Abstract
There are more than 600 known species in the genus Allium. While some are little more than botanical curiosities, others are attractive ornamental plants of diverse size and hue (e.g., A. moly L., A. giganteum Regel, A. flavum L., A pulchellum, A. roseum) or economically important spices and vegetables (e.g., onion, garlic, leek, shallot, chive, and scallion, respectively A. cepa, A. sativum, A. porrum L.,A. ascalonicum auct., A schoenoprasum L., and A. fistulosum L.).1 The antibiotic, anticancer, antithrombotic, cholesterol-lowering, and other beneficial health effects associated with consumption of genus Allium plants are widely touted in the popular and scientific/medical press.23 Typical culinary usage of these plants involves cutting or crushing them so as to maximize flavor and aroma release. Cutting or crushing results in disruption of plant tissue with ensuing enzymatic and chemical reactions generating the actual flavorants and aroma compounds.4 The flavorants and aroma compounds probably serve as protective agents for the plant against attack by predators and infectious microorganisms.4 At the same time several insect pests, such as the leek moth or onion maggot, key in on these compounds to locate their next meal or egg-laying site.5
Dedicated with warm regards to Professor Dieter Seebach on the occasion of his 60th birthday.
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Block, E., Calvey, E.M., Gillies, C.W., Gillies, J.Z., Uden, P. (1997). Peeling the Onion. In: Johns, T., Romeo, J.T. (eds) Functionality of Food Phytochemicals. Recent Advances in Phytochemistry, vol 31. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5919-1_1
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