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Therefore, some preparation steps may be required in the lab before analysis. For example, for the SNIF-NMR of ethanol, according to official methods: Fermentation (for fruit juice) Quantitative extraction of ethanol by distillation; Standardized preparation of NMR samples; NMR acquisition; Interpretation of results and report on the authenticity
Isocitric acid is commonly used as a marker to detect the authenticity and quality of fruit products, most often citrus juices. In authentic orange juice, for example, the ratio of citric acid to D-isocitric acid is usually less than 130. An isocitric acid value higher than this may be indicative of fruit juice adulteration. [2]
They are used for clarification in fruit juices and also speed up fruit juice extraction through enzymatic liquefaction of fruit pulp. In addition, pectinase enzymes aid in formation of pulpy products in the fruit juice industry. Pectinase enzymes are used for extracting juice from purée. This is done when the enzyme pectinase breaks down the ...
For fruit juices, 1.0 degree Brix is denoted as 1.0% sugar by mass. This usually correlates well with perceived sweetness. Brix measurements are also used in the dairy industry to measure the quality of colostrum given to newborn calves, goats, and sheep. [8] Modern optical Brix meters are divided into two categories.
A blend of fruit juice(s) with other ingredients, such as high-fructose corn syrup, is called a juice cocktail or juice drink. [10] According to the Food and Drug Administration (FDA), the term "nectar" is generally accepted in the US and in international trade for a diluted juice to denote a beverage that contains fruit juice or puree , water ...
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Apple juice is a fruit juice made by the maceration and pressing of an apple. The resulting expelled juice may be further treated by enzymatic and centrifugal clarification to remove the starch and pectin , which holds fine particulate in suspension, and then pasteurized for packaging in glass, metal, or aseptic processing system containers, or ...