QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Hanning, F. Search for Related Content PubMed Articles by Hanning, F.

Comparison of the Biological and Chemical Methods for the Determination of Vitamin C in Canned Strained Vegetables and a Study of Its Variation from Year to Year¹

Division of Home Economics, Michigan State College of Agriculture and Applied Science, East Lansing

The determination of vitamin C in canned strained vegetables by titration with sodium 2:6 dichlorobenzenone indophenol has been found accurate and reasonably concordant with biological tests on the same samples.

Marked variations in vitamin C content have been found in tomatoes, spinach, peas and green beans from year to year. A discussion of the factors affecting the quality of the vegetables leads to the conclusion that the standardization of the vitamin C potency even under carefully controlled conditions is a difficult problem.

Manuscript received 29 May 1936.