CN106305795A

CN106305795A - Ginkgol soluble concentrate and preparation method thereof

Info

Publication number: CN106305795A
Application number: CN201510415427.2A
Authority: CN
Inventors: 石启田
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-07
Filing date: 2015-07-07
Publication date: 2017-01-11

Abstract

The invention discloses a botanical pesticide, namely ginkgol soluble concentrate, prepared from components such as ginkgo separated from ginkgo leaf and ginkgo biloba sarcotesta. The botanical pesticide has a broad spectrum effect of preventing and treating crop diseases and pests. The preparation method comprises the following steps: 1, preparing technical concentrate, and extracting ginkgo and other extracts by using an extraction method by using more than 80% of ethanol or more than 90% of methanol; removing the impurities by using a water extraction method, purifying, and taking the ginkgol as the technical concentrate; and 2, preparing an agent, adding a dispersing agent and a solubilizer into the technical concentrate, stirring and heating, and uniformly mixing, thereby obtaining the ginkgol soluble concentrate.

Description

Ginkgol soluble concentrate and preparation method thereof

The present invention relates to from Folium Ginkgo, gingko episperm separation and Extraction is main with ginkgol The extract of composition, the botanical pesticide prepared as raw material and preparation method, belong to preparation The technical field of botanical pesticide.

Botanical pesticide refers to that active ingredient derives from the pesticide of plant (from special Planting The active component extracted in training or wild plant).Refer mainly to utilize in plant is secondary Metabolite, the pesticide processed such as lignin, flavone, alkaloid, terpenes etc.. These materials are the defense functions of plant self and adapt to develop coevolution with harmful organism Result.Multiple secondary metabolites confrontation insecticide therein has refusing to eat, kills, anaesthetizes, suppresses Growth promoter and the activity of interference normal behaviour, also resist effect to multiple pathogen, be one The biological pesticide that class is natural.The most domestic botanical pesticide being in effective enrollment status effectively becomes Divide and there are about 30, product sum about 303.Such as, pyrethrum company of Australia 50% Pyrethrum mother's medicine of registration, the 70% of Yunnan Nanbao Biotechnology Co., Ltd.'s registration The former medicine of Pyrethrum, controlling object is aphid etc..Jiukang Science and Technology Development Co., Ltd. steps on 0.6% nimbin emulsion of note, controlling object brassicaceous vegetable diamondback moth, Pieris rapae etc., 5% aqueous matrine solution of Shanxi Hengtian Chemical Industry Co., Ltd.'s registration, controlling object Pieris rapae, aphid Worm, downy mildew, pear scab.2.5% fish of vegetable garden, Guangdong biological engineering company limited registration Rattan ketone, controlling object aphid, diamondback moth.(above data selects from pesticide net)

At present, food-safety problem is the problem that people extremely pay close attention to, and green peace is badly in need of in the whole society Total eclipse product.Biological pesticide preventing and treating diseases and pests of agronomic crop, is to solve to produce to remain vegetables without chemical pesticide One of key measure of dish fruit, grain etc..Although there being the registration of a variety of biological pesticide raw at present Produce, use biological pesticide still to account for minor proportion in preventing and treating diseases and pests of agronomic crop, trace it to its cause, Mainly the production quantity of biological pesticide is very little, and price is higher than chemical pesticide, and its underlying causes is Producing botanical pesticide to need to consume substantial amounts of plant resources, the cultivation of these plant resourceses needs Consume soil, manpower, financial resources, make botanical pesticide production cost improve.If nimbin is to use The leaf of Azadirachta Indica A. tree and fruit extract, and Azadirachta Indica A. tree growth 7-10 could result.Azadirachta Indica A. tree Plantation needs land occupation, spends artificial and financial resources.

Containing abundant ginkgol in Folium Ginkgo, gingko episperm.It is an object of the invention to from silver In Folium Pruni and gingko episperm, the composition such as separation and Extraction ginkgol, prepares plant source as raw material Pesticide one ginkgol soluble concentrate.

The object of the present invention is achieved like this:

Folium Ginkgo or gingko episperm are dried, roguing, after pulverizing, the above ethanol that adds 80% or More than 90% methanol is heated to 80 DEG C, keeps about 3h, releases solution and filters, and filtrate is dense It is reduced to containing alcohol less than 8% release, adds the deionized water of same volume and heat 80-90 DEG C, keep 3h rear solution oozes out standing cooling, make black glue mixing that paste ginkgol is main component Thing is layered completely with aqueous solution, and after discarding aqueous solution, the ginkgol obtained is the mixed of main component Compound is female medicine.

The preparation of preparation: by diffusant, the proportions system that ratio is 3: 7 of solubilizing agent and female medicine Agent.Nonionic surfactant is selected in diffusant, solubilizing agent.Surfactant is divided with female medicine After not being heated to about 75 DEG C, it is mixed and is sufficiently stirred for about 10 minutes so that it is the most mixed Close uniformly, be ginkgol soluble concentrate.

The effective ingredient of ginkgol soluble concentrate is ginkgol.Ginkgol is from Gingko biloba plant body Extract phenol type substances, its structure be on the phenyl ring of phenol certain carbon atom be connected with alkyl or Olefinic side chains, such as, tridecyl phenol, 15 alkene phenol, pentadecyl phenol, ten Five alkyl Resorcinos etc..This botanical pesticide has the work of wide spectrum preventing and treating diseases and pests of agronomic crop With, such as aphid, Pieris rapae, thrips, eucleid caterpillar, Folium Allii tuberosi ground maggot etc., downy mildew, white lead Disease, gray mold, epidemic disease, pear scab, the mushroom disease such as rice blast.

The present invention has the following advantages compared with existing botanical pesticide production technology:

1, needed raw material aboundresources, turns waste into wealth.There is multiple Semen Ginkgo production base in the whole nation, Such as the Tancheng County in Shandong, the Taixing county in Jiangsu, Pizhou City etc..Pizhou City's municipalization is even all over 300,000 mu National Semen Ginkgo Review Garden, often produce per year 300,000 tons of Folium Ginkgos of Folium Ginkgo and go out of use 4000 The Semen Ginkgo seed coat of ten thousand kilograms, the present invention makes these abundant agricultural resources be utilized, turns waste into wealth, It is not required to consume other plant resource.

2, the extraction ratio of ginkgol extract is high, and about about 25%, in extract, ginkgol contains Measure high by about more than 85%.

Owing to only utilizing ready-made resource, turn waste into wealth, the reasons such as ginkgol extraction ratio is high, fall The low cost producing botanical pesticide.

3, this botanical pesticide has the function of wide spectrum preventing and treating diseases and pests of agronomic crop, and both wide spectrum killed Worm, wide spectrum suppresses and kills mushroom disease again.

Claims

1. the preparation method of ginkgol soluble concentrate:

(1) preparation of female medicine: Folium Ginkgo or gingko episperm are dried, roguing, pulverizing, The ethanol or more than 90% methanol that add 6-8 times more than 80% are heated to 80 DEG C, keep 3-4h, Releasing extracting solution filter, concentrate the filtrate to containing alcohol less than 8% release, add isopyknic nothing from Sub-water, is heated to about 90 DEG C, keeps 3h, after aqueous solution oozes out, stands and is cooled to black palm fibre Color paste is layered completely with aqueous solution, discards aqueous solution, and dark brown paste is female medicine.

(2) preparation method of preparation:

Diffusant, solubilizing agent are separately heated to 75 DEG C with female medicine in the ratio of 3: 7, are mixed Merge stir about 10 minutes so that it is be sufficiently mixed uniformly.Nonionic surfactant is as expansion Powder and solubilizing agent.

2. the effective ingredient of the ginkgol soluble concentrate that prepared by this preparation method is ginkgol, silver Fructus Pruni phenol is the phenol type substances that can extract seed coat from Folium Ginkgo and silver, and its structure is the benzene of phenol Certain carbon atom on ring is connected with alkyl or olefinic side chains.Such as tridecyl phenol, 15 Alkene phenol, pentadecyl phenol, pentadecyl Resorcino etc., this botanical pesticide has The effect of wide spectrum preventing and treating diseases and pests of agronomic crop.