| 摘要 |
An object of the present invention is to provide a lactosucrose high content saccharide which comprises 70% or more of lactosucrose, on a saccharide composition basis, with a lower content of 1-kestose and fructosyl lactosucrose as by-products. Another object of the present invention is to provide processes for producing a lactosucrose high content saccharide and high purity lactosucrose containing 90% or more of lactosucrose, on a saccharide composition basis, which are feasible for industrial production. Further object of the present invention is to provide a solid lactosucrose with low hygroscopicity and a solid composition comprising the same. The present invention solves above objects by providing a lactosucrose high content saccharide comprising 70% or more of lactosucrose and less than 3% of the total amount of 1-kestose and fructosyl lactosucrose, on a saccharide composition basis; a process for producing the lactosucrose high content saccharide, comprising the steps of allowing beta-fructofuranosidase, derived from a microorganism belonging to the genus Bacillus, and sucrose-unassimilable yeast to contact with an aqueous solution containing sucrose and lactose to obtain a reaction mixture comprising 70% or more of lactosucrose and less than 3% of the total amount of 1-kestose and fructosyl lactosucrose and collecting the resulting lactosucrose high content saccharide; a process for producing a high purity lactosucrose, comprising the steps of subjecting the lactosucrose high content saccharide to a chromatography using a resin and collecting fractions containing 90% or more of lactosucrose, on a saccharide composition basis; a process for producing crystalline lactosucrose; and various solid compositions prepared by incorporating the crystalline lactosucrose.
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