Sugar Accumulation Cycle in Sugar Cane. I. Studies on Enzymes of the Cycle

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Abstract
Enzymes believed to be operative in the cyclic process of sugar storage by sugarcane storage tissue were isolated and described. Mature and immature storage tissue contained enzymes for the synthesis of sucrose phosphate, the synthesis, interconversion and breakdown of hexose phosphates, and the synthesis of uridinediphosphateglucose. Sucrose phosphorylase was not detected. Immature storage tissue contained 2 acid invertases; the major component was soluble and a minor component was associated with insoluble cell material. The only invertase present in mature tissue had a pH optimum of 7.0. The properties of these invertases are described.