Nutritional Characteristics and Bioactive Compounds in Australian Native Plants: A Review

2017 ◽  
pp. 223-236
Author(s):  
David J. Williams ◽  
Mridusmita Chaliha
Keyword(s):  
Bioactive Compounds ◽  
Native Plants ◽  
Nutritional Characteristics ◽  
Australian Native Plants

scholarly journals The Use of a Micro Near Infrared Portable Instrument to Predict Bioactive Compounds in a Wild Harvested Fruit—Kakadu Plum (Terminalia ferdinandiana)

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1413
Author(s):  
Eshetu Bobasa ◽  
Anh Dao T. Phan ◽  
Michael Netzel ◽  
Heather E. Smyth ◽  
Yasmina Sultanbawa ◽  
...  
Keyword(s):  
Vitamin C ◽  
Bioactive Compounds ◽  
Ellagic Acid ◽  
Near Infrared ◽  
Wide Range ◽  
Fruit Samples ◽  
Nutritional Characteristics ◽  
Analytical Quantification ◽  
Kakadu Plum ◽  
Terminalia Ferdinandiana

Kakadu plum (KP; Terminalia ferdinandiana Exell, Combretaceae) is an emergent indigenous fruit originating from Northern Australia, with valuable health and nutritional characteristics and properties (e.g., high levels of vitamin C and ellagic acid). In recent years, the utilization of handheld NIR instruments has allowed for the in situ quantification of a wide range of bioactive compounds in fruit and vegetables. The objective of this study was to evaluate the ability of a handheld NIR spectrophotometer to measure vitamin C and ellagic acid in wild harvested KP fruit samples. Whole and pureed fruit samples were collected from two locations in the Kimberley region (Western Australia, Australia) and were analysed using both reference and NIR methods. The standard error in cross validation (SECV) and the residual predictive deviation (RPD) values were 1.81% dry matter (DM) with an RPD of 2.1, and 3.8 mg g−1 DM with an RPD of 1.9 for the prediction of vitamin C and ellagic acid, respectively, in whole KP fruit. The SECV and RPD values were 1.73% DM with an RPD of 2.2, and 5.6 mg g−1 DM with an RPD of 1.3 for the prediction of vitamin C and ellagic acid, respectively, in powdered KP samples. The results of this study demonstrated the ability of a handheld NIR instrument to predict vitamin C and ellagic acid in whole and pureed KP fruit samples. Although the RPD values obtained were not considered adequate to quantify these bioactive compounds (e.g., analytical quantification), this technique can be used as a rapid tool to screen vitamin C in KP fruit samples for high and low quality vitamin C.

Overview of Australian Native Plants

2017 ◽  
pp. 1-4
Author(s):  
Amanda Garner ◽  
La Vergne Lehmann
Keyword(s):  
Native Plants ◽  
Australian Native Plants

Suberization and adventitious rooting in Australian plants

1984 ◽  
Vol 32 (4) ◽  
pp. 363 ◽  
Author(s):  
RR Williams ◽  
AM Taji ◽  
JA Boltton
Keyword(s):  
Root Formation ◽  
Woody Plant ◽  
Native Plants ◽  
Adventitious Rooting ◽  
The Other ◽  
Other Hand ◽  
Australian Native Plants

Controversy has existed over the involvement of sclerified tissues in the inhibition of adventitious rooting on woody plant cuttings. This study of 16 species of Australian native plants shows no correlation between stem sclerification and poor root formation. On the other hand, poor rooting was correlated with suberization of the cortex and it is suggested that this rather than sclerification may be a factor in the inhibition of root formation.

scholarly journals The Influence of Different Pre-Treatments on the Quality and Nutritional Characteristics in Dried Undersized Yellow Kiwifruit

2020 ◽  
Vol 10 (23) ◽  
pp. 8432
Author(s):  
Cinzia Mannozzi ◽  
Urszula Tylewicz ◽  
Silvia Tappi ◽  
Marco Dalla Rosa ◽  
Pietro Rocculi ◽  
...  
Keyword(s):  
Electric Fields ◽  
Bioactive Compounds ◽  
Osmotic Dehydration ◽  
Drying Time ◽  
Production Chain ◽  
Processing Technologies ◽  
Dpph Method ◽  
Nutritional Characteristics ◽  
Different Temperatures ◽  
Good Retention

Undersized kiwifruits are considered waste; therefore, there is a need to develop sustainable processing technologies for their valorization, in order to have a positive economic impact on their entire production chain. Therefore, the aim of this study was to apply pulsed electric fields (PEF) combined with osmotic dehydration (OD) and air drying (AD) to develop a novel yellow kiwifruit dried snack with high nutritional functionality. In particular, the effect of the different pre-treatments, PEF (200 V/cm) and/or OD (trehalose at 40%), on the color, bioactive compounds content and antioxidant activity (AA) was evaluated on kiwifruit chips air-dried at three different temperatures (50, 60, 70 °C). The results showed that better color maintenance was observed at the drying temperature of 60 °C. Concerning the bioactive compounds, a good retention in total polyphenols (TP), vitamin C content and AA with the DPPH method was obtained on OD and PEF kiwifruit dried snacks, similar to that of control samples. Instead, the ABTS method showed the best AA in PEF and OD/PEF samples. In general, a shorter drying time in the OD- and PEF-treated samples could contribute to the higher sustainability of the process.

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