Mineral Analysis in Food, Feed and Agriculture

Minerals are essential inorganic nutrients that support a wide range of physiological and biochemical processes in both humans and animals. Although required in varying amounts, from relatively large quantities to trace levels, minerals play a critical role in maintaining normal body function, growth, and development.
Unlike vitamins, which are organic compounds, minerals are elemental in nature and originate from the earth and water. They are absorbed by plants or consumed through animal-based foods, making diet the primary source of mineral intake. Because the body cannot produce minerals, they must be obtained consistently through food or feed.

Minerals perform both structural and regulatory roles in biological systems.
Structurally, minerals contribute to the formation and maintenance of bones and teeth. Calcium and phosphorus, for example, are key components of skeletal structure.
Regulatory functions include nerve transmission, muscle contraction, fluid balance, and enzyme activation. Iron is essential for oxygen transport in the blood, while magnesium plays a role in muscle and nerve function.
These roles highlight that minerals are not simply dietary components, but fundamental to normal physiological operation in both humans and animals.

A varied diet typically provides a broad range of minerals. Whole grains, fruits, vegetables, legumes, dairy products, nuts, seeds, and protein sources all contribute differently to mineral intake.
In animal nutrition, minerals are supplied through feed ingredients and often supplemented through premixes to ensure adequate levels for growth and production.
Water may also contribute to mineral intake, depending on its composition. Because mineral content varies between sources, dietary diversity and proper formulation are essential for maintaining balanced intake.

Mineral deficiencies can develop gradually when intake is insufficient or absorption is impaired. The effects depend on the specific mineral involved and the severity of the deficiency, but may include impaired growth, reduced performance, or physiological dysfunction.
At the same time, excessive intake, particularly from concentrated supplements or imbalanced formulations, can also have negative effects.
Because both deficiency and excess influence health and performance, accurate evaluation through laboratory testing is often more reliable than visual assessment or assumption.

Minerals are equally important in agriculture, where they play a central role in plant growth, soil health, and crop productivity.
In crop production, mineral availability directly affects plant development, yield, and resistance to environmental stress. Both macronutrients and micronutrients must be present in the correct balance to support optimal growth.
Mineral analysis in agriculture is used to:
‣ Identify nutrient deficiencies in soil and water
‣ Optimise fertiliser application and reduce overuse
‣ Improve soil structure, fertility, and microbial activity
‣ Support sustainable agricultural practices
‣ Enhance crop yield and overall plant performance
Understanding mineral content in soil, water, and plant material allows for more informed decision-making and improved resource management.

In food and feed analysis, minerals are typically assessed through laboratory testing to determine total mineral content and individual element concentrations.
Ash determination is commonly used as a starting point, providing an estimate of total mineral content after removal of organic material. This is often followed by more detailed analysis using techniques such as ICP-OES to quantify specific minerals.
Mineral analysis supports:
‣ Nutritional evaluation
‣ Quality control and consistency
‣ Feed formulation accuracy
‣ Verification of label claims
‣ Detection of contamination or imbalance

Mineral testing is a routine and essential component of analytical work in food, feed, and agricultural laboratories.
Accurate measurement allows producers, nutritionists, and researchers to assess composition, monitor quality, and ensure compliance with specifications.
When combined with other parameters such as protein, fat, fibre, and moisture, mineral analysis contributes to a comprehensive understanding of product quality, nutritional value, and performance.