Polyphenols as Supplements in Foods and Beverages

Gollücke, Andréa Pittelli Boiago; Ribeiro, Daniel Araki; Aguiar, Odair

doi:10.1016/b978-0-12-398456-2.00007-4

“…Te favonoids (favanols) considered in our study are sourced similarly following closely related biosynthesis in most cases. Tey are even common in dietary sources [56]. Flavonoids occur in most plant parts, specifcally photosynthesizing plant cells as major coloring components of fowering plants [41].…”

Section: Discussionmentioning

confidence: 99%

“…Phenolic acids: syringic acid, chlorogenic acid, gallic acid, and favonoids: quercetin, myricetin, rutin, and kaempferol are common in food substances, including alcoholic drinks and fruits [56]. Phenolic compounds are known to impart benefcial properties such as antimicrobial, preservatives, antioxidants [55], and other varied physiological properties [64].…”

Section: Discussionmentioning

confidence: 99%

Antioxidant Activity of Flavonoids and Phenolic Acids from Dodonaea angustifolia Flower: HPLC Profile and PASS Prediction

Tessema

¹

,

Gonfa

²

,

Asfaw

³

et al. 2023

Journal of Chemistry

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Background. Dodonaea angustifolia is a known medicinal plant across East Arica. The flower of D. angustifolia is not well investigated in terms of phytochemistry and biological activities. This study aims to investigate the presence of flavonoids and phenolic acids in the flower of D. angustifolia and its antioxidant activity. Methods. Preliminary phytochemical screening was carried out using the standard protocols. Antioxidant activity evaluation using DPPH assay and total phenol content (TPC) and total flavonoid content (TFC) determinations in the flower extract were compared with the values of the leaf extract. UHPLC-DAD analysis was managed to develop the profile of the flower extract. Prediction of biological activity spectra for substances (PASS) was done using an online server for antioxidant and related activities. Results. Preliminary phytochemical screening and TPC and TFC values confirmed the presence of flavonoids and phenolic acids. From the HPLC analysis of flavonoids, quercetin, myricetin, rutin, and phenolic acids such as chlorogenic acid, gallic acid, and syringic acid were detected and quantified. The biological activity spectrum was predicted for the detected and quantified polyphenols. Conclusions. D. angustifolia flower is a rich source of flavonoids and phenolic acids, which are extractable and can be checked for further biological activity. It was possible to identify and quantify phenolic compounds through HPLC analysis in the methanol extract of D. angustifolia flower. The PASS biological activity prediction results showed that there were stronger antioxidant activities for the identified flavonoids. Future work will emphasize the isolation and characterization of active principles responsible for bioactivity.

show abstract

Antioxidant activity of flavonoids and phenolic acids from Dodonaea angustifolia flower: HPLC profile and PASS prediction

Tessema

¹

,

Gonfa

²

,

Tadesse

³

et al. 2023

Preprint

View full text Add to dashboard Cite

Background Dodonaea angustifolia is a known medicinal plant across East Arica. The flower of D. angustifolia is not well investigated in terms of phytochemistry and biological activities. This study aims to investigate the presence of flavonoids and phenolic acid in the flower of D. angustifolia and its antioxidant activity. Methods Preliminary phytochemical screening was carried out using standard protocols. Antioxidant activity evaluation using DPPH assay and total phenol content (TPC) and total flavonoid content (TFC) determinations in the flower extract was compared with the values of the leaf extract. UHPLC–DAD analysis was managed to develop the profile of the flower extract. Prediction of biological activity spectra for substances (PASS) was done using an online server for antioxidant and related activities. Results Preliminary phytochemical screening, TPC, and TFC values confirmed the presence of flavonoids and phenolic acids. From HPLC analysis of flavonoids: quercetin, myricetin, rutin, and phenolic acids: chlorogenic acid, gallic acid, and syringic acid were detected and quantified. The biological activity spectrum was predicted for the detected and quantified polyphenols. Conclusions D. angustifolia flower is a rich source of flavonoids and phenolic acids, which are extractable and can be checked for further biological activity. It was possible to identify and quantify phenolic compounds through HPLC analysis in the methanol extract of D. angustifolia flower. PASS biological activity prediction results showed that there were stronger antioxidant activities for the identified flavonoids. Future work will emphasize the isolation and characterization of active principles responsible for bioactivity.

show abstract

Antioxidant activity of flavonoids and phenolic acids from Dodonaea angustifolia flower: HPLC profile and PASS prediction

Tessema

¹

,

Gonfa

²

,

Tadesse

³

et al. 2023

Preprint

View full text Add to dashboard Cite

Background Dodonaea angustifolia is a known medicinal plant across East Arica. The flower of D. angustifolia is not well investigated in terms of phytochemistry and biological activities. This study aims to investigate the presence of flavonoids and phenolic acid in the flower of D. angustifolia and its antioxidant activity. Methods Preliminary phytochemical screening was carried out using standard protocols. Antioxidant activity evaluation using DPPH assay and total phenol content (TPC) and total flavonoid content (TFC) determinations in the flower extract was compared with the values of the leaf extract. UHPLC–DAD analysis was managed to develop the profile of the flower extract. Prediction of biological activity spectra for substances (PASS) was done using an online server for antioxidant and related activities. Results Preliminary phytochemical screening, TPC, and TFC values confirmed the presence of flavonoids and phenolic acids. From HPLC analysis of flavonoids: quercetin, myricetin, rutin, and phenolic acids: chlorogenic acid, gallic acid, and syringic acid were detected and quantified. The biological activity spectrum was predicted for the detected and quantified polyphenols. Conclusions D. angustifolia flower is a rich source of flavonoids and phenolic acids, which are extractable and can be checked for further biological activity. It was possible to identify and quantify phenolic compounds through HPLC analysis in the methanol extract of D. angustifolia flower. PASS biological activity prediction results showed that there were stronger antioxidant activities for the identified flavonoids. Future work will emphasize the isolation and characterization of active principles responsible for bioactivity.

show abstract

Polyphenols as Supplements in Foods and Beverages

Cited by 4 publications

References 43 publications

Antioxidant Activity of Flavonoids and Phenolic Acids from Dodonaea angustifolia Flower: HPLC Profile and PASS Prediction

Antioxidant Activity of Flavonoids and Phenolic Acids from Dodonaea angustifolia Flower: HPLC Profile and PASS Prediction

Antioxidant activity of flavonoids and phenolic acids from Dodonaea angustifolia flower: HPLC profile and PASS prediction

Antioxidant activity of flavonoids and phenolic acids from Dodonaea angustifolia flower: HPLC profile and PASS prediction

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