Oxidation degradation composite catalyst and use thereof in preparing essence using carotenoid

A technology of composite catalyst and oxidation catalyst, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, essential oil/fragrance, etc. It can solve the problems of difficult industrialization, high reaction temperature, and complex oxidation degradation equipment And other issues

Inactive Publication Date: 2011-10-05
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the shortcomings of complex oxidative degradation equipment for carotenoids, high reaction temperature, and difficulty in industrialization in the prior art, the present invention provides a composite catalyst for oxidative degradation, which can make carotenoids oxidize synchronously at a simple device and at a lower temperature Degradation reaction to prepare multi-component fragrance

Method used

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  • Oxidation degradation composite catalyst and use thereof in preparing essence using carotenoid
  • Oxidation degradation composite catalyst and use thereof in preparing essence using carotenoid
  • Oxidation degradation composite catalyst and use thereof in preparing essence using carotenoid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 4.1g β-carotene, 42mg oxidative degradation composite catalyst, where the oxidative degradation composite catalyst is compounded by MgO and kaolin in a ratio of 1:1 by mass, and 43.2g silicone oil, and put them into a 100mL four-necked flask Among them, the silicone oil here can also be replaced by methyl silicone oil, dimethyl silicone oil or phenyl silicone oil, and the effect is the same. The four ports of the reaction bottle are respectively installed with nitrogen inlet pipe, air inlet pipe, thermometer, distillation head, connected to the condenser pipe and tail pipe, and about 30mL of absorption liquid is added to the 100mL round-bottomed flask, connected to the tail pipe and placed in a low-temperature constant temperature reaction bath , connect the outlet of the tailpipe to the buffer bottle, and fill a small amount of silicone oil in the bottle. Turn on the air and nitrogen, respectively check whether the gas path is smooth through the buffer bottle, an...

Embodiment 2～7

[0040] Embodiments 2 to 7 are carried out on the basis of Example 1, after changing the type of oxidative degradation composite catalyst. 1, the details of the added oxidative degradation composite catalyst and the specific results of the main product mass fraction (%) are compared in Table 2.

[0041] Table 2 Catalyst use and result comparison in Examples 1 to 7

[0042]

[0043] Note: 1#~7# represent several main components in the product, according to GC retention time (R t ) gradually increasing sequence is: 1#: R t 3.94min, acetol; 2#: R t 6.70min, 2,2-dimethylcyclopentanone; 3#: R t 25.28min, 2,6,6-trimethyl-1-cyclohexene-1-carbaldehyde (β-cyclocitral); 4#: R t 27.64min, 1,4,8-trimethyl-1,7-nonadien-4-ol; 5#: R t 34.90min, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one (β-ionone); 6#: R t 36.50min, 5,6,7,7a-tetrahydro-4,4,7a-trimethyl-2(4H)-benfuran (dihydroactidolactone); 7#: R t 36.72 min, 1,5,9,9-Tetramethyl-2-methylidene-twist[3.5]nonene-5.

[0044] A...

Embodiment 8～11

[0047] Embodiments 8 to 11 are the implementation results after changing the mass ratio between the oxidation catalyst and the degradation catalyst in the oxidation-degradation composite catalyst on the basis of embodiment 1. The rest are the same as in embodiment 1, and the specific operation method is also the same as in embodiment 1. 1, the details of the added catalyst and the specific results of the product are compared in Table 3.

[0048] Table 3 Catalyst use and result comparison in Examples 1, 8-11

[0049]

[0050] Note: 1#~7# represent several main components in the product, and the meanings are the same as those in Table 2.

[0051] As can be seen from the results in Table 3, changing the compounding ratio of the composite catalyst has no effect on the types of main components in the product. Alcohols, ketones, esters, and olefins account for about 60% of the total product mass, but the difference between the components The ratio varies with different catalyst ...

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Abstract

The present invention discloses a composite catalyst for oxidative degradation and the application thereof to the preparation of spice with carotenoid. The composite catalyst for oxidative degradation is prepared with an oxidative catalyst and a natural mineral degradation catalyst according to the proportion of 1:99 to 99:1. The oxidative catalyst is one of metal oxides and metal salts or the mixture with arbitrary proportion of more than one of metal oxides and metal salts. The oxidative catalyst can be the mixture with arbitrary proportion of one or two of CaO, MgO, Fe2O3, Al2O3, Na2CO3 and CaCO3.The natural mineral degradation catalyst is the mixture with arbitrary proportion of one or more than one of activated carclazyte, diatomite and kaolin. The application of the composite catalyst for oxidative degradation to the preparation of spice with carotenoid comprises the steps as follows. The carotenoid and the composite catalyst for oxidative degradation with the mass being 0.1% to 10% of carotenoid are added into inert medium and react for 3 to 24 hours under 100 to 200 DEG C to obtain multi-component oxidative degradation product that can be used as spice. The inert medium is silicone oil, methyl-silicone oil, dimethyl silicon oil or phenyl silicone oil.

Description

Technical field: [0001] The invention relates to a composite catalyst, in particular to an oxidative degradation composite catalyst used in the reaction of oxidative degradation of carotenoids to prepare spices. Background technique: [0002] Carotenoids mainly include carotene, lutein, lycopene and so on. Carotene is a class of tetraterpenoids with various isomers, such as α-carotene, β-carotene, γ-carotene and so on. Beta-carotene is the most common form of carotene products. Carotene performs the physiological function of vitamin A in the body and can be converted into vitamin A, known as provitamin A. α-, β- and γ-carotene often coexist in many plants, of which β-carotene has the highest content, generally reddish-brown crystals, melting point 181 ° C, soluble in ether, acetone, benzene, petroleum ether. [0003] Carotene is often used as food pigment, health food, and sunscreen cosmetic ingredients, and can also be used as a raw material for the manufacture of vitami...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J23/02B01J27/232B01J21/16C11B9/00
Inventor 赵振东张杰王婧李冬梅毕良武古研
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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