Consumer Knowledge and Acceptance of "Algae" as a Protein Alternative: A UK-Based Qualitative Study

Moving towards novel and sustainable foods: Investigating consumers' intention to consume algae-based foods in a developing country

The world's growing population is putting immense pressure on natural resources and food security. Algae, as a sustainable and nutrient-rich alternative protein source, have gained attention due to their lower environmental impacts and potential health benefits. However, consumer acceptance remains a key challenge, especially in developing countries where awareness is limited. This study investigates the factors influencing Iranian consumers' willingness to consume algae-based foods through the Theory of Planned Behavior (TPB). A survey involving 445 respondents from Mashhad, Iran, was conducted, and the data were analyzed using structural equation modeling. The findings reveal that attitude has the strongest influence on consumption intention, followed by food disgust, subjective norms, knowledge, moral norms, and environmental concerns. Attitude also mediates the relationships between the constructs of disgust, moral norms, knowledge, and environmental concerns with consumption intention. Furthermore, the findings indicate that attitude constitutes the fundamental mechanism of the relationship between knowledge, environmental concerns, and intention. On the other hand, moral norms confirm the existence of a relationship between the subjective norms construct and consumption intention, such that moral norms shape the fundamental mechanism of the relationship between subjective norms and attitude, emphasizing the profound influence of moral values in Iranian consumption culture. In contrast, food neophobia did not have a significant impact on consumption intentions, indicating an openness towards dietary innovations among Iranians. This research contributes to the theoretical advancement in this field by identifying the direct, indirect, and total effects of the extended Theory of Planned Behavior components on the decision to consume algae or algae-containing foods. Practically, the findings from this study can provide guidance for effective introduction and promotion strategies of algae-based food products in emerging markets.

Dairy, Plant, and Novel Proteins: Scientific and Technological Aspects

Alternative proteins have gained popularity as consumers look for foods that are healthy, nutritious, and sustainable. Plant proteins, precision fermentation-derived proteins, cell-cultured proteins, algal proteins, and mycoproteins are the major types of alternative proteins that have emerged in recent years. This review addresses the major alternative-protein categories and reviews their definitions, current market statuses, production methods, and regulations in different countries, safety assessments, nutrition statuses, functionalities and applications, and, finally, sensory properties and consumer perception. Knowledge relative to traditional dairy proteins is also addressed. Opportunities and challenges associated with these proteins are also discussed. Future research directions are proposed to better understand these technologies and to develop consumer-acceptable final products.

The Effect of Vice-Virtue Bundles on Consumers' Purchase Intentions for Vice Packaged Foods: Evidence from Randomized Experiments

Packaged foods have significantly expanded their market presence, with the utilization of vice-virtue bundles gaining momentum, particularly in the realm of vice-packaged foods. Consequently, understanding how consumers respond to vice-packaged food with vice-virtue bundles (i.e., vice-packaged food combined with virtue ingredients) becomes crucial. This research investigates this issue through four experiments employing a one-way between-subjects design, incorporating distinct stimuli and measures, and involving samples from diverse sources. In Experiment 1 (n = 172), Experiment 2 (n = 169), and the follow-up experiment (n = 153), variance analysis, chi-square test, and mediating analysis demonstrate that consumers are more inclined to purchase vice-packaged food with vice-virtue bundles owing to the perception of it being healthier than vice packaged food with vice-virtue bundles. Furthermore, Experiment 3 (n = 249) employs moderated mediation analysis, uncovering that both the heightened purchase intention for vice-packaged food with vice-virtue bundles and the mediating effect of perceived healthiness are attenuated among consumers with prevention (vs. promotion) focus. Beyond contributing to theories on packaged food consumption, vice-virtue bundles, and regulatory focus theory, these findings hold practical implications for packaged food marketing, promoting rational food choices, and enhancing healthier diets.

Fungal Contamination in Microalgal Cultivation: Biological and Biotechnological Aspects of Fungi-Microalgae Interaction

In the last few decades, the increasing interest in microalgae as sources of new biomolecules and environmental remediators stimulated scientists’ investigations and industrial applications. Nowadays, microalgae are exploited in different fields such as cosmeceuticals, nutraceuticals and as human and animal food supplements. Microalgae can be grown using various cultivation systems depending on their final application. One of the main problems in microalgae cultivations is the possible presence of biological contaminants. Fungi, among the main contaminants in microalgal cultures, are able to influence the production and quality of biomass significantly. Here, we describe fungal contamination considering both shortcomings and benefits of fungi-microalgae interactions, highlighting the biological aspects of this interaction and the possible biotechnological applications.