Preparation method of micro-emulsified composite plant essential oil rice preservative

A plant essential oil and microemulsion technology, which is applied in the fields of edible seed preservation, food science, food preservation, etc., can solve the problem that the continuity cannot be guaranteed, the microemulsion system is difficult to maintain stability for a long time, and the antibacterial effect of eucalyptus essential oil nanoemulsion needs to be improved And other issues

Inactive Publication Date: 2020-10-30
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surfactants and co-surfactants added to the microemulsion are easy to form a microemulsion system spontaneously due to the negative interfacial tension, but the microemulsion system also has the problem of being difficult to maintain stability for a long time
Moreover, the components of plant essential oils are complex, and the formation of microemulsion systems is closely related to the components of plant essential oils. The interfacial tensions of plant essential oil microemulsion systems with different components are greatly different, which makes it difficult to optimize the steady-state system of microemulsified plant essential oils, and the related research progress is slow; The research on microemulsion of plant essential oil and its antibacterial activity has only been reported in individual literature so far
Zhou Hanjun ("Research on Extraction, Nanoemulsion and Antibacterial Activity of Eucalyptus Essential Oil", Master's Thesis, 2016) used a composite surfactant composed of polyoxyethylene castor oil 30 and absolute ethanol to mix with eucalyptus essential oil and distilled water in a certain proportion Eucalyptus essential oil nanoemulsion was prepared, but the preparation method cannot guarantee continuity, the production efficiency is low, and the antibacterial effect of the obtained eucalyptus essential oil nanoemulsion needs to be improved
The preparation method of the microemulsified rice preservative compounded by various plant essential oils has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation method of the present embodiment microemulsion composite plant essential oil rice preservative:

[0049] (1) Using dried lilac flowers, dried rosemary leaves, dried blue eucalyptus leaves, dried thyme leaves, dried cinnamon bark, fresh garlic seeds and fresh litsea cubeba as plant materials, a single plant essential oil was extracted ;

[0050] (2) Compounding of a single plant essential oil: the single plant essential oil is divided into clove essential oil 11.63%, rosemary essential oil 13.95%, blue eucalyptus essential oil 18.60%, thyme essential oil 16.28%, cinnamon essential oil 6.98%, garlic essential oil 9.30%, Litsea 23.26% volume percentage of seed essential oil is mixed to obtain compound plant essential oil;

[0051] (3) Preparation of composite surfactant: Mix Cremophor EL30 solution with a concentration of 45.0 g / L and absolute ethanol at a volume ratio of 1:2 to obtain a composite surfactant;

[0052] (4) Mix and microemulsify the compoun...

Embodiment 2

[0059] The preparation method of the present embodiment microemulsion composite plant essential oil rice preservative:

[0060] (1) Using dried lilac flowers, dried rosemary leaves, dried blue eucalyptus leaves, dried thyme leaves, dried cinnamon bark, fresh garlic seeds and fresh litsea cubeba as plant raw materials, a single plant essential oil was extracted;

[0061] (2) Compounding of a single plant essential oil: the single plant essential oil is divided into clove essential oil 12.28%, rosemary essential oil 14.04%, blue eucalyptus essential oil 17.54%, thyme essential oil 15.79%, cinnamon essential oil 8.77%, garlic essential oil 10.53%, Litsea 21.05% volume percentage of seed essential oil is mixed to obtain compound plant essential oil;

[0062] (3) Preparation of composite surfactant: Mix Cremophor EL30 solution with a concentration of 47.5g / L and absolute ethanol at a volume ratio of 5:11 to obtain a composite surfactant;

[0063] (4) Mix and microemulsify the comp...

Embodiment 3

[0070] The preparation method of the present embodiment microemulsion composite plant essential oil rice preservative:

[0071] (1) Using dried lilac flowers, dried rosemary leaves, dried blue eucalyptus leaves, dried thyme leaves, dried cinnamon bark, fresh garlic seeds and fresh litsea cubeba as plant raw materials, a single plant essential oil was extracted;

[0072](2) Compounding of a single plant essential oil: the single plant essential oil is divided into clove essential oil 12.00%, rosemary essential oil 14.00%, blue eucalyptus essential oil 18.00%, thyme essential oil 16.00%, cinnamon essential oil 8.00%, garlic essential oil 10.00%, Litsea 22.00% volume percentage of seed essential oil is mixed to obtain compound plant essential oil;

[0073] (3) Preparation of composite surfactant: Mix Cremophor EL30 solution with a concentration of 50.0 g / L and absolute ethanol at a volume ratio of 6:11 to obtain a composite surfactant;

[0074] (4) Mix and microemulsify the comp...

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PUM

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Abstract

The invention relates to a preparation method of a micro-emulsified composite plant essential oil rice preservative. The preparation method comprises the following steps: respectively extracting single plant essential oil of lilac, rosemary leaves, eucalyptus globulus leaves, thyme leaves, cinnamon bark, garlic seeds and litsea cubeba; mixing single plant essential oil into composite plant essential oil; preparing a composite surfactant; and mixing the composite plant essential oil with the composite surfactant, and carrying out micro-emulsification. The rice preservative has a broad-spectrumantibacterial effect on fungi causing rice mildewing, and the antibacterial effect of the rice preservative is superior to that of single plant essential oil; the mildew of the rice can be greatly reduced, the fresh-keeping period of the rice is prolonged, and meanwhile, the sensory quality of the rice is not influenced; meanwhile, the sensory quality of the rice is not influenced; the essential oil extraction method disclosed by the invention has a relatively high essential oil yield; cost is low, use is convenient, and pollution is avoided; the method has good effects of improving the safetyof grain storage and promoting the healthy and sustainable development of the plant essential oil industry, and has remarkable economic, social and ecological benefits.

Description

technical field [0001] The invention relates to a preparation method of a plant essential oil rice preservative, in particular to a preparation method of a microemulsified plant essential oil rice preservative. Background technique [0002] rice ( Oryza sativa L.) is one of the most important staple foods in my country, and about 67% of the residents take rice as their staple food. [0003] Rice contains a certain amount of fungi, and with the prolongation of storage time, the fungi multiply and cause rice mildew, Penicillium shima ( Penicillium islandicum ) and Aspergillus flavus ( Aspergillus flavus ) are the main harmful fungi growing in stored rice. It is of great significance to alleviate and inhibit the occurrence of mildew during rice storage, improve its food safety, and reduce the loss of food resources. [0004] Controlling the storage temperature and relative humidity of rice is one of the effective ways to prevent mildew, but controlling the storage temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B9/26
CPCA23B9/26A23V2002/00A23V2250/21
Inventor 龚吉军卢锟龚晟兰王挥唐静
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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