Sulfhydryl and Ascorbic Acid Relationships in Selected Vegetables and Fruits

Sulfhydryl and Ascorbic Acid Relationships in Selected Vegetables and Fruits ABSTRACT Selected vegetables and fruits were analyzed for ascorbic acid, total sulfur, and sulfhydryl‐containing (‐SH) fractions, shortly after harvest and after 3 wk storage at 2°C and 95–100% relative humidity. More than 95% of the original ascorbic acid content was retained in broccoli and brussels sprouts. Ascorbic acid stability in fruits appeared to be due to low pH but that did not explain high retention in broccoli and brussels sprouts. Initial ascorbic acid correlated with total sulfur (r = 0.909). Weaker correlations were found between total −SH and protein −SH fractions and ascorbic acid content (r = 0.626 and 0.672). The quantity of sulfhydryl containing compounds did not explain ascorbic acid retention mechanisms of the vegetables. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Food Science Wiley

Sulfhydryl and Ascorbic Acid Relationships in Selected Vegetables and Fruits

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Abstract

ABSTRACT Selected vegetables and fruits were analyzed for ascorbic acid, total sulfur, and sulfhydryl‐containing (‐SH) fractions, shortly after harvest and after 3 wk storage at 2°C and 95–100% relative humidity. More than 95% of the original ascorbic acid content was retained in broccoli and brussels sprouts. Ascorbic acid stability in fruits appeared to be due to low pH but that did not explain high retention in broccoli and brussels sprouts. Initial ascorbic acid correlated with total sulfur (r = 0.909). Weaker correlations were found between total −SH and protein −SH fractions and ascorbic acid content (r = 0.626 and 0.672). The quantity of sulfhydryl containing compounds did not explain ascorbic acid retention mechanisms of the vegetables.

Journal

Journal of Food ScienceWiley

Published: Mar 1, 1991

References

  • Vitamin C content of vegetables. XII. Broccoli, cauliflower, endive, cantaloupe, parsnips, New Zealand spinach, kohlrabi, lettuce and kale
    Wheeler, Wheeler; Tressler, Tressler; King, King

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