Some observations on the relationship between sulphur staining and corrosion in food cans.

Mahadeviah, M. and Eipeson, W. E. and Gowramma, R. V. and Sastry, L. V. L. and Bhatnagar, H. C. (1971) Some observations on the relationship between sulphur staining and corrosion in food cans. Journal of Food Science and Technology, 8 (4). 186-191, 16 ref..

PDF Journal of Food Science and Technology (Mysore), Volume-8(4 (1971) 186-191.pdf - Published Version Restricted to Registered users only Download (202kB)

Abstract

Studies with model systems consisting of Na2S and H2S packed in cans and with canned vegetables and jam showed that S staining does not necessarily cause increased corrosion. SO2 in mango jam failed to cause any significant increase in detinning but did increase S staining. Mixed vegetables behaved in a similar way showing that increased S staining does not cause increased corrosion in tinplated cans. Increasing the acidity (pH reduced to 5.0) of vegetables rich in S containing compounds led to a slight increase in staining and detinning. Potatoes packed in tinplated cans with varying amounts of different ingredients (CaCl2, brine, citric acid) indicated that the ingredients do not significantly affect the amount of detinning. Electrolytically coated cans with small grain structure generally showed more detinning than those with large grain structure and hot dipped cans. Protecta treatment of cans (dip in a solution of teepol, NaOH, sodium orthophosphate, and potassium chromate) was shown to be a satisfactory method for preventing S staining in cans.

Item Type:	Article
Uncontrolled Keywords:	SULPHUR-; S staining & corrosion of cans; STAINING-; CORROSION-; CANS-; MANGOES-; Staining of cans by /mango jam/; JAM-; VEGETABLES-; Staining of cans by / mixed vegetables/; POTATOES-; Staining of cans by /potatoes/; SULPHIDES-; Staining of cans by /Na2S/; HYDROGEN-SULPHIDE; Staining of cans by /H2S/; SULPHUR-DIOXIDE; Staining of cans by /SO2/
Subjects:	600 Technology > 05 Chemical engineering > 07 Metal Corrosion
Divisions:	Food Packaging Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	24 Sep 2014 10:22
Last Modified:	24 Sep 2014 10:22
URI:	http://ir.cftri.res.in/id/eprint/7259

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