CN104886606A - Acid hydrolysis production technology for preparing cellulose food materials from straw - Google Patents
Acid hydrolysis production technology for preparing cellulose food materials from straw Download PDFInfo
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- CN104886606A CN104886606A CN201510338510.4A CN201510338510A CN104886606A CN 104886606 A CN104886606 A CN 104886606A CN 201510338510 A CN201510338510 A CN 201510338510A CN 104886606 A CN104886606 A CN 104886606A
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Abstract
The invention discloses an acid hydrolysis production technology for preparing cellulose food materials from straw, and solves the problem of narrow application range of crop straw in the prior art. The technology comprises steps as follows: (1), straw is ground into powdery particles with the size ranging from 0.005 mm to 0.2 mm; (2), the powdery particles are added to a reaction container, an acid solution is added until the powdery particles are immersed exactly, the acid solution contains citric acid and hydrochloric acid, the concentration of the citric acid is 10%, and the concentration of the hydrochloric acid is 3%; (3), after the powdery particles are subjected to acid hydrolysis in the acid solution, vinyl monomers are grafted to cellulose obtained after hydrolysis through a redox system, and modified cellulose is obtained. The acid hydrolysis production technology for preparing the cellulose food materials from the straw has the advantages that the operation is simple, the cost is low, a finished product is edible and tastes good and the like.
Description
Technical field
The present invention relates to a kind of acid hydrolysis preparation method of cellulose food materials, what be specifically related to is utilize straw for the acid hydrolysis production technology of cellulose food materials.
Background technology
According to the definition of " GBZ 21922-2008 food nutrient composition basic terms ", dietary fiber refer to naturally occurring in plant, extract or the polymer of carbohydrate of synthesis, its degree of polymerization DP >=3, can not be digested and assimilated by human small intestine, material to human body unsoundness meaning.Comprise cellulose, hemicellulose, pectin, inulin and some other dietary fiber monomer component etc.
Fiber plays important role in maintenance digestive system health, and absorb enough fibers also can angiocardiopathy preventing, cancer, diabetes and Other diseases simultaneously.Fiber can clean wall of digestive and strengthen digestive function, and fiber simultaneously can dilute and add removing of carcinogen in food and noxious material, the alimentary canal that protection is fragile and preventing colon cancer.Fiber can slow down digestion rate and most rapid drainage cholesterol, so the blood sugar in blood and cholesterol can be allowed to control in optimal level.
Cellulose is the abundantest on the earth, reproducible natural resources, is present in a large amount of abundant green plants, is the inexhaustible resource of nature.There is inexpensive, degradable, the features such as pollution are not produced to environment.And solving the energy that the mankind face, significant in resources and environment problem.
In modern food industry, corresponding food fiber product is produced through series processing with the stalk being rich in dietary fiber, both directly oral diet therapy type fibre can have been developed, can be used as food additives again, such as add among the bakery products such as fermented food, bread such as Yoghourt as quality improver and dietary fiber hardening agent.
Stalk is the general name of ripe crops cauline leaf (fringe) part.Be often referred to wheat, paddy rice, corn, potato class, rape, cotton, sugarcane and other crops (the being generally coarse food grain) remainder after results seed.The photosynthetic product of crops has and is over halfly present in stalk, and stalk is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter etc., and be that one has multiduty reproducible living resources, stalk is also a kind of roughage.Feature is crude fiber content high (30%-40%), and containing lignin etc.
The utilization of Chinese farmers to crop material has excellent history of a specified duration, just because the past level of agricultural production is low, yield poorly, stalk quantity is few, stalk removes a small amount of for packing ring, pasture, outside part is made compost for heap, major part has all been burnt as fuel, and the gas generated after straw burning has air and greatly endangers.Along with the development of agricultural production, China is since the eighties in 20th century, and grain yield significantly improves, and stalk quantity is also many, and thus atmospheric environment also receives great impact.
Summary of the invention
The object of the invention is to solve the problem that crop material range of application is narrow in prior art, provide a kind of edible and the acid hydrolysis production technology of the good stalk cellulose food materials of mouthfeel.
For solving above-mentioned shortcoming, technical scheme of the present invention is as follows:
Utilize straw for the acid hydrolysis production technology of cellulose food materials, comprise the following steps:
(1) by stalk pulverize particle, granular size is 0.2mm-0.005mm;
(2) powdered granule is joined in reaction vessel, then adds acid solution until just flood powdered granule, comprise in this acid solution concentration be 10% citric acid and concentration be the hydrochloric acid of 3%;
(3) powdered granule is in an acidic solution after acid hydrolysis, then obtains modified cellulose by redox system by the cellulose obtained after vinyl monomer-grafted to hydrolysis.
Because of the cellulose in the present invention through modified purposes be food materials, thus stalk particle is worn into the powdery of particle diameter between 0.2mm-0.005mm in the present invention, then cellulosic viscosity is improved by acid hydrolysis and modification, and effectively improve the coarse mouthfeel of cellulose itself, the demand in the sense of taste can be met.The equal edible of material in the inventive method in whole course of reaction, and then effectively ensure that the edible safety of finished product.
Finished product in the present invention can replace starch food materials, as flour, glutinous rice flour, sweet potato powder, mealy potato etc., effectively increases food sources, reduces the environmental pollution that straw burning brings.The finished product food materials made by the present invention effectively meet three high crowds and obese people eats as main material.
What answer the present invention to adopt is that reaction condition etc. all easily realizes, and then effectively cost-saving, improves the feasibility of operation.
Further, described acid-hydrolyzed temperature 40-60 DEG C, the time is 30-60min.
Preferred as one, the size of described powdered granule is 0.05-0.1 mm.Because raw material is stalk in the present invention, by powdered granule size is preferably 0.05-0.1 mm, not only can reach optimum mouthfeel, under this particle diameter, effectively can also ensure that the finished product viscosity made is the highest, modification performance is the most excellent.
In order to increase the security performance of modified food, the oxidant in described oxidation-reduction method is hydrogen peroxide.
Further, the temperature of described graft reaction is 50 DEG C, reaction time 130-150min.
The present invention compared with prior art, has the following advantages and beneficial effect:
1, the equal edible of material in whole course of reaction of the present invention, and then effectively ensure that the edible safety of finished product;
2, stalk particle is worn into the powdery of particle diameter between 0.2mm-0.005mm in the present invention, then improve cellulosic viscosity by acid hydrolysis and modification, and effectively improve the coarse mouthfeel of cellulose itself, the demand in the sense of taste can be met;
3, the present invention is simple to operate, and input cost is low, Be very effective.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
Utilize straw for the acid hydrolysis production technology of cellulose food materials, comprise the following steps:
(1) by stalk pulverize particle, granular size is 0.2mm-0.005mm; In the present embodiment, the size of this powdered granule is preferably 0.05-0.1mm.
(2) powdered granule is joined in reaction vessel, then adds acid solution until just flood powdered granule, comprise in this acid solution concentration be 10% citric acid and concentration be the hydrochloric acid of 3%; Acid-hydrolyzed temperature 40-60 DEG C in this step, the time is 30-60min, acid-hydrolyzed temperature 45 C in the present embodiment, and the time is 50min.
(3) powdered granule is in an acidic solution after acid hydrolysis, then obtains modified cellulose by redox system by the cellulose obtained after vinyl monomer-grafted to hydrolysis; Oxidant in the present embodiment in oxidation-reduction method is hydrogen peroxide, and the temperature of graft reaction is 50 DEG C, reaction time 140min.
After testing, the material viscosity of this modified generation is 478mpa s, meets food sanitation standard.
Embodiment 2
The difference of the present embodiment and embodiment 1 is only, the technological parameter between each step is different, specifically arranges as follows:
Acid-hydrolyzed temperature 60 C in the present embodiment, the time is 30min; The temperature of graft reaction is 50 DEG C, reaction time 160min.
After testing, the material viscosity of this modified generation is 437mpa s, meets food sanitation standard.
Embodiment 3
The difference of the present embodiment and embodiment 1 is, the technological parameter between each step is different, specifically arranges as follows:
Acid-hydrolyzed temperature 50 C in the present embodiment, the time is 40min; The temperature of graft reaction is 50 DEG C, reaction time 150min.
After testing, the material viscosity of this modified generation is 528mpa s, meets food sanitation standard.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as adopt design principle of the present invention, and the change carried out non-creativeness work on this basis and make, all should belong within protection scope of the present invention.
Claims (5)
1. utilize straw for the acid hydrolysis production technology of cellulose food materials, it is characterized in that, comprise the following steps:
(1) by stalk pulverize particle, granular size is 0.2mm-0.005mm;
(2) powdered granule is joined in reaction vessel, then adds acid solution until just flood powdered granule, comprise in this acid solution concentration be 10% citric acid and concentration be the hydrochloric acid of 3%;
(3) powdered granule is in an acidic solution after acid hydrolysis, then obtains modified cellulose by redox system by the cellulose obtained after vinyl monomer-grafted to hydrolysis.
2. the straw that utilizes according to claim 1 is for the acid hydrolysis production technology of cellulose food materials, and it is characterized in that, described acid-hydrolyzed temperature 40-60 DEG C, the time is 30-60min.
3. the straw that utilizes according to claim 1 is for the acid hydrolysis production technology of cellulose food materials, it is characterized in that, the size of described powdered granule is 0.05-0.1 mm.
4. the straw that utilizes according to claim 1 is for the acid hydrolysis production technology of cellulose food materials, it is characterized in that: the oxidant in described oxidation-reduction method is hydrogen peroxide.
5. the straw that utilizes according to claim 4 is for the acid hydrolysis production technology of cellulose food materials, it is characterized in that: the temperature of described graft reaction is 50 DEG C, reaction time 130-150min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510338510.4A CN104886606A (en) | 2015-06-18 | 2015-06-18 | Acid hydrolysis production technology for preparing cellulose food materials from straw |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510338510.4A CN104886606A (en) | 2015-06-18 | 2015-06-18 | Acid hydrolysis production technology for preparing cellulose food materials from straw |
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| CN201510338510.4A Pending CN104886606A (en) | 2015-06-18 | 2015-06-18 | Acid hydrolysis production technology for preparing cellulose food materials from straw |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669065A (en) * | 2013-12-15 | 2014-03-26 | 兰州大学 | Method for preparing plant fiber from wheat straw |
| CN104532644A (en) * | 2014-12-15 | 2015-04-22 | 江南大学 | Method for extracting high-content cellulose from straws |
| CN104594091A (en) * | 2015-01-15 | 2015-05-06 | 苏州罗马冯环保科技有限公司 | Extraction method of wheat straw cellulose |
-
2015
- 2015-06-18 CN CN201510338510.4A patent/CN104886606A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669065A (en) * | 2013-12-15 | 2014-03-26 | 兰州大学 | Method for preparing plant fiber from wheat straw |
| CN104532644A (en) * | 2014-12-15 | 2015-04-22 | 江南大学 | Method for extracting high-content cellulose from straws |
| CN104594091A (en) * | 2015-01-15 | 2015-05-06 | 苏州罗马冯环保科技有限公司 | Extraction method of wheat straw cellulose |
Non-Patent Citations (1)
| Title |
|---|
| 孙晓锋等: "秸秆纤维素的一步快速提取和水解", 《高等学校化学学报》 * |
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Application publication date: 20150909 |
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