Ana Paula Provin

Sustainability, aligned with the principles of the Circular Economy, emerges as an alternative for waste reduction and the mitigation of environmental impacts. In the banana cultivation sector, large quantities of pseudostems are discarded after harvest, representing not only an environmental chal-lenge but also an opportunity for the production of sustainable textile fibers. Simultaneously, the tex-tile industry, one of the most polluting in the world, demands innovative solutions to reduce the consumption of natural resources, as well as the emission of pollutants and greenhouse gases. Based on an integrative literature review, this study examines the feasibility of a Circular Business Model (CBM) designed for smallholder farmers, utilizing banana crop residues for textile production. The final review portfolio consisted of 46 scientific articles, selected based on relevance, temporal scope, and methodological rigor. The results indicate that this approach can mitigate environmental impacts, create new income opportunities, and strengthen the circular bioeconomy. Furthermore, the adoption of this model fosters symbiosis between sectors, promoting integration between agriculture and the textile industry in the pursuit of more sustainable solutions. Ultimately, the transition toward a more responsible production model aligns with international initiatives and regulations that promote biomaterials and reduce dependence on synthetic fibers.

Frugal innovation (FI) is a recent topic in the scientific literature and it was introduced in relation to management studies. According to scholars, FI is a promising way to serve low-income people who cannot afford conventional products, especially those in developing countries, and to address the urgent need to rethink how resources can be used effectively to operate a sustainable business in the emerging global scenario. This systematic literature review article investigates how the use of qualitative research in studies on FI can contribute to the theory and applicability of FI in society. Searches were conducted in the Scopus, ScienceDirect, SpringerLink and Web of Science databases. After surveying and sorting the documents found, 61 research articles dealing with the various aspects and concepts of FI and addressing the use of qualitative research were selected for this literature review.

The period from 2019 to 2022 has been defined by the COVID-19 pandemic, resulting in an unprecedented demand for and use of Personal Protective Equipment (PPE). However, the disposal of PPE without considering its environmental impact and proper waste management practices has become a growing concern. The increased demand for PPE during the pandemic and associated waste management practices have been analyzed. Additionally, the discussion around treating these residues and exploring more environmentally friendly alternatives, such as biodegradable or reusable PPE, is crucial. The extensive use of predominantly non-degradable plastics in PPE has led to their accumulation in landfills, with potential consequences for marine environments through the formation of microplastics. Therefore, this article seeks to establish a connection between these issues and the Sustainable Development Goals, emphasizing the importance of efficient management aligned with sustainable development objectives to address these emerging challenges and ensure a more sustainable future.

The years 2019 to 2022 are being marked by the pandemic resulting from a viral infection, COVID-19. The demand and use of PPE has never been so high and it is often discarded without considering the correct disposal route and the environmental impact that this type and volume of waste can generate. The aim of this study was to analyze the increased demand for PPE used during the pandemic and, consequently, the generation of these wastes. In addition to this analysis, it is extremely important to raise the discussion about the treatment of these residues and the possibilities of more ecological personal protection equipment, such as biodegradable or reusable ones. The extensive use of PPE, which is mostly plastics and is not easily degraded, mainly leads to its accumulation in landfills but, if disposed of incorrectly, it could reach marine environments, contributing to the formation of microplastics in the oceans. Therefore, this article also aims to relate these themes to the Sustainable Development Goals, as efficient management aligned with sustainable development goals is essential to mitigate these anticipated problems and ensure a more sustainable future.

In recent years, several researchers have focused their studies on the development of sustainable biomaterials using renewable sources, including the incorporation of living biological systems. One of the best biomaterials is bacterial cellulose (BC). There are several ways to produce BC, from using a pure strain to producing the fermented drink kombucha, which has a symbiotic culture of bacteria and yeasts (SCOBY). Studies have shown that the use of agricultural waste can be a low-cost and sustainable way to create BC. This article conducts a literature review to analyze issues related to the creation of BC through kombucha production. The databases used were ScienceDirect, Scopus, Web of Science, and SpringerLink. A total of 42 articles, dated from 2018 to 2022, were referenced to write this review. The findings contributed to the discussion of three topics: (1) The production of BC through food waste (including patents in addition to the scientific literature); (2) Areas of research, sectors, and products that use BC (including research that did not use the kombucha drink, but used food waste as a source of carbon and nitrogen); and (3) Production, sustainability, and circular economy: perspectives, challenges, and trends in the use of BC (including some advantages and disadvantages of BC production through the kombucha drink).