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Sea weed bromophenol compound as well as preparation method and application thereof

A seaweed bromophenol and compound technology, applied in the field of seaweed bromophenol compounds and their preparation, can solve the problems of reducing food nutritional value, affecting food quality, food fading, etc., achieving significant DPPH free radical scavenging activity, improving product quality, The effect of extending the shelf life

Inactive Publication Date: 2008-05-14
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only that, the oxidation reaction can also lead to food fading, browning, etc., which seriously affects the quality of food and reduces the nutritional value of food

Method used

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  • Sea weed bromophenol compound as well as preparation method and application thereof
  • Sea weed bromophenol compound as well as preparation method and application thereof
  • Sea weed bromophenol compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of bromophenol compound:

[0025] The freshly collected duck feather algae are washed with seawater to remove the gravel and algae attached to the surface, and dried in a cool place for later use. Take 2.5Kg of the dried sample, crush it and extract it three times at room temperature with 7.5 liters of 95% ethanol for three days each time, combine the ethanol extract, concentrate under reduced pressure at a temperature of about 40°C, and recover ethanol to obtain crude ethanol extract things. Add an appropriate amount of distilled water to the crude extract to suspend it in water, then use appropriate amount of petroleum ether, ethyl acetate, and n-butanol to extract three times each, and then concentrate to obtain the corresponding petroleum ether, ethyl acetate, and n-butanol. thing. The ethyl acetate extract (108 g) was subjected to silica gel column (220 g, 200-300 mesh) chromatography with chloroform-methanol at 100:0, 90:1, 85:1, 70:1, 50:...

Embodiment 2

[0030] The difference from Example 1 is:

[0031] The dried and pulverized duckweed was extracted with 50% ethanol four times, each time for three days, the extracts were combined, concentrated under reduced pressure at room temperature to obtain a crude extract, and the ethanol was recovered at the same time. Suspend the crude extract in water, extract three times with petroleum ether, ethyl acetate, and n-butanol successively, and obtain the corresponding petroleum ether, ethyl acetate, and n-butanol extracts after concentration respectively. The ethyl acetate extract was subjected to silica gel column (220 g, 200-300 mesh) chromatography, and gradient elution was performed with ethyl acetate-methanol with a gradient of 100:0 to 0:100, and the eluents were collected respectively. Detected by thin layer chromatography (TLC), the same components were combined; the eluate that was eluted with ethyl acetate-methanol at a gradient of 40:1 to 30:1 was subjected to silica gel colum...

Embodiment 3

[0033] The difference from Example 1 is:

[0034]The bromophenol compound obtained in Example 1 was subjected to a methylation reaction using a methylating reagent (diazomethane) by a conventional method to obtain the corresponding methylated derivative, which also had significant DPPH free radical scavenging activity.

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PUM

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Abstract

The invention relates to the technical field of food additives, in particular to an algae bromophenol compound and the preparation method and purpose. The invention is characterized in that the algae bromophenol compound which is capable of deactivating radials is obtained through the extraction and separation from oceanic red algae symphyocladia latiuscula, and the constitutional formula is shown in Figure (I), wherein the R1 is OH, OCH3 or Br; R2 is OH, OCH3 or Br; R3 is H, CH3 or Ac; R1 or R2 is Br. The algae bromophenol compound from the invention has obvious function on removing DPPH free radical activity for deactivating radials, which can be used as a food addition agent to delay or prevent the oxidation and metamorphosis of edible oil or oil-retaining food caused by the inducement of free radical.

Description

technical field [0001] The invention relates to the field of food additives, in particular to seaweed bromophenol compounds, a preparation method and application thereof. Background technique [0002] Oxidation reactions induced by free radicals can lead to rancidity of foods, especially oily foods. Not only that, the oxidation reaction can also lead to food fading, browning, etc., which seriously affects the quality of food and reduces the nutritional value of food. On the other hand, many oxidation products and intermediate products caused by free radicals are recognized carcinogens, which can seriously damage the organism's biofilm, protein, enzyme and cell function, and directly or indirectly cause many diseases such as cancer, atherosclerosis, diabetes, etc. , neurodegenerative diseases, and aging of the body. [0003] One of the main ways to prevent the oxidative deterioration of edible oils and oily foods commonly used at present is to add antioxidants to prevent or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/68C07C39/367C07C69/21C11B5/00A23D9/06A23L3/3508
Inventor 王斌贵段小娟李晓明
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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