High-solubility rebaudioside D complex

1 . A complex comprising:

Reb. D; and

erythritol

wherein the water solubility of Reb. D at a water temperature of 25° C. is 75 to 700 mg/100 g-H 2 O,

wherein the complex excludes a complex obtained by a spray drying method, and

wherein the complex has a peak at at least one selected from 2θ=14.8±0.2 deg, 20.2±0.2 deg, 24.5±0.2 deg and 27.9±0.2 deg in X-ray diffraction (CuKα: λ=1.5405 Å).

2 . The complex according to claim 1 , wherein the complex comprises a eutectic crystal.

3 . The complex according to claim 1 , wherein the content of Reb. D is an amount equal to or less than the saturation solubility relative to the erythritol.

4 . The complex according to claim 1 , wherein the content of Reb. D is 10 to 300 mg relative to 1 g of erythritol.

5 . The complex according to claim 1 ,

wherein the complex further comprises fructose, and

wherein the content of Reb. D is 10 to 300 mg relative to 1 g of the total of the erythritol and fructose.

6 . A sweetener composition comprising the complex according to claim 1 .

7 . The sweetener composition according to claim 6 , further comprising at least one selected from the group consisting of Reb. A, Reb. B, Reb. C, Reb. E, Reb. F, Reb. G, Reb. I, Reb. J, Reb. K, Reb. M, Reb. N, Reb. O, Reb. Q, Reb. R, Reb. V, Reb. W, Reb. KA, dulcoside A, rubusoside, steviol, steviolmonoside, steviolbioside, stevioside, sucrose, high fructose corn syrup, erythritol, Mogroside V, corn syrup, aspartame, sucralose, acesulfame potassium, saccharin and xylitol.

8 . A food or beverage comprising the complex according to claim 1 .

9 . The complex according to claim 1 , wherein the complex further comprises at least one carbohydrate other than erythritol.

10 . The complex according to claim 9 , wherein the content of Reb. D is 10 to 300 mg relative to 1 g of the erythritol and the at least one carbohydrate other than erythritol.