Nutritional Composition of Sweet- and Acid-type Dry Wheys. II. Vitamin, Mineral, and Calorie Contents

Abstract

Twelve to fifteen commercial samples of sweet- and acid-type dry whey were analyzed each quarter for 12 vitamins and 14 minerals during a year. Mean vitamin contents for sweet- and acid-type per 100 g were vitamin A 136 and 107 IU, C 1.41 and .33 mg, B6 .59 and .62 mg, B12 2.4 and 2.5 μg, tocopherol .063 and .071 mg, thiamin .51 and .49 mg, riboflavin 2.14 and 1.85 mg, pantothenic acid 11.5 and 11.4 mg, biotin 43.0 and 35.0 μg, niacin 1.30 and 1.16 mg, folacin .0116 and .0332 mg, and choline 104 and 101 mg. Storage for 22 mo resulted in an average decrease of 70.9% for vitamin A, 34.8% for B6, and 34.3% for biotin. The mineral values for the sweet- and acid-type dry wheys have means per 100 g of: calcium 878 and 2,404 mg, phosphorus 1,096 and 1,588 mg, sodium 1,287 and 1,087 mg, potassium 1,855 and 1,915 mg, magnesium 178 and 224 mg, zinc 2.1 and 8.1 mg, iron .9 and 1.3 mg. Copper was 2.8 and 5.3 ppm, iodine 6.79 and 8.64 ppm, lead 1.15 and 1.68 ppm, mercury .02 and .03 ppm, selenium .064 and .034 ppm, cadmium .11 and .14 ppm, and arsenic .77 and .59 ppm; calories (Kcal/g) were 3.71 and 3.86. © 1977, American Dairy Science Association. All rights reserved.