95% of certified-Halal dairy ingredients are intended for markets with large Muslim populations such as those in Southeast Asia and the Middle East. Some major companies like Danisco, Chr. Hansen, Foremost Farms, Grande Cheese Company, Proliant, Saputo Cheese Canada, and WestFarms Foods are under the supervision of IFANCA. These companies are experts in manufacturing dairy ingredients and also well-known suppliers on a global level.
These companies keep IFANCA up-to-date about any new product development and cooperate with IFANCA's policy of Halal Certification. IFANCA regularly conducts Halal audits of their facilities to ensure that all procedures are being followed religiously.
A common misconception among Muslim consumers is that the whey or other ingredient if used in a Kosher-certified product may be considered Halal. This is not true. Not much research has been done in regards to the Halal status of dairy ingredients used in the modern food industry. There might be few dairy ingredients mixed with hidden non-Halal ingredients and product labels don't necessarily spell it all out. Therefore, it is the consumer's responsibility to ask the manufacturers directly for further details. For instance, most of the common daily-use products contain whey which is a doubtful ingredient. It doesn’t take much time to ask the manufacturer what source of enzyme is being used in this whey as all manufacturers maintain information on ingredients used in a product.
References:
Chandan, R. 1997. Dairy-Based Ingredients. Eagan Press Handbook Series, St. Paul, Minnesota, USA
IFANCA website; URL: http://www.ifanca.org/glossary/
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