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A kind of method for degrading patulin in fruit juice

A technology of patulin and fruit juice, which is applied in the field of liquid food detoxification treatment, can solve problems such as unsatisfactory effects, achieve the effects of shortening the processing time, reducing enzyme activity, and improving quality

Active Publication Date: 2022-07-12
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of the existing ultraviolet treatment technology on degrading PAT is not very satisfactory. In addition, in the production process of apple juice, the degree of browning of juice is a major factor that reduces the quality of apple juice, and ultraviolet treatment cannot effectively curb this disadvantage. Variety

Method used

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  • A kind of method for degrading patulin in fruit juice
  • A kind of method for degrading patulin in fruit juice
  • A kind of method for degrading patulin in fruit juice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: TiO 2 Effects of photocatalysis on the quality of simulated juice

[0033] 1. Processing method

[0034] (1) The fruit juice is placed in the reaction device, and the experiment adopts figure 1 installation;

[0035] (2) Adding nano-TiO to the reaction device 2 Powder, get TiO 2 mixed suspension with fruit juice;

[0036] (3) control the temperature of the mixed suspension, directly irradiate with ultraviolet light, and keep stirring during the irradiation process;

[0037] (4) Filter the photocatalytically degraded mixed suspension with a filter to remove powder TiO 2 .

[0038] The volume of the solution in each experiment remained unchanged at 250 mL, the initial patulin content was 500 μg / kg, and the entire achievable irradiation length of the UV light source was 17.5 cm. In this experiment, the maximum effective irradiation length was 8 cm, and the UV power was 28 w. The diameter of the quartz tube of the jacket is 3cm, and the container is a bea...

Embodiment 2

[0060] Example 2: TiO 2 The effect of photocatalysis on the quality of real juice

[0061] 1. Preparation of experimental raw materials and juice

[0062] Red Fuji apples (originating in Baishui County, Shaanxi, China) were purchased from Jingdong Supermarket. They were of the same size, ruddy in color, intact, free from pests and diseases, and free from mechanical damage; they were immediately shipped back to the laboratory.

[0063] Take intact apples, clean them, remove the core, cut into pieces, scald some to protect the color, and squeeze some juice, and add L-ascorbic acid in proportion (0.5g / kg) to protect the color (within the range allowed by the national standard), Freeze at -20°C for subsequent processing.

[0064] 2. TiO 2 The effect of photocatalysis on the quality of real juice

[0065] 2.1 Spike recovery

[0066] Measure 5mL of sample into a 50mL centrifuge tube, add 10mL of ethyl acetate, ultrasonically extract for 10min, centrifuge at 4000r / min for 5min a...

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Abstract

The invention provides a method for degrading patulin in fruit juice. The method comprises the following steps: (1) placing the fruit juice in a reaction device; (2) adding nano-TiO into the reaction device 2 Powder, get mixed suspension, control TiO 2 The concentration is 0.9-1.5g / kg; (3) control the temperature of the mixed suspension to be 20-30 ℃, directly irradiate with ultraviolet light for 40-120min, keep stirring during the irradiation process; (4) will be degraded by photocatalysis The mixed suspension is filtered with a filter to remove the TiO 2 . The present invention by introducing TiO 2 This non-toxic and harmless trace ingredient, using its UV-excited physical properties and UV treatment technology to synergize, not only greatly optimizes the advantages of UV treatment, but also has great benefits to the senses of juice, thus greatly improving the to improve the quality and quality of products.

Description

technical field [0001] The invention relates to the technical field of detoxification treatment of liquid food, in particular to a method for photocatalytic degradation of patulin in fruit juice. Background technique [0002] Patulin (patulin, PAT), also known as patulin, is a toxic fungal metabolite. According to research, the fungi that can produce patulin include Penicillium expansileum, Penicillium patulin, Penicillium coryneformis, Penicillium soil, Penicillium New Zealand, Penicillium lithodes, Penicillium granulosa, Penicillium merlini, Penicillium arcuates, There are 16 species in 3 genera, including Penicillium chrysogenum, Penicillium laurelii, Aspergillus clavata, Aspergillus megaterium, Aspergillus terreus, and Epiphyllum sp. Patulin mainly contaminates fruits and their products, especially apples, hawthorn, pears, tomatoes, apple juice and hawthorn slices. Toxicological tests have shown that patulin has toxicological effects on fertility, carcinogenesis and im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L2/70A23L2/72
Inventor 彭帮柱李围围潘思轶
Owner HUAZHONG AGRI UNIV
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