QUEBEC—Fruit d’Or sales and product development director Stephen Lukawski is urging the supplement industry toward standardized cranberry products after a company-conducted test found varying levels of proanthocyanidin (PAC) activity in different powdered cranberry juices.
The test was completed in July by the third-party laboratory Complete Phytochemical Solutions, LLC. in Cambridge, Wisconsin, using the DMAC method for quantify soluble extractable PACs. The testing found that Fruit d’Or’s Cran Naturelle Organic product had the highest potency of both soluble and insoluble PACs.
Lukawski asserts that because there is no standardization of potency for PACs on the labels of natural cranberry supplements, thus consumers are not aware how to select the best quality products available. He said he believes that the results of these unpublished tests will open the doors for serious discussion about creating standards for cranberry supplements.
"The real concern is that some buyers are trading off price for quality and the consumer suffers along with the industry," he said. "This lack of standardization amongst natural cranberry powders needs to be addressed with efficacy and science. Consumers would have to take five grams of cranberry juice powder—or 10 to 12 capsules daily— to equal any benefit that can be provided by 1,000 mg of Cran Naturelle daily, which was shown in clinical studies by Rutgers University. This means that the consumer's cost per daily dose is more expensive, and it is also highly inconvenient and unappealing to take so many capsules per day."