Entomophagy Research Articles

The Benefits of insects as a nutrient

The global population is growing at an alarming rate, leading to a shortage of land and food resources. As a result, there is a need to find alternative sources of food. Edible insects have gained significant attention due to their economic and environmental benefits, as well as their potential in various industries. The consumption of edible insects is not limited to India but is prevalent worldwide. These insects are highly nutritious, containing high levels of fat, protein, and micronutrients that vary among different species. Therefore, they offer a valuable solution to address the food needs of future generations. The demand for alternative protein-rich foods is rapidly increasing globally, and insects present an innovative and sustainable option as a feed source. In addition to protein, insects also provide essential nutrients such as fats, minerals, and vitamins. This paper aims to explore the different types of edible insects and their nutritional value.

The Effect of Cultural Factors on the Consumption of Consumable Insects: Evidence from Rural Southwestern Uganda

Consumable insects are an important part of human food systems and their consumption across diverse cultures dates back into the pre-historical period. This study assessed the effect of cultural factors on the consumption of consumable insects in the Kiruhura district of southwestern Uganda. The study employed a post-positivism research paradigm (mixed methodology) in a cross-sectional survey. The survey was conducted across 134 households in the Kiruhura district of South-western Uganda between January and June 2021 using a self-administered questionnaire and interview guide. Results show that member attitude and perceptions, cultural beliefs, and values were significant drivers of eating insects, particularly grasshoppers in the Kiruhura district. The findings of the study imply that the eating of insects in the area could be enhanced by educating and raising awareness about the importance of utilizing insects as a source of food. More program support that integrates rearing of insects within the household farming system could increase availability and sustainable use of seasonal consumable insects as nutritious food presents great implications for policies targeting dietary interventions.

Intestinal Taste Receptor Expression and Its Implications for Health: An Integrative Analysis in Female Rats after Chronic Insect Supplementation.

Taste receptors are found in the gastrointestinal tract, where they are susceptible to dietary modulation, a key point that is crucial for diet-related responses. Insects are sustainable and good-quality protein sources. This study analyzed the impact of insect consumption on the modulation of taste receptor expression across various segments of the rat intestine under healthy or inflammatory conditions. Female Wistar rats were supplemented with Tenebrio molitor (T) or Alphitobius diaperinus (B), alongside a control group (C), over 21 days under healthy or LPS-induced inflammation. The present study reveals, for the first time, that insect consumption modulates taste receptor gene expression, mainly in the ascending colon. This modulation was not found under inflammation. Integrative analysis revealed colonic Tas1r1 as a key discriminator for insect consumption (C = 1.04 ± 0.32, T = 1.78 ± 0.72, B = 1.99 ± 0.82, p-value <0.05 and 0.01, respectively). Additionally, correlation analysis showed the interplay between intestinal taste receptors and metabolic and inflammatory responses. These findings underscore how insect consumption modulates taste receptors, influencing intestinal function and broader physiological mechanisms.

Brief overview of edible insects: exploring consumption and promising sustainable uses in Latin America

This review explores the significance of consuming edible insects, as well as their use in the food industry, agro-industry for animal husbandry, agricultural fertilizers and bio-pesticides, and pharmaceuticals. It emphasizes the increasing interest and relevance of this practice. The study starts by investigating the earliest evidence of anthropoentomophagy, which is the consumption of insects by humans, in the region. The review offers an overview of the consumption and utilization of insects in specific regions of the world, emphasizing their significance in various cultures and geographic areas. It also identifies the types of edible insects commonly consumed in Latin American countries, such as Mexico, and explains their preparation and consumption. Furthermore, the review assesses the nutritional value of edible insects, emphasizing their potential as a valuable source of protein, vitamins, and minerals. It also explores the various promising applications of insects, including their role in the food industry, animal husbandry, production of agricultural fertilizers and bioprotectants, and even their potential in the pharmaceutical sector. Finally, the article highlights the significance of entomophagy in Latin America by exploring its historical origins, nutritional benefits, and potential applications in various industries.

Entomophagy in Mexico: current trends and outlook

Abstract One-fifth of the edible insect species identified worldwide have been documented in Mexico. In states with an entomophagy tradition, insects have been incorporated into the local cuisine. Results show that the country has a wide diversity of climates and vegetation; thus, each state has its own set of edible insects. This narrative review aims to determine the current state of entomophagy in Mexico, divided into two segments: wild-collected insects, and farmed insect products, and to identify the current trends, both in research and in commercial products available. Wild-gathered insects are mostly purchased at local marketplaces, with prices varying widely, depending on the insect and the sales point. Increased demand for wild edible insects, and the loss of natural habitat, have put some insect species at risk of extinction. Since whole edible insects are wild-gathered and commercialised whole in traditional markets, there are currently no specific mandatory standards for food products containing insects as ingredients. Alongside traditional wild insect activities, there is a fledgling industry of farmed edible insect products which can be purchased online. In conclusion, while the wild-gathered edible insect market is well established, a farmed insect products market is developing, with manufacturers incorporating insect flour into food products where the insect element is inconspicuous, seeking to appeal to a wider range of consumers, yet most recent academic research focuses on wild edible insect species, with a near absence of research articles on the farmed insect species. The insect food product industry would benefit from a closer collaboration with the academic research sector. Furthermore, the lack of a specific regulation for manufacturing insect food products constitutes a disadvantage for firms seeking to export to countries with stricter regulations. Also, with the food safety concerns inherent in wild-gathered insect consumption, studies focusing on the sanitary aspects of entomophagy are insufficient.

Exploring Locust Consumption Acceptance Factors among Pakistani University Students: Insights for Sustainable Food Adoption

In the past years, the food security issue has become clearer, and resources have been sought to improve the sustainable food chain with the aim of reducing the harm to the environment caused by traditional food systems. Through the arrival of edible insects, sustainability and nutritional prowess emerge as a solution in view. On the downside/on the other/however, public acceptance is one of the key factors that limit their (AV) placement. The scientists have frantically worked on the identification of the factors that make up one's decision to improve on the level of eating insects. This paper details the research conducted with a group of 125 students who come from numerous public institutions in Pakistan, with the focus to determine their readiness to incorporate consuming bugs which is a fresh protein source in their cultural sphere. The investigation was multifaceted one and covered the spectrum from disgust effects, safety risks, to cultural factors, knowledge gap, environmental issues, and religious considerations. Implementing a five-point Likert scale questionnaire administered through the use of Google Forms, the study brought to the fore critical aspects that stimulate the decisions and intentions of students regarding whether to eat insects to control the escalating locust population. The research pinpoints several factors as being the most important in shaping participants´ attitude towards the idea of either trying or avoiding the locust-based food – those would be something like disgust, deeply held religious views, and merely care toward the surrounding environment. On top of this, cultural influences and knowledge gaps became the essential determinants that worked to promote those decisions. This analysis applied a multipronged approach to investigate the multifarious parts that affect food choices, especially with regard to dietary innovation such as locusts. This research, not only shows a broader approach to the analysis of insect consumption in Pakistan but also contributes to effective educational programs leading to a rise in awareness level on this issue. These strategies are quite essential in the context of the issue and can contribute to the development of cheap, high-quality food and the resolution of the global food security quandary.

Declining freshwater habitats in Greenland may shift diets of the ubiquitous wolf spider Pardosa glacialis

Freshwater habitats in Arctic landscapes provide essential food resources to predaceous terrestrial fauna. However, climate change threatens the continuation of aquatic resources as increased temperatures prompt widespread drying. We investigated how declines in surface waters in the Arctic may have implications for the diets of the wolf spider Pardosa glacialis (Araneae: Lycosidae), an abundant top predator in western Greenland known to consume both aquatic and terrestrial prey. We estimated the abundance of ground-dwelling prey taxa near and far from shallow ponds to compare resource availability for P. glacialis. We also measured the stable isotopes ratios of carbon and nitrogen of potential prey taxa and used linear mixing models to estimate the relative proportions of aquatic and terrestrial prey in the diets of P. glacialis collected near ponds versus drier, upland locations. Overall, near ponds there was a 3.7 times greater abundance of ground-dwelling organisms compared to locations far from ponds. Near ponds, depleted δ13C values of P. glacialis compared to the upland locations were explained by the consumption of aquatic insects, which were relatively depleted in 13C compared to terrestrial ground-dwelling and canopy taxa. Our linear mixing model indicated that the mean relative contribution of aquatic taxa to the diets of P. glacialis at pond locations was ~ 23% versus ~ 0% at upland locations, though these results were accompanied by significant uncertainty. Our results emphasize the importance of Arctic ponds in providing habitat to potential prey of terrestrial predators. We highlight how climate change, and the continued disappearance of aquatic habitats, could disrupt critical linkages between aquatic insects and terrestrial predators.

Consumers of insect-based foods: a cross-cultural study between Belgium and Gabon.

Human consumption of insects has previously been examined in cross-cultural studies. However, such studies rarely include African countries and willingness-to-pay for insect-based food has never been assessed in cross-cultural studies. The current study presents a cross-cultural study conducted with 409 urban dwellers from Belgium (191 males; 218 females) and 412 urban dwellers from Gabon (219 males; 193 females). Each respondent was surveyed with a questionnaire following the Knowledge, Attitude, and Practices model and included questions relative to willingness-to-pay for 2 insect-based foods (insect baguette and insect burger). More than 90% of respondents from both countries were familiar with edible insects. However, acceptance of entomophagy was lower in respondents from Gabon than in respondents from Belgium. Intercultural differences were also recorded between Gabonese ethnic groups. Most respondents who accepted entomophagy were willing to eat the insect baguette and/or the insect burger. These findings confirm that entomophagy could further develop in Belgium and Gabon. Willingness-to-pay varied between countries and between insect-based foods. In Belgium, the average prices of comparable conventional foods (i.e., same foods but without insects) were lower than the average willingness-to-pay for insect-based foods. In Gabon, respondents were not willing to pay extra for insect-based foods. Setting the right price for insect-based foods is a necessary step to promote more frequent insect consumption.

Investigation Of Consumers' Attitudes Towards Seaweeds and Insects

The purpose of this research is to determine consumers' preferences for the consumption of seaweeds and edible insects and the factors affecting this very phenomenon. Accordingly, face-to-face surveys were conducted with 132 participants in Antalya. The probit model was used to determine the factors affecting seaweed consumption preference. The reasons why consumers do not prefer edible insects, were determined the deploying the fuzzy paired comparison method. The findings show that the society was not inclined to consume insects as food. The reasons for not consuming insects, in order of importance, are disgust, health concerns, appearance, beliefs, taste perception, texture perception, ethical and moral values, perception of hardness and perception of fear. On the other hand, interest in consuming seaweed as food is much higher. In general, It has been found that women and young consumers who are prone to trying new foods are more likely to purchase seaweed. The results show that the recommendations of institutions such as the United Nations on this issue should be reviewed before implementation.

Ethnoentomology: socio-cultural aspects of the acceptability of insects as food by the urban population of Brazzaville city in Republic of the Congo

The present article addresses an aspect of entomophagy for the current urban population of Brazzaville city, capital of the Republic of the Congo. It recalls, firstly, the interest in entomophagy, which was emphasised by the FAO in 2013. Concerning the Brazzaville city, cultural and religious practices of the current inhabitants attract attention and have in particular been analysed, as well as their sociodemographic and dietary characteristics. Caterpillars, orthopterans, termites and beetle larvae were discussed in particular. In this study, the questionnaire was used as a data collection tool. The results showed that the acceptability or not of insects as food by the non-native populations of Brazzaville depends on their country of origin, their ethnicity and their length of residence (p&lt;0.001). Insect consumption is highly positively correlated with the presence of preferred insects from the country of origin on the market (r=0.837; p&lt;0.001). There is a very significant negative correlation between the number of years of residence in Brazzaville and the consumption of insects by non-native populations (r=-0.306; p&lt;0.001). People who consumed insects in their country of origin either maintained the habit of insects’ consumption (59.50%), or lost this habit (13.90%). The others (3.00%) who do not consume insects in their region have integrated entomophagy into their eating habits following cultural contact with entomophagous populations. Therefore, cultural contact has a negative or positive influence on entomophagy.

Forbs, graminoids, and lepidopterans: breadth and seasonal variation in the diet of the New Mexico jumping mouse (Zapus luteus)

Abstract The New Mexico Jumping Mouse (Zapus luteus) is a federally endangered granivore active for only 3 to 5 months annually. Knowledge of diet can help guide habitat recovery and yet despite calls for restoration of its riparian habitat, the diet of Z. luteus remains largely unknown. To date, only 8 plant species have been described in the diet—whereas insectivory, mycophagy, and dietary shifts have only been hypothesized. In the late summer, Z. luteus rapidly accumulates fat for a 9-month hibernation and restoration may fail if seasonal variation in the diet is overlooked. We used DNA metabarcoding on fecal DNA (n = 165) to resolve dietary taxa within multiple trophic levels of the diet and investigate monthly patterns of consumption. Seldom studied in metabarcoding frameworks, we also investigated exogenous contamination in Sherman live-capture traps. Potential contamination among feces, pelage, and trap surfaces was detectable but low (median = 0% to 2%), with fecal communities distinct from exogenous sources. The diet of Z. luteus was varied and most frequently (frequency of occurrence) of graminoids, forbs, lepidopterans, dipterids, and false-truffles. For plant foods, dietary diversity increased throughout their season of activity, shifting from sedges and woody vegetation in the early season (June to July) to forbs and grasses in the late season (August to September). Insect consumption was consistently detected throughout the season, whereas mycophagy was more frequently detected in August, when hypogeous fungi are typically more abundant. The breadth of dietary taxa suggests plasticity in resource use, potentially accommodating diverse patterns of seed availability throughout their active period. Shifts in plant consumption may reflect a dietary adaptation to the phenological patterns of their plant communities, a synchrony that might benefit both pre- and post-hibernation survival. Our work substantially improves our understanding of the diet of Z. luteus (241 dietary taxa) and will be useful for guiding habitat recovery. It also offers scalable methods to further investigate the diet under disturbance contexts (e.g., grazing, wildfire, drought).

Could insects be an alternative food source? A comprehensive review.

According to the United Nations, more than 800 million people are exposed to starvation. It is predicted that the world population will face much more serious starvation for reasons such as global warming, diseases, economic problems, rapid urbanization, and destruction of agricultural areas and water resources. Thus, there are significant hesitations about the sustainability of food resources, and the search for alternative food sources has increased. One of the leading alternative food sources is insects. Although the use of edible insects has been accepted in some areas of the world, entomophagy is not preferred in some countries due to sociocultural conditions, health concerns, neophobia, and entomophobia. Many people do not accept the direct consumption of raw insects, but insects can be transformed into more preferred forms by using different cooking techniques. Some ground edible insects are satisfactory in terms of nutritional value and have a reasonable level of acceptability when added to products such as bread, tortilla, and pasta in varying percentages. The world market value of edible insects was estimated to be US$3.2 million in 2021 and US$17.6 billion in 2032. In this review, the current and future situation of insects as an alternative food source is comprehensively discussed.

Eco-innovation and the Edible Insect Value Chain: A Systematic Review

The growing interest in edible insects as a component in animal feed and human food has caught the atten- tion of researchers from various fields, resulting in a multidisciplinary approach. This emerging value chain positions itself as a sustainable and innovative alternative when compared to traditional protein chains. In this scenario, the objective of this article is to conduct a systematic review to investigate and present research on the consumption of insects by humans and their use as animal feed in an eco-innovation context. Our investigations indicate that research on the value chain of edible insects is present on almost all continents, revealing a growing interest, especially in developing countries. In these regions, insect consumption not only addresses issues of food security but also contributes to income generation. The increase in research on alternative protein sources, such as edible insects, seems to align with a broader trend toward sustainability in food production, underscoring the relevance of the topic in the search for environmentally friendly solutions. Noteworthy results include global recognition and collaborative efforts in edible insect research, highlighting a collective approach to addressing challenges and exploring opportunities. This global cooperation under- scores the significance of the topic and the necessity for innovative solutions in addressing environmental and food security challenges.

Knowledge of traditional insect consumption impacts sensory perception and emotional responses to cookies containing crickets

Entomophagy has been proposed as a sustainable solution to increasing food demands worldwide. However, insect consumption is associated with negative attitudes, and this is a major barrier to consumption for many Western consumers. A consumer acceptability trial was conducted providing information about the nutritional benefits, sustainability benefits and traditional/current consumption of insects. The trial evaluated how this information affected Western consumers’ (residing in Atlantic Canada, n = 148) sensory perception and emotional response to cookies containing cricket powder. All participants evaluated an initial sample (cookie made with cricket powder) and were then randomly assigned to receive information about nutritional benefits (Nutritional), sustainable benefits (Sustainable) or traditional/current consumption of insects (Traditional) before evaluating a second cookie containing crickets. The information did not affect their hedonic response to the cookies, but it did change their sensory perception. Participants who were shown the Sustainable information more frequently selected nutty, dry, and hard, while participants that were shown the Traditional information, more frequently selected pale, and vanilla. Furthermore, the Nutritional information led to an increased selection of the disgusted emotion, while the Traditional information led to an increased selection of interested and a decreased selection of adventurous. Additionally, the Traditional information decreased the participants' beliefs that eating insects is disgusting and unnatural and will increase the risk of infectious diseases. The results indicate that information about traditional/current insect consumption is more impactful than nutritional and sustainability information on Western consumers’ attitudes towards entomophagy.

Future opportunities for products derived from black soldier fly (BSF) treatment as animal feed and fertilizer - A systematic review

AbstractThe pursuit of novel food products with good nutritional value for both direct and indirect human consumption is crucial. Given the nutritional benefits of insects and the sustainability of this sort of farming, using them as food for farmed animals is a promising alternative. In this regard, the black soldier fly (Hermetia illucens) is most capable of efficiently converting a wide variety of organic materials, from food waste to manure, into insect biomass generating value and closing nutrient loops as they reduce pollution and costs. Their larvae have 29% fat and 42% crude protein, yet they have more saturated fats than most insects. They don't concentrate hazards such as mycotoxins or insecticides. Although rapid development is expected, insects remain underutilized in the animal feed industry mainly due to technical, financial, and regulatory barriers. The social stigmas and legal prohibitions against eating organisms that eat waste are added to extant taboos facing insect consumption. Bridging the knowledge gap is crucial to bring together stakeholders and to better understand the opportunities and challenges of this novel industry, so as to develop guidelines on producing insects on an industrial scale to facilitate the wider use of BSF products as animal feed, and fertilizer.

Breaking the Taboo: Understanding the Relationship between Perception, Beliefs, Willingness to Eat Insects, and Food Neophobia among Polish Adults.

Insects are a potential source of protein for direct human consumption or indirectly in processed foods. The research examined consumer perceptions and beliefs regarding the consumption of insects and food products containing insect proteins. The study aimed to identify beliefs about insect consumption, assess the perception of food products containing added insect proteins, and gain a deeper understanding of the role of food neophobia in accepting insects as an alternative source of protein. The data were collected in 2023 through a cross-sectional quantitative online survey of a group that was representative of consumers by age, gender, and region sample (n = 1000) who were responsible for food purchasing decisions in their households. While many respondents viewed foods enriched with insect protein as innovative and environmentally friendly, others found the idea of consuming insects repulsive and expressed concerns about potential allergic reactions. Food neophobia was a determining factor in respondents' beliefs and perceptions regarding the consumption of insects and food products containing insect proteins. Respondents were more inclined to consume products with added insect protein rather than visibly identifiable insects. The results highlight the need for targeted marketing strategies and product development approaches to align with the varied expectations of consumers in the rapidly expanding insect-based food market.

The global atlas of edible insects: analysis of diversity and commonality contributing to food systems and sustainability

The future of the food system on the planet is increasingly facing uncertainties that are attributable to population growth and a surge in demand for nutritious food. Traditional agricultural practices are poised to place strain on production, as well as natural resources and ecosystem services provided, particularly under a changing climate. Given their remarkable attributes, including a low environmental footprint, high food conversion ratio, rapid growth and nutritional values, edible insects can play a vital role in the global food system. Nonetheless, substantial knowledge gaps persist regarding their diversity, global distribution, and shared characteristics across regions, potentially impeding effective scaling and access to edible insects. Therefore, we compiled and analysed the fragmented database on edible insects and identified potential drivers that elucidate insect consumption, globally, focusing on promoting a sustainable food system. We collated data from various sources, including the literature for a list of edible insect species, the Global Biodiversity Information Facility and iNaturalist for the geographical presence of edible insects, the Copernicus Land Service library for Global Land Cover, and FAOSTAT for population, income, and nutritional security parameters. Subsequently, we performed a series of analytics at the country, regional and continental levels. Our study identifies 2205 insect species, consumed across 128 countries globally. Among continents, Asia has the highest number of edible insects (932 species), followed by North America (mainly Mexico) and Africa. The countries with the highest consumption of insects are Mexico (450 species), Thailand (272 species), India (262 species), DRC (255 species), China (235 species), Brazil (140 species), Japan (123 species), and Cameroon (100 species). Our study also revealed some common and specific practices related to edible insect access and utilisation among countries and regions. Although insect consumption is often rooted in cultural practices, it exhibits correlations with land cover, the geographical presence of potentially edible insects, the size of a country’s population, and income levels. The practice of eating insects is linked to the culture of people in Africa, Asia, and Latin America, while increased consciousness and the need for food sustainability are driving most of the European countries to evaluate eating insects. Therefore, edible insects are becoming an increasingly significant part of the future of planetary food systems. Therefore, more proactive efforts are required to promote them for their effective contribution to achieving sustainable food production.

Alphitobius diaperinus larvae (lesser mealworm) as human food – An approval of the European Commission – A critical review

Abstract Due to the increasing threat of climate change and the need for sustainable food sources, human consumption of edible insects or entomophagy has gained considerable attention globally. The larvae of Alphitobius diaperinus Panzer (Coleoptera: Tenebrionidae), also known as the lesser mealworm, have been identified as a promising candidate for mass-rearing as a food source based the on evaluation on several aspects such as the production process, the microbiological and chemical composition, and the potential allergenicity to humans. As a consequence, the European Commission has recently approved the utilization of lesser mealworms as human foods. Lesser mealworms are considered a good source of protein, with a protein content ranging from 50-65% of their dry weight and containing various essential amino acids. Lesser mealworms are also rich in other essential nutrients such as iron, calcium, and vitamins B12 and B6. Furthermore, the hydrolysates of lesser mealworms are known to contain antioxidants, suggesting the therapeutic properties of the insects. To enable and ensure a continuous supply of lesser mealworms, various rearing procedures of the insects and information on optimal environmental rearing conditions have been reported. However, like other edible insects, lesser mealworms are still not commonly consumed in Western countries because of various consumer- and product-related factors. Ultimately, the European Commission’s approval of lesser mealworms as a novel food is a key milestone in the development of the insect food industry. Embracing the consumption of edible insects can help address the challenges of feeding a growing population, mitigate the environmental impact of food production, and promote a more sustainable and resilient food system for the future.

EDIBLE INSECTS IN GUARANTEEING OF FOOD SECURITY

The purpose of this article is to assess the current state of knowledge on edible insects and their use in ensuring food security for society. In addition, the current legal status of edible insects is discussed, the economic and environmental benefits of their use are indicated. In addition, consumer opinions on the consumption of edible insects are presented. To achieve the goal, an analysis of the literature on the subject related to such issues as the legal regulation of “new foods”, environmental, economic and nutritional aspects of the consumption of edible insects, products with edible insects available on the market was used. Surveys on the benefits and risks of consuming unusual products and the willingness to undertake the consumption of edible insects were used. Edible insects can become a good alternative for satisfying food security in EU countries. Based on a literature study, it can be concluded that edible insects, are increasingly regulated and allowed for consumption. Currently, products based on edible insects from four species can be consumed in Europe. Edible insects fit into the theme of sustainability, as they can ensure food security in light of a growing population and limited natural resources.

Proximate Analysis of Oecophylla smaragdina, an Edible Weaver Ant Consumed by Certain Tribes of Assam, India

In the field of entomophagy, the consumption of insects as a sustainable and nutrient-rich food source has gained increasing attention due to its environmental and nutritional benefits. There has been a growing curiosity and interest in the culinary world regarding insects as a source of food. Far from being a passing trend, the exploration of insect-based cuisine has opened up new dimensions in gastronomy. Among the edible insect species, Oecophylla smaragdina, known as the weaver ant, has emerged as a subject of fascination for its unique cultural significance, ecological relevance, and potential as a nutritional powerhouse. It is consumed by certain tribes of Assam during the primary spring festival in Assam. The study was done to determine the proximate analysis of Oecophylla smaragdina using standard methods. From the study, crude protein content was found to be highest amongst the proximate composition. Thus, this study provides valuable insights about the proximate composition of this insect. Moreover, it also adds another layer of importance as it is consumed during the primary spring festival in Assam, adding cultural significance to it.