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Marketplace analysis demonstrates quality control standards needed for black raspberry dietary supplements.

Lee J - Plant Foods Hum Nutr (2014)

Bottom Line: There was a wide range of anthocyanin concentration within the remaining products (18.1-2,904.8 mg/100 g; n = 12).When expressed as per capsule or per ∼1 teaspoon, concentration ranged from 0.1 to 145.2 mg (average 28 mg; n = 12).Until US dietary supplement labeling comes under regulatory oversight similar to food guidelines, foods are a more dependable source for dietary phenolics than supplements.

View Article: PubMed Central - PubMed

Affiliation: United States Department of Agriculture, Agricultural Research Service, Horticultural Crops Research Unit Worksite, 29603 U of I Ln., Parma, ID, 83660, USA, jungmin.lee@ars.usda.gov.

ABSTRACT
There is currently no standard for the minimum anthocyanin concentration a black raspberry dietary supplement must contain for legal sale in the US. All consumer available black raspberry products (n = 19), packaged as dietary supplements or otherwise prepared (freeze-dried whole and pre-ground powders), were purchased and analyzed for their anthocyanin composition and concentration. Seven of the 19 samples contained no anthocyanins from black raspberry fruit, while three of those seven (without black raspberry fruit) had no anthocyanins of any kind. There was a wide range of anthocyanin concentration within the remaining products (18.1-2,904.8 mg/100 g; n = 12). When expressed as per capsule or per ∼1 teaspoon, concentration ranged from 0.1 to 145.2 mg (average 28 mg; n = 12). Until US dietary supplement labeling comes under regulatory oversight similar to food guidelines, foods are a more dependable source for dietary phenolics than supplements.

Show MeSH
Anthocyanin profiles of black raspberries (a- ‘Munger’ and b- A09) and selected supplement samples (c- A10, d- A12, e- A14, and f- B04) that contained questionable materials other than black raspberry fruit. The chromatograms were monitored at 520 nm (280 and 255 nm traces not shown). Clearly, black raspberry anthocyanin profile is suitable for authenticity work (comparing ‘Munger’ to sample A09, leaves no doubt that A09 contains black raspberry). Corresponding peak identification for ‘Munger’ and A09 listed in Table 2. Additional black raspberry anthocyanin profiles can be found in our past work [7, 8, 10, 11]
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Related In: Results  -  Collection


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Fig2: Anthocyanin profiles of black raspberries (a- ‘Munger’ and b- A09) and selected supplement samples (c- A10, d- A12, e- A14, and f- B04) that contained questionable materials other than black raspberry fruit. The chromatograms were monitored at 520 nm (280 and 255 nm traces not shown). Clearly, black raspberry anthocyanin profile is suitable for authenticity work (comparing ‘Munger’ to sample A09, leaves no doubt that A09 contains black raspberry). Corresponding peak identification for ‘Munger’ and A09 listed in Table 2. Additional black raspberry anthocyanin profiles can be found in our past work [7, 8, 10, 11]

Mentions: Sample codes, brief summary of label information (codes used in Table 2), and observations. All samples were labeled on the bottle or package that contained black raspberry


Marketplace analysis demonstrates quality control standards needed for black raspberry dietary supplements.

Lee J - Plant Foods Hum Nutr (2014)

Anthocyanin profiles of black raspberries (a- ‘Munger’ and b- A09) and selected supplement samples (c- A10, d- A12, e- A14, and f- B04) that contained questionable materials other than black raspberry fruit. The chromatograms were monitored at 520 nm (280 and 255 nm traces not shown). Clearly, black raspberry anthocyanin profile is suitable for authenticity work (comparing ‘Munger’ to sample A09, leaves no doubt that A09 contains black raspberry). Corresponding peak identification for ‘Munger’ and A09 listed in Table 2. Additional black raspberry anthocyanin profiles can be found in our past work [7, 8, 10, 11]
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4544477&req=5

Fig2: Anthocyanin profiles of black raspberries (a- ‘Munger’ and b- A09) and selected supplement samples (c- A10, d- A12, e- A14, and f- B04) that contained questionable materials other than black raspberry fruit. The chromatograms were monitored at 520 nm (280 and 255 nm traces not shown). Clearly, black raspberry anthocyanin profile is suitable for authenticity work (comparing ‘Munger’ to sample A09, leaves no doubt that A09 contains black raspberry). Corresponding peak identification for ‘Munger’ and A09 listed in Table 2. Additional black raspberry anthocyanin profiles can be found in our past work [7, 8, 10, 11]
Mentions: Sample codes, brief summary of label information (codes used in Table 2), and observations. All samples were labeled on the bottle or package that contained black raspberry

Bottom Line: There was a wide range of anthocyanin concentration within the remaining products (18.1-2,904.8 mg/100 g; n = 12).When expressed as per capsule or per ∼1 teaspoon, concentration ranged from 0.1 to 145.2 mg (average 28 mg; n = 12).Until US dietary supplement labeling comes under regulatory oversight similar to food guidelines, foods are a more dependable source for dietary phenolics than supplements.

View Article: PubMed Central - PubMed

Affiliation: United States Department of Agriculture, Agricultural Research Service, Horticultural Crops Research Unit Worksite, 29603 U of I Ln., Parma, ID, 83660, USA, jungmin.lee@ars.usda.gov.

ABSTRACT
There is currently no standard for the minimum anthocyanin concentration a black raspberry dietary supplement must contain for legal sale in the US. All consumer available black raspberry products (n = 19), packaged as dietary supplements or otherwise prepared (freeze-dried whole and pre-ground powders), were purchased and analyzed for their anthocyanin composition and concentration. Seven of the 19 samples contained no anthocyanins from black raspberry fruit, while three of those seven (without black raspberry fruit) had no anthocyanins of any kind. There was a wide range of anthocyanin concentration within the remaining products (18.1-2,904.8 mg/100 g; n = 12). When expressed as per capsule or per ∼1 teaspoon, concentration ranged from 0.1 to 145.2 mg (average 28 mg; n = 12). Until US dietary supplement labeling comes under regulatory oversight similar to food guidelines, foods are a more dependable source for dietary phenolics than supplements.

Show MeSH