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Phenolic profiles, phytochemical composition and vitamin C content of selected horticultural produce from Central Queensland

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posted on 2024-08-15, 04:57 authored by Joel JohnsonJoel Johnson, Janice ManiJanice Mani, Beatriz E Hoyos, Mani NaikerMani Naiker
The Central Queensland region of Australia is a large producer of horticultural produce; however, there are limited studies on the phytochemical composition of the produce from this region. Additionally, some crops or cultivars are poorly known in domestic markets; hence are currently only grown for niche markets. There is opportunity to expand production of these crops if they contain higher levels of health-benefiting compounds compared to existing cultivars. Hence this work aimed to elucidate the phytochemical composition of such under-marketed and/or under-utilised crops, including their phenolic acid and flavonoid profiles. The samples included nine cucurbits, two citrus fruits, dragonfruit and Brazilian cherry. The vitamin C (ascorbic acid) content was quantified using high-performance liquid chromatography with diode array detection, while the phenolic profiles were gathered using targeted liquid chromatograph tandem mass spectrometry analysis. Antioxidant activity was quantified using the FRAP and CUPRAC assays, while total phenolic content was measured using the Folin-Ciocalteu assay. The results revealed extensive variation in the levels of health-benefiting compounds between the samples. The phenolic profiles of several species/cultivars are reported for the first time. The highest ascorbic acid content was found in blood orange skin (817 mg/100 g DW), while the highest total phenolic content was found in blood orange skin (1988 mg GAE/100 g). Samples showing high antioxidant capacity included blood orange skin, Brazilian cherry and spaghetti squash. These results may support the prospect of marketing several of the crops/cultivars as functional food crops in domestic or export markets.

History

Volume

17

Issue

1

Start Page

1096

End Page

1107

Number of Pages

12

eISSN

2193-4134

ISSN

2193-4126

Publisher

Springer Science and Business Media LLC

Additional Rights

CC-BY

Language

en

Peer Reviewed

  • Yes

Open Access

  • Yes

Acceptance Date

2022-10-26

Author Research Institute

  • Institute for Future Farming Systems

Era Eligible

  • Yes

Journal

Journal of Food Measurement and Characterization

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