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Method for predicating head rice rate of medium-length brown rice

A kind of technology of polished rice rate and medium-length type, which is applied in the field of accurately predicting the polished rice rate of medium-long rough valleys, which can solve the problems of difficult data repetition, multi-instrument parameters in the steps of polished rice rate, etc., and achieve good repeatability and low cost , the effect of simple operation

Inactive Publication Date: 2018-03-27
CHINA NAT RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing national standards for determining the polished rice rate with many steps and the difficulty of instrument parameter adjustment, which makes it difficult to repeat the data, the present invention proposes a method for predicting the polished rice rate of medium-length brown rice, which has the advantages of low cost, fast It is highly efficient and accurate, and has good application prospects in the rapid screening of early materials for rice quality improvement and on-site rapid identification of brown rice quality.

Method used

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  • Method for predicating head rice rate of medium-length brown rice
  • Method for predicating head rice rate of medium-length brown rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0030] (1) Experimental sample particles: separate out brown rice, clean rice, pick out shriveled rice impurities, etc. according to the quartering method;

[0031] (2) Use a huller to hull the brown rice for regulation, and then adjust the huller according to the hulling situation;

[0032] The grain size of the brown rice for adjustment should be similar to that of the experimental sample. First, use a laboratory huller to hull the brown rice for adjustment, and then adjust the huller to a suitable state according to the hulling situation: 1) There is no brown rice or brown rice in the detached rice hulls. Brown rice; 2) Hulled brown rice has no cortex damage; 3) Hulled brown rice has no rice husk debris.

[0033] (3) Pick out 20 complete and plump brown rice grains at random, measure the appearance quality (grain length, grain width, surface area, diameter, and aspect ratio) with a rice appearance scanning measuring instrument, measure the thickness of rice grains with a ve...

Embodiment 4～6

[0043] (1) Experimental sample particles: separate the brown rice by quartering, clean the grain, and pick out shriveled grain impurities;

[0044] (2) Use a huller to hull the brown rice for adjustment, and then adjust the huller according to the hulling situation; the grain size of the brown rice for adjustment should be similar to that of the experimental sample, and first use the laboratory huller to hull the brown rice for adjustment Hull, and then adjust the huller to a suitable state according to the husking situation: 1) There is no brown rice or brown rice in the detached rice husk; 2) There is no cortex damage in the husked brown rice; 3) There is no rice husk debris in the husked brown rice.

[0045] (3) Randomly pick out 20 complete and plump brown rice grains, measure the appearance quality (grain length, grain width, surface area, diameter and aspect ratio) with a rice appearance scanning tester, measure the thickness of the rice grains with a vernier caliper, and...

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Abstract

The invention relates to the technical field of food detection and provides a method for predicating head rice rate of medium-length brown rice in order to solve a problem of data repeat difficulty due to large step number and instrument parameter adjustment difficulty of national standard head rice rate measurement in the prior art. Through sampling, cleaning and hulling, 20 plump and complete brown rice grains are selected randomly for appearance quality (including grain length, grain width, length-width ratio, superficial area, diameter and grain thickness) measurement and weight measurement. The average shearing rigidity value of the 20 brown rice grains is measured. Stepwise regression predication equations involving the grain shape, grain weight, and the average shearing rigidity value are established separately for the samples whose length-width ratios is between 2.0 and 3.0 or greater than or equal to 3.0 according to the measured length-width ratios, so that the head rice rateof the brown rice can be predicated accurately. The method provided by the invention is simple and quick in implementation, low in cost and high in efficiency, and has a good application prospect inrice quality measurement and breeding early generation screening.

Description

technical field [0001] The invention relates to the technical field of food detection, in particular to a method for accurately predicting the percentage of polished rice of medium and long rough grains. Background technique [0002] The polished rice rate is one of the most important indicators to measure the quality of rough rice. Mechanically dehull the rough grains, weigh the obtained brown rice, then mechanically whiten the brown rice to remove a certain amount of cortex and germ, and weigh the obtained polished rice (GB / T21499). The definition of polished rice rate refers to rice grains whose length reaches more than three-quarters of the average length of the complete rice grains of the sample when the brown rice is ground into the third-grade rice with a processing precision of the national standard (GB1354). The percentage of polished rice refers to the percentage of polished rice in the mass of the sample of clean rough rice (GB1354). During the production proces...

Claims

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Application Information

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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 胡培松唐绍清谢黎虹魏祥进邵高能圣忠华焦桂爱
Owner CHINA NAT RICE RES INST
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