TABLE 2.

Comparison of turanose and trehalulose formation by DgAS and NpAS expressed as the percentage of the glucosyl units coming from sucrose transferred onto fructose

Reaction conditions	Enzyme
	NpAS				DgAS
	30 °C		37 °C (optimum temperature)		30 °C		50 °C (optimum temperature)
	Sucrose 100 mm	Sucrose, 100 mm, fructose, 100 mm	Sucrose, 100 mm	Sucrose, 100 mm, fructose, 100 mm	Sucrose, 100 mm	Sucrose, 100 mm, fructose, 100 mm	Sucrose, 100 mm	Sucrose, 100 mm, fructose, 100 mm
% of glucosyl residues in turanose	20.6	51.9	19.4	44.0	12.9	34.1	12.4	33.4
% of glucosyl residues in trehalulose	4.5	11.9	4.1	9.0	12.8	35.2	10.6	26.5