CN105087716B - A kind of sweet potato waste rapid enzymolysis at monosaccharide method - Google Patents

A kind of sweet potato waste rapid enzymolysis at monosaccharide method Download PDF

Info

Publication number
CN105087716B
CN105087716B CN201410198435.1A CN201410198435A CN105087716B CN 105087716 B CN105087716 B CN 105087716B CN 201410198435 A CN201410198435 A CN 201410198435A CN 105087716 B CN105087716 B CN 105087716B
Authority
CN
China
Prior art keywords
sweet potato
potato waste
starch
waste
cellulose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201410198435.1A
Other languages
Chinese (zh)
Other versions
CN105087716A (en
Inventor
韩业君
彭小伟
贾晓静
米朔甫
乔玮博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Process Engineering of CAS
Original Assignee
Institute of Process Engineering of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Process Engineering of CAS filed Critical Institute of Process Engineering of CAS
Priority to CN201410198435.1A priority Critical patent/CN105087716B/en
Publication of CN105087716A publication Critical patent/CN105087716A/en
Application granted granted Critical
Publication of CN105087716B publication Critical patent/CN105087716B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Enzymes And Modification Thereof (AREA)

Abstract

Sweet potato waste is that sweet potato powder factory extracts the residue after starch from sweet potato, accounts for about the 45%-60% of fresh weight.The main component of sweet potato waste is starch, cellulose and a small amount of protein.Starch-containing 36-58% in dry sweet potato waste, cellulose 20-30% can produce the glucose for accounting for dry weight 80% or so if it is digested completely, be the good sources of carbon of the fermenting and producing of large fermented product such as ethyl alcohol, butanol etc..Sweet potato waste is most of not utilized in addition to small part is used to produce dietary fiber, feed and solid fuel at present, or even becomes pollution sources.The present invention provides a kind of method using high temperature enzyme rapid enzymolysis sweet potato waste, by hot fermentation generate crude enzyme liquid and sweet potato waste be mixed in a certain proportion after 60-80 DEG C enzymatic hydrolysis 10-20 hours, starch and cellulase hydrolysis rate in sweet potato waste reach 90%-100%.

Description

A kind of sweet potato waste rapid enzymolysis at monosaccharide method
Technical field
The invention belongs to field of biotechnology, in particular to a kind of sweet potato waste rapid enzymolysis at monosaccharide method.
Background technique
Sweet potato is also known as sweet potato, sweet potato, red tongue fur, sweet potato, pachyrhizus, cultivates extensively in global tropical, subtropical zone Area.Sweet potato is annual herb plant, and under ground portion is round, ellipse or fusiform root tuber, the shape of root tuber, color of the leather and Yellowish pink is different because of kind or soil difference.Sweet potato is important one of the cereal crops in China, is almost all distributed throughout the country, Major production areas is the ground such as Hunan, Hubei, Jiangxi, Anhui and Shandong.According to statistics, China sweet potato total output accounts for the world up to 100,000,000 tons 80% or so of sweet potato total output.Sweet potato waste be sweet potato powder factory production sweet potato powder after and starch from sweet potato factory extract starch from sweet potato after Residue accounts for about the 45%-60% of fresh weight.The main component of sweet potato waste is starch, cellulose and a small amount of protein.Wherein starch and The content of cellulose accounts for the 36-58% and 20-30% of sweet potato waste dry weight respectively, is degraded into the monosaccharide based on glucose, It is the very good material of fermentation industry.Monosaccharide is degraded into applied to fermentation industry using sweet potato waste, can be relieved fermentation industry to grain Dependence, while be expected reduce production cost, promote fermentation industry sustainable health development.
However sweet potato waste is not fully used at present, except small part is for producing dietary fiber, feed and solid It is most of to become pollutant outside fuel.To find out its cause, mainly without economic, quick biodegrading process.Chemically divide in structure Analysis, although starch and cellulose are all to have glucose polymerisation to form, they are two different high polymers.Starch is by α glucosides Key link, and cellulose is formed by β-Isosorbide-5-Nitrae glycosidic bond links, is formed simultaneously crystalline texture.Therefore, they digest the enzyme being related to Type and enzymatic hydrolysis condition are all different, and amylorrhexis is mainly completed by amylase and carbohydrase, and the enzymatic hydrolysis of cellulose is by fiber Plain enzyme is completed.The enzymatic hydrolysis condition difference of current commercialized amylase and cellulase is very big, is difficult that starch and cellulose is same When degrade.
Thermophilic Bacterium is a kind of microorganism that can be grown at relatively high temperatures, the active high, heat of generated enzyme The advantages that stability is good has important application value in industrial biotechnology field.Wherein it is pyrolyzed cellulose Pseudomonas It (Caldicellulosiruptor) is the most heat-resisting a kind of biomass economy anaerobic bacteria found so far, so far, pyrolysis is fine Tieing up plain Pseudomonas has had 8 kinds of (C.saccharolyticus, C.bescii, C.obsidiansis C.hydrothermalis, C.kristjanssonii, C.kronotskyensis, C.lactoaceticus, and C.owensensis it) is successively found, can be utilized under high temperature (70-78 DEG C) on Europe, North America, Asia and Australia and other places The high temperature enzyme of the growth such as starch, cellulose, pectin, xylan, secretion has considerable prospects for commercial application.This hair It is bright using sweet potato waste as inducer, individually using pyrolysis CELLULOLYTIC BACTERIUM Caldicellulosiruptor belong to bacterial strain, such as Caldicellulosiruptor owensensis (DSM13100), Caldicellulosiruptor kronotskyensis (DSM19802), Caldicellulosiruptor lactoaceticus (DSM9545) etc. is (purchased from German microbial preservation Heart DSMZ) fermentation, the crude enzyme liquid for existing simultaneously amylase and cellulase is obtained, crude enzyme liquid is directly used in the quick enzyme of sweet potato waste Solution.Due in crude enzyme liquid amylase and cellulase be by same plant height temperature bacterium generate, enzymatic hydrolysis condition is very close, Preferable hydrolysis result can be reached under mutually synthermal and pH condition, it can be quickly by starch and cellulose degradation at monosaccharide.It can To find out that the present invention is easily operated, there is huge industrial application value.
Summary of the invention
[purpose of the present invention]
It is digested the purpose of the present invention is sweet potato waste is efficient, economical, quickly generates fermentable sugars, provided for fermentation industry honest and clean Valence raw material, realizes the higher value application of sweet potato waste, while reducing the environmental pollution of sweet potato powder production process.
[technical solution]
For sweet potato waste rapid enzymolysis provided by the invention at the method for monosaccharide, technical solution is as follows:
1) preparation of crude enzyme liquid: pyrolysis CELLULOLYTIC BACTERIUM grows 12-16h at 70-80 DEG C in seed culture medium, obtains seed Seed liquor is inoculated into according to 0.4%-1% containing using sweet potato waste as the fermentation medium of inducer, in 60-80 DEG C of liquid by liquid Fermentation liquid is centrifuged 5-8 minutes under the conditions of 4000-5000 revs/min after fermentation, obtains supernatant by anaerobic fermentation 10-16h Liquid is crude enzyme liquid;
2) enzymatic hydrolysis of sweet potato waste: obtained crude enzyme liquid is mixed according to the amount of every gram of dry sweet potato slag of 0.1-1ml with sweet potato waste, Water supplement be prepared into solid content be 10-20% mixture, 10-20h is digested at 60-80 DEG C, the starch in sweet potato waste and The enzymatic hydrolyzation of cellulose reaches 90%-100%.
[technical characterstic]
The present invention has the characteristics that amylase and cellulase abundant using pyrolysis CELLULOLYTIC BACTERIUM, by being lured with sweet potato waste Amylase and cellulase that fermentation generates high activity are led, and they can play a role under identical enzymatic hydrolysis condition, with fermentation Obtained crude enzyme liquid just by the starch and cellulose in sweet potato waste while can degrade, and requirement of the present invention to process equipment be not severe It carves, is easy to industrial applications.
Specific embodiment
Embodiment 1
Strain Caldicellulosiruptor owensensis (DSM13100) is in seed culture medium (1.3g (NH4)2SO4,1.5gKH2PO4,2.9g K2HPO4·3H2O,0.2g MgCl2·6H2O,0.075g CaCl2·2H2O,1.250mg FeSO4·7H2O, 2g yeast powder, 0.5g Cysteine-HClH2O, 6g glucose add water constant volume to 1L, by pH tune before sterilizing To 75 DEG C of culture 12h in 7.2), fermentation medium (NH4Cl0.90g, NaCl0.90g, MgCl are inoculated into according to 1% amount2· 6H2O0.40g, KH2PO40.75g, K2HPO41.50g, Trypticase2.00g, yeast powder 1.00g, FeCl3· 6H2O2.50mg, sweet potato waste 1.00g, Cysteine-HCl x H27.2) pH is transferred to before sterilizing by O0.75g with water constant volume at 1L In, 70 DEG C of culture 15h are centrifugated thallus, supernatant are taken to mix according to the amount of every gram of dry sweet potato slag of 0.3ml with sweet potato waste, mend Add water to be prepared into the mixture that solid content is 10%, 10h is digested at 80 DEG C, the enzymatic hydrolysis of starch and cellulose in sweet potato waste Rate respectively reaches 98% and 95%.
Embodiment 2
Strain Caldicellulosiruptor kronotskyensis (DSM19802) is in seed culture medium (1.3g (NH4)2SO4,1.5gKH2PO4,2.9g K2HPO4·3H2O,0.2g MgCl2·6H2O,0.075g CaCl2·2H2O, 1.250mg FeSO4·7H2O, 2g yeast powder, 0.5g Cysteine-HClH2O, 6g glucose add water constant volume to 1L, sterilizing It is preceding that pH is transferred in 7.2), 73 DEG C of culture 15h, according to 0.5% amount be inoculated into fermentation medium (NH4Cl0.90g, NaCl0.90g, MgCl2·6H2O0.40g, KH2PO40.75g, K2HPO41.50g, Trypticase2.00g, yeast powder 1.00g, FeCl3·6H2O2.50mg, sweet potato waste 1.00g, Cysteine-HCl x H2O0.75g, with water constant volume at 1L, by pH before sterilizing It is transferred in 7.2), 75 DEG C of culture 15h, is centrifugated thallus, takes supernatant according to the amount and sweet potato waste of every gram of dry sweet potato slag of 0.5ml Mixing, water supplement are prepared into the mixture that solid content is 20%, 16h are digested at 70 DEG C, starch and fiber in sweet potato waste The enzymatic hydrolyzation of element respectively reaches 99% and 96%.
Embodiment 3
Strain Caldicellulosiruptor lactoaceticus (DSM9545) is in seed culture medium (1.3g (NH4)2SO4,1.5gKH2PO4,2.9g K2HPO4·3H2O,0.2g MgCl2·6H2O,0.075g CaCl2·2H2O, 1.250mg FeSO4·7H2O, 2g yeast powder, 0.5g Cysteine-HClH2O, 6g glucose add water constant volume to 1L, sterilizing It is preceding that pH is transferred in 7.2), 77 DEG C of culture 12h, according to 0.8% amount be inoculated into fermentation medium (NH4Cl0.90g, NaCl0.90g, MgCl2·6H2O0.40g, KH2PO40.75g, K2HPO41.50g, Trypticase2.00g, yeast powder 1.00g, FeCl3·6H2O2.50mg, sweet potato waste 1.00g, Cysteine-HCl x H2O0.75g, with water constant volume at 1L, by pH before sterilizing It is transferred in 7.2), 78 DEG C of culture 15h, is centrifugated thallus, take supernatant mixed according to the amount and sweet potato waste of every gram of dry sweet potato slag of 1ml It closes, water supplement is prepared into the mixture that solid content is 15%, 14h is digested at 75 DEG C, starch and cellulose in sweet potato waste Enzymatic hydrolyzation respectively reach 100% and 90%.

Claims (1)

1. a kind of sweet potato waste rapid enzymolysis includes the following steps: at the method for monosaccharide
(1) high temperature bacterium is using sweet potato waste as inducer, and in 70-75 DEG C of liquid anaerobic fermentation 10-16h, the high temperature bacterium bag is included Caldicellulosiruptor.owensensis (DSM 13100) and Caldicellulosiruptor kronotskyensis(DSM 19802),Caldicellulosiruptor lactoaceticus(DSM 9545);
(2) it is centrifugated thallus after fermenting, obtains crude enzyme liquid;
(3) crude enzyme liquid that step (2) obtains is mixed according to the amount of every gram of dry sweet potato slag of 0.1-1ml with sweet potato waste, water supplement preparation The mixture for being 10-20% at solid content, digests 10-20h, the enzyme of starch and cellulose in sweet potato waste at 60-80 DEG C Solution rate reaches 90%-100%.
CN201410198435.1A 2014-05-12 2014-05-12 A kind of sweet potato waste rapid enzymolysis at monosaccharide method Expired - Fee Related CN105087716B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410198435.1A CN105087716B (en) 2014-05-12 2014-05-12 A kind of sweet potato waste rapid enzymolysis at monosaccharide method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410198435.1A CN105087716B (en) 2014-05-12 2014-05-12 A kind of sweet potato waste rapid enzymolysis at monosaccharide method

Publications (2)

Publication Number Publication Date
CN105087716A CN105087716A (en) 2015-11-25
CN105087716B true CN105087716B (en) 2019-07-12

Family

ID=54569045

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410198435.1A Expired - Fee Related CN105087716B (en) 2014-05-12 2014-05-12 A kind of sweet potato waste rapid enzymolysis at monosaccharide method

Country Status (1)

Country Link
CN (1) CN105087716B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101851650A (en) * 2010-04-19 2010-10-06 中国科学院青岛生物能源与过程研究所 Method for saccharifying cellulose raw material
CN102286600A (en) * 2011-08-08 2011-12-21 华南理工大学 Method for simultaneously producing ethanol and hydrogen by using cassava residue through fermentation
CN102559811A (en) * 2012-03-15 2012-07-11 吴允山 Method of preparing sugar by utilizing sweet potato residues
CN102618602A (en) * 2012-03-30 2012-08-01 吴允山 Process for preparing sugar by performing enzymatic hydrolysis on sweet potato residues

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101851650A (en) * 2010-04-19 2010-10-06 中国科学院青岛生物能源与过程研究所 Method for saccharifying cellulose raw material
CN102286600A (en) * 2011-08-08 2011-12-21 华南理工大学 Method for simultaneously producing ethanol and hydrogen by using cassava residue through fermentation
CN102559811A (en) * 2012-03-15 2012-07-11 吴允山 Method of preparing sugar by utilizing sweet potato residues
CN102618602A (en) * 2012-03-30 2012-08-01 吴允山 Process for preparing sugar by performing enzymatic hydrolysis on sweet potato residues

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《Complete Genome Sequences for the Anaerobic, Extremely Thermophilic》;Sara E.等;《JOURNAL OF BACTERIOLOGY》;20110107;第193卷(第6期);全文 *
《极端嗜热厌氧菌Caldicellulosiruptor木质纤维素降解研究》;孟冬冬等;《生物加工过程》;20040131;第12卷(第1期);第38页2.1节第一段;参见第41页第一段以及表1 *

Also Published As

Publication number Publication date
CN105087716A (en) 2015-11-25

Similar Documents

Publication Publication Date Title
CN102206102B (en) Production method for fulvic acid with rice straws
CN104177137A (en) Microbial straw rotting agent and preparation method thereof
CN103898032A (en) Complex microbial inoculant and method for preparing organic fertilizer by using same
CN106173193A (en) A kind of method of solid fermentation bean cake
CN101589151A (en) Method for production of ethanol or lactic acid
CN104312947A (en) Multi-strain efficient straw-decomposing inoculant and preparation method and application thereof
CN101265485A (en) Method for producing ethanol by synchronously saccharifying and fermenting Jerusalem artichoke raw material
CN103734482A (en) Production method of feed additive 'Acremonium terricola culture'
CN103834604B (en) Multi-strain microorganism leavening agent and preparation method thereof
CN102488087A (en) Biological detoxification method for camellia seed cakes
CN108795812A (en) A kind of compost decomposing agent and the preparation method and application thereof
CN103865815B (en) Method for preparing biological humic acid bacteria agent from biological organic enzymolysis-coupled conversion antibiotic dregs
CN104509688A (en) Method of producing biological feed by fermenting banana stem and leaf through micro-organism
US20210403966A1 (en) Method for preparing crude polysaccharide based on synergistic fermentation of corn stover and fungus
CN106974268A (en) A kind of preparation method of black fruit fructus lycii ferment
CN110734322A (en) Method for assisting fermentation of crop straws by alginate
CN106755179B (en) A kind of culture medium suitable for bacteria cellulose fermentation
CN103719537A (en) Nonreactive biological fermented feed and preparation method thereof
CN112029681B (en) Preparation of special liquid composite microbial inoculum for decomposing vinasse
CN112401054A (en) Continuous treatment method for lignocellulose raw material
CN105779328A (en) Method for culturing clostridium thermocellum
Afifi Effective technological pectinase and cellulase by Saccharomyces cervisiae utilizing food wastes for citric acid production
CN101619328B (en) Method for fermenting and producing 2,3-butanediol by utilizing tuber and stem leaf of jerusalem artichoke as raw materials
CN105087716B (en) A kind of sweet potato waste rapid enzymolysis at monosaccharide method
Ravinder et al. Fermentative production of acetic acid from various pure and natural cellulosic materials by Clostridium lentocellum SG6

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190712