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Related Experiment Videos

Canned foods: appropriate in trace element studies?

L K Henriksen, J R Mahalko, L K Johnson

    Journal of the American Dietetic Association
    |May 1, 1985
    PubMed
    Summary

    Production lot and storage time impact trace element variability in canned foods. For metabolic diets, using frozen foods or glass-canned options is recommended to minimize inconsistencies.

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    Area of Science:

    • Food Science
    • Nutritional Science
    • Analytical Chemistry

    Background:

    • Metabolic diet studies require consistent nutrient content.
    • Variability in canned food composition can affect study outcomes.
    • Trace element content in food is influenced by various factors.

    Purpose of the Study:

    • To assess the impact of production lot and storage time on trace element content in canned foods.
    • To identify factors contributing to variability in canned peaches, green beans, and tomatoes.
    • To provide recommendations for minimizing variability in metabolic diet studies.

    Main Methods:

    • Comparison of trace element content across different production lots of canned peaches, green beans, and tomatoes.
    • Evaluation of canned foods opened at three distinct time points, with 6-month intervals.
    • Analysis of canned foods stored under controlled conditions.

    Main Results:

    • Storage time significantly affected trace element variability in tomatoes and green beans.
    • Production lot was a more critical factor for trace element variability in peaches.
    • Trace element content in canned foods is demonstrably influenced by both production and storage.

    Conclusions:

    • For metabolic studies exceeding a few weeks, prioritize frozen foods or glass-canned alternatives.
    • If using tin-canned products, transfer to freezer or store at low temperatures above freezing.
    • Standardize purchasing by obtaining products from the most recent canning season and maintain consistent kitchen procedures.

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