https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47695 Wed 25 Jan 2023 08:49:55 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:36239 Tue 17 Mar 2020 12:32:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21347 Sat 24 Mar 2018 07:51:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27402 Phyllanthus amarus (P. amarus) has been used as a herbal medicine, particularly for liver support, in many countries and its extracts have been shown to possess potent antioxidant and anticancer properties in vitro. The preparation of dried sample is crucial for further extraction and isolation of phytochemicals. In this study, the effects of six different drying methods (hot air, low-temperature air, infrared, microwave, sun, and vacuum drying) on the phytochemical yield and antioxidant capacity were determined to identify the optimal drying method for P. amarus. The results showed that different drying methods, as well as different drying conditions within each method, significantly affected phytochemical yield and antioxidant capacity of P. amarus extracts. Infrared drying at 30°C was the best method for both retention of bioactive compound yield and antioxidant capacity of P. amarus extract, with 12 compounds were identified. In contrast, low-temperature-air drying at 25°C not only required the longest drying time but also significantly reduced the levels of bioactive compounds and antioxidant capacity of P. amarus. Therefore, infrared drying at 30°C is suggested for drying P. amarus for subsequent assessment of bioactivity.]]> Sat 24 Mar 2018 07:34:08 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25540 Sat 24 Mar 2018 07:26:05 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:4895 Sat 24 Mar 2018 07:22:57 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23468 Sat 24 Mar 2018 07:13:01 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40415 Cupaniopsis anacardioides) is an Australian native tree, possessing high level bioactivity and antioxidant activity. To prevent deterioration of active constituents, appropriate drying practices must be determined. This study comparatively evaluates the impact of a range of drying methods including freeze-, microwave-, vacuum-, hot air- and sun-drying on the physical, phytochemical and antioxidant characteristics of Tuckeroo fruit. Experimental results showed that the five drying methods had significant impact on the physicochemical properties and antioxidant activity of the fruits. Of the drying methods assessed, freeze drying best preserved Tuckeroo activity, recording higher total phenolic content (TPC) (81.88 mg gallic acid equivalent (GAE)/g), total flavonoids (TFC) (107.71 mg catechin equivalent (CAE)/g), proanthocyanidins (TPro) (83.86 mg CAE/g) and exhibited the strongest antioxidant capacity. However, vacuum drying at 65 kPa, 100 ℃ for 5 h is recommended for drying Tuckeroo fruits for further processing in a large scale as it also retained high levels of TPC, TFC and TPro (58 mg GAE/g, 91 mg CAE/g and 74 mg CAE/g, respectively).]]> Mon 11 Jul 2022 14:44:41 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33748 Mon 07 Jan 2019 10:45:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33403 Fri 26 Oct 2018 16:01:42 AEDT ]]>