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Analyse drinking water, wine, softdrinks and other beverages with HPLC
Liquid chromatography solutions for the quality control of beverages applying HPLC methods
Liquid chromatography solutions for the quality control of beverages applying HPLC methods
Whether sparkling water, orange juice or a beer, all drinks contain additives. Some have been deliberately added, others need to be skimmed. What is important is accurate, reproducible and cost-effective analysis and quality control. KNAUER offers high-end systems "Made in Germany" for HPLC analysis and coupling with Online SPE. KNAUER´s research laboratory with the analysis experts in Berlin will find the right application and the HPLC system that is tailored to your requirements. Analysis and quality control become cost effective and efficient.
The use of online coupling of solid phase extraction (SPE) avoids time consuming and manual sample preparation steps, making the method well-suited for routine analyses of BPA in low concentration samples like drinking water.
Epigallocatechin gallate is one of the major metabolites in green tea material and has shown positives effects on human health in several studies. This target molecule was isolated together with three other polyphenolic compounds in a short time using mass-triggered fractionation.
This dedicated system is specifically designed for solid phase extraction (SPE) in combination with a powerful analytical KNAUER AZURA HPLC system.
Our versatile Assistant Module ASM 2.1L with two switching valves V 2.1S and a pump P 4.1S enables an efficient online SPE to concentrate analytes prior to HPLC analysis. This results in the reduction of analysis time and sample contamination as well as in an increase of analyte yield.
Afterward, separation and analysis can be achieved with a classical KNAUER AZURA analytical system equipped with P 6.1L LPG pump, a column thermostat CT 2.1 and a multiwavelengths detector MWD 2.1L to detect up to eight different wavelengths simultaneously.
Resveratrol is a natural stilbene present in wine and grapes. It has been studied mainly for its antiinflammatory and anticancer activities. Flavonoids are a group of phytonutrients found in almost all fruits and vegetables and are powerful antioxidants with anti-inflammatory and immune system benefits.
Based on a sulfonated cross-linked styrenedivinylbenzene copolymer, the ionic forms Pb and Ca are best suited for the analysis of smaller carbohydrates line mono- and disaccharides and sugars up to DP 4.
Biogenic amines can have negative impacts on consumer health, as well as the wine´s sensory attributes. Elevated levels of biogenic amines typically cause a reduction in wine aroma. Therefore, the concentration and composition of these compounds must be monitored.
Flavonoids are a group of phytonutrients found in almost all fruits and vegetables and are responsible for the vivid colours. Like other phytonutrients, flavonoids are powerful antioxidants with anti-inflammatory and immune system benefits.
In the last years isotonic beverages have become more and more popular. Almost every drink is available in an isotonic version. But what does isotonic mean and what are its benefits? How can be checked that beverages are really isotonic? And have you ever heard of osmolality?
Citrus fruits contain a variety of flavonoids, including flavorless Hesperidine and bitter Naringine. Hesperidine is found in high concentrations in the fruit peel of oranges and mandarines and in substantially lower concentrations in the juice of these fruits. Naringine is also found to be similarly distributed in oranges and grapefruits.
Soft drinks sweeteners and preservatives are polar molecules which can cause problems in extraction-methods. Therefore, a method that uses minimal sample preparation is needed.
The deleterious and mutagenic mould fungus product patulin can frame during wrong cidermaking process of fruits like apple. The permitted daily exposure for patulin is regulated by the scientific committee for foodstuffs of the European commission. The specified determination routines have to be performed with HPLC according to official guidelines.
