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. 2014 Dec 1;9(12):e112726. doi: 10.1371/journal.pone.0112726

Figure 1. Chemical structure of allicin and mechanism of formation from alliin by the enzyme alliinase.

Figure 1

Step 1. Alliinase hydrolyses alliin to produce allylsulfenic acid which, in step 2, condenses spontaneously with the loss of water to produce allicin.