https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54999 Wed 27 Mar 2024 16:39:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48605 Wed 22 Mar 2023 09:01:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43987 Wed 05 Oct 2022 14:36:22 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38104 Wed 04 Aug 2021 17:41:28 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47992 Leptospermum petersonii is an aromatic native Australian plant that has been traditionally used as a medicine and a tea; however, its application in food products is increasing. The aim of this study was to investigate the most suitable and energy-efficient drying conditions to retain phenolic compounds, antioxidant properties, and, color in dried Leptospermum petersonii leaves. In this study, six drying techniques were investigated including hot air, vacuum, microwave, freeze, sun, and shade. Results showed that freeze-drying retained maximum color, phenolic compounds, and, antioxidant capacity, however, it consumed the most time and energy. Conversely, microwave drying (960 W, 0.1 hr) used the least amount of time and energy yet retained the second-highest levels of phenolics and antioxidant capacity. In conclusion, microwave drying is suggested for large-scale drying. This method is economical and it is approximately 480 times and 1,700 times more time and energy efficient compared to freeze-drying.]]> Tue 14 Feb 2023 15:04:58 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40628 Thu 11 Aug 2022 11:14:14 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46060 0.05). Thus, soaking is not required for the ETHOS X extraction of polyphenols from LSTT leaves. RSM was successfully applied to explore the impact of ETHOS X extraction conditions and optimize the extraction conditions. Radiation time significantly affects the recovery yield of phenolics (p < 0.05) positively, whereas irradiation power and sample to solvent ratio adversely influenced the extraction yields of phenolics. The optimal ETHOS X extraction conditions were: radiation time of 60 min, irradiation power of 600 W, and sample to solvent ratio of 2 g/100 mL. Under these conditions, 119.21 ± 7.09 mg of phenolic, 85.31 ± 4.55 mg of flavonoids, and 137.51 ± 12.52 mg of proanthocyanidins can be extracted from a gram of dried LSTT leaves. In comparison with UAE and SWB, ETHOS X is not more effective for the extraction of phenolics than UAE and SWB. However, this technique can save half of the solvent volume compared to UAE and SWB techniques.]]> Thu 10 Nov 2022 11:28:04 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48225 Sat 11 Mar 2023 12:44:06 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49707 Mon 29 May 2023 13:00:57 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54944 Fri 22 Mar 2024 15:20:51 AEDT ]]>