• Energy Research

Blockchain is seen as a disruptive fundamental technology that will transform agri-food sectors in the near future. Blockchain is a digital, immutable, decentralized ledger of transactions that is replicated and distributed throughout the chain of computer systems on the blockchain's network. This systematic review examines the literature to identify the enabling characteristics of blockchain technology that support its application in the agri-food sectors. The literature reviewed indicated essential characteristics such as transparency, immutability, redundancy, versatility, automation, and remittance. Among these features, immutability and automation have a salient role in the current implementation, particularly in food traceability. However, the application of blockchain in the agri-food sector is not without controversies. More research is needed regarding technical improvement and its environmental impact.

This study examines the extant state of research into our understanding of the impact of the coronavirus pandemic in its early stages on food-purchasing behaviour. As such, it includes a summary and categorisation of the findings, extending to consumption preferences worldwide. After the indiscriminate stockpiling of food, which was witnessed in many countries following the implementation of the lockdown, the impact of COVID-19 (COronaVIrus Disease-2019) on consumer habits has inversely varied in function of personal attitudes, individual and household experiences, and characteristics. Specific contexts, and the financial, economic, and logistic nature of these contexts, have also been found to be of relevance in examining the research relating to the coronavirus pandemic and food-purchasing behaviour. Concurrent with the pandemic, some worldwide trends have emerged—home cooking has been rediscovered, leading to an increase in the demand for staple foodstuffs, and purchases from small, local retailers and online food shopping have been accorded preferential treatment. Despite price volatility and concern about future household incomes, a significant proportion of consumers have shifted to buying healthier, more sustainable food. Moreover, food wastage has seen a notable decrease in volume. Such an occasion should be strategically exploited by manufacturers and retailers in satisfying this consumer demand. Finally, the COVID-19 crisis would seem to offer an unparalleled opportunity to re-engineer the agro-food market by driving the transition toward more sustainable supply and production patterns. Thus, stronger and more equitable partnerships between farmers, manufacturers, retailers, and citizens may be in the process of being forged.

A transition towards a circular economy within the agri-food sector requires the improvement of efficiency in resource utilization, the prevention of food loss or waste, whilst adopting regenerative agricultural practices. In addition to the technical challenges, the agri-food industry needs to address the food safety concerns resulting from biomass recycling processes. Increasingly, blockchain technology is gaining traction, moving towards more sustainable and precision agriculture. The blockchain is a decentralized, immutable, and shared database that records the provenance of digital assets, making it a suitable platform for traceability and food supply chain management. Despite its growing importance, the existing literature regarding these themes and the empirical evidence of blockchain-based solutions for a circular economy is rather fragmented. This paper offers a scoping review regarding the role of blockchain technology in the transition towards a circular food system. A total of 44 papers published in peer-reviewed journals were reviewed to identify new scientific insights into the application of blockchains within the agricultural sector. The results indicate that blockchain technology has a great potential in reducing food loss through optimized eco-efficiency (e.g., digitalization and integration with the Internet of Things) and by alleviating asymmetric information (by increasing transparency and reducing dependence on intermediaries). However, in the case of recycling efficiency, despite its potential, there remains a paucity of evidence regarding the use of blockchain technology in improving the residual valorization processes. Furthermore, there is a stream of literature focusing on the ability of blockchain-enabled traceability (e.g., for organic production or supply chain management). Yet, the role of blockchain traceability in the monitoring of risks from recycled biomass and the reporting of the sustainability performance in the supply chain has received scant attention within research literature. These results provide insights for supply chain management operations with the view of shifting towards a circular economy whilst also suggesting an agenda for future research areas.

Fruit and vegetables play a crucial role in ensuring food and nutrition security, and developing more sustainable value chains in agriculture and the agri-food sector. To support a greater supply of fruit and vegetables, small farmers’ production is fundamental and needs to be integrated into stable value chains to maintain market, logistics and quality conditions. This article develops a theoretical framework based on the conditions, strategies and performances of supply chain systems, combined with the elicitation of expert opinion, to identify key variables for the specific analysis of fruit and vegetable supply chains. Empirical data was retrieved from eight supply chains in five Mediterranean countries to identify the most relevant issues related to their conditions, strategies and performances. Three different types of supply chains were included: 1) Short food supply chains, 2) Green public procurement, and 3) Exportoriented supply chains. This research made it possible to identify key indicators for the analysis of fruit and vegetable supply chain system dynamics. The variables identified in this study may contribute to prospective research for the assessment of fruit and vegetable supply chain sustainability and to the development of policies that encourage the adoption of environmentally-friendly and socially-responsible practices, thus contributing to the long-term sustainability of Mediterranean fruit and vegetables supply chains.

Food loss and waste are two of the many problems that modern society is facing. To date, among many solutions, the circular economy is the one prevailing. A successful transition toward a circular economy (CE) requires the food sector to overcome the challenges of today’s complex food supply chains such as information asymmetry, poor cooperation among stakeholders, and concerns about food safety. Blockchain, a form of distributed ledger technology, has been progressively gaining traction in supply chains in areas like data management, certifying product provenance and tracking products. Despite its importance, knowledge around the potential of the blockchain technology in facilitating the transition towards a circular economy in the agri-food sector is fragmented. This review provides evidence-based insights into the blockchain implementations in the food supply chains and the implications for CE. Our findings indicated four major areas that blockchain could accelerate CE in the agri-food sector: improving data utility; supply chain management efficacy; enhanced eco-efficiency; and superior traceability.

For some types of seafood, such as clams, there are now sustainability certificates that guarantee their sustainable production. However, their consumption may be associated with some ethical and sustainability concerns, as clams are harvested in ways that may be harmful to the environment. The aim of this study is therefore to investigate consumers’ sustainability concerns based on their purchasing preferences and WTP for clams with sustainability certification in three Mediterranean countries—Italy, Spain and Croatia. Data were collected online and consumer preferences were elicited using a labelled discrete choice experiment. The results show that in general all consumers prefer clams from their country of origin, while there are differences in their appreciation for the sustainability certification. While Croatian consumers are not very interested in the current Marine Stewardship Council (MSC) sustainability certification, consumers in Spain are willing to pay a higher price for it. At the same time, consumers in Italy are more interested in new certifications such as Responsible Fisheries Management (RFM). These results could be of interest to clam production and distribution companies trying to advance their corporate social responsibility activities and positioning.