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Dill seed volatile-oil fragrant mildewcide and preparation method and application thereof

A technology of volatile oil and antifungal agent, applied in the field of dill seed volatile oil aromatic antifungal agent and its preparation, to achieve the effects of abundant resources, convenient transportation and use, and extended shelf life

Active Publication Date: 2013-01-09
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the extensive use of chemical antifungal agents has brought serious ecological environmental pollution problems to the world, and its residual toxicity has also become a serious hidden danger of food safety, which makes domestic and foreign countries have been looking for ideal products and methods to Control the mildew of food, medicinal materials, leather products, grain and feed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: the preparation of dill seed volatile oil aromatic fungicide

[0036] 1. Preparation of dill seed volatile oil

[0037] Crush the dried dill seeds and pass through a 40-mesh sieve, weigh a certain amount, add an appropriate amount of distilled water, distill, and dehydrate each 90-100ml of distillate with 35-45g of anhydrous sodium sulfate to obtain dill seed volatile oil.

[0038] 2. Preparation of dill seed volatile oil aromatic fungicide

[0039] Take 75 units of dill seed volatile oil, add 16 units of Span 80, 9 units of Tween 80, and 290 units of distilled water, and stir with a high-speed homogenizer for 2 minutes at 50°C-60°C to make dill seed volatile oil emulsion. Its HLB value is 8.2;

[0040] After hot-melting the agar, cool down naturally to 50-60°C; slowly add the dill seed volatile oil emulsion prepared above into the hot-melted agar solution, adjust the amount of distilled water according to the required volatile oil concentration, and c...

Embodiment 2

[0041] Embodiment 2: the preparation of dill seed volatile oil aromatic fungicide

[0042] 1. Preparation of dill seed volatile oil

[0043] Crush the dried dill seeds and pass through a 40-mesh sieve, weigh a certain amount, add an appropriate amount of distilled water, distill, and dehydrate each 90-100ml of distillate with 35-45g of anhydrous sodium sulfate to obtain dill seed volatile oil.

[0044] 2. Take 62.5 units of dill seed volatile oil, add 17 units of Span 80, 8 units of Tween 80, and 330 units of distilled water, and stir with a high-speed homogenizer for 2 minutes at 50°C-60°C to make dill seed volatile oil emulsification Liquid, its HLB value is 8.5;

[0045] After hot-melting the agar, cool down naturally to 50-60°C; slowly add the dill seed volatile oil emulsion prepared above into the hot-melted agar solution, adjust the amount of distilled water according to the required volatile oil concentration, and control the final concentration of the agar At 2%, s...

Embodiment 3

[0046] Embodiment 3: Determination of stability of dill seed volatile oil aromatic antifungal agent

[0047] GC conditions: Agilent 6890 gas chromatograph, capillary column, column temperature 100 °C, temperature program: 15 °C / min to 280 °C, hold for 5 min. The inlet temperature was 280 °C, and the split ratio was 25:1.

[0048]Headspace sampling conditions: sample temperature: 50 °C, 60 °C, 70 °C; injection needle temperature: 100 °C; transfer line temperature: 120 °C; gas phase cycle time: 20 min; heating time: 5 min, 10 min, respectively , 15 min, 25 min, 35 min; pressurization time: 0.2 min; sampling time: 0.2 min; injection time: 0.5 min. After the preparation of the test article is completed, in the case of hot solution, accurately pipette 5 ml into the headspace vial. Cool the headspace vial in an ice-water bath to solidify the sample for use.

[0049] 1. Under the conditions of 50 ℃, 60 ℃ and 70 ℃, heat the sample for 5 min, 10 min, 15 min, 25 min and 35 min resp...

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Abstract

The invention relates to a dill seed volatile-oil fragrant mildewcide and a preparation method and application thereof. The mildewcide is characterized by comprising dill seed volatile oil, emulsifiers and distilled water. The preparation method includes stirring the dill seed volatile oil, the emulsifiers and the distilled water to be sufficiently emulsified and adding the mixture into melted gelatinized solution, sealing and packaging with PVDC (polyvinyl dichloride) films after cooling to solidify, and then obtaining the dill seed volatile-oil fragrant mildewcide. Generally, in the dill seed volatile-oil fragrant mildewcide, purely natural plant preparations are adopted and are rich in resources, the preparation method is simple and easy and low in cost. The dill seed volatile-oil fragrant mildewcide prepared is environment-friendly, half-life period thereof under an open condition is about 65 days, and the shelf life of the dill seed volatile-oil fragrant mildewcide which is sealed and packaged with the PVDC films can be prolonged to 1-2 years. Further, the dill seed volatile-oil fragrant mildewcide is quite convenient to transport and use and can be used for mildew prevention of food, drug materials, leather products, grains and fodders.

Description

Technical field: [0001] The invention relates to the technical field of antifungal agents, in particular to a dill seed volatile oil aromatic antifungal agent and its preparation method and application. Background technique: [0002] Volatile oil is a general term for a class of volatile oily components present in plants that have a special odor (mostly fragrance), small molecular weight, can be distilled out with water vapor, and are immiscible with water. Volatile oil is one of the secondary metabolites of plants and has a certain aromatic smell. It is widely distributed in the plant kingdom, mostly concentrated in Compositae, Rutaceae, Lauraceae, Labiatae, Myrtaceae, Zingiberaceae, Rhododendronaceae, Ranunculaceae, Pepperaceae, Octagonaceae, Oleaceae, Rosaceae, Chestnut Orchidaceae, Aristolochiaceae, Magnoliaceae, etc. As a natural antibacterial substance, volatile oil can be extracted from the fruits, leaves, seeds and flowers of some plants. There are about 3,000 k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/10A01N25/04A01P3/00
Inventor 王有为田俊李慧博班小泉陈丽君陈玉欣马冰馨
Owner WUHAN UNIV
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