Abstract: The present invention relates to a method for producing a recombinant protein, the method including: a first step of culturing a recombinant cell expressing a recombinant protein under control of an inducible promoter in a medium containing galactose and at least two selected from the group consisting of mannitol, raffinose, and melibiose; and a second step of further culturing the recombinant cell under a condition that expression from the inducible promoter is induced after the first step.

Abstract: The present invention relates to a production method for a recombinant protein, the production method including a growth reduction step of reducing cell growth of recombinant cells which express a recombinant protein and a production step of producing the recombinant protein by culturing the recombinant cells in a protein production culture medium in a state of reducing the cell growth, in which the cell growth of the recombinant cells is reduced in the growth reduction step by using recombinant cells having at least one modified morphogenetic regulator as the recombinant cells.

Abstract: A fertilizer with silica hydrogel as a main component in which the amount of water to be desorbed in accordance with the passage of time is less than in conventional fertilizers. The fertilizer is prepared using silica hydrogel obtained by reacting an alkali silicate solution and a mineral acid, and performing one of the following treatments: (1) Aging under the conditions of a pH range of pH 4-8 and a temperature range of 40-100° C. (2) Aging under the conditions of a pH range of pH 6-8 and a temperature range of 60-85° C. (3) Aging under the conditions of a pH range of pH 4-8 and a temperature range of 40-100° C., and then changing the pH range to pH 2-6. (4) Contacting with a solution containing one or more kinds of ions selected from the group consisting of iron ions, magnesium ions, calcium ions, aluminum ions and ammonia ions.

Abstract: A fertilizer especially suitable for gramineous plants which has a high supplying ability and a high absorption/availability efficiency of silicic acid and a method for using the same. Silica gel was applied to a test field of paddy rice by 50 g/m2. The silicic acid content in stalks and leaves of paddy rice became extremely high compared with a case where a conventional silicic acid fertilizer was applied. As the result, the stalks became strong by being silicificated and therefore were prevented from being borne down even when ears became heavy with rice, and the harvest yield of rice increased.