Due to health benefits, grape seed extract has become more and more popular. Cheaper plant extracts, for example peanut skin extract, show very similar results with chromatographic methods, and therefore adulteration of grape seed extract may remain undetected. The American Botanical Council’s Botanical Adulterants Prevention Program released a laboratory guidance document that reviews analytical methods for detecting adulteration of grape seed extract with proanthocyanidin-rich extracts from other botanical sources.
Honey is a popular item for adulteration, and honey with a specific botanical source is seen as a more valuable product. The Czech Agriculture and Food Inspection Authority took samples of organic Spanish lavender honey in a Czech supermarket, and analyzed the pollen. The analysis showed that the honey was from alternative botanical sources and certainly not lavender.
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