CN105995687B - A kind of full powder, preparation method thereof of gingko reducing ginkgol and ginkgo acid content - Google Patents
A kind of full powder, preparation method thereof of gingko reducing ginkgol and ginkgo acid content Download PDFInfo
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- CN105995687B CN105995687B CN201610324254.8A CN201610324254A CN105995687B CN 105995687 B CN105995687 B CN 105995687B CN 201610324254 A CN201610324254 A CN 201610324254A CN 105995687 B CN105995687 B CN 105995687B
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Abstract
The invention discloses a kind of full powder, preparation method thereofs of gingko for reducing ginkgol and ginkgo acid content, are related to the production method technical field of gingko deep processing.Its processing step are as follows: the ginkgo shelling picked out is rinsed, drained, and gingko benevolence crushes slurrying, and alkali is added to size mixing standing, and infra-red drying finally obtains the full powder of gingko.Have the characteristics that ginkgoic acid and ginkgo phenol content are low by the full powder of gingko prepared by the present invention, wherein the directly prepared full powder of gingko of drying reduces 86~83.6% and 60.5~38.7% respectively compared with 60 DEG C for ginkgol, ginkgo acid content；Products obtained therefrom rehydration is preferable, and flavor and taste are closer to fresh gingko.
Description
Technical field
The present invention relates to the production method technical field of gingko deep processing, the preparation method of specially a kind of full powder of gingko,
The full powder of gingko being dried to obtain by this method have ginkgol and ginkgo acid content are low, product rehydration is good, flavor and taste more
The features such as close to fresh gingko.
Background technique
Ginkgoic acid, ginkgol and bilobol are the alkylphenol compounds in ginkgo, are present in the leaf of ginkgo, fruit and outer
In kind skin, using content in exosper as highest, content is minimum in gingko benevolence.This kind of alkylphenol compounds are considered as in ginkgo
Main sensitizer, skin allergy can be caused, there are the toxic side effects such as cytotoxicity.Therefore ginkgo leaf is required to extract in the world
The content of this kind of alkyl compound of phenolic acid will be controlled in 5ppm or less in object (EGb761).These three alkylphenol compounds are white
Using ginkgoic acid as highest, about 200ppm, ginkgol takes second place content in kernel, about its 1/10th, bilobol content
It is lower, therefore the content of alkylphenol compounds is controlled, predominantly control the content of ginkgoic acid and ginkgol.
The patent for reducing Ginkgolic Acids in Fruits of Ginkgo biloba content existing at present is special just like the invention of Publication No. CN105341628A
Benefit " a method of reduce Ginkgolic Acids in Fruits of Ginkgo biloba content ", it proposes and " heat treatment and/alcohol immersion treatment is carried out to gingko, to reach
To the purpose for reducing its ginkgo acid content ", it is therein that " heat treatment can directly heat, Hot-blast Heating, roller heat, microwave adds
The combination of one or more of heat, infrared heating ".Boiling described in the patent or alcohol impregnate be actually with hot water or
Ginkgoic acid in alcohol extracting gingko is extracted other liposoluble constituents in the also gingko of removing together therewith.Therefore, through heat
The gingko powder that re-dry obtains after water or ethyl alcohol extraction process can not be known as the full powder of gingko.And the direct microwave of decladding gingko is done
Infrared radiation is dry after dry or gingko benevolence defibrination, then the limitation of ginkgo acid degradation.And it only considered reduction silver in the patent
The content of apricot acid, the ginkgol not being related in gingko.
It is not required in the present invention by extraction step or high temperature baking step, using at alkaline cleaning gingko slurry and general temperature
The method preparation full powder of gingko that (60~80 DEG C) infra-red drying combines, obtained gingko Quan Fenzhong ginkgol and ginkgoic acid contain
Amount all significantly reduces, and improves the edible safety of the full powder of gingko.
Summary of the invention:
It is an object of the invention in view of the deficienciess of the prior art, proposing a kind of drying means of full powder of gingko, both
The content of gingko Quan Fenzhong ginkgol and ginkgoic acid can be reduced, reinforces edible safety, ensures that its flavor and taste, is had
There is significant economic and social benefit.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of full powder, preparation method thereof of gingko that can reduce ginkgol and ginkgo acid content carries out as steps described below: (1) selecting
Material: strictly select it is fresh, without rot, the gingko of free from insect pests is raw material；
(2) decladding: hard shell and fur clothing outside removal gingko；
(3) clean: the gingko for removing shell is cleaned in the sink；
(4) drain: the fresh gingko cleaned, which is divided, drains droplet on bamboo is sieved；
(5) crush slurrying: the gingko drained, which is placed in disintegrating machine, is crushed pulp, and the strainer of 40 mesh is filtered；
(6) measurement of initial aqueous rate: the initial aqueous rate of sampling measurement fresh white pulp；
(7) alkaline cleaning: being added suitable alkali in fresh white pulp, stands 2~12h；
(8) measurement of moisture content: the time is at interval of 5min test sample moisture content in drying process；
(9) gingko for adding alkali stewing process to cross slurry infra-red drying: is subjected to infra-red drying under different temperatures；
(10) the gingko powder of dried cake is broken, obtains the full powder finished product of gingko.
Cleaning described in step (3) is to be placed in gingko in sink to wash away detritus and part fur clothing with circulating water.
Draining described in step (4) is to divide gingko in draining to surface on bamboo sieve without droplet, Draining time 1h~
1.5h。
Crushing slurrying described in step (5) is to crush pulp using disintegrating machine, is filtered through 40 mesh filter screens.
Determination of moisture described in step (8) be using fast tester for water content carry out, initial aqueous rate be 53 ±
2%.
Alkaline cleaning condition described in step (7) are as follows: alkali is soda Na2CO3, it is 0.1% that caustic dosage, which accounts for gingko total weight,
~0.2%, the alkaline cleaning time is respectively 2~12h.
Infra-red drying condition described in step (9) are as follows: gingko slurry quality is 40g, infrared temperature is 60 DEG C~80 DEG C, red
Outer drying time is 40~80min.
Remarkable advantage of the invention is:
The full powder of gingko, this infra-red drying method required temperature are prepared with the method for adding alkali to combine using infra-red drying technology
Not high (60 DEG C~80 DEG C), adding alkali is soda (Na2CO3) be allow in food using alkali, the stewing process after adding alkali do not need
Additional equipment is added, operation equipment is simple, price is low, easily controllable, additionally it is possible to reduce gingko Quan Fenzhong ginkgol and ginkgo
Acid content reinforces edible safety, environment friendly and pollution-free, therefore has significant economic and social benefit.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention
Specific embodiment
It is several specific embodiments of the invention below, further illustrates the present invention, but the present invention is not limited only to this.
The measurement of experimental example 1 ginkgol and ginkgoic acid acid content
The preparation of sample: accurately weighing the full powder 15.0g of gingko, and petroleum ether 230mL is added in 85 DEG C of Soxhlet extractors
12h is extracted, extracting solution is concentrated to dryness to obtain yellow medicinal extract.It is splined on silica gel column chromatography with a small amount of petroleum ether dissolution medicinal extract
Isolate and purify, eluent is chloroform: ethyl acetate: formic acid=95:5:2 (V/V/V) collects ginkgol respectively and ginkgoic acid evaporates
Point, after volatilizing, methanol constant volume obtains sample solution in 5ml volumetric flask.With 0.22 μm of syringe needle mistake before HPLC quantitative analysis
Filter filtered sample solution, it is spare.
HPLC-UV-FLD testing conditions are as follows: chromatographic column: Cosmosil 5C18-MS- II (4.61ID × 250mm)；Methanol-
1% aqueous acetic acid (92:8, v/v) is mobile phase；Flow velocity 1mL/min；Ultraviolet detection wavelength 310nm, fluorescence exciting wavelength
275nm, launch wavelength 600nm；Column temperature: 40 DEG C；Sample volume: 20 μ L.
Experimental result: ginkgoic acid standard curve: y=-85.322+2632.34x, R2=0.9995,
The range of linearity: 0.0552~0.8832mg/mL；
Ginkgol standard curve: y=-19.695+15380.55x, R2=0.9991,
The range of linearity: 0.00576~0.1728mg/mL.
2 heated-air drying of comparative example prepares the full powder of gingko
Preparation method: it will be divided after the ginkgo shelling selected, cleaning and drain 1h on bamboo is sieved；The gingko drained smashes and is slurried
Shape is filtered through 40 mesh filter screens；The initial aqueous rate for measuring fresh white pulp is 53 ± 2%；It weighs 40g gingko slurry and is laid in pallet
In, it is sent into insulating box, temperature is 60 DEG C, at interval of 15 minutes weighing quality in drying course, until gingko slurry quality does not occur
Until variation；It is broken, obtain the full powder of gingko.
Experimental result: gingko is in pico- white after the drying, and distributes fragrance.Gingko after drying starches moisture content
1.5%.The full powder of gingko samples 15.0g, according to 1 method of embodiment, the silver after HPLC-UV-FLD detects to obtain fresh gingko drying
The content of apricot acid is 3.75 × 10-5Mg/mg, the content of ginkgol are 4.13 × 10-6mg/mg。
3 infra-red drying of embodiment prepares the full powder of gingko
Preparation method: the ginkgo shelling that will be selected rinses in sink, and peace and quiet gingko is divided in draining 1.5h on bamboo sieve；
The gingko drained crushes pulp, the filtering of 40 mesh filter screens；The initial aqueous rate for measuring fresh white pulp is 53 ± 2%；Take 40g white
Pulp, 80 DEG C of infrared temperature, drying time 40min；Gingko slurry after drying is broken, obtains the full powder of dry gingko.
Experimental result: gingko sample after dry has the edge of a small amount of gingko lumps coke yellow occur in faint yellow.When
When infrared temperature is 80 DEG C, gingko MR value (moisture ratio) drops to 0.01 hereinafter, the time used is 40min from 1.Gingko is complete after drying
Powder crushes, and takes the full powder sample of 15.0g gingko, according to 1 method of embodiment, detect to obtain the content of ginkgoic acid through HPLC-UV-FLD
It is 3.60 × 10-5Mg/mg, the content of ginkgol are 3.00 × 10-6mg/mg.Compared with the full powder of the gingko of heated-air drying, ginkgo
Phenol content is reduced, and ginkgo acid content is without significant decrease, so simple infra-red drying can not reduce ginkgo acid content.
Embodiment 3 plus alkali are sized mixing the+infra-red drying preparation full powder 1 of gingko
Preparation method: the ginkgo shelling that will be selected rinses in sink, divides in draining 1h on bamboo sieve；The gingko benevolence drained
Crush pulp, the filtering of 40 mesh filter screens；The initial aqueous rate for measuring fresh white pulp is 53 ± 2%；40g gingko slurry is weighed, is added
Enter 0.08g Na2CO3It stirs evenly, stands 2h, be subsequently placed at 80 DEG C of infrared temperature, dry 40min；It is broken, it is complete to obtain gingko
Powder.
Experimental result: the gingko sample after dry distributes fragrance and slight burning.It is obtained after HPLC-UV-FLD is detected
Ginkgoic acid be 2.3 × 10-5Mg/mg, the content of ginkgol are 6.8 × 10-7mg/mg.Compared to non-alkaline cleaning infra-red drying
The full powder of gingko, ginkgoic acid, ginkgol content reduce 36.1% and 77.3% respectively；With the gingko Quan Fenxiang of heated-air drying
Content than, ginkgoic acid, ginkgol reduces 38.7% and 83.5% respectively, so combine with infra-red drying can for alkaline cleaning
To significantly reduce gingko Quan Fenzhong ginkgol and ginkgo acid content.
Embodiment 4 plus alkali are sized mixing the+infra-red drying preparation full powder 2 of gingko
Preparation method: the ginkgo shelling that will be selected rinses in sink, and clean fresh gingko is divided to be drained on bamboo sieve
1.5h；The gingko drained is crushed into pulp, the filtering of 40 mesh filter screens；The initial aqueous rate for measuring fresh white pulp is 53 ± 2%；
With 0.08g Na2CO3It sizes mixing to 40g gingko slurry and handles 4h, then gingko slurry is placed at 60 DEG C of infrared temperature, dry 75min；
It is broken, obtain the full powder of gingko.
Experimental result: the gingko sample after dry is in yellow, distributes fragrance.It is white after HPLC-UV-FLD detection is dry
Fruit Quan Fenzhong, the content of ginkgoic acid are 1.9 × 10-5Mg/mg, the content 6.3 × 10 of ginkgol-7mg/mg.With heated-air drying
The full powder of gingko is compared, ginkgoic acid, ginkgol content reduce 43.3% and 84.8% respectively, compared with alkaline cleaning 2h, silver
Apricot phenolic content is in a slight decrease.
Embodiment 5 plus alkali are sized mixing the+infra-red drying preparation full powder 3 of gingko
Preparation method: the ginkgo shelling that will be selected rinses in sink, divides in draining 1h on bamboo sieve；The gingko that will be drained
Crush pulp, the filtering of 40 mesh filter screens；Measure the initial aqueous rate 53 ± 2% of fresh white pulp；40g gingko slurry is weighed to add
0.08g Na2CO38h is handled, is placed at 70 DEG C of infrared temperature, dry 65min；It is broken, obtain the full powder of gingko.
Experimental result: though the gingko sample after dry has burning, its distinctive fragrance is also distributed.Through HPLC-UV-
FLD detects to obtain the content 1.49 × 10 of ginkgoic acid-5Mg/mg, the content of ginkgol are 6.0 × 10-7mg/mg。
Embodiment 6 plus alkali are sized mixing the+infra-red drying preparation full powder 4 of gingko
Preparation method: will rinse in the ginkgo shelling selected, sink, divides and drains 1h on bamboo is sieved；The gingko that will be drained
Smash pulp, the filtering of 40 mesh filter screens；Measure the initial aqueous rate 53 ± 2% of fresh white pulp；4.0g gingko slurry is weighed to be added
0.08g Na2CO3It sizes mixing and handles 12h, then gingko slurry is placed at 80 DEG C of infrared temperature, dry 45min；Gingko powder after drying
It is broken, obtain the full powder of dry gingko.
Experimental result: the full powder sample 15.0g of gingko after weighing drying detects to obtain ginkgoic acid through HPLC-UV-FLD
Content is 1.48 × 10-5Mg/mg, the content of ginkgol are 5.8 × 10-7mg/mg.As can be seen from the results, Ginkgolic Acids in Fruits of Ginkgo biloba and silver
The variation of apricot phenol content does not have dependence to the alkaline cleaning time, but compared with the gingko of not alkaline cleaning and drying, ginkgo
Acid, ginkgo phenol content significantly reduce, so alkaline cleaning can reduce the content of gingko Quan Fenzhong ginkgolic acid, reduce its poison
Property, improve edible value.
Color, flavor and the rehydration of the full powder of 7 gingko of embodiment
The full powder of gingko obtained after by the processing of the above infra-red drying or adding the infrared processing of alkali, color, flavor, rehydration
Deng with the full powder no significant difference of gingko made from drying and processing.
The above-mentioned detailed description carried out referring to drying means of the embodiment to the full powder of the gingko, is illustrative rather than limits
Qualitatively；Therefore the change and modification in the case where not departing from present general inventive concept, should belong within protection scope of the present invention.
Claims (1)
1. a kind of full powder, preparation method thereof of gingko that can reduce ginkgol and ginkgo acid content, it is characterised in that as steps described below into
Row:
(1) sorting: strictly select it is fresh, without rot, the gingko of free from insect pests is raw material；
(2) decladding: hard shell and fur clothing outside removal gingko；
(3) clean: the gingko for removing shell is cleaned in the sink；
(4) drain: the fresh gingko cleaned, which is divided, drains droplet on bamboo is sieved；
(5) crush slurrying: the gingko drained, which is placed in disintegrating machine, is crushed pulp, and the strainer of 40 mesh is filtered；
(6) measurement of initial aqueous rate: the initial aqueous rate of sampling measurement fresh white pulp；
(7) alkaline cleaning: being added suitable alkali in fresh white pulp, stands 2 ~ 12 h；
(8) measurement of moisture content: the time is at interval of 5min test sample moisture content in drying process；
(9) it infra-red drying: is carried out at a temperature of being 60 DEG C~80 DEG C in infrared temperature by the gingko for adding alkali stewing process to cross slurry red
Outer drying；Gingko slurry quality is 40g, the infra-red drying time is 40~80min；
(10) the gingko powder of dried cake is broken, obtains the full powder finished product of gingko；
Cleaning described in step (3) is to be placed in gingko in sink to wash away detritus and part fur clothing with circulating water；
Drain described in step (4) is to divide gingko to drain to surface on bamboo sieve without droplet, Draining time 1h~1.5h；
Determination of moisture described in step (8) is carried out using fast tester for water content, and initial aqueous rate is 53 ± 2 %；
Alkaline cleaning condition described in step (7) are as follows: alkali is soda Na2CO3, caustic dosage caustic dosage accounts for gingko total weight and is
0.1% ~ 0.2%, the alkaline cleaning time is respectively 2 ~ 12h.
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| CN108056362B (en) * | 2017-12-01 | 2021-07-20 | 江苏大学 | Processing method of attenuated whole ginkgo powder |
| CN108719749A (en) * | 2018-04-27 | 2018-11-02 | 浙江工业大学 | A kind of minimizing technology of Ginkgolic Acids in Fruits of Ginkgo biloba |
| CN109105846A (en) * | 2018-08-17 | 2019-01-01 | 北京大有升萃生物科技有限公司 | A kind of detoxification hides bitter, health ginkgo powder and preparation method thereof |
| CN110463965A (en) * | 2019-09-26 | 2019-11-19 | 南京林业大学 | A kind of ginkgo fruit powder preparation method rich in flavones and fruit powder obtained and its application |
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