“…A range of starch-degrading enzyme activities have been reported in potato tubers, including a-amylase, isoamylase, p-amylase, a-glucosidase, and phosphorylase (Gerbrandy et al, 1975;Kennedy and Isherwood, 1975;Fan, 1975;Killilea and Clancy, 1978;Schneider et al, 1981;Cochrane et a]., 1991aCochrane et a]., , 1991bCottrell et a]., 1993). However, it is not clear whether the degradation is primarily amylolytic or phosphorolytic.…”