CN1077138C - Fermentation technology using rice as raw material to produce citric acid - Google Patents
Fermentation technology using rice as raw material to produce citric acid Download PDFInfo
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- CN1077138C CN1077138C CN99123751A CN99123751A CN1077138C CN 1077138 C CN1077138 C CN 1077138C CN 99123751 A CN99123751 A CN 99123751A CN 99123751 A CN99123751 A CN 99123751A CN 1077138 C CN1077138 C CN 1077138C
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Abstract
The present invention relates to a fermentation technology for producing citric acid by using rice as raw materials, which comprises the steps of raw material preprocessing, pulp conditioning, liquifying, filtering, culture medium preparing, fermenting, etc. The present invention has the advantages of easy obtainment of raw materials, convenient storage, simple technology, high acid yield, high yield of fermentation clear solution and low production cost; in addition, the present invention can also decrease dust pollution in plant areas and improve environment with obvious effect. The present invention is suitable for Chinese citric acid industry, particularly for middle regions and southern regions in China. The present invention provides a new raw material for citrin manufacture factories, and opens up a novel path for the industrial application of early rice.
Description
The present invention relates to a kind of citric acid production zymotechnique, particularly relating to a kind of is the zymotechnique of raw material to produce citric acid with rice.
The raw material that present domestic citric acid production adopts usually has potato dry powder, wheat-flour, Semen Maydis powder etc. several.Chinese patent 85108564 " with fermentation of Aspergillus niger coproduction diosgenin and citric acid ", Chinese patent 92110021 " utilize wheat-flour production methods of citric acid " and Chinese patent 95111000 " preparation method of a kind of citric acid or Trisodium Citrate " discloses the processing method of utilizing potato dry powder, wheat-flour and Semen Maydis powder to produce citric acid respectively.As everyone knows, China's potato is done, the main producing region of wheat and corn is distributed in the north, for China southern citric acid producer, adopt that above-mentioned patented technology utilizes that potato is done, wheat and Maize Production citric acid can run into many unfavorable factors, at first because the raw material freight charges increase production cost; They are two years old, because southern climates humidity, raw material (especially potato is done) very easily makes moist and goes mouldy, after going mouldy, not only reduced raw material the starch content of itself, and can produce toxin, directly the normal fermentation of bacterial strain is produced in influence, consequently gently then reduces citric acid output, heavy then cause the tank switching accident, cause great financial loss.
The object of the present invention is to provide a kind of is the high citric acid fermentation technology of raw material and acid production rate with rice.The present invention generally is applicable to China's citric acid industry, is particularly useful for the area, the middle and south of China, for the industrial application of locality rice morning has been opened up a new way.For a long time, the early rice Micoud storage of provinces and regions such as China Hunan, Hubei is seriously superfluous, has not only taken a large amount of official reserves grain funds, and also faces sizable purchase pressure every year, is badly in need of finding one can develop the method for rice early.The objective of the invention is to realize: raw materials pretreatment-size mixing-liquefy-filter-prepare substratum-fermentation by following technical process.Wherein: raw materials pretreatment: after raw material rice immersion, rinsing, become ground rice slurry or ground rice by wet method or dry ground.If adopt dry ground, the ground rice after the pulverizing is crossed 60 mesh sieves.Size mixing: pretreated ground rice or ground rice slurry are added water adjustment concentration, its concentration is reached between 10～30%.Liquefaction: with concentration is that the ground rice slurry of 10-30% is delivered to liquefying plant, and its pH value is adjusted to 5.5～7.0.Make the ground rice slurry be warming up to 60 ℃, temperature or high-temperature in adding in the ground rice slurry by 4～20 units of every grammeter powder.Adopt continuous injection liquefaction or intermittently liquefaction process liquefy, liquefaction temperature is controlled between 80～130 ℃, liquefaction DE value 3～95%.Filter: after liquefaction is finished, adopt band filter or sheet frame to filter to liquefier, cleaner liquid is used for fermenting, and filters wet slag and is used to prepare substratum or makes rice protein powder.Preparation substratum: prescription one: form by the liquefier of filtered and the liquefier after the filtration, the dosage of two kinds of compositions is by the percentage allocation of total fermentation volume, wherein the liquefier of filtered accounts for 10～40%, is settled to fermentation volume with the cleaner liquid after filtering again; Prescription two: be made up of liquefier after filtering and filtration wet slag, the dosage that wherein filters wet slag is 0.5～8% of total fermentation volume; Prescription three: the cleaner liquid after will filtering is squeezed into fermentation unit, the additional then organic nitrogen source that accounts for total fermentation volume 0.1～10% or 0.01～2.0% inorganic nitrogen-sourced; After substratum is deployed, start stirring, make its uniform mixing, be warming up to 85～120 ℃ then, 10～30 minutes fast coolings afterwards of sterilizing; Described fermentation procedure comprises: starts stirring behind the medium sterilization, when treating that it cools to 36～38 ℃, adopts the method for spore inoculating or mycelium inoculation to insert aspergillus niger strain, and the oxygen supply that begins to ventilate fermentation, leavening temperature is controlled at 35～38 ℃.Citric acid is extracted by general calcium salt method in the fermented liquid.
The present invention compares with the citric acid production technology that with potato dry powder and Semen Maydis powder is raw material, and the fermentation and acid rate improves 16%, and the fermentation clear liquid yield improves 12% than potato dry powder fermentation method, and therefore not increasing fermentation equipment can increase output, cuts down the consumption of energy.Another advantage of the present invention is, fermented liquid is thin, easily filter and of light color, can save the bleaching process of leaching process.The citric acid producer of China's southern area adopts the present invention, can obtain raw material be easy to get and be convenient to preserve, technology is simple, improve output, fermentation clear liquid yield height, cut down the consumption of energy and cost etc. in many ways and benefit, in addition, with rice is raw material to produce citric acid, can also reduce plant area's dust pollution, obvious effects be arranged improving environment.The present invention can also solve China's south early rice rice to a certain extent and overstock problem, reduces the annual a large amount of stored grain bounty usefulness that need payment of country, has stable agriculture production, benefits the local common people's meaning.
Further specify the present invention below by most preferred embodiment:
Embodiment one: the rice pre-treatment: early rice is soaked, after the rinsing, is ground into the ground rice slurry.It is 20% slurries that ground rice slurry adds water furnishing concentration, delivers to liquefying plant through transport pipe; Liquefaction: with concentration is that the pH value of 20% ground rice slurry is adjusted to 7.0, makes it be warming up to 60 ℃ with steam then, again by every gram rice 10 units adding high-temperature, continue to be warmed up to 95 ℃ after, kept this temperature 30 minutes.Filter: the ground rice liquefier sheet frame pressure filtration that will obtain after will liquefying, the cleaner liquid of gained are filtered wet slag and partly are used for fermentation for fermentation usefulness, and rice protein powder is made in remaining wet slag oven dry; Preparation substratum: cleaner liquid is squeezed into fermentor tank, and add the filtration wet slag that is equivalent to fermentation volume 8%, start stirring the two is mixed, be warmed up to 105 ℃ of sterilizations 30 minutes behind the constant volume, then fast cooling; Fermentation: be cooled fast to 36 ℃ behind the medium sterilization, adopt the mode of mycelium inoculation to insert aspergillus niger strain, at this temperature bottom fermentation 64 hours, acid production rate 14.1%, transformation efficiency 96.4%, the citric acid in the fermented liquid extracts with calcium salt method.
Embodiment two: the rice pre-treatment: early rice is soaked, after the rinsing, is ground into the ground rice slurry.It is 18% slurries that ground rice slurry adds water furnishing concentration, delivers to liquefying plant through transport pipe; Liquefaction: with concentration is that 1 8% ground rice slurry pH value is adjusted to 6.2, makes it be warming up to 60 ℃ with steam then.Add high-temperature by every gram rice 8 units, continue to be warmed up to 95 ℃, kept this temperature 30 minutes; Filter: the ground rice liquefier that will obtain after will liquefying, use sheet frame pressure filtration, the cleaner liquid of gained is used for fermentation.With remaining filtration wet slag oven dry, make rice protein powder; The preparation substratum: in fermentor tank, squeeze into the ground rice liquefier of the filtered of crossing cleaner liquid and 40% that accounts for fermentor tank cubic capacity 60%, start mix after, be warmed up to 100 ℃ of sterilizations 30 minutes; Fermentation: be cooled fast to 37 ℃ behind the medium sterilization, adopt the mycelium inoculation mode to insert aspergillus niger strain, at this temperature bottom fermentation 68 hours, acid production rate 14.5%, transformation efficiency 95.8%, the citric acid in the fermented liquid extracts with calcium salt method.
Embodiment three: the rice pre-treatment: early rice is soaked, after the rinsing, is ground into the ground rice slurry.It is 22% slurries that ground rice slurry adds water furnishing concentration, delivers to liquefying plant through transport pipe; Liquefaction: with concentration is that the pH value of 22% ground rice slurry is adjusted to 6.5, makes it be warming up to 60 ℃ with steam then, again by every gram rice 12 units adding high-temperature, continue to be warmed up to 95 ℃ after, kept this temperature 30 minutes.Filter: the ground rice liquefier sheet frame pressure filtration that will obtain after will liquefying, the cleaner liquid of gained is used for fermentation.With remaining filtration wet slag oven dry, make rice protein powder; Preparation substratum: cleaner liquid is squeezed into fermentor tank, and add the Testa Tritici that is equivalent to fermentation volume 10%, start stirring the two is mixed, be warmed up to 105 ℃ of sterilizations 30 minutes behind the constant volume, then fast cooling; Fermentation: quick cooling to 36 ℃ behind the medium sterilization, adopt the mode of spore inoculating to insert aspergillus niger strain, at this temperature bottom fermentation 65 hours, acid production rate 14%, transformation efficiency 97%, the citric acid in the fermented liquid extracts with calcium salt method.
Embodiment four: the rice pre-treatment: early rice is soaked, after the rinsing, is ground into the ground rice slurry.It is 25% slurries that ground rice slurry adds water furnishing concentration, delivers to liquefying plant through transport pipe; Liquefaction: with concentration is that the pH value of 25% ground rice slurry is adjusted to 6.5, makes it be warming up to 60 ℃ with steam then, again by every gram rice 12 units adding high-temperature, continue to be warmed up to 95 ℃ after, kept this temperature 30 minutes.Filter: the ground rice liquefier that will obtain after will liquefying filters with band filter, and the cleaner liquid of gained is used for fermentation.With remaining filtration wet slag oven dry, make rice protein powder; Preparation substratum: cleaner liquid is squeezed into fermentor tank, and add the ammonium sulfate that is equivalent to fermentation volume 1%, start stirring and make its dissolving, be warmed up to 105 ℃ of sterilizations 30 minutes behind the constant volume, then fast cooling; Fermentation: quick cooling to 36 ℃ behind the medium sterilization, adopt the mode of spore inoculating to insert aspergillus niger strain, at this temperature bottom fermentation 65 hours, acid production rate 13.8%, transformation efficiency 95%, the citric acid in the fermented liquid extracts with calcium salt method.
Claims (1)
1. citric acid production zymotechnique, comprise raw materials pretreatment, size mixing, liquefy, filter, prepare substratum and fermentation procedure, it is characterized in that: described raw materials pretreatment operation comprises: after raw material rice immersion, rinsing, by wet method or dry ground it is ground into ground rice slurry or ground rice, if adopt dry ground, the ground rice after the pulverizing is crossed 60 mesh sieves; The described operation of sizing mixing comprises: pretreated ground rice or ground rice slurry are added water adjustment concentration, its concentration is between 10～30%; Described liquefaction operation comprises: with concentration is that 10～30% ground rice slurry is delivered to liquefying plant, and its pH value is adjusted to 5.5～7.0, make the ground rice slurry be warming up to 60 ℃, temperature or high-temperature in adding in ground rice slurry by 4～20 units of every grammeter powder, adopt continuous injection liquefaction or intermittently liquefaction process liquefy, liquefaction temperature is controlled between 80～130 ℃, liquefaction DE value 3～95%; Described filtration operation comprises: liquefier is filtered with band filter or sheet frame, and cleaner liquid is used for fermenting, and filters wet slag and is used to prepare substratum or makes rice protein powder; Described preparation substratum operation comprises: prescription one: be made up of the liquefier of filtered and the liquefier after the filtration, the dosage of two kinds of compositions is by the percentage allocation of total fermentation volume, wherein the liquefier of filtered accounts for 10～40%, is settled to fermentation volume with the cleaner liquid after filtering again; Prescription two: be made up of cleaner liquid after filtering and filtration wet slag, the dosage that wherein filters wet slag is 0.5～8% of total fermentation volume; Prescription three: the cleaner liquid after will filtering is squeezed into fermentation unit, replenish the organic nitrogen source account for total fermentation volume 0.1～10% or 0.01～2.0% inorganic nitrogen-sourced then, substratum according to above-mentioned prescription one, the prescription two or fill a prescription three deployed after, start stirring, make its uniform mixing, be warming up to 85～120 ℃ then, 10～30 minutes fast coolings afterwards of sterilizing; Described fermentation procedure comprises: starts stirring behind the medium sterilization, when treating that it cools to 36～38 ℃, adopts the method for spore inoculating or mycelium inoculation to insert aspergillus niger strain, and the oxygen supply that begins to ventilate fermentation, leavening temperature is controlled at 35～38 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN99123751A CN1077138C (en) | 1999-11-19 | 1999-11-19 | Fermentation technology using rice as raw material to produce citric acid |
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| CN99123751A CN1077138C (en) | 1999-11-19 | 1999-11-19 | Fermentation technology using rice as raw material to produce citric acid |
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| CN1266102A CN1266102A (en) | 2000-09-13 |
| CN1077138C true CN1077138C (en) | 2002-01-02 |
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| CN99123751A Expired - Fee Related CN1077138C (en) | 1999-11-19 | 1999-11-19 | Fermentation technology using rice as raw material to produce citric acid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250971A (en) * | 2010-12-23 | 2011-11-23 | 日照金禾博源生化有限公司 | Fermentation production method for citric acid |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004026152A1 (en) | 2004-05-28 | 2005-12-15 | Basf Ag | Fermentative production of fine chemicals |
| DE102005056668A1 (en) | 2005-11-28 | 2007-05-31 | Basf Ag | Fermentative preparation of organic compounds, useful for making e.g. amino acids or enzymes, comprises using a starch source from which non-starch solids have not been removed, hydrolyzed and mixed with sugars |
| DE102005056669A1 (en) | 2005-11-28 | 2007-05-31 | Basf Ag | Fermentative preparation of organic compounds, useful for making, e.g. amino acids or enzymes, using a starch source from which non-starch solids have not been removed, hydrolyzed and enzymatically converted to monosaccharides |
| DE102005056667A1 (en) | 2005-11-28 | 2007-05-31 | Basf Ag | Fermentative preparation of organic compounds, useful for making e.g. amino acids or enzymes, comprises using a starch source from which non-starch solids have not been removed, hydrolyzed and gelatinized with steam |
| CN101861796B (en) * | 2010-05-18 | 2012-02-15 | 四川大学 | Method for culturing amanita pantherina by using waste distillage after fermentation of coloured rice |
| CN102373254B (en) * | 2010-08-12 | 2013-09-25 | 中粮生物化学（安徽）股份有限公司 | Enzymolysis method of starchy material and preparation method of citric acid |
| CN102899363B (en) * | 2012-09-14 | 2015-09-02 | 日照鲁信金禾生化有限公司 | A kind of preparation method of citric acid fermentation broth |
| CN105506004A (en) * | 2016-01-05 | 2016-04-20 | 安徽丰原发酵技术工程研究有限公司 | Method for producing citric acid by fermenting konjak powder residues |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072456A (en) * | 1992-08-28 | 1993-05-26 | 宁夏盐池县柠檬酸厂 | Utilize wheat-flour production methods of citric acid |
| CN1112606A (en) * | 1995-04-08 | 1995-11-29 | 安徽省蚌埠柠檬酸厂 | Processing method of citric acid or sodium citrate |
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1999
- 1999-11-19 CN CN99123751A patent/CN1077138C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072456A (en) * | 1992-08-28 | 1993-05-26 | 宁夏盐池县柠檬酸厂 | Utilize wheat-flour production methods of citric acid |
| CN1112606A (en) * | 1995-04-08 | 1995-11-29 | 安徽省蚌埠柠檬酸厂 | Processing method of citric acid or sodium citrate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250971A (en) * | 2010-12-23 | 2011-11-23 | 日照金禾博源生化有限公司 | Fermentation production method for citric acid |
| CN102250971B (en) * | 2010-12-23 | 2013-11-27 | 日照金禾博源生化有限公司 | Fermentation production method for citric acid |
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| CN1266102A (en) | 2000-09-13 |
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Assignee: Tianjin SF-Bio Industrial Bio-tech Co., Ltd. Assignor: Tianjin Inst. of Industrial Microbes Contract fulfillment period: 2007.9.20 to 2012.9.19 contract change Contract record no.: 2009120000159 Denomination of invention: Fermentation technology using rice as raw material to produce citric acid Granted publication date: 20020102 License type: Exclusive license Record date: 2009.7.31 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.9.20 TO 2012.9.19; CHANGE OF CONTRACT Name of requester: TIANJIN SHIFAZHONGKEBAIAO INDUSTRIAL BIOISYSTECH C Effective date: 20090731 |