High cost food and beverages are targets of adulteration for economic gain. Foods that are naturally sweet, such as honey, are often diluted with inexpensive sweeteners and then sold as 100% natural.
Orange juice has been subject to the same type of adulteration. Expensive fruit juices can be diluted with less expensive juices to reap economic gain and defraud the customer. Sometimes a food product is valued for its geographic origin. These products are also subject to fraud when the same type of product from a different location is labeled as being from the desired location. Labeling a whisky as Scotch whisky that was not produced in Scotland is an example of this type of fraud.
Many expect there will be more cases of food and beverage fraud in the future. Fortunately there are analytical techniques available to detect many of these adulteration and authenticity issues. Ion chromatography (IC) is one such technique. After minimal sample preparation, often just dilution and filtration, samples are separated by ion-exchange and detected by suppressed conductivity, amperometric, absorbance, or some other detection.
This webinar will review the basics of IC and then detail examples of how IC has been applied to food and beverage adulteration and authenticity studies. Foods and beverages that will be discussed include honey, coffee, and fruit juices.
Dr. Jeffrey Rohrer
Director of Applications Development
Thermo Fisher Scientific
Dr Jeffery Rohrer directs the work of the corporate applications laboratory in Sunnyvale California. He also advises and reviews the work of other chromatography labs at Thermo Fisher Scientific. These labs develop HPLC, IC, HPAE-PAD, and other LC-based assays. Dr. Rohrer is an author of more than70 peer-reviewed publications. He is also the co-editor of a book titled Application of Ion Chromatography for Pharmaceutical and Biological Products, which was published in 2012. Dr. Rohrer joined Thermo Fisher Scientific (then Dionex) in 1989 and has held positions that include, Marketing Field Chemist, Senior Biochemist in R&D, and Applications Lab Manager. Jeff received his undergraduate degree in Chemistry from Franklin and Marshall College in 1981 and his Ph.D. in Chemistry from the University of Delaware.