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Effects of Stabilizers and pH Adjustments on Milk Proteins in UHT-Treated Citrus Juice/Skim Milk Blend DrinkNewman, Sandra M. 01 May 1992 (has links)
A UHT -processed skim milk (85%)/orange juice (15%) drink was developed. Product integrity and stability were maintained by two methods. Proper homogenization of the blend before UHT processing stabilized a drink formulation containing .25% carboxymethyl cellulose and .025% carrageenan. Adjusting the pH of the blend (pH 6.3 and 6.5) resulted in a different stabilization. After 28 days at room temperature, settling of milk solids was 5.2% of volume height in the prehomogenized sample and 86.9% of volume height in the same blend that had not been homogenized prior to UHT processing. After storage, the two treatments were analyzed to verify that there was no perceived textural difference between the pH adjusted and unadjusted blends. A consumer product acceptability evaluation resulted in a split population, and more panelists liked the product than disliked it.
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