CN1072819A

CN1072819A - Grain protective agent and manufacture method

Info

Publication number: CN1072819A
Application number: CN 91111240
Authority: CN
Inventors: 李斌; 顾宁珂
Original assignee: HAIDIAN DISTRICT HAIDE AQUATIC PRODUCT CO Ltd BEIJING CITY
Current assignee: HAIDIAN DISTRICT HAIDE AQUATIC PRODUCT CO Ltd BEIJING CITY
Priority date: 1991-12-03
Filing date: 1991-12-03
Publication date: 1993-06-09

Abstract

Grain protective agent of the present invention is formulated by the fruit of a cubeb litsea tree, Fructus meliae toosendan, Radix Carpesii, tarragon, tangerine peel, anise, several natural plants of kaempferia galamga, and manufacture method is simple.This grain protective agent is nontoxic, except that having desinsection and insect protected effect, also can suppress the growth of multiple moulds such as aspergillus flavus, aspergillus nidulans, aspergillus versicolor, and protection grain can not go mouldy, and can keep the original quality of grain.

Description

Grain protective agent and manufacture method

The present invention relates to a kind of insecticide or pest repellent and manufacture method that grain is not subjected to insect pest of preserving.

Insect pest can take place in grain in storage, the annual loss that causes owing to insect pest is serious.And pest of stored grain distribute heat and moisture in getting food, breathing, drainage and abnormal activity, to impel grain moisture condensation, generate heat, go mouldy, cause the nutrient of grain to wreck, quality reduces, and is unfavorable for health.Prevent and treat the method for pest of stored grain at present, what be widely used is the chemical fumigation method, and this method control efficiency is good, but the cost height is dangerous, shortcomings such as residual drug addiction height.In urban households' storage grain, generally adopt " safe pesticide tablet " and protectants such as " grain guarantors "; its main component of these protective agents has agricultural chemicals such as dichlorvos or volatile organophosphorus insecticide; though insecticidal effect is good; consumption is also few; but toxicity is big, and grain is easily by pesticide pollution, and long-term use can make to produce in the human body accumulates; cause murder by poisoning, impair one's health.

The objective of the invention is to provide a kind of grain protective agent and manufacture method, and this protection element is formulated by natural plants fully, nontoxic, has insecticide and insect protected effect.

Grain protective agent of the present invention is by the natural aromatic plant with insecticidal action, and pest of stored grain is had the natural plants of repellent action, and has several pure natural plants such as fragrant plant of smoked kill effect to be mixed with through processing to the mite class.Each constituent content is as follows:

Account for weight (g) and be equivalent to weight %

The fruit of a cubeb litsea tree 120 40

Fructus meliae toosendan 60 20

Radix Carpesii 20 6.7

Tarragon 30 10

Tangerine peel 30 10

Anistree 20 6.7

Kaempferia galamga 20 6.6

Add up to 300g 100

Above-mentioned each constituent content allows amplitude of variation ± 5%.Wherein based on the fruit of a cubeb litsea tree, it contains abundant volatile oil, by the slow evaporation of volatile oil, reaches the insecting driving insect effect and pest of stored grain is produced the smoked kill effect.

Manufacture method may further comprise the steps:

1. the fruit of a cubeb litsea tree and Fructus meliae toosendan extract three times with 95% alcohol heat reflux through fragmentation, each one hour, No. three extracts merging are condensed into medicinal extract;

2. Radix Carpesii, tarragon, tangerine peel, anise, kaempferia galamga are broken into 40～60 order fine powders through mixed powder;

3. will go on foot the fruit of a cubeb litsea tree, the Sichuan chinaberry extract that make by the pulverulent mixture and the 1st that the 2nd step made and add in the lump in the mixer, mix half an hour;

4. after mixing, packing rapidly, packing promptly get the grain protective agent product.

Advantage: grain protective agent of the present invention has good smoked killing effect; all effective to various pests; lasting period is more than 5 months; pollution-free to grain; but insect protected in addition; and can suppress the growths of moulds such as aspergillus flavus, aspergillus nidulans, aspergillus versicolor, yellowish green aspergillus, island aspergillus, tangerine aspergillus, protection grain can not go mouldy.Effect:

-bottled test adds the whole grain of 200g rice respectively in three bottles, insert 5 rice weevils and 5 red flour beetle adults; according to metering is to add 375g, 300g, 225g grain protective agent in the 100kg grain; seal, at room temperature deposited 30 days, its control efficiency is as shown in table 1.

-packed test, foodstuff pest comprises rice weevil, red flour beetle, gelechiid, tests, its control efficiency is as shown in table 2.

No worm grain (when producing new grain per year) is selected in-Xin grain insect protected test, presses to add protection plain 375g, 300g, three kinds of meterings of 225g in the 100kg grain; deposit no insect appearance after 5 months; and do not execute in the plain contrast grain of protection, insect density is 43～71/every kg grain, the rate of damaging by worms is 2.4～5.2%.

The bottled result of the test of table 1

Handle g/100kg grain	The rate of damaging by worms (%)	Contrast reduces (%) as a rule	Average single bottle of borer population alive (head)
				375	2	92.6	0
300	2	92.6	0
				225	4	85.2	0
Reference examples	27	－	126

Result of the test shows that three kinds of various dose all can all be killed pest of stored grain, and insect that reference examples connects propagation is more than 10 times.

The packed result of the test of table 2

		Worm alive (head/kg)	Comparison is according to reducing (%)	The rate of damaging by worms (%)	Comparison is according to reducing (%)
						The insect population radix		13.3	-	7.0	-
Behind the medicine 30 days	375	1.3	98.9	7.3	71.6
						300	3.0	97.5	8.0	68.9
	225	7.3	94.0	10.0	61.1
						Contrast	12.1	-	25.7	-
	Behind the medicine 60 days	375	0	100	7.3						87.0
300						0	100	8.0	85.7
		225	21	90.2	10.0					82.1
Contrast						214	-	56	-

Result of the test shows, when measuring to 100kg grain usefulness plain 375g of protection and 300g, all can all kill storage grain worm after two months, and the rate of damaging by worms reduces significantly.Metering is relatively poor for the preventive effect of 225g, produces effect but compare still with reference examples.

Claims

1, a kind of grain protective agent is characterized in that: it is made up of the fruit of a cubeb litsea tree, Fructus meliae toosendan, Radix Carpesii, tarragon, tangerine peel, anise, kaempferia galamga natural plant.

2,, it is characterized in that described each constituent content accounts for weight % and is according to the grain protective agent of claim 1: the fruit of a cubeb litsea tree 40, Fructus meliae toosendan 20, Radix Carpesii 6.7, tarragon 10, tangerine peel 10, anise 6.7, kaempferia galamga 6.6, above-mentioned each constituent content allows amplitude of variation ± 5%.

3, a kind of manufacture method of grain protective agent of claim 1 is characterized in that it may further comprise the steps:

(1) fruit of a cubeb litsea tree and Fructus meliae toosendan extract three times with 95% alcohol heat reflux through fragmentation, each one hour, No. three extracts merging are condensed into medicinal extract;

(2) Radix Carpesii, tarragon, tangerine peel, anise, kaempferia galamga are broken into 40～60 order fine powders through mixed powder;

(3) pulverulent mixture and the fruit of a cubeb litsea tree, Sichuan chinaberry extract are added in the mixer in the lump, mix half an hour;

(4) mix after, rapidly packing, packing.