WO2015068764A1 - フラクトオリゴ糖の製造方法 - Google Patents
フラクトオリゴ糖の製造方法 Download PDFInfo
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- WO2015068764A1 WO2015068764A1 PCT/JP2014/079450 JP2014079450W WO2015068764A1 WO 2015068764 A1 WO2015068764 A1 WO 2015068764A1 JP 2014079450 W JP2014079450 W JP 2014079450W WO 2015068764 A1 WO2015068764 A1 WO 2015068764A1
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- dissolved oxygen
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y101/00—Oxidoreductases acting on the CH-OH group of donors (1.1)
- C12Y101/03—Oxidoreductases acting on the CH-OH group of donors (1.1) with a oxygen as acceptor (1.1.3)
- C12Y101/03004—Glucose oxidase (1.1.3.4)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y302/00—Hydrolases acting on glycosyl compounds, i.e. glycosylases (3.2)
- C12Y302/01—Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds (3.2.1)
- C12Y302/01026—Beta-fructofuranosidase (3.2.1.26), i.e. invertase
Definitions
- the present invention relates to a method for producing fructooligosaccharides. Specifically, the present invention relates to a method for efficiently and efficiently preparing a fructooligosaccharide-rich sugar solution.
- Fructooligosaccharide is an oligosaccharide in which one or more fructose residues are bound to sucrose (GF) by a ⁇ 2-1 bond.
- GF2 1-kestose
- GF3 nystose
- GF4 fructosylnystose
- commercially available fructooligosaccharide products contain 1-kestose, nystose, and fructosyl nystose as major components.
- Fructooligosaccharide has useful properties such as caries resistance, bifidobacteria growth promoting action and mineral absorption promoting action.
- Patent Documents 1 to 4 methods for efficiently producing high-purity fructooligosaccharides have been proposed.
- the fructooligosaccharide content in the reaction solution obtained by the enzyme reaction is generally about 40 to 60%. Therefore, in order to efficiently separate fructooligosaccharides and specific sugar components from the reaction solution, it is necessary to additionally carry out separation and purification means such as chromatographic separation (Patent Documents 3 and 4). In the case of introducing chromatographic separation, not only does the cost of installing dedicated equipment arise, but the manufacturing process becomes complicated.
- an object of this invention is to provide the method of manufacturing a fructooligosaccharide cheaply and efficiently.
- the present inventors have maintained the concentration of dissolved oxygen in the enzyme reaction solution at 2 ppm or higher so that the fructooligosaccharide content is 90% or higher. It has been found that a certain sugar solution can be obtained quickly. Furthermore, it has been found that the production efficiency of fructooligosaccharides can be maintained even by scaling up to a level capable of industrial production by introducing a microbubble generator as a means for maintaining the dissolved oxygen concentration in the enzyme reaction solution. The present invention is based on this finding.
- a method for producing sugar is provided.
- a method for producing fructooligosaccharide comprising a step of preparing a reaction mixture containing sucrose, ⁇ -fructofuranosidase and glucose oxidase, and the reaction mixture under the optimum conditions for the ⁇ -fructofuranosidase Incubating, wherein the amount of dissolved oxygen is adjusted to 2-8 ppm in the incubating step.
- the fructooligosaccharide is a sugar solution having a fructooligosaccharide content of 90% or more.
- the method according to any one of (1) to (3) which is carried out using a reaction tank having an aeration means and a stirring means.
- the ventilation means is a fine bubble generator.
- a sugar solution having a fructooligosaccharide content of 90% or more can be obtained quickly.
- the content of fructooligosaccharides in the obtained sugar liquid is high, high-purity fructooligosaccharides can be provided at low cost without using additional separation and purification means such as chromatographic separation.
- the production efficiency is usually lower than the laboratory level.
- a sugar solution having a fructooligosaccharide content of 90% or more can be obtained after the scale-up. Obtainable.
- the fructooligosaccharide obtained by the method for producing fructooligosaccharide of the present invention can be suitably used for products such as various foods and beverages and pharmaceuticals.
- the present invention relates to a reaction in which ⁇ -fructofuranosidase is allowed to act on sucrose to produce fructooligosaccharide, and a reaction step in which glucose by-product is reduced by glucose oxidase, so that the amount of dissolved oxygen is 2 ppm or more. This is a method for producing fructooligosaccharides.
- the above reaction step can be achieved by preparing a reaction mixture containing sucrose and the necessary enzymes and placing it under optimal conditions. Therefore, according to another aspect of the present invention, there is provided a method for producing a fructooligosaccharide, the step of preparing a reaction mixture containing sucrose, ⁇ -fructofuranosidase and glucose oxidase, and the reaction mixture comprising the above ⁇ Incubating under optimal conditions of fructofuranosidase, wherein a method is provided wherein the dissolved oxygen content is adjusted to 2 ppm or more in the incubation step.
- “fructooligosaccharide” means 1-kestose (GF2), nystose (GF3), fructosyl nystose (GF4) and a mixture thereof.
- ⁇ -fructofuranosidase having fructose transfer activity such that the conversion rate from sucrose to 1-kestose is 40% or more can be used.
- Aspergillus Aspergillus
- Penicillium Piericillium
- Scopulariopsis Spulariopsis
- Aspergillus niger Aspergillus niger
- It is derived from Aspergillus japonicus , and more preferably derived from Aspergillus japonicus ATCC20611 strain.
- the reaction between sucrose and ⁇ -fructofuranosidase is performed in a solution.
- the sucrose concentration in the reaction solution may be appropriately selected in consideration of the specific activity of the enzyme, the reaction temperature, etc., as long as sucrose can be dissolved. For example, a range of 5 to 80% by weight is preferable, and a range of 20 to 70% by weight is more preferable.
- the amount of ⁇ -fructofuranosidase added may be an amount that can sufficiently utilize sucrose in the enzyme reaction solution.
- the amount is adjusted to 1 U to 30 U, preferably 2 U to 15 U, with respect to 1 g of sucrose.
- the enzyme unit (U) of ⁇ -fructofuranosidase described above is defined as follows. When 2.0 mL of a 25% sucrose solution, 1.0 mL of enzyme solution, and 2.0 mL of Mclvaine buffer (pH 5.0) were mixed and reacted at 40 ° C. for 60 minutes, 1 ⁇ mol of 1-kestose was added per minute. The amount of enzyme to be generated is 1U.
- the reaction time of sucrose and ⁇ -fructofuranosidase can be appropriately changed until the fructooligosaccharide content is maximized.
- the time from the start of the enzyme reaction until the fructooligosaccharide content in the reaction solution reaches 90% or more can be 6 to 80 hours, preferably 6 to 27 hours.
- the method of the present invention reduces glucose by converting ⁇ -fructofuranosidase to sucrose to produce fructooligosaccharides and converting by-product glucose to gluconic acid by glucose oxidase.
- the glucose oxidase used in the method of the present invention for example, from Aspergillus niger glucose oxidase or Penicillium chrysogenum (Penicillium chrysogenum) can be used those derived from such.
- Commercial glucose oxidase preparations may have invertase activity as a side activity. Some enzyme preparations containing invertase exhibit a strong activity of hydrolyzing the generated fructooligosaccharides. Therefore, it is desirable that the glucose oxidase used in the method of the present invention has a weak invertase activity that hydrolyzes fructooligosaccharides or does not contain an invertase activity.
- the amount of glucose oxidase added may be an amount sufficient to convert by-produced glucose. For example, it is adjusted so as to be 1 U or more, preferably 4 U or more with respect to 1 g of sucrose.
- the enzyme unit (U) of glucose oxidase is defined as follows. Glucose oxidase is allowed to act on glucose as a substrate to produce hydrogen peroxide. Peroxidase is allowed to act in the presence of the generated hydrogen peroxide, 4-aminoantipyrine and phenol, and the generated quinoimine dye is measured and quantified at a wavelength of 500 nm. The amount of enzyme required to oxidize 1 ⁇ mol of glucose per minute under the condition of pH 7.0 is 1 U.
- Hydrogen peroxide is by-produced in the reaction of converting glucose into gluconic acid by glucose oxidase. Since the enzyme may be deactivated by the oxidizing action of hydrogen peroxide, it is desirable to add a catalase that decomposes hydrogen peroxide as necessary.
- the method of the present invention further includes a method of removing by-produced hydrogen peroxide with catalase in the reaction step with glucose and glucose oxidase.
- the catalase used is preferably derived from Aspergillus niger or Micrococcus lysodeikticus .
- the above-described method includes not only using a glucose oxidase preparation and a catalase preparation in combination, but also selecting and using a commercially available glucose oxidase preparation having a catalase activity as a side activity.
- the amount of catalase added may be sufficient to convert the by-produced hydrogen peroxide into oxygen and water. For example, it adjusts so that it may become 10U or more with respect to 1g of sucrose, Preferably it is 100U or more.
- the reaction temperature and pH of the reaction step between sucrose and ⁇ -fructofuranosidase and the by-product glucose and glucose oxidase are carried out under the optimum conditions of ⁇ -fructofuranosidase.
- the temperature is preferably about 20 to 70 ° C. and the pH is preferably about 4 to 10, more preferably 25 to 40 ° C. and pH 5 to 8.
- the pH of the reaction solution When converting glucose into gluconic acid, the pH of the reaction solution is lowered by gluconic acid. When the pH of the reaction solution decreases, the reaction for converting sucrose to fructooligosaccharide stops, acid hydrolysis of the generated fructooligosaccharide, or the like occurs. Therefore, it is desirable to adjust the pH to near neutrality by appropriately adding a neutralizing agent to the reaction solution.
- a neutralizing agent examples include sodium carbonate, calcium carbonate, calcium hydroxide, sodium hydroxide, potassium hydroxide, and aqueous ammonia.
- the amount of dissolved oxygen in the reaction solution can be determined by a method known in the art, for example, a chemical analysis method (titration method), an electrochemical analysis method (diaphragm electrode method), a photochemical analysis method (fluorescence method), or the like. Although it can be measured, it is preferably measured by an electrochemical analysis method (diaphragm electrode method).
- the amount of aeration is at least 3 L / min. Preferably it is 10 L / min or more, More preferably, it is 20 L / min or more.
- a fine bubble refers to a bubble having a bubble diameter of centimeter size, millimeter size, and micrometer size among bubbles generated in a reaction solution.
- the residence time in the reaction solution is increased. By retaining fine bubbles in the reaction solution, the reaction time from the start of the enzyme reaction until obtaining a sugar solution having a fructooligosaccharide content of 90% or more is shortened.
- an aeration means in an enzyme reaction system of about 2 L, it is preferable to provide a pipe (aeration pipe) for continuously supplying air in the reaction tank.
- a pipe aeration pipe
- fine bubbles can be retained in the enzyme reaction liquid by high-speed stirring at a stirring speed of 600 rpm or more by stirring means such as a stirring blade in addition to aeration from a pipe.
- stirring means such as a stirring blade in addition to aeration from a pipe.
- a device for generating fine bubbles at the end of the pipe that is, a “fine bubble generating device” is provided.
- the device examples include an air stone (Ibuki Air Stone # 150), an aerator (OHR aerator: OHR Fluid Engineering Laboratory Co., Ltd.), Aqua Blaster (registered trademark: Ience Co., Ltd.), a microbubble generator, and the like. Can be mentioned.
- the number of stirring is desirably 300 rpm or less, preferably 200 rpm or less.
- the resistance of the sugar solution to the stirring blade is large, so that the load due to high-speed stirring is greater than that of a general oxidoreductase reaction.
- 50L scale or more it is 50 rpm or less, preferably 20 rpm or less.
- the fructooligosaccharide obtained by the method of the present invention is preferably a sugar solution having a fructooligosaccharide content of 90% or more.
- “Fructooligosaccharide content” refers to the total content of neutral sugars (fructose, glucose, sucrose, 1-kestose, nystose, and fructosyl nystose) contained in the sugar solution, 1-kestose, nystose and It means the combined content of fructosyl nystose.
- the sugar composition of the neutral sugar described above can be analyzed, for example, under the following HPLC conditions.
- a known separation and purification treatment can be additionally performed on the sugar solution containing fructooligosaccharide.
- the separation and purification treatment include a treatment for adjusting the gluconic acid content by means such as electrodialysis, a treatment for concentration by means such as an evaporator, and a treatment for drying by means such as a vacuum dryer.
- the fructooligosaccharides obtained by the method of the present invention can be widely applied to known beverages, foods and pharmaceuticals because they can be produced at low cost.
- Reference Example 1 Preparation of ⁇ - fructofuranosidase 350 mL of a medium containing 2.0% powdered broth, 5.0% sucrose and 0.5% CMC was placed in an Erlenmeyer flask and sterilized, and then the Aspergillus japonicus ATCC20611 strain was planted. Inoculated and cultured at 28 ° C. for 20 hours to prepare a seed culture. A 30 L jar fermenter was charged with 15 L of a medium containing 5.0% sucrose, 3.6% yeast extract and 0.5% CMC, adjusted to pH 6.5, and then sterilized at 120 ° C. for 30 minutes.
- the culture broth was centrifuged and freeze-dried to obtain a crude enzyme cell having fructose transfer activity.
- the fructose transfer activity of the crude enzyme cells was 1,580 U / g (cell weight).
- the fructose transfer activity is as follows when 2.0 mL of a 25% sucrose solution, 1.0 mL of enzyme solution, and 2.0 mL of Mclvaine buffer (pH 5.0) are mixed and reacted at 40 ° C. for 60 minutes. This is a value defined as 1 U (unit) for the amount of enzyme that produces 1 ⁇ mol of 1-kestose per minute.
- the crude enzyme cells were lyophilized and used as ⁇ -fructofuranosidase in subsequent tests.
- Example 1 Production of fructooligosaccharides (1) 2L scale-1 The enzyme reaction was performed under the following conditions. Substrate solution: 578 g of sucrose dissolved in 1350 g of distilled water (sucrose 30% by weight) Enzyme solution: ⁇ -fructofuranosidase with 5.19 U added to 1 g of sucrose (Reference Example 1) 3,000 U Glucose oxidase (trade name: Hyderase 15, Amano Enzyme, containing catalase activity as a side activity) 3,000 U Temperature: 30 ° C pH: 7.0 Stirring speed: 600rpm Aeration rate: 3 L / min (performed continuously through a pipe with a hole diameter of 1 mm arranged at the bottom of the reaction vessel)
- the reaction solution from 0 to 24 hours after the start of the enzyme reaction was sampled.
- the sampled reaction solution was heated in a hot water bath set at 82 ° C. for 30 minutes to deactivate the enzyme, thereby terminating the reaction.
- the solution was filtered with a filter paper and a 0.45 ⁇ m filter.
- the sugar composition analysis was performed about each obtained reaction liquid.
- the sugar composition analysis was performed under the following conditions.
- the total content of the neutral sugars fructose, glucose, sucrose, 1-kestose, nystose, and fructosyl nystose was taken as 100%, and each content was determined from the content of each component.
- the fructooligosaccharide content was calculated by combining the content of 1-kestose, nystose and fructosyl nystose. The results are shown in Table 1. Abbreviations in the table mean the following.
- F fructose G: glucose GF: sucrose GF2: 1-kestose GF3: nystose GF4: fructosyl nystose
- FOS fructooligosaccharide (addition of GF2 + GF3 + GF4)
- the content of fructooligosaccharide was 90% or more after 20 hours from the start of the enzyme reaction. After 24 hours from the start of the enzyme reaction, a sugar solution having a fructooligosaccharide content of 95% or more was obtained.
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P)
- the dissolved oxygen amount was 3 ppm or more (3 to 6 ppm) in the reaction time of 2 to 24 hours. there were.
- Example 2 Production of fructooligosaccharides (2) 2L scale-2
- the enzyme reaction was performed under the following conditions.
- Substrate solution 578 g of sucrose dissolved in 1350 g of distilled water (sucrose 30% by weight)
- Enzyme solution ⁇ -fructofuranosidase with 5.19 U added to 1 g of sucrose (Reference Example 1)
- 3,000 U Glucose oxidase (trade name: Hyderase 15, see Example 1)
- Stirring speed A) 400 rpm, B) 600 rpm, C) 800 rpm
- Aeration rate 3 L / min (performed continuously through a pipe with a hole diameter of 1 mm arranged at the bottom of the reaction vessel)
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P).
- the reaction solution was sampled from 0 to 30 hours (35 hours in the 400 rpm test section) from the start of the enzyme reaction.
- the sampled reaction solution was processed in the same manner as in Example 1 and analyzed for sugar composition.
- Table 2 Table 3, and Table 4 show the results of the test sections where the number of stirring was 400 rpm, 600 rpm, and 800 rpm, respectively.
- DO means “dissolved oxygen amount”.
- the air supplied from the pipe having a hole diameter of 1 mm arranged at the bottom of the reaction vessel was finely dispersed in the solution by the rotating stirring blade.
- the number of stirring was 600 rpm or more, the bubbles were well distributed in the reaction vessel in a very fine state. Therefore, when the number of stirring is 600 rpm or more, it is considered that oxygen necessary for the glucose oxidase reaction was supplied in a sufficient amount in any time zone of the enzyme reaction.
- Example 3 Production of fructooligosaccharides (3) 2L scale-3
- the enzyme reaction was performed under the following conditions. In Example 3, the enzyme amount 2 to 3 times that in Examples 1 and 2 was added.
- Substrate solution 578 g of sucrose dissolved in 1350 g of distilled water (sucrose 30% by weight)
- Enzyme solution ⁇ -fructofuranosidase (Reference Example 1) 8,764 U (15.2 U added to 1 g of sucrose)
- Glucose oxidase (trade name: Hyderase 15, see Example 1) 9,000 U (15.6 U added to 1 g of sucrose)
- Temperature 30 ° C pH: 7.0
- Stirring speed A) 300 rpm, B) 400 rpm, C) 500 rpm, D) 600 rpm, E) 700 rpm, F) 800 rpm
- Aeration rate 3 L / min (performed continuously through a pipe with a hole diameter of 1 mm arranged at the bottom of the reaction vessel
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P).
- the reaction solution from 0 to 8 hours after the start of the enzyme reaction was sampled.
- the sampled reaction solution was processed in the same manner as in Example 1 and analyzed for sugar composition. The results are shown in Tables 5-10.
- the content of fructooligosaccharide is 90% by setting the dissolved oxygen content in the enzyme reaction solution to at least 2 ppm (2 to 6 ppm), preferably 3 ppm or more (3 to 6 ppm) on the 2L scale. % Of the sugar solution was obtained.
- the aeration and stirring conditions for maintaining the dissolved oxygen amount were 3 L / min or more and a stirring rate of 600 rpm or more (600 to 800 rpm).
- Example 4 Production of Fructooligosaccharide (4) Enzymatic reaction was carried out under conditions of 10 L scale or less.
- Substrate solution 2890 g of sucrose dissolved in 6750 g of distilled water (sucrose 30% by weight)
- Enzyme solution ⁇ -fructofuranosidase (Reference Example 1) 15,000 U (5.19 U added to 1 g of sucrose)
- Glucose oxidase (trade name: Hyderase 15, see Example 1) 13,000 U (4.50 U added to 1 g of sucrose)
- Temperature 30 ° C pH: 7.0
- Stirring speed 150 rpm
- Air flow A) 3 L / min (performed continuously through Ibuki Air Stone 30 mm ⁇ 150 mm # 150 (average pore diameter 12 ⁇ m, maximum 44 ⁇ m)); B) 10 L / min (performed continuously through Ibuki Air Stone 30 mm ⁇ 150 mm # 150 (average pore diameter 12 ⁇ m, maximum 44 ⁇ m
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P).
- TOA DK Corporation DO-14P
- the reaction solution was sampled from 0 to 5 hours after the start of the enzyme reaction, and in the test group B from 0 to 22 hours.
- the sampled reaction solution was processed in the same manner as in Example 1 and analyzed for sugar composition. The results are shown in Tables 11-12.
- test section B the enzyme reaction was started with an aeration rate of 10 L / min.
- the dissolved oxygen level was maintained at about 3 to 6 ppm (2.9 to 5.8 ppm) from the start of the reaction until 22 hours later.
- test group B a sugar solution having a fructooligosaccharide content of 90% or more could be obtained 15 hours after the start of the enzyme reaction.
- Example 5 Production of fructooligosaccharide (5) Enzymatic reaction was carried out under the condition of 50L scale or less. Substrate solution: 17.34 kg of sucrose is dissolved in 40.5 kg of distilled water (30% by weight of sucrose) Enzyme solution: ⁇ -fructofuranosidase (Reference Example 1) 89,880 U (added 5180 U to 1 kg of sucrose) Glucose oxidase (trade name: Hyderase 15, see Example 1) 89,700 U (added 5170 U to 1 kg of sucrose) Temperature: 30 ° C pH: 7.0 Stirring speed: 100rpm Ventilation rate: 20 L / min (Ibuki Air Stone 30 mm ⁇ 150 mm # 150 (average pore diameter 12 ⁇ m, maximum 44 ⁇ m) is used, each aeration rate 5 L / min)
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P).
- the reaction solution from 0 to 28 hours after the start of the enzyme reaction was sampled.
- the sampled reaction solution was processed in the same manner as in Example 1 and analyzed for sugar composition. The results are shown in Table 13.
- a sugar solution having a fructooligosaccharide content of 90% or more can be obtained by setting the dissolved oxygen content in the enzyme reaction solution to at least 2 ppm or more, preferably 3 ppm or more (3 to 5 ppm) on the 50 L scale. I was able to get it. Further, the aeration and stirring conditions for maintaining the dissolved oxygen amount described above were an aeration amount of 20 L / min or more and a stirring number of 100 rpm or more. Since it is difficult to stir at a high speed of 600 rpm or higher on a 50 L scale, it was useful to introduce a device that generates fine bubbles as a ventilation means.
- Comparative Example 1 Production of fructooligosaccharide The enzyme reaction was performed under conditions of 4 t scale or less.
- Substrate solution Dissolve 4000 kg of sucrose with 9300 kg of distilled water (30% by weight of sucrose)
- Enzyme solution ⁇ -Fructofuranosidase (Reference Example 1) 5200 U added glucose oxidase per 1 kg of sucrose (trade name: Hyderase 15, see Example 1) 6300 U added temperature per 1 kg of sucrose Temperature: 30 ° C.
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P).
- the reaction solution at 0, 24 hours, and 80 hours after the start of the enzyme reaction was sampled.
- the sampled reaction solution was processed in the same manner as in Example 1 and analyzed for sugar composition.
- the sugar composition of the solution at the start of the enzyme reaction had a sucrose content of 100%.
- the sugar composition 24 hours after the start of the reaction was as follows.
- the amount of dissolved oxygen in the enzyme reaction solution was less than 2 ppm.
- the fructooligosaccharide content of the reaction solution 24 hours after the start of the reaction was 61.9%. Furthermore, when the sugar composition of the reaction solution after 80 hours was analyzed, the fructooligosaccharide content was 70%. In this test group, a sugar solution having a fructooligosaccharide content of 90% or more could not be obtained.
- Example 6 Production of fructooligosaccharide (6) An enzyme reaction was carried out under conditions of 4 t scale or less. Substrate solution: Dissolve 4000 kg of sucrose with 9300 kg of distilled water (30% by weight of sucrose) Enzyme solution: ⁇ -Fructofuranosidase (Reference Example 1) 5200 U added glucose oxidase per 1 kg of sucrose (trade name: Hyderase 15, see Example 1) 6300 U added temperature per 1 kg of sucrose Temperature: 30 ° C. pH: 6-7 Stirring speed: 20 rpm Aeration rate: 15.6 L / min
- the gas was continuously ventilated through a pipe a having a diameter of 4 cm arranged at the bottom of the reaction vessel.
- a pipe b having a diameter of 15 cm was arranged so as to cover the pipe a.
- the tip of the pipe b was arranged to protrude about 10 cm from the tip of the pipe a.
- a plate-like portion provided with a twist was provided at the most distal portion of the pipe b protruding from the pipe a.
- the amount of dissolved oxygen in the solution during the enzyme reaction was measured using a portable dissolved oxygen meter (TOA DK Corporation: DO-14P).
- the reaction solution at 0 and 80 hours after the start of the enzyme reaction was sampled.
- the sampled reaction solution was processed in the same manner as in Example 1 and analyzed for sugar composition.
- the amount of dissolved oxygen in the enzyme reaction solution was 2 ppm.
- the sugar composition of the solution at the start of the enzyme reaction had a sucrose content of 100%.
- the sugar composition 80 hours after the start of the reaction was as follows. Fructose: 4.0% Glucose: 0% Sucrose: 5.6% GF2: 23.0% GF3: 55.9% GF4: 11.5%
- a sugar solution having a fructooligosaccharide content of 90% or more could be obtained by setting the amount of dissolved oxygen in the enzyme reaction solution to at least 2 ppm or more.
- the aeration and stirring conditions for maintaining the dissolved oxygen amount were 15 L / min or more for the aeration amount and 20 rpm or more for the stirring rate.
- the amount of aeration was the same, but a sugar solution having a fructooligosaccharide content of 90% or more could be obtained by introducing a device for generating fine bubbles as a ventilation means. .
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Abstract
Description
(1)スクロースにβ-フラクトフラノシダーゼを作用させてフラクトオリゴ糖を生成する反応、及び前記反応によって副生するグルコースをグルコースオキシダーゼによって低減する反応工程において、溶存酸素量を2~8ppmとする、フラクトオリゴ糖の製造方法。
(2)フラクトオリゴ糖を製造する方法であって、スクロース、β-フラクトフラノシダーゼおよびグルコースオキシダーゼを含有する反応混合物を用意する工程、ならびに該反応混合物を、前記β-フラクトフラノシダーゼの最適条件下でインキュベートする工程、を含んでなり、該インキュベート工程において溶存酸素量が2~8ppmに調整される、方法。
(3)フラクトオリゴ糖が、フラクトオリゴ糖含有率90%以上の糖液である、(1)または(2)に記載の方法。
(4)通気手段及び撹拌手段を有する反応槽を用いて行なう、(1)~(3)のいずれかに記載の方法。
(5)通気手段が微細気泡発生装置である、(4)に記載の方法。
(6)溶存酸素量が2~6ppm、好ましくは3~6ppmである、(1)~(5)のいずれか1つに記載の方法。
粉末ブイヨン2.0%、スクロース5.0%、CMC0.5%を含む培地350mLを三角フラスコに入れて殺菌した後、アスペルギルス・ジャポニカス ATCC20611株を植菌し、28℃で20時間培養して、種培養液を調製した。30Lジャーファーメンターにショ糖5.0%、酵母エキス3.6%、CMC0.5%を含む培地15Lを入れて、pH6.5に調節した後、120℃で30分殺菌した。次いで、前記培地に前記種培養液350mLを無菌的に植菌し、28℃で72時間培養した。培養終了後、培養液を遠心分離して、さらに凍結乾燥することにより、フラクトース転移活性を有する粗酵素菌体を得た。前記粗酵素菌体のフラクトース転移活性は、1,580U/g(菌体重量)であった。なお、前記フラクトース転移活性は、25%スクロース溶液2.0mL、酵素液1.0mL、Mcllvaine緩衝液(pH5.0)2.0mLをそれぞれ混合して、40℃で60分反応させた時に、1分間に1μmolの1-ケストースを生成させる酵素量を1U(単位)として定義した値である。前記粗酵素菌体を凍結乾燥して、以降の試験におけるβ-フラクトフラノシダーゼとして用いた。
以下の条件で酵素反応を行なった。
基質溶液:スクロース578gを蒸留水1350gで溶解(スクロース30重量%)
酵素溶液:スクロース1gに対して、5.19U添加
β-フラクトフラノシダーゼ(参考例1)3,000U
グルコースオキシダーゼ(商品名:ハイデラーゼ15、天野エンザイム製、副活性としてカタラーゼ活性を含有する)3,000U
温度:30℃
pH:7.0
撹拌速度:600rpm
通気量:3L/分(反応槽底部に配置した孔径1mmの配管を通じて連続的に行なった)
F:フラクトース
G:グルコース
GF:スクロース
GF2:1-ケストース
GF3:ニストース
GF4:フラクトシルニストース
FOS:フラクトオリゴ糖(GF2+GF3+GF4の合算)
以下の条件で酵素反応を行なった。
基質溶液:スクロース578gを蒸留水1350gで溶解(スクロース30重量%)
酵素溶液:スクロース1gに対して、5.19U添加
β-フラクトフラノシダーゼ(参考例1)3,000U
グルコースオキシダーゼ(商品名:ハイデラーゼ15、実施例1参照)3,000U
温度:30℃
pH:7.0
撹拌速度:A)400rpm、B)600rpm、C)800rpm
通気量:3L/分(反応槽底部に配置した孔径1mmの配管を通じて連続的に行なった)
以下の条件で酵素反応を行なった。実施例3では、実施例1及び2に対して2~3倍の酵素量を添加した。
基質溶液:スクロース578gを蒸留水1350gで溶解(スクロース30重量%)
酵素溶液:
β-フラクトフラノシダーゼ(参考例1)8,764U(スクロース1gに対して、15.2U添加)
グルコースオキシダーゼ(商品名:ハイデラーゼ15、実施例1参照)9,000U(スクロース1gに対して、15.6U添加)
温度:30℃
pH:7.0
撹拌速度:A)300rpm、B)400rpm、C)500rpm、D)600rpm、E)700rpm、F)800rpm
通気量:3L/分(反応槽底部に配置した孔径1mmの配管を通じて連続的に行なった)
以下の条件で酵素反応を行なった。
基質溶液:スクロース2890gを蒸留水6750gで溶解(スクロース30重量%)
酵素溶液:
β-フラクトフラノシダーゼ(参考例1)15,000U(スクロース1gに対して5.19U添加)
グルコースオキシダーゼ(商品名:ハイデラーゼ15、実施例1参照)13,000U(スクロース1gに対して4.50U添加)
温度:30℃
pH:7.0
撹拌速度:150rpm
通気量:
A)3L/分(いぶきエアストーン30mm×150mm#150(平均細孔径12μm、最大44μm)を通じて連続的に行なった);
B)10L/分(いぶきエアストーン30mm×150mm#150(平均細孔径12μm、最大44μm)を通じて連続的に行なった)
以下の条件で酵素反応を行なった。
基質溶液:スクロース17.34kgを蒸留水40.5kgで溶解(スクロース30重量%)
酵素溶液:
β-フラクトフラノシダーゼ(参考例1)89,880U(スクロース1kgに対して5180U添加)
グルコースオキシダーゼ(商品名:ハイデラーゼ15、実施例1参照)89,700U(スクロース1kgに対して5170U添加)
温度:30℃
pH:7.0
撹拌速度:100rpm
通気量:20L/分(いぶきエアストーン30mm×150mm#150(平均細孔径12μm、最大44μm)を4本使用、各通気量5L/分)
以下の条件で酵素反応を行なった。
基質溶液:スクロース4000kgを蒸留水9300kgで溶解(スクロース30重量%)
酵素溶液:
β-フラクトフラノシダーゼ(参考例1)スクロース1kgに対して5200U添加
グルコースオキシダーゼ(商品名:ハイデラーゼ15、実施例1参照)スクロース1kgに対して6300U添加
温度:30℃
pH:6~7
撹拌速度:20rpm
通気量:15.6L/分(反応槽底部に配置した直径4cmの配管の先端約20cm部分に設けられた孔径25μmの細孔を有するメッシュを通じて連続的に行なった)
フラクトース :1.2%
グルコース :25.5%
スクロース :11.4%
GF2 :39.7%
GF3 :21.2%
GF4 :1.0%
フラクトオリゴ糖(GF2+GF3+GF4):61.9%
以下の条件で酵素反応を行なった。
基質溶液:スクロース4000kgを蒸留水9300kgで溶解(スクロース30重量%)
酵素溶液:
β-フラクトフラノシダーゼ(参考例1)スクロース1kgに対して5200U添加
グルコースオキシダーゼ(商品名:ハイデラーゼ15、実施例1参照)スクロース1kgに対して6300U添加
温度:30℃
pH:6~7
撹拌速度:20rpm
通気量:15.6L/分
フラクトース :4.0%
グルコース :0%
スクロース :5.6%
GF2 :23.0%
GF3 :55.9%
GF4 :11.5%
フラクトオリゴ糖(GF2+GF3+GF4):90.4%
Claims (6)
- スクロースにβ-フラクトフラノシダーゼを作用させてフラクトオリゴ糖を生成する反応、及び前記反応によって副生するグルコースをグルコースオキシダーゼによって低減する反応工程において、溶存酸素量を2~8ppmとする、フラクトオリゴ糖の製造方法。
- フラクトオリゴ糖を製造する方法であって、スクロース、β-フラクトフラノシダーゼおよびグルコースオキシダーゼを含有する反応混合物を用意する工程、ならびに該反応混合物を、前記β-フラクトフラノシダーゼの最適条件下でインキュベートする工程、を含んでなり、該インキュベート工程において溶存酸素量が2~8ppmに調整される、方法。
- フラクトオリゴ糖が、フラクトオリゴ糖含有率90%以上の糖液である、請求項1または2に記載の方法。
- 通気手段及び撹拌手段を有する反応槽を用いて行なう、請求項1~3のいずれか一項に記載の方法。
- 通気手段が微細気泡発生装置である、請求項4に記載の方法。
- 溶存酸素量が2~6ppmである、請求項1~5のいずれか一項に記載の方法。
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CA2928560A CA2928560A1 (en) | 2013-11-06 | 2014-11-06 | Production method for fructooligosaccharide |
CN201480060591.XA CN105814212A (zh) | 2013-11-06 | 2014-11-06 | 果寡糖的制备方法 |
US15/034,211 US20160273008A1 (en) | 2013-11-06 | 2014-11-06 | Production method for fructooligosaccharide |
KR1020167011890A KR20160087804A (ko) | 2013-11-06 | 2014-11-06 | 프락토올리고당의 제조 방법 |
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TWI631215B (zh) * | 2017-04-25 | 2018-08-01 | 財團法人食品工業發展研究所 | 果寡糖組成物及其製備方法 |
GB201805577D0 (en) | 2018-04-04 | 2018-05-16 | Optibiotix Health Ltd | Prebiotic compositions and methods of production thereof |
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JPH0646717A (ja) * | 1992-07-30 | 1994-02-22 | Masakuni Kanai | 養魚用酸素補給方法およびその装置 |
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EP2918594B1 (en) * | 2012-11-12 | 2017-05-10 | Meiji Co., Ltd. | Nystose crystal-containing powder |
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KR20160087804A (ko) | 2016-07-22 |
CA2928560A1 (en) | 2015-05-14 |
US20160273008A1 (en) | 2016-09-22 |
EP3067427A4 (en) | 2017-06-28 |
TW201528960A (zh) | 2015-08-01 |
JPWO2015068764A1 (ja) | 2017-03-09 |
CN105814212A (zh) | 2016-07-27 |
EP3067427A1 (en) | 2016-09-14 |
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