Do the labels of vitamin A, C, and E supplements reflect actual vitamin content in commercial supplements?

Abe-Matsumoto, Lucile Tiemi; Sampaio, Geni Rodrigues; Bastos, Deborah Helena Markowicz

doi:10.1016/j.jfca.2018.07.001

Cited by 18 publications

(10 citation statements)

References 31 publications

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“…Humans obtain carotenoids from mainly fruits and vegetables, but also from other plant products, algae, animal foods, or other products such as additives or nutritional supplements ( Figure ). In addition to the wide variety of fruits and vegetables (including exotic and even non‐domesticated ones) that are sources of carotenoids, they can also be ingested from other plant products such as herbs, legumes, cereals, or even oils, from which they can be very bioavailable …”

Section: Importance Of Carotenoids In Agro‐food Health and Diseasementioning

confidence: 99%

An Overview of Carotenoids, Apocarotenoids, and Vitamin A in Agro‐Food, Nutrition, Health, and Disease

Meléndez-Martínez

2019

Molecular Nutrition Food Res

179

126

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Carotenoids are fascinating compounds that can be converted into many others, including retinoids that also play key roles in many processes. Although carotenoids are largely known in the context of food science, nutrition, and health as natural colorants and precursors of vitamin A (VA), evidence has accumulated that even those that cannot be converted to VA may be involved in health‐promoting biological actions. It is not surprising that carotenoids (most notably lutein) are among the bioactives for which the need to establish recommended dietary intakes have been recently discussed. In this review, the importance of carotenoids (including apocarotenoids) and key derivatives (retinoids with VA activity) in agro‐food with relevance to health is summarized. Furthermore, the European Network to Advance Carotenoid Research and Applications in Agro‐Food and Health (EUROCAROTEN) is introduced. EUROCAROTEN originated from the Ibero‐American Network for the Study of Carotenoids as Functional Food Ingredients (IBERCAROT).

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Section: Importance Of Carotenoids In Agro‐food Health and Diseasementioning

confidence: 99%

An Overview of Carotenoids, Apocarotenoids, and Vitamin A in Agro‐Food, Nutrition, Health, and Disease

Meléndez-Martínez

2019

Molecular Nutrition Food Res

179

126

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“…In contrast the analysis of folic acid content in the food supplements sold in Spain [ 21 ] showed that the determined content was within a tolerated range with regard to the declared values, which were in accordance with EU regulation requirements. Noncompliances of the declared and determined contents were also found in a study of vitamins A, C and E in 57 food supplements available on the Brazilian market [ 19 ]. The determined contents for vitamins A and E were lower than the declared contents in 71% and 50% of food supplements, respectively [ 19 ].…”

Section: Resultsmentioning

confidence: 97%

“…Issues of noncompliance of the declared and the determined contents were recently also reported for food supplements claiming to contain folic acid [ 18 ], vitamin A [ 19 ], vitamin C [ 19 ], vitamin E [ 19 ] and magnesium [ 20 ]. Analyses of 30 folic acid food supplements available on the Polish market revealed that in 29 products, representing 96.6% of food supplements analyzed, the determined contents were lower than the declared [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

Resveratrol Food Supplement Products and the Challenges of Accurate Label Information to Ensure Food Safety for Consumers

2023

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The food supplement market is growing as many consumers wish to complement their nutrient intake. Despite all the regulations in place to ensure food supplements safety, there are still many cases of irregularities reported especially connected to internet sales. Twenty resveratrol food supplement products sold on the Slovenian market were evaluated on their compliance of declared vs. determined resveratrol content, as well as the compliance of labels with the European Union (EU) and Slovenian regulatory requirements. Both the ingredient contents and food information are important parts of food safety. Analyses of 20 food supplements performed using high-performance thin-layer chromatography (HPTLC) coupled with densitometry showed that 95% of products had contents different from what was declared and 55% of products contained higher contents than declared. In 25% of the products the determined content per unit exceeded the maximum level (150 mg/day) specified in EU novel food conditions for food supplement with trans-resveratrol. Evaluation of the 20 food supplement labels included mandatory and voluntary food information, food supplement information, novel food information, health claims and nutrition claims. Most labels contained the necessary information, but multiple errors were observed ranging from typos to misleading practices. From a food safety perspective, there is still a lot of improvement needed in the field of food supplements.

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“…The validation parameters for titrimetric method for determination of vitamin C are reported in Abe-Matsumoto et al [13]. The LOD and LOQ is 1.0 mg and 3.0 mg, respectively [13].…”

Section: Vitamin C Stabilitymentioning

confidence: 99%

“…The validation parameters for titrimetric method for determination of vitamin C are reported in Abe-Matsumoto et al [13]. The LOD and LOQ is 1.0 mg and 3.0 mg, respectively [13]. Recovery (%) for the gelatin matrix ranged from 97.2% to 100.7%, where the results (%) of triplicate for each level (1, 2 and 3) were respectively 98.5 ± 1.9, 99.2 ± 0.5, and 99.2 ± 0.6, and was considered satisfactory according to ICH [11].…”

Section: Vitamin C Stabilitymentioning

confidence: 99%

Stability of Vitamin C in Enriched Jelly

Abe-Matsumoto¹,

Araújo²,

Medeiros³

2020

Braz. J. Anal. Chem.

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Fortification of foods with vitamins has become increasingly common. However, further studies on the stability of vitamins in foods are required because these compounds can easily degrade. The objective of this study was to evaluate the stability of ascorbic acid (AA; vitamin C) in fortified gelatin after dissolving the powder in water at room temperature (25 °C), after preparing the jelly according to label instructions, and after storing the ready-to-eat product for three days in the refrigerator, comparing the obtained values to those stated on the label. AA was measured by iodometry using an automatic potentiometric titrator with a platinum ring electrode. The AA contents of all the samples dissolved in cold water were either equal to or above those stated on their labels. However, the AA contents of two of the prepared and stored samples were below their stated label values, confirming AA degradation.

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Do the labels of vitamin A, C, and E supplements reflect actual vitamin content in commercial supplements?

Cited by 18 publications

References 31 publications

An Overview of Carotenoids, Apocarotenoids, and Vitamin A in Agro‐Food, Nutrition, Health, and Disease

An Overview of Carotenoids, Apocarotenoids, and Vitamin A in Agro‐Food, Nutrition, Health, and Disease

Resveratrol Food Supplement Products and the Challenges of Accurate Label Information to Ensure Food Safety for Consumers

Stability of Vitamin C in Enriched Jelly

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