The Volatile Sulfur Components of Cabbage^a

Abstract

Naturally occurring volatile sulfur compounds in cabbage have been identified by mass spectrometry and gas chromatography. Twenty sulfur compounds are reported of which five are isothiocyanates, five sulfides, nine disulfides and one trisulfide. Two additional isothiocyanates and one trisulfide are tentatively reported. The method of mass spectral analysis is described for representative members of these sulfur compounds. Gas chromatography of fresh, dehydrated and rehydrated cabbage clearly shows the presence of ally1 isothiocyanate in fresh cabbage and its regeneration by enzymatic action in dehydrated. cabbage. The identification of five isothiocyanates reveals the presence of corresponding thioglucosides from which the isothiocyanates are released by enzymatic hydrolysis. Similarly corresponding reactions leading to the formation of sulfides are discussed.

Influence of Temperature, Modified Atmosphere Packaging, and Heat Treatment on Aroma Compounds in Broccoli

“…DMS was detected in raw broccoli stored under condition II, but not in broccoli stored under condition I ( Table 3). DMS has previously been found in low concentrations in freshly minced cabbage (22) and as a major component of cooked cabbage (23) low-oxygen storage. The S-methylmethionine sulfonium salt has been suggested to be the precursor of DMS (22,24,25), in most cases in combination with heat.…”

“…DMS has previously been found in low concentrations in freshly minced cabbage (22) and as a major component of cooked cabbage (23) low-oxygen storage. The S-methylmethionine sulfonium salt has been suggested to be the precursor of DMS (22,24,25), in most cases in combination with heat. The presence of DMS in raw broccoli and in freshly minced cabbage (22) indicates a decomposition of the salt without heat.…”

The Sauromatum guttatum appendix as an osmophore: excretory pathways, composition of volatiles and attractiveness to insects

“…2-methyl-3-buten-2-ol and 3-methyl-2-butanone are likely hemiterpenes. Dimethyl disulphide originates from S-methyl-Lcysteine sulphoxide in cabbage and other crucifers (Bailey et aL, 1960).…”

Effects of drought and root injury on plant-generated CS2 emissions in soil

“…Some plants emit CS 2. CS2-emitting plants include Brassica oleracea capitata L. (Bailey et al, 1961;Banwart and Bremner, 1976), Acacia pulchella R. Br. (Whitfield et al, 1981), Medicago sativa L., Zea mays L., Quercus alba L. (Westberg and Lamb, 1984), Stryphnodendron excelsum Harms (Haines et al, 1989), Acacia mangium Willd., and nine other members of the family Mimosaceae (Haines et al, 1987).…”