河源独头火蒜与独头蒜挥发成分测定

目的]了解河源火蒜与普通蒜的香气成分差异。方法]采用静态顶空进样-气相色谱-质谱联用法(SHS-GC-MS)对河源独头火蒜和独头蒜的挥发性物质及含量进行分析。结果]该试验条件下,共检出独头蒜挥发性风味成分主要有23种,12种为含硫化合物,其中主要成分是二烯丙基三硫醚(25.11%)、二烯丙基二硫醚(19.78%)、3,4-二甲基-1,2-二硫环戊烯酮(18.65%)、二氧化硫(5.20%)、3-乙烯基-1,2-二硫环戊烯(2.61%)、烯丙基甲基硫醚(2.31%)、2-乙烯基-1,3-二噻烷(2.07%)、2-恶唑烷硫酮(2.00%)、甲硫基乙腈(1.78%)、硫氰酸乙酯(1.28%),共占总含量81.73%;共检出独头火蒜主要挥发性风味成分也为23种,14种为含硫化合物,其中主要成分是二烯丙基三硫醚(38.03%)、二烯丙基二硫醚(22.63%)、3-乙烯基-1,2-二硫环戊烯(7.95%)、3,4-二甲基-1,2-二硫环戊烯酮(7.55%)、二氧化硫(4.08%)、甲硫基乙腈(4.04%)、二烯丙基硫醚(2.99%)、异硫氰甲酸甲酯(2.08%)、硫氰酸乙酯(1.49%)、烯丙基甲基硫醚(1.41%)、硫化丙烯(1.25%)、2-乙烯基-1,3-二噻烷(1.15%),共占总含量95.59%。结论]河源独头火蒜的挥发性物质的数量和含量比普通独头蒜都高。

Determination of Volatile Components of Heyuan Single Toasted Garlic and Single Clove Garlic

Objective]To understand the difference of aroma components of Heyuan toasted garlic and clove garlic.Methods] Static head-space -gas chromatography -mass spectrometry (SHS-GC-MS) analysis method was applied.Results] Under the experimental conditions, 23 kinds of volatile components were detected in single clove garlic , 12 kinds were sulfur-containing compounds in which the main ingredients were Diallyl trisulfide (25.11%), diallyl disulfide (19.78%), 3,4-dimethyldithiol-2-one (18.65%), sulfur dioxide (5.20%), 3-ethenyl-1,2-dihydrodithiine (2.61%), allyl methyl sulfide (2.31%), 2-vinyl-1,3-dithiane (2.07%), 2-oxazolidine-thione (2.00%), methylthio acetonitrile (1.78%), and ethyl thiocyanate (1.28%) accounting for 81.73% of the total content.In addition, 23 species were detected in single toasted garlic, 14 kinds were sulfur-containing compounds in which main ingredients were diallyl sulfide (38.03%), diallyl disulfide (22.63%), cyclopenten-3-vinyl-1,2-dithiol (7.95%), 3,4-dimethyl-1,2-disulfide cyclopentenone (7.55%), sulfur dioxide (4.08%), methylthio acetonitrile (4.04%), diallyl sulfide (2.99%), methyl isothiocyanate (2.08%), ethyl thiocyanate (1.49%), allyl methyl sul-fide (1.41%), propylene sulfide (1.25%), and 2-vinyl-1,3-dithiane (1.15%), accounting for 95.59%of the total content.Conclusion] The number and content of flavor substances in Heyuan clove garlic are higher than ordinary single garlic .