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A high-throughput method for the quantitative determination of alliin
1Institut für Pharmazeutische Biologie, Universität Bonn, Germany. M.KEUSGEN@uni-bonn.de
Planta Medica
|January 27, 2007
Summary
A new analytical method quantifies alliin in garlic (Allium sativum L.) preparations. This high-throughput technique uses immobilized alliinase and flow injection analysis, offering a faster alternative to HPLC for quality control.
Area of Science:
- Analytical Chemistry
- Pharmacognosy
- Food Science
Background:
- Garlic (Allium sativum L.) quality relies on alliin content in various preparations.
- Accurate alliin quantification is crucial from raw material to final products.
- Conventional HPLC methods can be time-consuming for high-throughput analysis.
Purpose of the Study:
- To develop a novel, rapid analytical method for alliin quantification in garlic.
- To provide comprehensive documentation of alliin concentration throughout garlic product processing.
- To establish a high-throughput alternative to traditional HPLC methods.
Main Methods:
- Utilized immobilized alliinase (EC 4.4.1.4) coupled with a two-channel flow injection analyser (FIA).
- Integrated an ammonia detecting device for sensitive alliin measurement.
- Avoided pre-column derivatization and chromatographic separation for increased speed.
Main Results:
- Demonstrated high specificity for alliin using the developed method.
- Successfully analyzed alliin concentrations in diverse garlic samples (powders, dry extracts, preparations).
- Achieved good correlation between new method results and conventional HPLC data.
Conclusions:
- The novel immobilized alliinase-FIA method offers a specific and efficient way to quantify alliin.
- This technique facilitates high-throughput analysis, essential for garlic quality control.
- The method provides reliable results comparable to HPLC, supporting comprehensive documentation.
