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Novel bamboo shoot superfine powder adsorbent and preparation method thereof

A technology of ultrafine powder and adsorbent, which is applied in the field of food processing, can solve problems such as human injury, and achieve the effects of preventing metal poisoning, increasing specific surface area and porosity, and good dispersibility

Active Publication Date: 2014-09-10
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although copper and zinc are essential trace elements for the human body, excessive ingestion can also cause harm to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 Adopt the following steps to implement the present invention:

[0035] (1) Selection and cleaning of raw materials: select fresh moso bamboo shoots with no rot, no disease and good shape, and clean them;

[0036] (2) Cutting into pieces: Cut the washed bamboo shoots into small pieces of 2cm×1cm×1cm, and lay them flat on the tray for later use;

[0037] (3) Drying: dry under hot air at 60°C for 15 hours, and measure the moisture content every hour after 15 hours. The measured moisture content is 9-10%, and dried bamboo shoots are obtained;

[0038] (4) Coarsely pulverize and sieve: take out the dried bamboo shoots and cool them down for a while, then coarsely pulverize them with an ordinary pulverizer, pass through a 20-mesh sieve, and obtain coarse bamboo shoot powder with an average particle size of 840 μm;

[0039] (5) Enzyme activation treatment: add cellulase 45 U / g to the coarse powder of bamboo shoots, adjust pH=4.8 with citric acid buffer, swell at ...

Embodiment 2

[0045] Embodiment 2 Adopt the following steps to implement the present invention:

[0046] (1) Selection and cleaning of raw materials: select fresh thunder bamboos that are free from rot, disease, and in good shape, and clean them;

[0047] (2) Cutting into pieces: Cut the washed bamboo shoots into small pieces of 3cm×1cm×1cm, and lay them flat on the tray for later use;

[0048] (3) Drying: dry under hot air at 55°C for 10 hours, and measure the moisture content after 10 hours to be 25% to obtain dried bamboo shoots;

[0049] (4) Coarsely pulverize and sieve: take out the dried bamboo shoots and cool them down slightly, then coarsely pulverize them with an ordinary pulverizer, and pass through a 60-mesh sieve to obtain coarse bamboo shoot powder with an average particle size of 245 μm;

[0050] (5) Enzyme activation treatment: first add xylanase 60 U / g to the coarse powder of bamboo shoots, adjust pH=5.0 with citric acid buffer, swell at 80°C for 30 min, cool to 50°C, and a...

Embodiment 3

[0056] Embodiment 3 Adopt the following steps to implement the present invention:

[0057] (1) Selection and cleaning of raw materials: select fresh green bamboo shoots and fresh hemp bamboo shoots with no rot, no disease and good shape, and clean them;

[0058] (2) Cutting into pieces: cut the washed bamboo shoots into small pieces of 2cm×2cm×2cm, and put them on a tray for later use;

[0059] (3) Drying: dry under hot air at 50°C for 15 hours, measure the moisture content every hour after 15 hours, continue drying for 5 hours, and measure the moisture content to 12%, to obtain dried bamboo shoots;

[0060] (4) Coarsely pulverize and sieve: take out the dried bamboo shoots and cool them down slightly, then coarsely pulverize them with an ordinary pulverizer, pass through a 40-mesh sieve, and obtain coarse bamboo shoot powder with an average particle size of 350 μm;

[0061] (5) Enzyme activation treatment: add xylanase 60 U / g and cellulase 45 U / g to bamboo shoot meal at the ...

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Abstract

The invention discloses a bamboo shoot superfine powder adsorbent and a preparation method thereof. The bamboo shoot superfine powder adsorbent disclosed by the invention is prepared by taking bamboo shoots as raw materials. The preparation method comprises the following steps: (1) selecting the raw materials and washing; (2) chopping; (3) drying; (4) roughly crushing and sieving; (5) carrying out enzyme activating treatment; (6) drying; and (7) carrying out superfine crushing and sieving. According to the bamboo shoot superfine powder adsorbent, celluloses and hemicelluloses in the bamboo shoots are degraded by the enzyme activating treatment so that the bamboo shoots can be converted into soluble micro-molecular dietary fibers; the whole structure is bulked and porous; a superfine crushing technology is adopted so that the specific surface area of the bamboo shoot dietary fibers is enlarged and the adsorption capacity of the bamboo shoot dietary fibers is enhanced; the superfine bamboo shoot powder adsorbent is added into foods and plays roles in helping adsorption of residual heavy metal in a human body, and avoiding the metal poisoning.

Description

technical field [0001] The invention relates to an adsorbent made from food materials, in particular to a bamboo shoot ultrafine powder adsorbent and a preparation method thereof, belonging to the technical field of food processing. Background technique [0002] Heavy metals refer to metal elements with a density greater than 6.0. According to this definition, in addition to lead, arsenic, mercury, chromium, and cadmium (Pb , As , Hg , Cr , Cd) listed in food hygiene standards, copper (Cu), zinc ( Common elements such as Zn), manganese (Mn), and nickel (Ni) are also heavy metals. Although they are also essential elements for life activities, they can also cause harm when organisms ingest or are exposed to such elements too much. Among the unqualified foods announced by the AQSIQ in 2014, heavy metals exceeded the standard in wine, milk powder, honey, etc. The main heavy metals are lead (Pb), cadmium (Cd), copper (Cu), zinc (Zn) Wait. Heavy metal pollution is persistent, co...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30A23L1/015A23L5/20
Inventor 林丽静朱怡婷黄晓兵李积华王一承
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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