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Method for preparing food preservative by using sand ginger oil extraction waste liquid

A technology of food preservatives and ginger oil, which is applied in the direction of food ingredients containing natural extracts, food ingredients as antioxidants, food ingredients as anti-microbial preservation, etc., can solve problems such as environmental pollution and working environment hazards, and achieve cost reduction , less toxic and side effects on the human body, and the effect of suitable aroma

Pending Publication Date: 2019-09-20
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

And in the production process of synthetic preservatives, toxic gas will be produced, which is harmful to the working environment of people and easy to cause environmental pollution

Method used

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  • Method for preparing food preservative by using sand ginger oil extraction waste liquid
  • Method for preparing food preservative by using sand ginger oil extraction waste liquid
  • Method for preparing food preservative by using sand ginger oil extraction waste liquid

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Embodiment Construction

[0033] The present invention utilizes ginger oil to extract the method for food preservative prepared from waste liquid, comprises the following steps:

[0034] a. extracting trans-ethyl p-methoxycinnamate and cis-ethyl p-methoxycinnamate mixture from sand ginger oil extraction waste liquid, comprises the following steps:

[0035] (1) Collect the water phase distillate, the water phase distillate is the water phase distillate flowing out from the oil-water separator of the sand ginger oil extraction tank, or the brownish yellow turbid waste liquid in the sand ginger oil extraction tank The water-phase distillate collected after redistillation; wherein the water-phase distillate flowing out of the oil-water separator of the ginger oil extraction tank is a colorless transparent liquid, which is the remaining distilled water after the ginger oil is separated, and dissolved in this water There are some volatile components of sand ginger, and its main components are trans-ethyl p-m...

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Abstract

The invention discloses a method for preparing a food preservative by using sand ginger oil extraction waste liquid. The method comprises the following steps: taking aqueous distillate flowing out of an oil-water separator of a sand ginger oil extraction tank or aqueous distillate collected after redistilling brown-yellow turbid waste liquid in the extraction tank, and separating out a mixture of trans-ethyl p-methoxycinnamate and cis-ethyl p-methoxycinnamate in the aqueous distillate by adding sodium chloride or potassium chloride; adding an organic solvent for extraction, and distilling the organic solvent under reduced pressure to obtain brown-yellow oily liquid; freezing the brown-yellow oily liquid; separating out and crystallizing; and rapidly filtering to obtain a mixture of trans-ethyl p-methoxycinnamate and cis-ethyl p-methoxycinnamate. The mixture has antibacterial activity on aspergillus niger, aspergillus flavus and penicillium citrinum, has a scavenging effect on DPPH.free radical and ABTS+.free radicals, has suitable fragrance and can serve as the food preservative. The method is simple to operate, environment-friendly, low in cost and convenient to popularize and use.

Description

technical field [0001] The invention relates to a method for preparing a preservative, in particular to a method for preparing a food preservative. Background technique [0002] Sand ginger (Kaempferia galangal L.) is the dried rhizome of Zingiber officinale plant Kaempferia kaempferia, mainly produced in Guangdong, Guangxi and other provinces and regions. It is an important medicinal and edible plant. disease, asthma, cough and skin diseases. Because sand ginger has a special aromatic smell and acrid taste, it is also widely used as non-staple food and flavoring agent in addition to medicinal purposes. The rhizome of sand ginger is rich in essential oils and is widely used in medicine, cosmetics and food industries. [0003] The production of sand ginger essential oil mostly adopts the traditional steam distillation process. In the steam distillation process, only the oil phase part of the distillate is generally collected as the essential oil product. The main component ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/3517C07C67/48C07C69/734
CPCA23L3/3517A23V2002/00C07B2200/09C07C67/48A23V2200/02A23V2200/10A23V2250/21A23V2300/14C07C69/734
Inventor 田玉红董菲郝文凤
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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