A growing number (จำนวน) of consumers are willing to pay a premium (รางวัล) for fruits (ผลลัพธ์), vegetables and other foods labelled "organic," but whether they're getting what the label claims is another matter. Now scientists studying conventional and organic tomatoes are devising a new way to make sure farms are labeling their produce appropriately. Their report, which appears in ACS' Journal of Agricultural (การเกษตร) and Food Chemistry (เคมี), could help prevent organic food fraud (คนหลอกลวง).