Browsing by Issue Date, starting with "2023-08"
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- Nutraceuticals based on portuguese grape pomaces as a potential additive in food productsPublication . Ferreira da Vinha, Ana; Silva, Carla Sousa e; Sousa, Gonçalo de Magalhães e; Moutinho, Carla; Brenha, João; Sampaio, RicardoPortuguese wine industry by-products are often undervalued but constitute a potential source of bioactive phenoliccompounds that can be applied as a natural additive in several industries. In this context, the present study aimed to evaluate the nutritional composition, and the phenolic profile of two Portuguese Vitis vinifera L. grape pomaces (Touriga Nacional (red variety) and Alvarinho (white variety), and to correlate their chemical characterizations with their antioxidant activities. Strong correlations were observed between the presence of phenolic compounds and antioxidant activities, which enhances the application of pomace extracts in food and pharmaceutical areas. The high content of total phenolic compounds (25 - 41 g/ kg dry extract) and of flavonoids (9.2 - 18 g/ kg dry extract) found in both samples make these pomaces excellent candidates as food additives in food products, as well as antioxidant agents, such as natural dyes. Some polyphenols were identified by High Performance Liquid Chromatography (HPLC), being rutin and catequin the highest compounds found in red grape pomace (Touriga Nacional) while quercetin was only quantified in white grape pomace (Alvarinho). Cis-resveratrol was quantified in both grape pomace, which opens horizons for its use since this compound has considerable chemopreventive effects in the three main gains of carcinogenesis. As expected, the anthocyanin content was significantly higher in red grape pomace (37 g/ kg dry extract), emphasizing its interest as a natural food additive. Based on the findings, it is possible to conclude that these by-products have additional value, making them potentially useful in the food, pharmaceutical, and cosmetic industries.
- Mapping universities-communities partnerships in the delivery of the sustainable development goalsPublication . Leal Filho, Walter; Dibbern, Thais; Trevisan, Laís Viera; Cristofoletti, Evandro Coggo; Dinis, Maria Alzira Pimenta; Matandirotya, Newton; Sierra, Javier; Shulla, Kalterina; Buttriss, Gary; Decosta, Patrick L’Espoir; Mbah, Marcellus; Sanni, MarufThe establishment of partnerships between universities and communities can significantly support the implementation of initiatives related to sustainability as a whole and help to realize some of the United Nations Sustainable Development Goals Despite the usefulness of mapping of partnerships, there is a perceived necessity for studies, which may shed some light on these interactions, and the many advantages they offer. Against this background, this paper reports on a study which has assessed the extent to which partnerships between universities and communities may assist in achieving the SDGs. Methodologically, by means of a bibliometric analysis and the use of a set of enlightening case studies, the paper introduces some of the partnerships being implemented today and draws the lessons learned, which may be helpful in future initiatives. A total of eight initiatives are presented and discussed during the paper. The results suggest that more joint efforts are needed, as part of efforts to accelerate the implementation of the SDGs at the university level, including a list of measures that Higher Education Institutions (HEIs) could apply to address those goals. Overall, this research contributes to the sustainability area by providing empirical evidence, insights, and recommendations for fostering partnerships between universities and communities. It adds to the existing body of knowledge and understanding of how collaborative efforts can contribute to sustainable development and the achievement of the SDGs.
- On the (melting) rocks: climate change and the global issue of permafrost depletionPublication . Leal Filho, Walter; Dinis, Maria Alzira Pimenta; Nagy, Gustavo J.; Fracassi, UmbertoThis short communication reports on the pressures posed by climate change on permafrost. The phenomenon of the (melting) rocks, soil, and ground that host permafrost does not just concern a remote stretch of the Arctic north. It is a far larger area than most citizens may realise if looking at an ordinary map projection. Broadly distributed and crucial as it is for the Earth's climate, permafrost thawing due to climate change can affect or upend several aspects associated with life and prosperity on Earth, demanding far greater attention. The loss of permafrost is a global problem that requires a global solution. Greenhouse gas emissions (GHG) must be reduced to slow permafrost's thawing and negative impacts. As such, this short communication aims to catalyse a global debate on this climate change consequential issue, also providing specific suggestions for reducing the impacts of permafrost depletion.