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A method for preparing pectin co-production synephrine from citrus fruit processing residue

A technology for processing residues and citrus, which is applied in the field of preparing pectin and co-producing synephrine, and achieves the effects of simple extraction process, easy quality and improved benefit.

Inactive Publication Date: 2016-11-16
ANHUI AGRICULTURAL UNIVERSITY
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  • Description
  • Claims
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Problems solved by technology

[0008] The object of the present invention is to provide a kind of method that prepares pectin co-production synephrine from the processing residue of citrus fruits, aiming at the current technology of extracting pectin and synephrine from the processing residue of citrus fruits Existing problems, propose a method that can simultaneously extract pectin and synephrine

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  • A method for preparing pectin co-production synephrine from citrus fruit processing residue

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Embodiment 1

[0028] After the citrus fruit processing residues are pretreated to eliminate enzymes and impurities, the pretreated raw materials are obtained for later use; to obtain 50g of pretreated raw materials, add distilled water according to the ratio of material to liquid 1:25, and then add 200ml of 95% ethanol , heated to 90° C., extracted for 1.5 h, and then centrifuged with a centrifuge at a speed of 4200 r / min for 20 min, and the obtained centrifugate became filtrate I. The filter residue is crushed into 60 mesh with a plant grinder, and distilled water is added according to the material-liquid ratio of 1:20-30, and the pH is adjusted to 1.9 with hydrochloric acid, and it is left to stand for 3 hours, and then centrifuged with a centrifuge at 4200r / min for 20 minutes, and the centrifuged upper The clear filtrate was concentrated in vacuo, added 5 times the volume of 95% alcohol, and left for 3 hours to produce a large amount of precipitation. The above static liquid was centrifug...

Embodiment 2

[0030] A method for preparing pectin co-production synephrine from citrus fruit processing residues, comprising the following steps:

[0031] (1) Rinse citrus fruit processing residues in warm water at 55°C for 3 times, then heat at 95°C for 20 minutes to inactivate pectinase; then rinse with warm water at 55°C for 3 times to further wash away impurities, dry dry, crush to 80 mesh, and obtain the pretreated raw material for subsequent use.

[0032] (2) Add distilled water and 5 times the amount of ethanol with a concentration of 95% to the pretreated raw material according to the ratio of material to liquid 1:30, heat to 60°C, extract for 2 hours, and obtain the leaching extract;

[0033] (3) centrifuging the above-mentioned leaching extract to obtain filtrate I and filter residue;

[0034] (4) Dry the filter residue obtained in the above steps, crush it to 60 mesh, add distilled water according to the ratio of material to liquid 1: 30, adjust the pH to 2.4 with hydrochloric ...

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Abstract

The invention provides a method for preparing pectin co-production synephrine by utilizing the processing residue of citrus fruits. The extract is centrifuged to obtain filtrate I and filter residue; the resulting filter residue is soaked in water to adjust the pH with hydrochloric acid, centrifuged, and the supernatant filtrate obtained by centrifugation is concentrated in vacuum (recovering the solvent), and then 95% alcohol is used to promote precipitation: stand still and centrifuged to obtain filtrate II and the precipitate filter residue; vacuum-dry the obtained precipitate filter residue to obtain the finished product of pectin; mix the above obtained filtrate II and filtrate I, concentrate in vacuum, remove ethanol in the extract, and then vacuum dry to obtain the finished product of synephrine. Based on the characteristics that synephrine is soluble in ethanol and pectin is insoluble in ethanol, the present invention designs a new process route. This method can simultaneously obtain synephrine and pectin two products, guarantee simultaneously, and improve pectin and synephrine The yield of the forest is high, the equipment is simple, easy to operate, the product maintains the characteristics of natural products, and the quality is high.

Description

technical field [0001] The invention relates to the fields of food industry processing and primary product processing of natural medicines, in particular to a method for preparing pectin co-production synephrine from citrus fruit processing residues. Background technique [0002] Citrus fruit processing residues - the peel contains pectin, pigments, synephrine, essential oils and other active ingredients. In recent years, the comprehensive utilization of peel and pomace has not attracted enough attention. Most of the citrus peel and other residues produced in the citrus processing process are discarded due to mildew and deterioration, which causes a great waste of resources and pollutes the environment. [0003] Synephrine was first synthesized by German scientists in 1927 ， , is distributed in the leaves and dry young fruits of Rutaceae plant lime and cactus plants in nature, and is also the main active ingredient of Chinese medicinal materials green peel, tangerine peel, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/06C07C215/60C07C213/10
Inventor 丁之恩李菁楠张继刚丁昱徐浩方洁
Owner ANHUI AGRICULTURAL UNIVERSITY
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