What does ADR mean in BRITISH MEDICINE

ADR measures the amount of crude protein present in a sample that can not be extracted using an acid detergent solution.

ADR is calculated by subtracting the weight of a sample after ether extraction with an acidic detergent solution from the weight before extraction. By dividing this number by the initial weight, we get a percentage representing crude protein content that can not be extracted with this solution.

Acid-detergent residue (ADR) measurement is used to assess plant and animal samples such as corn, soybeans, barley, wheat, peas, lentils, alfalfa, oats, fish meal, poultry by-products meal, blood meal and feather meal samples.

To carry out an acid-detergent residue test you will need an analytical balance with readability up to 0.01 g or better accuracy; suitable containers such as glass bottles or plastic beakers for mixing reagents preparations; water bath with heating system (optional); ether extractor; refrigerator/freezer; hot plate stirrer; mechanical stirrer; oven/desiccator/vacuum desiccator; solvents such as glacial acetic acid and sodium lauryl sulfate powder or liquid detergent.

Yes, all chemicals used in laboratory tests should handled in accordance with relevant safety guidelines. In addition to that it’s important to wear appropriate PPE while doing experimental work e.g., lab coat and protective gloves when handling hazardous chemicals like ether extractors.

Depending on how complex your sample is and what kind of methodology you use the average time for getting results may range from about 1 hour up to several days.

Moisture content can affect your results because moisture has a tendency to cause changes in protein structure which can interfere with protein preservation during testing. Therefore proper sample drying techniques should always be used prior to performing any analysis.