Phytochemicals in Japanese plums: impact of maturity and bioaccessibility

Bobrich, Anna, Fanning, Kent J., Rychlik, Michael, Russell, Dougal, Topp, Bruce and Netzel, Michael (2014) Phytochemicals in Japanese plums: impact of maturity and bioaccessibility. Food Research International, 65 Part A: 20-26. doi:10.1016/j.foodres.2014.06.030

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Author Bobrich, Anna
Fanning, Kent J.
Rychlik, Michael
Russell, Dougal
Topp, Bruce
Netzel, Michael
Title Phytochemicals in Japanese plums: impact of maturity and bioaccessibility
Journal name Food Research International   Check publisher's open access policy
ISSN 0963-9969
Publication date 2014-11
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.foodres.2014.06.030
Open Access Status
Volume 65
Issue Part A
Start page 20
End page 26
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2015
Language eng
Formatted abstract
In recent years there has been increasing consumer interest in the potential health benefits of dietary derived phytochemicals such as polyphenols (including anthocyanins and flavonols) and carotenoids. A new variety of Japanese plum (Prunus salicina Lindl.), named Queen Garnet (QG), was developed as a high anthocyanin plum in a Queensland (Australia) Government breeding program and may be attractive to consumers, but knowledge of other phytochemical content, and bioaccessibility, is currently limited. As a result, the present study examined (1) the impact of harvest date on anthocyanins, quercetin glycosides and carotenoids in Queen Garnet and another red fleshed commercial Japanese plum variety, Black Diamond (BD), (2) the content of bound phenolics in plum fruit and (3) the in vitro bioaccessibility and release of these phytochemicals as an initial measure to predict their potential bioavailability. For both QG and BD, the last harvest resulted in the highest anthocyanin content in peel, flesh and whole fruit, whereas no significant effects could be observed for quercetin glycosides, and total carotenoids decreased over time. The highest content of bound phenolics (30% of total amount) could be found in BD flesh. Between 53% and 59% of quercetin glycosides and anthocyanins were released from QG after the gastric and small intestinal digestion procedure, whereas the release of carotenoids ranged between 4–6%. A relative high release of anthocyanins and quercetin glycosides could be observed from QG which may result in a higher gastro-intestinal absorption rate of these compounds. However, follow-up studies (clinical trials) are warranted to investigate the in vivo bioavailability and subsequently biological activity of QG.
Keyword Japanese plums
In vitro digestion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
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Created: Mon, 23 Mar 2015, 15:33:59 EST by Michael Netzel on behalf of Qld Alliance for Agriculture and Food Innovation