CN-122004290-A - Antioxidant composition special for rice bran oil and preparation method and application thereof

Abstract

The invention discloses an antioxidant composition special for rice bran oil, and a preparation method and application thereof, and relates to the technical field of grease antioxidant. The antioxidant composition special for rice bran oil comprises ferulic acid ester, ascorbyl palmitate, VE derivatives and a compound auxiliary material, wherein the VE derivatives are selected from VE acetate and/or VE succinate, and the compound auxiliary material is selected from citric acid and/or EDTA disodium. According to the antioxidant composition special for rice bran oil, disclosed by the invention, the complex formulation of ferulic acid ester, ascorbyl palmitate and VE derivative is adopted to specifically solve the problem that the oxidation pain point of rice bran oil is high, wherein the chelation rate of metal ions in the rice bran oil is more than 85%, and the scavenging rate of peroxy free radicals is up to 93%, so that the normal-temperature shelf life of the rice bran oil is prolonged to more than 360 days from 60 days.

Inventors

• TU YUE
• ZHANG WENHAN
• LIU JIANPING
• LIU KAN
• GUO XIONGCHANG
• HU LINFANG
• WANG RUXIA
• Cai lichuang

Assignees

• 高安市清河油脂有限公司
• 江西省科学院生物制造研究所

Dates

Publication Date

20260512

Application Date

20260402

Claims (10)

1. 1. The antioxidant composition special for rice bran oil is characterized by comprising ferulic acid ester, ascorbyl palmitate, VE derivatives and a compound auxiliary material, wherein the VE derivatives are selected from VE acetate and/or VE succinate, and the compound auxiliary material is selected from citric acid and/or EDTA disodium.
2. 2. The special antioxidant composition for rice bran oil according to claim 1, which is characterized by comprising, by mass, 80-100 parts of ferulic acid ester, 180-250 parts of ascorbyl palmitate, 90-170 parts of VE derivatives and 35-52 parts of compound auxiliary materials.
3. 3. The antioxidant composition special for rice bran oil according to claim 1, wherein the mass of the composite auxiliary material is 8-12% of the total mass of ferulic acid ester, ascorbyl palmitate and VE derivative.
4. 4. The antioxidant composition special for rice bran oil according to claim 1, wherein the VE derivative is selected from VE acetate and VE succinate, and the mass ratio of VE acetate to VE succinate is 1 (0.8-1.2).
5. 5. The antioxidant composition special for rice bran oil according to claim 1, wherein the composite auxiliary material is selected from citric acid and disodium EDTA, and the mass ratio of the citric acid to the disodium EDTA is (1.5-2.5): 1.
6. 6. The antioxidant composition special for rice bran oil according to claim 1, wherein the mass ratio of ferulic acid ester, ascorbyl palmitate to VE derivative is 1 (1.8-2.2) (1.2-1.6).
7. 7. The antioxidant composition for rice bran oil according to claim 6 wherein the mass ratio of ferulic acid ester, ascorbyl palmitate to VE derivative is 1:2:1.5.
8. 8. The antioxidant composition special for rice bran oil according to claim 1, wherein the ferulic acid ester is octyl ferulate or propyl ferulate.
9. 9. A method for preparing the antioxidant composition special for rice bran oil according to any one of claims 1 to 8, comprising the steps of: (1) Adding ferulic acid ester, ascorbyl palmitate and VE derivative into a double-layer stirring container protected by nitrogen, and introducing 30 ℃ circulating water into the outer layer of the double-layer stirring container to control the temperature; (2) Adding composite auxiliary materials into a double-layer stirring container, heating to 50 ℃, stirring at 250r/min for 22 minutes until the materials are completely dissolved, and forming uniform and transparent liquid; (3) And (5) maintaining nitrogen atmosphere, and cooling to 26 ℃ to obtain the antioxidant composition special for rice bran oil.
10. 10. Use of an antioxidant composition according to any one of claims 1-8 for the preparation of rice bran oil.

Description

Antioxidant composition special for rice bran oil and preparation method and application thereof Technical Field The invention relates to the technical field of grease antioxidation, in particular to a special antioxidation composition for rice bran oil, a preparation method and application thereof. Background The rice bran oil is an edible oil with extremely high nutritive value, is rich in linoleic acid, alpha-linolenic acid and phytosterol, but is extremely poor in oxidation stability due to the fact that metal ions such as iron, copper and the like remained in rice bran are easily introduced in the processing process due to the fact that the content of unsaturated fatty acid is high, the shelf life of the rice bran oil is only 30-60 days during normal-temperature storage, and aldehyde harmful substances are easily generated during high-temperature cooking, so that commercial application of the rice bran oil is severely limited. The existing rice bran oil antioxidation scheme has obvious defects: the single antioxidant has poor dispersibility in rice bran oil and is easy to be catalyzed and oxidized by metal ions when VE (such as alpha-tocopherol) is singly used, and the retention rate of the vitamin E in 3 months is less than 50 percent; The binary compounding of ferulic acid ester and AP can improve the antioxidation efficiency, but can not inhibit the catalysis of metal ions, and is easy to degrade in a high-temperature adding link (60-70 ℃) after refining rice bran oil, and the activity retention rate is only 65-75%; the application of the derivative is limited in that VE derivatives (such as VE acetate) in the prior art are singly used, and the antioxidant cycle of the VE derivatives, which does not form synergistic action with ferulic acid ester and AP in rice bran oil, is only 90-120 days, and the commercial storage requirement can not be met. Therefore, developing a high-efficiency synergistic antioxidant composition which can adapt to the characteristics of high unsaturation, high metal ion and high temperature addition of rice bran oil and is based on ferulic acid ester, ascorbyl palmitate and VE derivatives is a key to solving the problem of oxidization of rice bran oil. Disclosure of Invention The invention aims to overcome the defects of the existing rice bran oil antioxidation scheme, and provides an antioxidation composition special for rice bran oil, a preparation method and application thereof, wherein three pain points of rice bran oil oxidization are specifically solved through the synergistic effect of ferulic acid ester, AP and VE derivatives, namely, the rice bran oil is easy to oxidize by high-unsaturated fatty acid, the active ingredients are degraded due to metal ion catalytic oxidation and high-temperature addition, so that the double promotion of the shelf life and the processing tolerance of the rice bran oil is realized. The method specifically comprises the following technical scheme: According to the first aspect, the special antioxidant composition for rice bran oil comprises ferulic acid ester, ascorbyl Palmitate (AP), VE derivatives and compound auxiliary materials, wherein the VE derivatives are selected from VE acetate (vitamin E acetate) and/or VE succinate (vitamin E succinate), and the compound auxiliary materials are selected from citric acid and/or EDTA disodium (disodium ethylenediamine tetraacetate). Among them, the combination of ferulic acid ester, AP and VE derivatives has the advantage of synergistic mechanism upgrading (adaptation to rice bran oil properties): 1. The targeted scavenging reinforcement comprises the steps that ferulic acid ester preferentially scavenges hydroxyl free radicals (alpha OH) generated by metal ion catalysis in rice bran oil, oxidation chain reaction of the metal ion-free radicals is blocked from the source, VE derivatives anchor the oil phase core of the rice bran oil, efficiently scavenge peroxy free radicals (ROO and alpha linolenic acid) generated by oxidation of linoleic acid and alpha linolenic acid, the ester structure is more resistant to high temperature than VE, the activity retention rate reaches more than 90% when the VE is added at 60-70 ℃, AP acts on the inner wall (oil-water interface) of a storage container of the rice bran oil, singlet oxygen (1O2) is scavenged, and trace metal ions are assisted in chelation, so that the chelation blind area of traditional auxiliary materials is made up. 2. Multistage regeneration adaptation, namely forming a reverse regeneration chain of 'VE derivative → AP → ferulic acid ester', wherein the AP reduces and oxidizes the inactivated VE derivative free radical (TOO; TOO) through an alkylene glycol structure to restore the activity of the VE derivative free radical, the ferulic acid ester releases phenolic hydroxyl hydrogen, the inactivated dehydroascorbyl palmitate (DAP) is reduced, and finally the ferulic acid ester free radical (F; TOO) is stabilized through forming a hydrogen bond