CN105126778B - Preparation of several frequently seen plants extract and application thereof - Google Patents
Preparation of several frequently seen plants extract and application thereof Download PDFInfo
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- CN105126778B CN105126778B CN201510405258.4A CN201510405258A CN105126778B CN 105126778 B CN105126778 B CN 105126778B CN 201510405258 A CN201510405258 A CN 201510405258A CN 105126778 B CN105126778 B CN 105126778B
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Abstract
The present invention relates to a kind of purposes of extract obtained from several frequently seen plants, its preparation method and the extract in the exploitation of natural formaldehyde adsorbent；Wherein frequently seen plants include moraceae plants humulus grass (Humulus scandens (Lour.) Merr.), grass bamboo grass（Oplismenus compositus(Linn.) Beauv.）, vitaceae Boston ivy（Parthenocissus tricuspidata）, contrayerva nettle（Urtica fissa E.Pritz）, liliaceous plant sansevieria trifasciata prain (Sansevieria trifasciataPrain), legume clover（Trifolium repensL.）, adiantaceae plant venushair fern (Adiantum capillus‑veneris L.).Research has shown that these plant extracts have good suction-operated to formaldehyde in air, and therefore, the extract can be used for preparing removal formaldehyde in air green product.
Description
Technical field
The present invention relates to a kind of preparation methods of extract obtained from plant and the extract to inhale in natural formaldehyde
Purposes in attached dose of exploitation；The extract can be used for the absorption of formaldehyde in indoor air.Wherein frequently seen plants include moraceae plants
Humulus grass (Humulus scandens (Lour.) Merr.), grass bamboo grass（Oplismenus compositus
(Linn.) Beauv.）, vitaceae Boston ivy（Parthenocissus tricuspidata）, contrayerva nettle
（Urtica fissa E.Pritz）, liliaceous plant sansevieria trifasciata prain (Sansevieria trifasciataPrain), pulse family is planted
Object clover（Trifolium repensL.）, adiantaceae plant venushair fern (Adiantum capillus-veneris
L.)；Belong to natural plants chemical field.
Background technology
In recent years, greatly improving with people's living standard, people life style and idea have larger change, people
To the quality requirement higher of living environment, room air pollution also just increasingly attracts people's attention.Volatile organic matter
(Volatile Organic Compounds, VOCs) is generally existing in interior decoration such as dimethylbenzene, toluene, benzene and formaldehyde
A class of pollutant.Formaldehyde pollution is in increasing trend to the report that health damages especially in decorated house.Research
Show that formaldehyde has apparent carcinogenesis, cytotoxicity and Skin and mucosa irritation to human body.Its exceeded danger to human body
Evil has the characteristics that chronicity, latency, concealment, seriously threatens the health of people.Therefore, more and more people
It pays close attention to and begins look for various effective approach and endangered to avoid or reduce room air pollution caused by human body.Indoor environment
Pollution problem and corresponding prevention problem have become one of hot spot of interest of people in modern society.
The Treatment process of indoor pollution mainly has at present：Active carbon adsorption, photocatalytic method, anion generator, ozone
Generator, photocatalyst technology etc..Although these technologies can disposably remove substantial amounts of polluter, in room air
The release time of polluter is very long, particularly formaldehyde, and not being twice can be fully erased using one, and needs to compare
Expensive cost, eliminate certainly room air pollution it is most effective be also that simplest method is to open door and window, allow air stream
It is logical, but need one section of long period.And the polluted gas of long-time low concentration also brings along human body very big influence, so one
Economic, simple, the permanently effective method of kind need further research and inquires into.
It is with increasingly sharpening for urban atmospheric pollution, phytoremediation technology is also gradual for the research of control atmosphere pollution
Increase, being concentrated mainly on experiment and screening at present has atmosphere pollution stronger resistivity and have stronger absorption to pollutant
The plant of detergent power, to wish in terms of searching out the species that there is certain repair function to atmosphere pollution by these experiments.
Many live plants, such as bracketplant, sansevieria trifasciata prain are all reported with formaldehyde absorbing effect, but appliable plant absorbs dirt in air
Object is contaminated, absorptivity easily reaches saturation, and the metabolism of plant is also than relatively low, therefore efficiently quickly purification difficult to realize,
It can not be achieved large-scale application.
However, containing Multiple components in natural plant extracts, being no lack of in chemical constitution can react with formaldehyde
Active group, such as amino, phenolic hydroxyl group, ketone group are expected to therefrom find the natural adsorbent for obtaining formaldehyde, to be applied to environmental protection
The exploitation of product.Therefore this seminar carries out the ethanol extract of a variety of common green plantss the investigation of formaldehyde absorbing experiment,
Result of study show moraceae plants humulus grass (Humulus scandens (Lour.) Merr.), grass bamboo grass
（Oplismenus compositus(Linn.) Beauv.）, vitaceae Boston ivy（Parthenocissus tricuspidata）, contrayerva nettle（Urtica fissa E.Pritz）, liliaceous plant sansevieria trifasciata prain
(Sansevieria trifasciataPrain), legume clover（Trifolium repensL.）, adiantaceae
Plant venushair fern (Adiantum capillus-veneris L.) ethanol extract to formaldehyde in air have good suction
Attached effect, exploitation and application available for green product.
The content of the invention
The present invention provides one kind from moraceae plants humulus grass (Humulus scandens (Lour.) Merr.), grass family
Plant bamboo grass（Oplismenus compositus(Linn.) Beauv.）, vitaceae Boston ivy
（Parthenocissus tricuspidata）, contrayerva nettle（Urtica fissa E.Pritz）, liliaceous plant
Sansevieria trifasciata prain (Sansevieria trifasciataPrain), legume clover（Trifolium repensL.）With/
Or adiantaceae plant venushair fern (Adiantum capillus-veneris L.) natural plant extracts, the extract
There is good suction-operated to the formaldehyde in air.
The present invention also provides include said extracted object and the green first of one or more adjuvants and/or excipient
Aldehyde adsorbent, the formaldehyde adsorbent can be prepared to spray agent, spray and solid aromatherapy.
Invention further provides purposes of the said extracted object in terms of for formaldehyde in air absorption.
The preparation method of natural plant extracts of the present invention comprises the following steps：
Fresh plant sample coarse powder is taken, impregnates 24 h, ultrasonic wave hydrotropy extraction 1 with the different concentration ethanol of 30 times of quality
H, filtering, filter residue repeat said extracted process 2 times, and filtering merges extracting solution three times, centrifugal filtration（10min 1000r/min）,
Filtrate is through 0.45 μm of micro-filtrate membrane filtration, wherein ethyl alcohol used preferably 70% ethyl alcohol.The present invention also provides comprising of the present invention
The green formaldehyde adsorbent of natural extract.The formaldehyde adsorbent is using extract of the invention as active ingredient, with environmental protection
Upper acceptable carrier is formed, and with the environmentally friendly dosage form presence of verification, these preparations can be spray agent, spray and
Solid aromatherapy etc..
Invention further provides each extracts to prepare the application of formaldehyde in air adsorbent.Carry out therefore not
Investigation of the extract to formaldehyde in air adsorbance under the conditions of.The experimental results showed that moraceae plants humulus grass (Humulus scandens (Lour.) Merr.), grass bamboo grass（Oplismenus compositus (Linn.)
Beauv.）, vitaceae Boston ivy（Parthenocissus tricuspidata）, contrayerva nettle（Urtica fissa E.Pritz）, liliaceous plant sansevieria trifasciata prain (Sansevieria trifasciataPrain), legume clover
（Trifolium repensL.）, adiantaceae plant venushair fern (Adiantum capillus-veneris L.) ethyl alcohol
Extract is respectively provided with formaldehyde in air good suction-operated, available for the green formaldehyde adsorbent of preparation.
Description of the drawings
Fig. 1 is sample-adding amount and Loading sequence table.
Fig. 2 is content of formaldehyde m ~ Ar relation curves.
Fig. 3 is humulus grass ethanol extract reaction temperature-content of formaldehyde relation curve.
Fig. 4 is humulus grass ethanol extract reaction time-content of formaldehyde relation curve.
Fig. 5 is humulus grass ethanol extract reaction pH- content of formaldehyde relation curves.
Fig. 6 is bamboo grass ethanol extract reaction temperature-content of formaldehyde relation curve.
Fig. 7 is bamboo grass ethanol extract reaction time-content of formaldehyde relation curve.
Fig. 8 is bamboo grass ethanol extract pH- content of formaldehyde relation curves.
Fig. 9 is Boston ivy ethanol extract reaction temperature-content of formaldehyde relation curve.
Figure 10 is Boston ivy ethanol extract reaction time-content of formaldehyde relation curve.
Figure 11 is Boston ivy ethanol extract pH- content of formaldehyde relation curves.
Figure 12 is nettle ethanol extract reaction temperature-content of formaldehyde relation curve.
Figure 13 is nettle ethanol extract reaction time-content of formaldehyde relation curve.
Figure 14 is nettle ethanol extract pH- content of formaldehyde relation curves.
Figure 15 is sansevieria trifasciata prain ethanol extract reaction temperature-content of formaldehyde relation curve.
Figure 16 is sansevieria trifasciata prain ethanol extract reaction time-content of formaldehyde relation curve.
Figure 17 is sansevieria trifasciata prain ethanol extract pH- content of formaldehyde relation curves.
Figure 18 is clover ethanol extract reaction temperature-content of formaldehyde relation curve.
Figure 19 is clover ethanol extract reaction time-content of formaldehyde relation curve.
Figure 20 is clover ethanol extract pH- content of formaldehyde relation curves.
Figure 21 is venushair fern ethanol extract reaction temperature-content of formaldehyde relation curve.
Figure 22 is venushair fern ethanol extract reaction time-content of formaldehyde relation curve.
Figure 23 is clover ethanol extract pH- content of formaldehyde relation curves.
Specific embodiment：
Embodiment 1：
The drafting of formaldehyde standard curve：
1）Experimental principle
Formaldehyde in air and the complex compound of acetylacetone,2,4-pentanedione reaction generation yellow, with spectrophotometer at 414 nm colorimetric
It is quantitative.
）The preparation of standard curve
（1）Prepare formaldehyde standard solution：The ug/mL of ρ=10 draws 4.28 mL formaldehyde typical shelf liquid, is diluted with water to
In 500 mL volumetric flasks.
（2）Acetylacetone,2,4-pentanedione preparation of reagents：50 g ammonium acetates, 6 mL glacial acetic acids and 0.5 mL acetylacetone,2,4-pentanediones are dissolved in 100 mL
In water.
（3）10 25 mL volumetric flasks are taken, are numbered respectively, then are loaded by Fig. 1 Loading sequences：
5.0 mL acetylacetone,2,4-pentanedione reagents are respectively added in into standard pipe and sample cell, are jumped a queue, mixing, in 60 DEG C of ± 1 DEG C of water-baths
15 min of middle placement, room temperature is cooled to after taking-up with tap water.Blank is done with " 0 " number pipe, with 30 nm under 414 nm of wavelength
Cuvette colorimetric.It is mapped with content of formaldehyde to absorbance, draws standard curve, as shown in Figure 2.The formaldehyde it can be seen from curve
Content m ~ Ar relation curves are substantially in a linear relationship, after linear fit, curvilinear equation：Y=0.0101x+0.0040, phase relation
Number：R2=0.9998.Compared with the literature, this curve correlation coefficient is relatively preferable and slope is higher, is conducive to content of formaldehyde measure.
Embodiment 2：
The design of experimental provision：
Select 500 mL brown bottles that will shift to an earlier date ready filter paper as sealed compartment and be sticked on bottle cap；Then carried to be measured
Liquid is taken to be previously charged into, then the formaldehyde of 20 uL is dropped on the filter paper of bottle cap with liquid-transfering gun, is closed the lid rapidly, and with protect
Fresh film seals covering part, adsorbs a period of time under normal pressure, takes out extracting solution to be measured, measures the concentration of formaldehyde wherein contained.
Embodiment 3：
The preparation of Herba humuli scandentis extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of Herba humuli scandentis extract
Fresh humulus grass leaf 50g is taken to crush, adds in 1000 mL, 70% ethyl alcohol soaked overnights, ultrasonic wave hydrotropy extraction 1h, centrifugation
Filtering（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL,
And be stored in it is spare in refrigerator, measure pH be 6.75.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
The above-mentioned humulus grass extracting solutions of 100 mL are taken, by the device in embodiment 2, squeeze into 20mL formaldehyde in carrying with liquid-transfering gun respectively
Before glue on the filter paper of bottle cap, be respectively placed at 0 DEG C, 5 DEG C, 10 DEG C, 20 DEG C, 30 DEG C, 35 DEG C and react 30 min；With identical pH
Value and 70% ethyl alcohol of volume do blank control under identical conditions.
Sample measures：Take the volumetric flask of 4 50 mL, number is No. 1-4 respectively, No. 1 move into 70% ethanol solution (pH value with
Reaction solution is identical）3 mL, No. 2 move into above-mentioned 3 mL of humulus grass extracting solution, and No. 3 move into control group reaction solution 3 mL, are moved into No. 4 real
Test 3 mL of group reaction solution；Then with distilled water constant volume, 5 mL of acetylacetone,2,4-pentanedione reagent is added, is shaken up, is placed in 60 DEG C of ± 1 DEG C of water-baths
Cooling is taken out after 15 min of middle reaction；No. 2, No. 3 and No. 4 are measured at 414 nm using the solution in No. 1 pipe as reference solution
The light absorption value of solution in pipeA 2、 A 3、 A 4 （It surveys three times, averages）.The formaldehyde absorbing amount in sample is calculated by formula (1) and formula (2)：
A r =bW+a（By drafting standard curve, regression equation is obtained） (1)
In formula：A r To correct absorbance,A r =A 4 -A 3 -A 2 ；WFor formaldehyde amount, μ g；aFor the intercept of regression equation；
bFor the slope of regression equation.
Concentration of formaldehyde in sampleρ=W/V (2)
Wherein,ρFor formaldehyde mass concentration, ug/mL in sample；VFor samples taken volume, mL.
It measures respectively and calculates the concentration of formaldehyde adsorption under different temperatures, record data, draw curve.
70% ethanol total extract of humulus grass is as shown in Figure 3 to formaldehyde in air adsorption effect at a temperature of differential responses.By scheming
3 understand, during 0 ~ 20 DEG C, the uptake of humulus grass ethanol extract PARA FORMALDEHYDE PRILLS(91,95) increases temperature with the rise of temperature, this may
It is related with formaldehyde property.Formaldehyde is gaseous state at normal temperatures, volatile, and boiling point evaporation rate at 19.5 DEG C, heat faster, and leads to
Occur as an aqueous solution in the case of often；When temperature is 20 DEG C, adsorption concentration reaches 3.7624 ug/mL of maximum；Work as temperature
The uptake of humulus grass ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is reduced with the rise of temperature during 20 ~ 35 DEG C.
3）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
The above-mentioned Herba humuli scandentis extracts of 100mL are taken respectively, by the device in embodiment 2, squeeze into 20mL formaldehyde with liquid-transfering gun respectively
In gluing in advance on the filter paper of bottle cap, it is placed under the conditions of temperature is 20 DEG C and reacts 15,30,45,50,55,60,65,70 respectively
min；Blank control is made under identical conditions with same pH and 70% ethyl alcohol of volume.Sample measures and calculates the adsorbance of sample
Same reaction temperature.
It measures respectively and calculates the concentration of different time formaldehyde adsorption, record data, draw curve（See Fig. 4）.
Humulus grass ethanol extract increases the uptake of formaldehyde in air with the extension in reaction time, in 50min
When, uptake reaches highest, is 4.4224 ug/mL；PARA FORMALDEHYDE PRILLS(91,95) absorbs into a plateau after 50min, and adsorption concentration exists
4ug/mL or so fluctuations.
4）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
The above-mentioned humulus grass extracting solutions of 100 mL are taken, it is 7,8,9,10,11,12 to adjust pH value with 0.1 mol/LNaOH, by reality
The device in example 2 is applied, 20 uL formaldehyde is squeezed into gluing in advance on the filter paper of bottle cap with liquid-transfering gun respectively, seals, be placed in immediately
Temperature is to react 50 min at 20 DEG C, makees blank control under identical conditions with same pH and 70% ethyl alcohol of volume.Sample measures
With the calculating same reaction temperature of sample adsorption amount.（Note：It is respectively 2 mL that volumetric flask is moved into when sample measures；Extracting solution and institute in No. 2
The pH value of corresponding reaction solution is identical）
It measures respectively and calculates the concentration of formaldehyde adsorption under different pH, record data, draw curve.
When pH value is 7 ~ 8, the uptake of humulus grass ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is increased slightly, but ascendant trend is not ten clearly demarcated
It is aobvious；During pH=8, the adsorption effect of humulus grass ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is best, and adsorption concentration reaches 4.0594 ug/mL of maximum；pH
Be worth for 8 ~ 12 when, the uptake of extracting solution PARA FORMALDEHYDE PRILLS(91,95) declines with the rise of pH value, and trend is apparent（See Fig. 5）.
Embodiment 4：
The preparation of leaf of bamboo leaf extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of bamboo grass extract
Fresh leaf of bamboo blade of grass 50g is taken to crush, adds in 70% ethyl alcohol soaked overnights of 1000mL, ultrasonic wave hydrotropy extracts 1h, from
The heart filters（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL
In, and be stored in it is spare in refrigerator, measure pH be 6.86.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in Figure 6.
When temperature is 0~10 DEG C relatively low, the adsorbance of bamboo grass ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is smaller；10~20 DEG C it
Between in steep increase trend, 20 DEG C of whens, reach maximum adsorption, up to 3.9 μ g/mL；When 20~40 DEG C, the absorption of extracting solution PARA FORMALDEHYDE PRILLS(91,95)
Amount is successively decreased, but still the adsorbance being more than between 0~10 DEG C.
2）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in Figure 7.
The Relationship Comparison of reaction time and formaldehyde absorbing amount fluctuates, in general trend from the point of view of, present incrementally to become before 30 min
Gesture；In 30 min, formaldehyde absorbing amount has reached maximum, 3.05 μ g/mL；After 30 min, adsorbance is gradually reduced.
3）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
Method is the same as embodiment 3.Experimental result is as shown in Figure 8.
When pH is when between 2~5, Trend Stationary；When pH is 5~7, adsorbance is in increasing trend；It is reached in pH=7
Maximum, 4.35 μ g/mL；And pH is from 7~8（Neutrality arrives alkali transition）When drop suddenly.
Embodiment 5：
The preparation of parthenocissus extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of parthenocissus extract
Fresh Boston ivy leaf 50g is taken to crush, adds in 1000mL70% ethyl alcohol soaked overnights, ultrasonic wave hydrotropy extraction 1h, centrifugation
Filtering（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL,
And be stored in it is spare in refrigerator, measure pH be 5.05.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in Figure 9.
At 0 DEG C ~ 20 DEG C, the adsorbance of Boston ivy ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is slowly increased；When 20 DEG C ~ 30 DEG C, absorption
Amount is rapid to be risen, and 30 DEG C of whens reach maximal absorptive capacity, 4.01ug/mL；Adsorption capacity is gradually reduced after 30 DEG C.
2）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in Figure 10.
In 0-30min, with the growth in reaction time, the trend of growth is also presented in the amount of the formaldehyde of absorption；Work as 30min
When, adsorbance is maximum, is 4.11ug/mL；Adsorbance is gradually reduced after 30min.
3）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
Method is the same as embodiment 3（Adjust pH2,3,4,5,6,7）.Experimental result is as shown in figure 11.
The adsorbance of Boston ivy ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is fluctuated in pH2-4, afterwards in ascendant trend, when pH=5
When, adsorbance reaches maximum 4.16ug/mL；Adsorbance continues to decline afterwards.
Embodiment 6：
The preparation of nettle extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of nettle extract
Fresh folium urticae 50g is taken to crush, adds in 1000 mL, 70% ethyl alcohol soaked overnights, ultrasonic wave hydrotropy extraction 1h, centrifugation
Filtering（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL,
And be stored in it is spare in refrigerator, measure pH be 8.57.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 12.
In the range of measured temperature, the adsorbance of nettle ethanol extract PARA FORMALDEHYDE PRILLS(91,95) first increases with the rise trend presentation of temperature
The trend reduced after adding, when temperature peak value occurs for 30 DEG C, absorption maximum concentration is 5.247 ug/ml.Wherein at 5 DEG C ~ 10 DEG C
Increase trend is shallower, and variation with temperature is more apparent afterwards.
2）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 13.
During 0 ~ 30 min, formaldehyde absorbing value is in rising trend；30 ~ 50 min are in a plateau, and adsorption concentration exists
It is fluctuated between 3.5-4.0 ug/ml, when adsorption time is 45 min, reaches maximal absorptive capacity, 3.894 ug/ml；50 min
Afterwards, there is slight downward trend.
3）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
Method is the same as embodiment 3.Experimental result is as shown in figure 14.
Under the conditions of differential responses pH, the adsorption effect of nettle ethanol extract PARA FORMALDEHYDE PRILLS(91,95) is changed significantly.When 7 ~ 9 model of pH value
In enclosing, apparent increasing trend is presented in formaldehyde absorbing amount；As pH=9, reach 5.347 ug/ml of maximal absorptive capacity；PH value 9 it
Formaldehyde absorbing amount, which is generally presented, afterwards is substantially reduced.
Embodiment 7：
The preparation of sansevieria trifasciata prain extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of sansevieria trifasciata prain extract
Fresh sansevieria trifasciata prain leaf 50g is taken to crush, adds in 1000 mL, 70% ethyl alcohol soaked overnights, ultrasonic wave hydrotropy extracts 1h, from
The heart filters（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL
In, and be stored in it is spare in refrigerator, measure pH be 6.32.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 15.
Temperature is in the range of 0 DEG C ~ 20 DEG C, the uptake variation unobvious of sansevieria trifasciata prain extracting solution PARA FORMALDEHYDE PRILLS(91,95)；30 DEG C ~
Uptake is raised with temperature and increased at 40 DEG C, and assimilation effect is best at 40 DEG C, and extracting solution formaldehyde adsorption concentration is up to 4.827
Ug/mL, 40 DEG C of later uptakes gradually decrease.
2）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 16.
In 15 min ~ 20 min, the uptake of sansevieria trifasciata prain ethanol extract PARA FORMALDEHYDE PRILLS(91,95) increases as soak time extends
Add；The adsorbance of its PARA FORMALDEHYDE PRILLS(91,95) is fluctuated in a small range during 20 min ~ 40min, no significant change, as 45 min, extracting solution
The adsorption concentration of PARA FORMALDEHYDE PRILLS(91,95) reaches 4.257 ug/mL of maximum；After 45min, uptake is gradually reduced.
3）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
Method is the same as embodiment 3（PH is adjusted to 5,6,7,8,9 respectively）.Experimental result is as shown in figure 17.
In the range of 5 ~ 8, the uptake of sansevieria trifasciata prain extracting solution PARA FORMALDEHYDE PRILLS(91,95) with pH value is raised and increased solution ph；PH value
In the range of 8 ~ 9, uptake is raised with pH value and reduced；When pH=8, extracting solution maximum adsorption concentration is 6.040 ug/mL.
Embodiment 8：
The preparation of shamrock extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of shamrock extract
Fresh clover leaf 50g is taken to crush, adds in 1000 mL, 70% ethyl alcohol soaked overnights, ultrasonic wave hydrotropy extracts 1h,
Centrifugal filtration（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL
In, and be stored in it is spare in refrigerator, measure pH be 6.24.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 18.
In the range of 0 DEG C ~ 40 DEG C, the uptake of clover extracting solution PARA FORMALDEHYDE PRILLS(91,95) with temperature is raised and increased temperature,
Reach maximum adsorption concentration of formaldehyde at 40 DEG C up to 3.193 ug/mL, 40 DEG C of later uptakes gradually decrease.
2）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 19.
In 10 min ~ 45min, the uptake of clover ethanol extract PARA FORMALDEHYDE PRILLS(91,95) increases as soak time extends
Add；The adsorption concentration of extracting solution PARA FORMALDEHYDE PRILLS(91,95) reaches 3.564 ug/mL of maximum during 45 min；After 45min, under uptake is gradual
Drop.
3）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
Method is the same as embodiment 3（PH is adjusted to 4,5,6,7,8 respectively）.Experimental result is as shown in figure 20.
In the range of 4 ~ 6, the uptake of clover extracting solution PARA FORMALDEHYDE PRILLS(91,95) with pH value is raised and increased solution ph；PH value
In the range of 5 ~ 8, uptake is raised with pH value and reduced；When pH=6, extracting solution maximum adsorption concentration is 3.168 ug/mL.
Embodiment 9：
The preparation of venushair fern extract and PARA FORMALDEHYDE PRILLS(91,95) adsorption experiment：
1）The preparation of venushair fern extract
Fresh venushair fern leaf 50g is taken to crush, adds in 1000 mL, 70% ethyl alcohol soaked overnights, ultrasonic wave hydrotropy extracts 1h,
Centrifugal filtration（10min 1000r/min）, filtrate is through 0.45 μm of micro-filtrate membrane filtration.Filtrate is collected in the brown bottle of 500 mL
In, and be stored in it is spare in refrigerator, measure pH be 6.34.
2）The influence of reaction temperature PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 21.
In the range of 10 DEG C ~ 45 DEG C, the uptake of venushair fern extracting solution PARA FORMALDEHYDE PRILLS(91,95) with temperature is raised and increased temperature,
Reach maximum adsorption concentration of formaldehyde at 45 DEG C up to 3.812 ug/mL, 45 DEG C of later uptakes gradually decrease.
2）The influence of reaction time PARA FORMALDEHYDE PRILLS(91,95) adsorption effect
Method is the same as embodiment 3.Experimental result is as shown in figure 22.
In 5 min ~ 75min, the uptake of venushair fern ethanol extract PARA FORMALDEHYDE PRILLS(91,95) increases as soak time extends；
The adsorption concentration of extracting solution PARA FORMALDEHYDE PRILLS(91,95) reaches 4.381 ug/mL of maximum during 75 min；After 75 min, under uptake is gradual
Drop.
3）React the influence of pH PARA FORMALDEHYDE PRILLS(91,95) adsorption effects
Method is the same as embodiment 3（PH is adjusted to 5,6,7,8,9 respectively）.Experimental result is as shown in figure 23.
In the range of 5 ~ 8, the uptake of clover extracting solution PARA FORMALDEHYDE PRILLS(91,95) is raised with pH value in increase trend solution ph；
After 8, uptake with pH value is raised and reduced pH value；When pH=8, extracting solution maximum adsorption concentration is 3.762 ug/mL.
In summary, moraceae plants humulus grass (Humulus scandens (Lour.) Merr.), the grass leaf of bamboo
Grass（Oplismenus compositus(Linn.) Beauv.）, vitaceae Boston ivy（Parthenocissus tricuspidata）, contrayerva nettle（Urtica fissa E.Pritz）, liliaceous plant sansevieria trifasciata prain
(Sansevieria trifasciataPrain), legume clover（Trifolium repensL.）, adiantaceae
Plant venushair fern (Adiantum capillus-veneris L. ethanol extract) is respectively provided with formaldehyde in air good
Suction-operated, when extract concentrations are that (content of fresh plant is 0.1g to 0.1 g/ml in 1 ml extracting solutions）When, PARA FORMALDEHYDE PRILLS(91,95)
Maximum adsorption concentration be respectively 4.42 ug/mL, 4.35 μ g/mL, 4.16ug/mL, 5.35 ug/ml, 6.04 ug/mL, 3.56
ug/mL、4.38 ug/mL。
Claims (4)
- A kind of 1. plant extracts for being used to adsorb formaldehyde in air, which is characterized in that the plant origin of the plant extracts Selected from one of the following or a variety of：Moraceae plants humulus grass (Humulus scandens (Lour.) Merr.), grass bamboo Leaf grass（Oplismenus compositus(Linn.) Beauv.）, vitaceae Boston ivy（Parthenocissus tricuspidata）, contrayerva nettle（Urtica fissa E.Pritz）, legume clover（Trifolium repensL.）；The plant extracts is prepared using the method comprised the steps of：Take fresh plant sample thick Powder impregnates 24 h with 70% ethyl alcohol of 30 times of quality, and ultrasonic wave hydrotropy extracts 1 h, filtering, and filter residue repeats said extracted process 2 Secondary, filtering, extract is prepared through 0.45 μm of micro-filtrate membrane filtration in extracting solution, centrifugal filtration, filtrate three times for merging.
- 2. purposes of the plant extracts described in claim 1 in terms of formaldehyde in air is absorbed.
- 3. plant extracts described in claim 1 is in the application for preparing the product in terms of absorbing formaldehyde in air.
- 4. application according to claim 3, wherein product exist in the form of spray agent, spray or solid aromatherapy.
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| CN107694003A (en) * | 2017-10-10 | 2018-02-16 | 广州市澳米环保科技有限公司 | A kind of formaldehyde scavenger and preparation method thereof |
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