Characterization of phenolic compounds and antioxidative potential of pot-pollen produced by stingless bees (Tetragonula biroi Friese) from the Philippines

Issue Date

11-2019

Abstract

Eight pot-pollen samples produced by Philippine stingless bees (Tetragonula biroi Friese) were analyzed for the antioxidant composition and capacity. The methanolic extracts showed values of 7.95–24.75 mg GAE/g, 16.13–35.04 mg QE/g, and 0.19–0.74 mg CGE/g for total phenolics, flavonoids, and anthocyanins, respectively. All pot-pollens contained substantial amounts of rutin (0.471–1.547 mg/g), quercetin glucoside (1.427–3.390 mg/g), other flavonol glycosides, and hydroxycinnamic acids. Additionally, pollen samples contained 24-methylenecholesterol and Δ5-avenasterol as dominant phytosterols. Antioxidant activities based on ferric ion reducing antioxidant power (FRAP), DPPH•, and ABTS•+ scavenging activities, and lipid peroxidation (LPO) inhibition showed a high correlation with phenolic and flavonoid contents, except for LPO inhibition. Results suggested that there might be synergistic effects among antioxidants. Summing up, this study revealed that T. biroi Friese pot-pollen can be used as a food supplement with high nutraceutical potential. Practical applications: The recognition of Tetragonula biroi Friese pot-pollen as a nutraceutical product is strongly limited because its bioactive properties are not well-studied compared to other bee pollens. The results showed a rich occurrence of compounds with antioxidative effects like flavonoids and sterols. Antioxidant activities except lipid peroxidation inhibition revealed a high correlation with analyzed ingredients and shown interactions indicated that there might be synergistic effects among antioxidants.

Source or Periodical Title

Journal of Food Biochemistry

ISSN

0145-8884

Volume

44

Issue

1

Page

e13102

Document Type

Article

Physical Description

graphs, references

Language

English

Subject

antioxidant activities, flavonoids, phenolics, Philippine bee pollen, phytosterol, stingless bees, total flavonoid content, total monomeric anthocyanin content, total phenolic content

Identifier

doi: 10.1111/jfbc.13102

Digital Copy

Yes

En – AGROVOC descriptors

ANTIOXIDANT ACTIVITIES; FLAVONOIDS; PHENOLICS; PHILIPPINE BEE POLLEN; PHYTOSTEROL; STINGLESS BEES; TOTAL FLAVONOID CONTENT; TOTAL MONOMERIC ANTHOCYANIN CONTENT; TOTAL PHENOLIC CONTENT

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