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What is the application of UV-Vis spectrophotometer in food inspection?
Release time:
2022-01-10 13:38
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UV Vis Spectrophotometer is an instrument that can measure the absorption of a sample for a specific wavelength of light. In food testing, it is widely used to analyze and detect the content of certain chemical components or substances in food. The specific application of
UV-Vis spectrophotometer in food inspection is as follows:
1. Detection of pigment in food
The color of food is determined by the pigment present in it. The content of different kinds of pigments in food can be quantitatively measured by using. Commonly used food colorings include red, yellow, green and blue colors, which are usually derived from natural plants or artificially added colorants.
2. Measuring nutrients in food
can also be used to measure nutrients in food, such as vitamins, minerals and proteins. Among them, fat-soluble vitamins such as vitamins A, D and E can be absorbed in the ultraviolet region, while minerals and proteins usually absorb in the ultraviolet region and the visible region. By measuring the degree of light absorption of a food sample for a specific wavelength, the content of different nutrients contained therein can be obtained.
3. Detecting additives in food
When certain chemicals or synthetic materials are added to food, such as sweeteners, preservatives, antioxidants, etc., these additives may affect human health. It can be used to detect the presence of these additives in food and measure their concentration. For example, the absorption peaks of additives such as sodium benzoate and nitrate for ultraviolet light can be detected by ultraviolet spectroscopy.
4. Analysis of contaminants in food
Various contaminants may exist in food, such as heavy metals, pesticide residues, bacteria, etc. These pollutants will bring harm to human health. It can be used to measure the content of contaminants in food samples to determine whether food is safe. For example, ultraviolet spectroscopy can be used to detect the presence of pesticide residues in food, or fluorescence spectroscopy can be used to detect bacteria in food samples.
In conclusion, the UV-Vis spectrophotometer has a wide range of applications in the field of food inspection. It can help scientists and food industry experts better understand the chemical composition and substance content of food, so as to protect public health and food safety.
UV-Vis spectrophotometer in food inspection is as follows:
1. Detection of pigment in food
The color of food is determined by the pigment present in it. The content of different kinds of pigments in food can be quantitatively measured by using. Commonly used food colorings include red, yellow, green and blue colors, which are usually derived from natural plants or artificially added colorants.
2. Measuring nutrients in food
can also be used to measure nutrients in food, such as vitamins, minerals and proteins. Among them, fat-soluble vitamins such as vitamins A, D and E can be absorbed in the ultraviolet region, while minerals and proteins usually absorb in the ultraviolet region and the visible region. By measuring the degree of light absorption of a food sample for a specific wavelength, the content of different nutrients contained therein can be obtained.
3. Detecting additives in food
When certain chemicals or synthetic materials are added to food, such as sweeteners, preservatives, antioxidants, etc., these additives may affect human health. It can be used to detect the presence of these additives in food and measure their concentration. For example, the absorption peaks of additives such as sodium benzoate and nitrate for ultraviolet light can be detected by ultraviolet spectroscopy.
4. Analysis of contaminants in food
Various contaminants may exist in food, such as heavy metals, pesticide residues, bacteria, etc. These pollutants will bring harm to human health. It can be used to measure the content of contaminants in food samples to determine whether food is safe. For example, ultraviolet spectroscopy can be used to detect the presence of pesticide residues in food, or fluorescence spectroscopy can be used to detect bacteria in food samples.
In conclusion, the UV-Vis spectrophotometer has a wide range of applications in the field of food inspection. It can help scientists and food industry experts better understand the chemical composition and substance content of food, so as to protect public health and food safety.
ultraviolet-visible spectrophotometer
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