Stability of Spray-Dried Encapsulated Carrot Carotenes

Authors

  • LORI A. WAGNER,

    1. Authors are affiliated with the Dept. of Food Science & Nutrition, Univ. of Minnesota, 1334 Eckles Ave., St. Paul, MN 55108.
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  • JOSEPH J. WARTHESEN

    Corresponding author
    1. Authors are affiliated with the Dept. of Food Science & Nutrition, Univ. of Minnesota, 1334 Eckles Ave., St. Paul, MN 55108.
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  • Paper No. 21,585 of the contribution series of the Minnesota Agricultural Experiment Station based on research conducted under Project 18–087.

Address inquiries to Dr. J.J. Warthesen.

ABSTRACT

Encapsulation with various dextrose equivalent (DE) hydrolyzed starches affected stability of α- and β-carotene in spray-dried carrot powders. Degradation of α- and β-carotene during storage of the powders at temperatures ranging from 37 to 65°C followed first-order kinetics and both degraded at the same rate. Hydrolyzed starch of 36.5DE was superior to 4, 15, and 25DE in improving retention of the carotenes. Carotenes encapsulated with 36.5DE hydrolyzed starch had a predicted half-life of 450 days at 21°C compared to 2 days for carrot juice spray dried alone. Increasing the proportion of carrier decreased the carotene degradation rate and similarly decreased surface carotene. Air was critical in carotene stability, but exposure of encapsulated carrot powders to light did not accelerate degradation.

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