Selected nutrient analyses of fresh, fresh-stored, and frozen fruits and vegetables

Linshan Li, Ronald B. Pegg, Ronald R. Eitenmiller, Ji Yeon Chun, Adrian L. Kerrihard

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

This two-year study compared the status of targeted nutrients in selected fresh and frozen fruits and vegetables. In addition, a novel third category was examined—a “fresh-stored” categorization intended to mimic typical consumer storage patterns of produce following purchase (five days of refrigeration). Broccoli, cauliflower, corn, green beans, green peas, spinach, blueberries, and strawberries of all three categories of freshness were analyzed for their concentrations of L-ascorbic acid (vitamin C), trans-β-carotene (provitamin A), and total folate. Analyses were performed in triplicate on representative samples using standardized analytical methods and included a quality control plan for each nutrient. In the majority of comparisons between nutrients within the categories of fresh, frozen, and “fresh-stored”, the findings showed no significant differences in assessed vitamin contents. In the cases of significant differences, frozen produce outperformed “fresh-stored” more frequently than “fresh-stored” outperformed frozen. When considering the refrigerated storage to which consumers may expose their fresh produce prior to consumption, the findings of this study do not support the common belief of consumers that fresh food has significantly greater nutritional value than its frozen counterpart.

Original languageEnglish
Pages (from-to)8-17
Number of pages10
JournalJournal of Food Composition and Analysis
Volume59
DOIs
StatePublished - 1 Jun 2017

Keywords

  • Food analysis
  • Food composition
  • Fresh
  • Frozen
  • Fruits
  • Nutrients
  • Produce
  • Refrigeration
  • Storage
  • Vegetables

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