Changes in the Concentration and Composition of Volatile Organic Sulfur Compounds (VOSCs) during the Decay of Navel Oranges

Abstract

Abstract:

The components, concentrations and compositions of volatile organic sulfur compounds (VOSCs) emitted from Newhall navel orange (Citrus sinensis L. Osbeck) were investigated during the laboratory-incubated decay under uncontrolled conditions for a period of one month, using preconcentrator coupled with gas chromatography-mass spectrum (GC-MS). In total, three VOSCs including dimethyl sulfide (DMS), carbon disulfur (CS2) and dimethyl disulfide (DMDS) were determined in the gases released from fresh and decaying navel oranges. For total volatile organic sulfur compounds (TVOSCs) or individual VOSCs, their concentrations were very low when naval oranges fresh, and increased with decay time to attain the maximum and then decreased to be very low and steady until the end of the experiment. CS2 dominated in VOSCs released from navel oranges when fresh and in the early 2 day of incubation, while DMS was the most abundant VOSCs after 2 days of incubation.

CLC Number:

255.3

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