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The effect of addition of whey on the acceptability of Tebeldi juice.

Article Excerpt
Abstract

Tebeidi juice was prepared by using different concentrations of whey (25, 50, 75 and 100%) and the panelists evaluated the acceptability of the product. The whey used to prepare the juice contains 0.4, 1.10, 0.10, 12.04, and 6.25 lactose, proteins, fats, ash, and TSS respectively, and the whey's acidity as a lactic acid was 0.09%. Results indicates that the acceptability of the Tebeldi juice was not affected by the addition of the different concentrations of whey; except the juice prepared by 100% whey concentration, which had unacceptable flavor and odor, and this was solved by the addition of vanilla flavor and flower water to the product.

Introduction

Whey is a by- product of cheese making process. It is formed when the curds separate from the milk or cream. After the cheese curds are formed, the remaining liquid is called whey; this liquid is watery and thin. It is composed of a group of organic matters that can be analyzed due to microorganisms exposure especially aerobic bacteria. Some of cheese factories refuse the whey in the water resource, which can be prone for microbial fermented processes. So that represents source of pollution to the nature and the human surroundings (Sagran, 2003). For these, hazards may result from whey disposal, some countries put regulations to prevent disposal in water and earth environment (Thernouth, 1969).

Whey is a high quality complete protein, with all the essential amino acids. Whey is also the richest known source of naturally occurring branched chain amino acids (leucine, isoleucine and valine). These are important for active individuals who exercise and professional athletes (Whey Protein Institute, 2001). Whey can be quickly interring the body. It is an excellent source of protein, vitamins, minerals and lactose. Also it is the base of many protein drinks for an athletes or other wishing to build or repair muscle tissues and also it is important supplement for those who have limited mobility in the limbs. It can be an important addition to any one diet. Those who have difficulty finding the time to eat right or have other dietary concerns such as protein needs in a vegetarian diet. It is also common used in infant formula, protein supplements and medical formula (Yares, 2005).

As human age advance some changes takes place in the biological processes, which may lead...

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