Method for sorting potato products and sorting apparatus for potato products

A potato and product technology, used in sorting, material inspection, testing food, etc., can solve problems such as potato product defects that cannot be detected

Active Publication Date: 2012-04-18
BEST 2
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Problems solved by technology

[0005] Furthermore, it was found that certain defects in potato product

Method used

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  • Method for sorting potato products and sorting apparatus for potato products
  • Method for sorting potato products and sorting apparatus for potato products
  • Method for sorting potato products and sorting apparatus for potato products

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Embodiment Construction

[0028] In the method according to the invention, the potato products are sorted based on fluorescence. It was found that when UV light with a wavelength of 350nm-450nm is shone on the potato product, a potato product without any defects will emit light as a result of fluorescence with a wavelength mainly in the wavelength band of 460nm-600nm. Defects present in the potato product or odd products in the product stream do not have said fluorescence. Defects are usually visually observable and include, for example, bud eyes, side shoots or buds, rot, abrasions, internal sugars, brown vascular rings, and the like.

[0029] According to the invention, a product stream of potato products moves through a detection zone where the products are illuminated by UV light. The intensity of light emitted by the product as a result of fluorescence is detected in the detection band from 460nm to 600nm. When the observed intensity in the detection zone is lower than a specific preset value fo...

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Abstract

The invention concerns a method and a sorting apparatus for sorting potato products that are moved in a product flow through a detection zone, whereby irregular products are detected in the product flow and are separated from the product flow, characterised in that a light beam having a wavelength of in between 350 and 450 nm is directed towards said products in said detection zone and wherein the intensity of the light that is irradiated by the products is detected in a detection band from 460 nm to 600 nm, wherein a product is qualified as an irregular product and is separated from the product flow when said intensity is below a predetermined value. Further, the invention also concerns a method and a device for detecting the presence of solanine in potato products by means of fluorescence.

Description

technical field [0001] The invention relates to a method for sorting potato products moving through a detection zone in a product flow, whereby unwanted products are detected in the product flow and separated from the product flow. Background technique [0002] According to the current state of the art, potato products are sorted by irradiating the potato products with one or several laser beams and subsequently detecting the light scattered or directly reflected by these products. Based on this directly reflected light or scattered light, any defect in the product or the presence of a weird product is confirmed. Such sorting systems are described, for example, in documents US 4,723,659 and US 4,634,881. [0003] However, these known sorting systems for potato products are disadvantageous since laser beams with different wavelengths have to be provided for different defects one wishes to find in the product or for odd products one wishes to detect. Known sorting machines t...

Claims

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Application Information

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IPC IPC(8): B07C5/342
CPCB07C5/342B07C5/3427G01N33/02B07C5/368
Inventor P·伯格曼斯C·费维兹J·斯皮布鲁克
Owner BEST 2
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