摘要:
A process for production of unsaturated fatty acid-containing oils which is characterized by culturing a microorganism belonging to the genus Mortierella subgenus Mortierella in a medium containing a nitrogen source derived from soybean, and collecting the unsaturated fatty acid-containing oil from the cultured product. The oils are obtained with a low 24,25-methylenecholest-5-en-3β-ol content.
摘要:
There are provided polyunsaturated fatty acids-containing oils/fats or triglycerides with high digestion and absorption properties and resistance to oxidative damage, which are suitable for applications in fields such as modified milk for infants, food products and healthy foods and/or supplements, produced by transesterification of polyunsaturated fatty acids-containing oils/fats or triglycerides with vegetable oils/fats or triglycerides using 1,3-position specific type lipases.
摘要:
A process for producing lipids containing arachidonic acid comprising culturing a microorganism in which ω3 desaturase activity has been decreased or is lacking at a temperature lower than the optimum growth temperature from the start of culturing or after culturing at the optimum growth temperature, said microorganism being obtained by the mutation treatment of a microorganism capable of producing arachidonic acid and belonging to the genus Mortierella and the like; and then recovering lipids containing arachidonic acid from the culture.
摘要:
The present invention provides a process for producing a highly unsaturated fatty acid-containing lipid which is less expensive than existing ones, which comprises culturing a microorganism belonging to the genus Mortierella with the use of, as a medium carbon source, a saccharified starch, which is less expensive than glucose, does not contribute to an increase in osmotic pressure of the culture medium, and can be utilized by the Mortierella microorganism, and collecting a highly unsaturated fatty acid-containing lipid from the culture.
摘要:
A method for preservation of a microorganism capable of microbial production of a polyunsaturated fatty acid or a compound comprising a polyunsaturated fatty acid as a constituent fatty acid, which method comprises: (a) forming spores in a spore-forming medium at pH 4-7 containing a nutrient source comprising an inorganic salt and a saccharide; (b) suspending the spores obtained in (a) in sterilized water, or sterilized water containing a surfactant and/or an inorganic salt to prepare a spore suspension, and adding a cryoprotectant at 5-15% to prepare a cryopreserving spore suspension; and (c) preserving the cryopreserving spore suspension obtained in (b) at between −100° C. and −20° C.
摘要:
The present invention relates to a production method of an oil containing triglyceride in which medium chain fatty acids are bound to the 1- and 3-positions of the triglyceride and polyunsaturated fatty acid is bound to the 2 position by allowing lipase, which specifically acts on ester bonds at the 1- and 3-positions that has been immobilized on a porous ion exchange resin support having a pore size of about 100 Angstroms or more, to act on a mixture of medium-chain fatty acids and raw material oil containing at least one polyunsaturated fatty acid selected from the group consisting of ω6 series polyunsaturated fatty acid having 18 or more carbon atoms and 3 or more double bonds and ω9 series polyunsaturated fatty acid having 18 or more carbon atoms and 2 or more double bonds, but not containing ω3 series polyunsaturated fatty acid, oils and fats or triglycerides obtained by that method, and the use of the oils and fats or triglycerides in a food, beverage or pharmaceutical composition.
摘要:
The present invention relates to a production method of an oil containing triglyceride in which medium chain fatty acids are bound to the 1- and 3-positions of the triglyceride and polyunsaturated fatty acid is bound to the 2 position by allowing lipase, which specifically acts on ester bonds at the 1- and 3-positions that has been immobilized on a porous ion exchange resin support having a pore size of about 100 Angstroms or more, to act on a mixture of medium-chain fatty acids and raw material oil containing at least one polyunsaturated fatty acid selected from the group consisting of ω6 series polyunsaturated fatty acid having 18 or more carbon atoms and 3 or more double bonds and ω9 series polyunsaturated fatty acid having 18 or more carbon atoms and 2 or more double bonds, but not containing ω3 series polyunsaturated fatty acid, oils and fats or triglycerides obtained by that method, and the use of the oils and fats or triglycerides in a food, beverage or pharmaceutical composition.
摘要:
A method of culturing a microorganism capable of producing at least any one of a highly unsaturated fatty acid or a compound containing a highly unsaturated fatty acid as a constituent fatty acid in a culture medium containing at least a carbon source and a nitrogen source, using an aeration-agitation culture device capable of adjusting and controlling an agitation power and an aeration amount. The method comprises the steps of performing mechanical agitation for a predetermined time after start of culture, where the agitation power per unit liquid amount is 269 (W/m3) or less, and after the predetermined time has passed, adjusting and controlling at least any one of the maximum aeration amount and a maximum power required for agitation to a range which satisfies that KLA (=(P/V)0.95Vs0.67) is 59 or more, an air flow rate parameter Vs0.67 is 0.075 or more, and a required agitation power parameter (P/V)0.95 is 203 or more, where P represents power required for agitation (W), V represents a liquid amount (m3), and Vs represents an air flow rate (m/sec).
摘要:
The present invention provides domestic fowl eggs having a high content of arachidonic acid and optionally docosahexaenoic acid obtained by feeding egg-laying domestic fowls &ohgr;6 highly unsaturated fatty acids and optionally &ohgr;3 highly unsaturated fatty acids, their production process, a lipid that originates from them, and a food that contains said lipid.
摘要:
An edible oil obtained by culturing a microorganism belong to the genus Mortierella subgenus Mortierella in a medium containing a nitrogen source derived from soybean is discussed. The oils obtained have a low 24,25-methylenecholest-5-en-3β-ol content.