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Open AccessArticle

Nutritional Value and Antimicrobial Activity of Pittosporum angustifolium (Gumby Gumby), an Australian Indigenous Plant

1
ARC Industrial Transformation Training Centre for Uniquely Australian Foods, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Coopers Plans 4108, Australia
2
Department of Food Technology, Faculty of Agriculture, Can Tho University, Can Tho 94000, Vietnam
3
Health Support Queensland, Queensland Health Department, Coopers Plans 4108, Australia
*
Authors to whom correspondence should be addressed.
Foods 2020, 9(7), 887; https://doi.org/10.3390/foods9070887
Received: 29 May 2020 / Revised: 30 June 2020 / Accepted: 1 July 2020 / Published: 6 July 2020
The indigenous endemic plant P. angustifolium has received attention for nutraceutical and therapeutic applications in Australia. This study investigates for the first time the nutritional value (macro- and micronutrients, minerals, trace elements, polyphenols, carotenoids, saponins and antioxidant capacity) and antimicrobial activity of different botanical parts of P. angustifolium, either collected from the wild or cultivated. Different botanical tissues, geographic location and growing condition (wild vs. cultivated) showed significant (p < 0.05) effects on the tested bioactive compounds, with the leaves having significantly (p < 0.05) higher levels than the stems. Saponins and polyphenols could be identified as the main bioactive compounds in the leaves with up to 4% per dry weight. The extracts of P. angustifolium leaves and stems showed strong antioxidant and antimicrobial activities, especially against Candida albicans. These activities correlated (R2 = 0.64–0.92; p < 0.05) with the levels of polyphenols and saponins, indicating their biologic potential. Findings from this study may provide information for future applications of P. angustifolium in the functional ingredient or nutraceutical industry. View Full-Text
Keywords: Gumby Gumby; Australian indigenous plant; nutrients; bioactive compounds; antimicrobial activity Gumby Gumby; Australian indigenous plant; nutrients; bioactive compounds; antimicrobial activity
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MDPI and ACS Style

Phan, A.D.T.; Chaliha, M.; Hong, H.T.; Tinggi, U.; Netzel, M.E.; Sultanbawa, Y. Nutritional Value and Antimicrobial Activity of Pittosporum angustifolium (Gumby Gumby), an Australian Indigenous Plant. Foods 2020, 9, 887. https://doi.org/10.3390/foods9070887

AMA Style

Phan ADT, Chaliha M, Hong HT, Tinggi U, Netzel ME, Sultanbawa Y. Nutritional Value and Antimicrobial Activity of Pittosporum angustifolium (Gumby Gumby), an Australian Indigenous Plant. Foods. 2020; 9(7):887. https://doi.org/10.3390/foods9070887

Chicago/Turabian Style

Phan, Anh D.T.; Chaliha, Mridusmita; Hong, Hung T.; Tinggi, Ujang; Netzel, Michael E.; Sultanbawa, Yasmina. 2020. "Nutritional Value and Antimicrobial Activity of Pittosporum angustifolium (Gumby Gumby), an Australian Indigenous Plant" Foods 9, no. 7: 887. https://doi.org/10.3390/foods9070887

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