摘要:
Described is a detergent composition comprising (A) a sulfate ester surfactant, (B) at least one surfactant selected from amphoteric surfactants, amine oxide surfactants, alkanol amide surfactants and amide amino-acid surfactants, (C) a cationic bactericide and (D) a metal chelating agent, the weight ratio of said (A) to (B) being 1-50 and the content of said (C) being 0.2 wt. % to 5 wt. %.The detergent composition according to the present invention has excellent detergency, foamability and foam durability and at the same time, has high bactericidal effects because it can be mixed stably with a cationic bactericide.
摘要:
Disclosed herein are antifoaming agents for fermentation which include, as active ingredient at least one of (a) a reaction product obtained by adding at least one alkylene oxide to a mixture of a fat and/or oil with a trihydric or still higher polyhydric alcohol, or (b) a compound represented by the following general formula (1): ##STR1## wherein n stands for a number of 2-50, R.sup.1, R.sup.2 and R.sup.3 mean individually a hydrogen atom or an acyl group having 2-31 carbon atoms, x denotes an alkylene group having 2-4 carbon atoms, and m1, m2 and m3 are individually a number of 0-200, an L-amino acid-producing medium containing either one of these components, and a production process for L-amino acids making use of this medium. The use of this antifoaming agent permits the quick, sure and durable suppression of bubbling during incubation, and the overall production of the L-amino acid is significantly improved.
摘要:
An antifoaming agent for fermentation, which comprises (A) a reaction product obtained by the addition polymerization of 50 to 250 moles of ethylene oxide and propylene oxide (the molar ratio of ethylene oxide to propylene oxide=1:1 to 1:4 ) to 1 mole of a mixture composed of an oil or fat and a polyhydric alcohol containing at least three hydroxyl groups; and (B) a fatty acid, an alcohol, a polyoxyalkylene polyhydric alcohol ether, a polyoxyalkylene alkyl ether, a polyoxyalkylene fatty acid ester, a polyoxyalkylene alkyl ether fatty acid ester and/or a polyoxyalkylene polymer. The above antifoaming agent has both foam-breaking effects and foam-inhibiting effects so that it has excellent antifoaming effects and does not adversely affect the fermentation production.
摘要:
In the invention, a hydraulic powder is prepared by a step of grinding a hydraulic compound in the presence of compound (a) that is obtained by adding an alkyleneoxide having 2 to 4 carbon atoms to a compound which has no amino group, but has an active hydrogen, provided that polyethyleneglycol and polypropyleneglycol are excluded. Alternatively, the hydraulic compound can be ground in the presence of compound (a) and anti-foaming agent (b).
摘要:
According to the present invention, a hydraulic powder is prepared by including a step of grinding a hydraulic compound in the presence of (A) glycerin and (B) polyethyleneglycol that are present in a fixed weight ratio.
摘要:
According to the present invention, a hydraulic powder is prepared by including a step of grinding a hydraulic compound in the presence of (A) glycerin and (B) polyethyleneglycol that are present in a fixed weight ratio.
摘要:
In the invention, a hydraulic powder is prepared by a step of grinding a hydraulic compound in the presence of compound (a) that is obtained by adding an alkyleneoxide having 2 to 4 carbon atoms to a compound which has no amino group, but has an active hydrogen, provided that polyethyleneglycol and polypropyelenglycol are excluded. Alternatively, the hydraulic compound can be ground in the presence of compound (a) and anti-foaming agent (b).