Value Assignment of Retinol, Retinyl Palmitate, Tocopherol, and Carotenoid Concentrations in Standard Reference Material 2383 (Baby Food Composite)

Sharpless, Katherine E.; Arce-Osuna, Mariana; Thomas, Jeffrey J.; Gill, Lisa M

doi:10.1093/jaoac/82.2.288

Cited by 39 publications

(16 citation statements)

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“…Vitamin E and b-carotene were extracted following the method described by Sharpless et al (Sharpless, Arce-Usuna, Thomas, & Gill, 1999). The sample was saponified in methanol/tetrahydrofuran (THF), then the reaction mixture was extracted with hexane/ diethylether, the extract was evaporated and the residue was dissolved in hexane.…”

Section: A-tocopherol and B-carotene Determinationmentioning

confidence: 99%

Improvement of the nutraceutical quality of broccoli sprouts by elicitation

et al. 2016

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Epidemiological studies show an inverse association between Brassica consumption and chronic diseases. Phytochemicals are thought to be beneficial for human health and therefore responsible for this protective effect. Increasing their levels into Brassica food is considered an expedient nutritional strategy that can be achieved through the manipulation of growth conditions by elicitors. In this work we systematically evaluated the influence of treatment with different elicitors (sucrose, mannitol, NaCl, 1-aminocyclopropane-L-carboxylic acid, salicylic acid and methyl jasmonate) on the phytochemical composition of broccoli sprouts. The content of total and single glucosinolates, total phenolic compounds, total flavonoids, total anthocyanins, vitamin C and E and β-carotene was assessed. The exposure to different elicitors produced concentration- and elicitor-dependent specific changes in the content of all the phytochemicals considered. Sucrose, identified as the most effective elicitor by principal component analysis, induced a significant increase of total and specific glucosinolates, vitamin C, total anthocyanins and polyphenols. Sucrose is likely to represent an effective tool to increase the nutritional value of broccoli sprouts.

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Section: A-tocopherol and B-carotene Determinationmentioning

confidence: 99%

Improvement of the nutraceutical quality of broccoli sprouts by elicitation

et al. 2016

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“…Carotenoids were determined as described by Sharpless et al [33]. This method is used by the National Institute of Standards and Technology (NIST, Gaithersburg, Maryland).…”

Section: Extraction and Quantification Of Carotenoidsmentioning

confidence: 99%

Italian Wild Rocket [Diplotaxis Tenuifolia (L.) DC.]: Influence of Agricultural Practices on Antioxidant Molecules and on Cytotoxicity and Antiproliferative Effects

et al. 2013

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Wild rocket [Diplotaxis tenuifolia (L.) DC.] belongs to the Brassicaceae family and has its origin in the Mediterranean region. The effect of conventional and integrated cultivation practices on the nutritional properties and benefits of wild rocket [Diplotaxis tenuifolia (L.) DC.] were studied. Bioactive molecules content (vitamin C, quercetin, lutein), antioxidant properties and bioactivity of polyphenolic extracts from the edible part of rocket in Caco-2 cells were determined. Regarding antioxidant properties, FRAP (Ferric Reducing Antioxidant Power) values ranged from 4.44 ± 0.11 mmol/kg fw to 9.92 ± 0.46 mmol/kg fw for conventional rocket and from 4.13 ± 0.17 fw mmol/kg to 11.02 ± 0.45 mmol/kg fw for integrated rocket. The characteristics of wild rocket as a dietary source of antioxidants have been pointed out. Significant differences in the quality of conventional and integrated rocket have been shown, while no influence of agronomic practice on biological activity was reported. A significant accumulation of cells in G1 phase and a consequent reduction in the S and G2 + M phases were observed in Caco-2 cells treated with rocket polyphenol extract

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“…Carotenoids were extracted using the method described by Sharpless et al [46]. The determination of carotenoid concentrations was carried out by high performance liquid chromatography techniques (HPLC) [34].…”

Section: Carotenoidsmentioning

confidence: 99%

Absorption of strawberry phytochemicals and antioxidant status changes in humans

Azzini

Intorre

Vitaglione

et al. 2010

Journal of Berry Research

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In this study the antioxidant composition of fresh and stored strawberries and the bioavailability of the main strawberry bioactive compounds were determined in humans. In addition we have investigated plasma total antioxidant capacity. On 13 healthy volunteers, blood samples were collected before and after acute ingestion of fresh and stored strawberries, 300 g respectively. Ferric Reducing Antioxidant Power (FRAP) values after consumption of fresh and stored strawberries showed a significant increase (P < 0.05) at 5 and 8 hours time interval, while significantly decreased TRAP (Total Radical-Trapping Antioxidant Parameter) values (P < 0.05) were found at 8 hours respect to baseline after stored strawberries consumption. After consuming fresh strawberries, plasma levels of ␣-carotene increased significantly (P < 0.05) respect to stored ones. Moreover, consumption of fresh and stored strawberries resulted in a significant increase of vitamin C at 2, 3 and 5 hours (P < 0.05). The bioavailable amount of strawberries antioxidant compounds reflects the variations observed in fresh and stored fruits. We could summarize that the global food quality is related to both native quantity of bioactive compounds and storage treatments.

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Value Assignment of Retinol, Retinyl Palmitate, Tocopherol, and Carotenoid Concentrations in Standard Reference Material 2383 (Baby Food Composite)

Cited by 39 publications

References 0 publications

Improvement of the nutraceutical quality of broccoli sprouts by elicitation

Improvement of the nutraceutical quality of broccoli sprouts by elicitation

Italian Wild Rocket [Diplotaxis Tenuifolia (L.) DC.]: Influence of Agricultural Practices on Antioxidant Molecules and on Cytotoxicity and Antiproliferative Effects

Absorption of strawberry phytochemicals and antioxidant status changes in humans

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