Duringfall2012and2013,theseexperimentswereperformed by270−290studentsinafirst-semesterorganicchemistry nonmajorslaboratorycourse.Thefirstexperimentwas completedduringone3-hlaboratoryclassaroundmidterm. Studentswroteaformalreportdescribingthepurposeofthe experimentandrelatingtheirdatatothepublishedliterature. Manystudentshaddifficultyinterpretingthepaperchromatographyfortheanthocyaninsbecausemultipleanthocyaninsin eachberrycausedthespotstosmearandruntogether. Studentswerechallengedbyquantitativeinterpretationofthe UV−visspectrabecauseofvariousdilutionsusedforthe