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Method for rapidly determining phytic acid of polished rice flour of rice

A technology for rapid determination and polishing of rice flour, which can be applied to measuring devices, material analysis by optical means, instruments, etc., and can solve the problems of measuring the phytic acid content of rice polished rice flour by near-infrared spectroscopy.

Inactive Publication Date: 2019-07-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on the determination of phytic acid content in polished rice flour using near-infrared spectroscopy

Method used

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  • Method for rapidly determining phytic acid of polished rice flour of rice
  • Method for rapidly determining phytic acid of polished rice flour of rice
  • Method for rapidly determining phytic acid of polished rice flour of rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1, a kind of method for quick determination of polished rice flour phytic acid of rice comprises the following steps:

[0055] 1), according to conventional techniques, first air-dry the mature rice seeds as the sample to be tested (generally air-dry 2d), then carry out shelling, milling, milling and sieving (40 mesh) processing to obtain polished rice flour of rice.

[0056] 2), dry 4g of polished rice flour at 50°C to constant weight (drying time is about 10 hours); put into the circular sample cell of the XDS rapid analyzer produced by FOSS company (the diameter of the sample cell is 35mm, and the depth is 18mm), automatically scan 32 times within the wavelength range of 400-2500nm, with an interval of 2nm;

[0057] In this way, the spectral reflected light values ​​corresponding to the following characteristic wavelengths are obtained:

[0058] 404, 406, 436, 438, 440, 466, 468, 470, 520, 1110, 1112, 1114, 1396, 1398, 1400, 1402, 1714, 1716, 1718, 1720, ...

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Abstract

The invention discloses a method for rapidly determining phytic acid of polished rice flour of rice. The method comprises the steps that ripe rice seeds as samples to be tested are dried, shelled andmilled to acquire polished rice flour of rice; polished rice flour of rice is loaded into an XDS rapid analyzer for automatic scanning in the wavelength range of 400 to 2500 nm; a spectral reflected light value corresponding to a characteristic wavelength is acquired; and the acquired spectral reflected light value is substituted into a formula to acquire the phytic acid content Y in the polishedrice flour of rice. Through the method, the measurement speed is accelerated, and the measurement cost is reduced.

Description

technical field [0001] The invention relates to a method for determining phytic acid in polished rice flour. Background technique [0002] Phytic acid, also known as inositol hexaphosphate, molecular formula C 6 h 18 o 24 , the basic structure is composed of an inositol ring and six phosphate groups, has a strong chelating ability, and can combine with calcium, magnesium, zinc, iron and other metal ions to form a water-insoluble complex. An anti-nutritional Factor, which is also an important indicator for the detection of grain nutritional quality, widely exists in crop grains. Rice is one of the most important food crops in the world, and polished rice is the main part of rice consumed by humans, so it is particularly important to understand the phytic acid content in polished rice. The traditional method of determining phytic acid content is time-consuming, pollutes the environment and requires high technical requirements for operators. Therefore, a simple, fast and e...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3563
CPCG01N21/3563G01N21/359G01N2021/3572
Inventor 金晓丽徐真真石春海
Owner ZHEJIANG UNIV