No abstract

No abstract

Hydrolysis/autolysis of the glucosinolates found in wild and cultivated cruciferous plants can yield a variety of nitrogenous compounds for the alkyl or aryl moiety. These products include nitriles, isothiocyanates and oxazolidinethiones, all of which may present potential hazards in foods and feeds. More than 70 glucosinolates are known, and almost all the hydrolysis products are amenable to analysis by gas chromatography. The reaction can proceed in different ways, depending upon the conditions of hydrolysis or treatment of the plant during harvest or storage, and confirmation of the identifications made by retention data is sometimes needed. Gas chromatography-mass spectrometry can usually provide this additional structural information. Spectra of alkyl or aryl nitriles and isothiocyanates that contain other functional groups (hydroxyl, episulphide, methylthio, sulphinyl, sulphonyl) and oxazolidinethiones are presented and discussed.

No abstract

varieties are in good agreement with those for the Swedish varieties, except in the case of lysine, where our values are slightly lower than those reported by Eklund and Agren (1975).Generally plant proteins are deficient in methionine, having less than 2 g/100 g of protein (Van Etten et al., 1967). However, poppy seeds have a higher content which is comparable with the FAO Reference Pattern for this essential amino acid. Thus poppy seed should be good adjunct to vegetable proteins to enhance their nutritive value. ACKNOWLEDGMENTWe thank Mr. Sitar am, Centre for Cellular and Molecular Biology, Hyderabad, for help in amino acid analysis. LITERATURE CITEDAOAC "Official Methods of Analysis", 11th ed.