摘要:
A first method for producing glucan comprises the step of allowing a reaction solution containing sucrose, a primer, inorganic phosphate or glucose-1-phosphate, sucrose phosphorylase, and glucan phosphorylase to react to produce glucans. The maximum value of the sucrose-phosphate ratio of the reaction solution from the start of the reaction to the end of the reaction is no more than about 17. A second method for producing glucan comprises the step of allowing a reaction solution containing sucrose, a primer, inorganic phosphate or glucose-1-phosphate, sucrose phosphorylase, and glucan phosphorylase to react to produce glucans. The reaction is conducted at a temperature of about 40 C to about 70 C.
摘要:
The present invention provides a technique for synthesizing a carotenoid composition by a genetic recombination technique. A transformant in which a first promoter, an upstream gene of a carotenoid biosynthesis gene including a crtY and crtZ operably linked to the first promoter, a second promoter having higher promoter intensity than the first promoter, and a ZEP gene and a CCS gene operably linked to the second promoter have been introduced into a host cell.
摘要:
Amethod for producing an amylose-containing rayon fiber, comprising the steps of: mixing an aqueous alkaline solution of amylose with viscose to obtain a mixed liquid, spinning the mixed liquid to obtain an amylose-containing rayon fiber, and bringing the amylose-containing rayon fiber into contact with iodine or polyiodide ions, thereby allowing an amylose in the amylose-containing rayon fiber to make a clathrate including the iodine or polyiodide ions, wherein the amylose is an enzymatically synthesized amylose having a weight average molecular weight of 3 x 10 4 or more and 2 x 10 5 or less. A method for collecting iodine from branckish water with high efficiency utilizing the amylase-containing rayon fibers.