The Cornucopia Institute reports that most non-organic veggie burgers currently on the market are made with the chemical hexane -- a neurotoxin.

Makers of many soy-based burgers submerge they soybeans in hexane to separate the oil from the protein and reduce the amount of fat in the product. If a non-organic burger contains soy protein isolate, soy protein concentrate, or texturized vegetable protein, it was likely made using hexane.

Veggie burgers made with hexane include:

• Amy's Kitchen
• Boca Burger, conventional
• Franklin Farms
• Garden Burger
• It’s All Good Lightlife
• Morningstar Farms
• President’s Choice
• Taste Above
• Trader Joe's
• Yves Veggie Cuisine

Alternet notes that:

“ Products labeled ‘organic’ aren't allowed to contain any hexane-derived ingredients, but that rule doesn't apply to foods that are labeled ‘made with organic ingredients.’”