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科学美国人:Beer Marinade Cuts Grilling Carcinogens

60秒科学节目(SSS)是科学美国人网站的一套广播栏目,英文名称:Scientific American - 60 Second Science,节目内容以科学报道为主,节目仅一分钟的时间,主要对当今的科学技术新发展作以简明、通俗的介绍,对于科学的发展如何影响人们的生活环境、健康状况及科学技术,提供了大量简明易懂的阐释。

Grillmasters already know that a cold brew is a fine companion at the barbecue. So here's some science to toast to—marinating meat in beer actually cuts the number of potentially cancer-causing compounds that form, as chops sizzle on the grill. So says a report in the Journal of Agricultural and Food Chemistry. [Olga Viegas et al, Effect of Beer Marinades on Formation of Polycyclic Aromatic Hydrocarbons in Charcoal-Grilled Pork]

The study started out like any barbecue—with pork chops, charcoal, and beer. Researchers marinated the chops for four hours in either regular or nonalcoholic pilsner, or a dark ale. Then they fired up the grill. After cooking, they analyzed the chops for polycyclic aromatic hydrocarbons, or PAHs, which are found in smoked and grilled meats, and may up your risk of cancer.

Turns out dark ale cut PAH levels in half, compared to unmarinated meat. The extra antioxidants in dark beer may be the trick, researchers say. Because PAHs form with the help of free radicals, and antioxidants could slow down that process. So if you're health-conscious, but love to grill? A simple beer marinade might let you have your steak…and eat it, too.

—Christopher Intagliata

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