Effect of dietary supplementation of lauric acid on growth performance, antioxidative capacity, intestinal development and gut microbiota on black sea bream (Acanthopagrus schlegelii)

A feeding trial of eight weeks was conducted to examine the influence of food supplementation with lauric acid (LA) on Acanthopagrus schlegelii (juvenile black sea bream). A 24 percent fish meal baseline diet was created, while the other two diets were generated with dietary supplementation of graded points of LA at 0.1 percent and 0.8 percent, respectively. Each diet was given a triplicate tank with 20 fish weighing 6.22 ± 0.19 g. In comparison with the control group, the weight gain rate, growth rate, as well as feed efficiency of fish fed of 0.1 percent diet of LA were considerably (P < 0.05) greater. The total body and dorsal muscle proximate compositions did not change significantly between groups (P > 0.05). Triglyceride (TG) content was considerably (P < 0.05) greater in the LA-supplemented meals eating group in comparison with the control group. In the group eating LA-supplemented meals, the height of villus and the number of goblet cells/villus were considerably (P < 0.05) larger. The microbial makeup of the gut was also studied. The differences in phyla, class, and family level were not statistically significant (P > 0.05). Firmicutes in the phylum, Betaproteobacteri, Gammaproteobacteria, and Clostridia in the class, and Clostridiaceae in the family were all substantially increased with higher levels of LA supplementation (P < 0.05). According to the findings of this study, an LA-supplemented diet improves fish development, antioxidative capability, gut microbiota and intestinal health.

Influence of Food Matrices and the Population of Interfering Microorganisms on the Determination of Listeria monocytogenes by Conventional Methods and VIDAS

In this study, the possible influence of the food matrix and the interfering population of microorganisms on the detection and count of Listeria monocytogenes in three common foods of the Spanish diet (Spanish omelette, fresh cheese and vegetable salad) was determined. Four groups were assayed: one control, two groups with interfering microorganisms (Salmonella Enteritidis, Staphylococcus aureus and Proteus mirabilis) with different levels of L. monocytogenes and a final group only contaminated with L. monocytogenes. The samples were analyzed with the normalized method (UNE-EN ISO 11290:2018) and with an alternative technique (VIDAS). The results show that the presence of interfering microorganisms did not seem to interfere with the determination of L. monocytogenes. Furthermore, the type of food did not seem to influence the determination of L. monocytogenes, but the culture media used showed differences. In fact, regardless of the type of food, the ALOA medium showed higher sensitivity than the other media, with higher recovery in 100% of samples (only for the Spanish omelette in Group B was the result the same as that for PALCAM, −8.11 log cfu/g). The results obtained using the VIDAS were not influenced by any of the factors or conditions used and show 100% efficiency.

Pengujian efek kualitas dan risiko keamanan pada intensi pembelian makanan dengan mediasi traceability

There are several consumer considerations in buying and consuming food such as the quality and safety of the food and traceability of the food itself. This study examines the effect of food quality and perception of food risk on purchase intention. We also examine mediating effect of traceability in the influence of quality and safety on consumer purchase intentions. The survey was conducted online to obtain data consisting of 100 fast food consumers. The research hypothesis testing was carried out using SmartPLS statistical software. The results showed food quality and perception of food risk have significant influence on purchase intention. However, there was no mediating effect of traceability in the influence of food quality and safety on consumer purchase intentions. This research theoretically expands the literature in the field of consumer behavior, particularly related to food marketing. The results of this study can practically be used as a basis for formulating food marketing strategies, especially related to steps that can be used to maintain food quality, safety, and traceability as an effort to increase consumer purchase intentions.

Chapter 4: Russia’s Food Security and Impact on Agri-Food Trade

Russia’s food policy has been defined by the quest for food security for more than a decade, which in the Russian context includes import protectionism, self-sufficiency, and import substitution, marked by the adoption of Food Security Doctrines in 2010 and 2020. This chapter first investigates the impact of food security policy on domestic production. Food security policy has combined with an increase in state support for domestic production, leading to notable increases in output and self-sufficiency for selected commodities. The chapter also examines the impact of food security on agri-food exports, which have become a priority since 2018. Although Russia has become a leading exporter of wheat, the influence of food security is seen by the introduction of export quotas on grain starting in 2020. Despite protectionism, Russia has not withdrawn from the international food market but rather is an active and significant player as both food importer and exporter.

Labelling or not: influence of food retailer's approaching the expiration date labelling on consumers' patronage intention

PurposeThe purpose of this paper is to investigate the influence of food retailer's Approaching the Expiration Date (AED) labelling on consumers' retailer-related response. Specifically, the main effect of food retailer's AED labelling on consumers' patronage intention, the mediation effect of food retailer's concern for consumers and the boundary condition of this effect are explored. The selected context of research is that food retailers are reluctant to stick an AED label on nearly expired food due to negative effect on selling them.Design/methodology/approachTwo separate pretests and two separate experiments have been conducted to investigate the influence of food retailer's AED labelling on patronage intention. Pretest 1 develops the stimulus material of food retailer's AED labelling. Study 1 investigates the influence of AED labelling on patronage intention and mediation effect of consumers' perception of retailer's concern for consumers. Pretest 2 develops the stimulus material of government regulation on food retailer's AED labelling. Study 2 explores the boundary condition of the positive effect, namely the moderation effect of whether retailer's AED labelling is voluntary or mandatory.FindingsThe main findings of this research highlight the positive influence of food retailer's AED labelling on consumers' patronage intention. In addition, the current research reveals the underlying mechanism food retailer's concern for consumers and the boundary condition whether the AED labelling is voluntary or mandatory.Originality/valueAlthough previous researches has explored the effect of food retailer's AED labelling on consumers' response, most of them focus on consumer purchase intention of the nearly expired food and neglect its effect on consumers' food retailer-related response. It is a need for food retailer to explore the potential positive influence of food retailer's AED labelling on consumers' patronage intention.

Not just food: Exploring the influence of food blog engagement on intention to taste and to visit

PurposeThe present study investigates the impact of perceived enjoyment, blogger credibility and homophily on readers' engagement. Moreover, the study investigates the role exerted by blog engagement on intentions to follow blogger's recommendations. Despite the growing relevance of these issues, past studies have neglected the relevance of a joint analysis of such dimensions within the context of food blogs.Design/methodology/approachThe empirical research builds on an online survey with a sample of 821 blog readers (353 Italian and 468 American). The proposed model was tested through structural equation modelling.FindingsResults from a survey on Italian and American consumers show that perceived enjoyment and homophily have a significant effect on blog engagement, which, in turn, positively influences both intention to taste and visit. Moreover, blogger credibility does not show a significant influence on blog engagement for Italian and American followers.Originality/valueThe study contributes to a better understanding of the influence exerted by blog engagement on intention to follow blogger's recommendations. The study also examines perceived enjoyment, credibility and homophily as antecedents of engagement, which have not been extensively researched in the past with respect to food blogs.