Chemical, biochemical and electrochemical assays to evaluate phytochemicals and antioxidant activity of wild plants

Barros, Lillian; Cabrita, Luís; Vilas‐Boas, Miguel; Carvalho, Ana María; Ferreira, Isabel C.F.R.

doi:10.1016/j.foodchem.2011.02.024

Cited by 156 publications

(134 citation statements)

References 44 publications

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“…Chlorophyll a and b, β-carotene and lycopene contents of tomato samples were determined with the method described by Barros et al 23 with some modifications as follows: Two hundreds mg of sample was vigorously shaken with 10ml of acetone-hexane mixture (4:6) for 5min and filtered through glass wool. The extract was adjusted to 10ml with volumetric flask.…”

Section: Determination Of Tomato Chlorophylls β-Carotene and Lycopenementioning

confidence: 99%

Impact of Processing Steps on Physicochemical and Rheological Properties of Tomato Paste (Cold-Break)

Shatta¹,

Youssef²,

Sanabani³

et al. 2017

MOJFPT

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Tomato paste is used for color and taste of food preparations. Tomato pastes are potentially rich sources of dietary phytonutrients might contribute important health benefits to consumers. Twenty one samples from five processing steps were collected in-line processing of tomato paste (cold-break) to follow-up the changes of some quality attributes of tomato juice to paste and to investigate the relationship between some rheological properties and pectin fractions, as well as the relation between the Hunter color readings, beta-carotene and lycopene contents. The results showed that, the rheological values, pectin fractions, lycopene and beta-carotene contents were increased significantly during concentration of tomato juice to paste. Lycopene and total carotenoids contents were well correlated with Hunter color parameters ( =0.80-0.93). During concentration process, the studied rheological properties of tomato juice had positive correlations with total and pectin fractions contents. Exponential regression produced a better fit with total, oxalate soluble and water soluble pectins ( =0.83-0.94), while linear regression with acid soluble pectin content produced a good correlation ( =0.93-0.95).This investigation is useful for whom concern with tomato paste processing (cold-break).

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Section: Determination Of Tomato Chlorophylls β-Carotene and Lycopenementioning

confidence: 99%

Impact of Processing Steps on Physicochemical and Rheological Properties of Tomato Paste (Cold-Break)

Shatta¹,

Youssef²,

Sanabani³

et al. 2017

MOJFPT

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“…Considering our group previous research Barros et al, 2011a;Barroset al, 2011b), several species were chosen to be screened for antifungal activity and further characterization, but only three of them highlight as interesting species:…”

Section: Samplesmentioning

confidence: 99%

“…Previous work conducted by our research group has highlighted the importance of wild plants as sources of phenolic compounds, such as phenolic acids, flavonoids and anthocyanins (Barros et al, 2011a). Moreover, flowers from semi-wild and wild species such as Castanea sativa, Filipendula ulmaria and Rosa micrantha have been traditionally used for several folk medicinal applications.…”

Section: Introductionmentioning

confidence: 99%

Characterization of phenolic compounds in wild medicinal flowers from Portugal by HPLC–DAD–ESI/MS and evaluation of antifungal properties

Barros

Alves

Dueñas

et al. 2013

Industrial Crops and Products

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In the present work, the phenolic compounds of Castanea sativa, Filipendula ulmaria and Rosa micrantha flowers from Northeastern Portugal were characterized by HPLC-DAD-ESI/MS. Furthermore, it was performed a screening of their antifungal potential against Candida species (C. albicans, C. glabrata, C. parapsilosis and C. tropicalis).C. sativa sample gave the highest amount of phenolic compounds (18973 ± 40 µg/g, fw)and hydrolysable tannins (14873 ± 110 µg/g). The highest amounts of phenolic acids (569 ± 20 µg/g) and flavonoids (6090 ± 253 µg/g) were obtained in F. ulmaria and R. micrantha samples, respectively. Hydrolysable tannins (e.g. tri and digalloyl HHDP glucose) were the main group of phenolic compounds in C. sativa and F. ulmaria samples, while flavonoids (e.g. (+)-catechin and procyanidin dimers and trimers) were the most abundant group in R. micrantha. Thus, the stronger effect showed by this latter against all the Candida species (MIC ≤ 0.155 mg/mL) and, particularly its fungicide effects in C. glabrata, might be related to the mentioned flavonoids that were inexistence in the other samples.

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“…After 30 months of storage, crystalline lycopene remained stable when stored under the recommended conditions (Barros et al, 2011).…”

Section: Lycopene Stabilitymentioning

confidence: 96%

The Anti-Atherogenic Effects of Lycopene

Basuny¹

2012

Lipoproteins - Role in Health and Diseases

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Chemical, biochemical and electrochemical assays to evaluate phytochemicals and antioxidant activity of wild plants

Cited by 156 publications

References 44 publications

Impact of Processing Steps on Physicochemical and Rheological Properties of Tomato Paste (Cold-Break)

Impact of Processing Steps on Physicochemical and Rheological Properties of Tomato Paste (Cold-Break)

Characterization of phenolic compounds in wild medicinal flowers from Portugal by HPLC–DAD–ESI/MS and evaluation of antifungal properties

The Anti-Atherogenic Effects of Lycopene

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