Are canned stringed beans less nutritious than fresh beans? Now you can know the conclusive answer to this question, by comparing the ORAC values for each.
If you look at the results for raw green string beans you will see they test out at 799. Meanwhile those in a can - which includes the solid and liquid brine that come in it - test out at 290. This means the fresh version is 275% of what the canned version provides.
Are canned beans good for you? Yes, they still are. But these measurements for antioxidants show that they are significantly less healthy for you, at least when it comes to this category of nutrition.
USDA Database for the Oxygen Radical Absorbance Capacity (ORAC) of Selected Foods, Release 2 - Prepared by Nutrient Data Laboratory, Beltsville Human Nutrition Research Center (BHNRC), Agricultural Research Service (ARS), U.S. Department of Agriculture (USDA) - May 2010