Sustainable Food Research Articles

Estimating the effect of biological nitrification inhibition-enabled sorghum on nitrogen fertilizer consumption, life cycle GHG emissions, farmer's benefit and fertilizer subsidy from Indian sorghum production

Biological nitrification inhibition (BNI) effectively curtails nitrogen (N) loss and enhances N utilization efficiency. BNI is increasingly important as a technology for mitigating greenhouse gas emissions and water pollution in countries with high N fertilizer consumption. This study aimed to evaluate the potential impacts of BNI-enabled sorghum varieties with a 30 % soil nitrification inhibition rate for a major sorghum-growing state (Maharashtra, India). We analysed the farm survey data collected for Rabi sorghum in 2020–2021 (n = 250) and for Kharif sorghum in 2022 (n = 209). Life cycle greenhouse gas (LC-GHG) emissions were estimated using a life cycle assessment with a cradle-to-farm gate perspective. The results showed that adoption of BNI-enabled sorghum reduced N fertilizer application in the Rabi and Kharif seasons by 8.0 % and 7.4 % and area-scaled/yield-scaled LC-GHG emissions by 15.6 % and 11.2 %, respectively, while increasing farmers' benefits slightly. These changes could reduce the government's expenditure on urea fertilizer subsidies by 9.1 %. However, many farmers indicated that they would not change N fertilizer application even if the yield per N fertilizer application increased. Even under these circumstances, area-scaled/yield-scaled LC-GHG emissions will be decreased by 11.3 % and 13.5 % in the Rabi season and 8.1 % and 10.2 % in the Kharif season, respectively. The yield and farmers' benefit will increase by 2.5 % and 4.9 % in the Rabi season and by 2.4 % and 6.5 % in the Kharif season, respectively, but the government's expenditure on fertilizer will not decrease. These results indicate that BNI-enabled sorghum can be introduced into countries where fertilizer use is low. This study shows the potential impacts of BNI-enabled sorghum under two scenarios; N fertilizer consumption is reduced or maintained. Discussions on the N fertilizer consumption under BNI-enabled sorghum are needed to establish a sustainable food system, especially in countries with high N fertilizer consumption.

THE INFLUENCE OF LOCAL WISDOM ON SOIL FERTILITY IN SOUTH NIAS

This study aims to explore the influence of local wisdom on soil fertility in South Nias. Local wisdom, which includes traditional agricultural practices such as the use of organic fertilizers, crop rotation, and sustainable forest management, has proven effective in enhancing soil quality and productivity. Through a literature review approach, data were collected from various sources to analyze the relationship between local practices and soil fertility. The results indicate that local wisdom not only improves soil fertility but also contributes to environmental preservation and ecosystem sustainability. These findings underscore the importance of integrating local wisdom into modern agricultural practices to achieve sustainable food security and community well-being in South Nias.

Food Security Challenges for Hospital Sustainability

Background: Food security and safety are becoming major concerns worldwide. Providing food security and safety in hospitals is particularly challenging since their populations are diverse in dietary and nutritional requirements and more vulnerable to foodborne illnesses. The aim of this research is to promote hospital sustainability by addressing food security and food safety. Method: This study uses a quantitative method with a bibliometric study approach. This research has 212 articles from the Scopus database. All the documents were collected simultaneously in August 2022. The selected article encompassed the years from 2017 to 2021, including document type, publication stage, source type, language, and subject area. The data was analyzed using VOSviewer and NVivo analytical tools. Results: The results of the studies on food security and safety increased from 2017-2022 with current trends in hospital sustainability, food waste, and waste management in food. Our study has identified four clusters: hospital food services, hospital sustainability, nutrition, and food safety. Food security is positively correlated with assessment, challenges, measurement, status, and sustainability (Pearson correlation score is 1). Disease control, proper waste management, and environmental health are all associated with food safety (Pearson correlation score ±0.79-0.64). Conclusion: Food safety and security are critical to achieve hospital sustainability, therefore awareness-raising efforts must continue. It is recommended that hospital stakeholders, food service providers; public and private sectors adopt policies and guidelines to disseminate information on food safety and security concerning hospital sustainability.

Duckweed: Growth factor and applications in nonfood, food, and health

AbstractDuckweeds are aquatic plants and mainly constitute of five genera, Lemna, Spirodela, Wolffia, Wolffiella, and Landoltia. These are the smallest plants yet having a rapid growth rate. Hence, duckweeds are sustainable food sources for humans and animals, as well as sustainable feedstocks for biochemical production. Previously, duckweeds were discovered for their vital role in water purification by metabolizing chemicals and waste. However, many recent studies have discovered that duckweeds have a high amount of nutrients, which makes them a great substitute in human diets and animal feed. Their nutrient composition and growth rate are greatly affected by environmental factors. Hence, this review summarizes the characteristics of duckweeds, growth rate factors, and their applications in nonfood, food, and health. Duckweeds could improve health due to their large amounts of macro‐ and micronutrients. Future studies on the safety measures and duckweed culture are strongly recommended to safeguard the quality of the plants. Besides that, duckweeds have great potential to be used as heavy metals or contaminants absorbent, as well as a sustainable feedstock for biofuel production.

Food sustainability in times of crises a deductive study from the Holy Qur’ān, chapter 12 (Yūsuf/Joseph)

This article explores the concept of food sustainability in times of crisis, drawing insights from the Qur’ānic narrative of Joseph. It delves into Joseph’s comprehensive plan, outlining its key principles, implementation strategies, and the positive outcomes it achieved for Egypt and neighbouring regions. The research seeks to present Joseph’s plan as a model for addressing food crises, his plan for food sustainability during the seven years crisis that Egypt went through as a result of the famine. It examines the foundational principles that guided his strategy, the steps taken to implement it, and the ultimate results. The research concludes with several key findings: Food sustainability in times of crises requires a carefully designed policy centred on strategic stockpiling. On the other hand, successful implementation hinges on a deep understanding of the plan’s components and a steadfast commitment to its execution.

The Role of Wild Food in Fostering Healthy, Sustainable, and Equitable Food Systems

In this paper, we provide an overview of the research and literature on wild foods (i.e., edible plants that grow without human cultivation and/or animals harvested from their natural habit, i.e., food sourced from “hunting and gathering”) and their ability to assist food systems in becoming more sustainable and equitable. We begin with a discussion on the green revolution and the global capitalist food system that has been created and is dominated by large agribusinesses. Next, we turn to a brief discussion of how homogenizing the food system, as large agribusinesses have, leads to a corresponding loss of local culture. We then provide an overview of the main areas of wild food research, including nutrition, reducing food insecurity, the importance of cultural and shared knowledge, and sustainability. Our discussion stresses how focusing too heavily on the dichotomy of cultivated vs. wild food is problematic. Rather, lessons regarding health, sustainability, and equity can be learned from foragers, hunters and gathers.

Indulging in Tempting Yet Unhealthy Delights: Exploring the Moderating Influence of Gender and Motivation for Healthy and Sustainable Eating

Individuals frequently encounter alluring food temptations that can disrupt their efforts to follow a healthy diet. These temptations may trigger pleasurable thoughts and sensations, potentially leading to unhealthy eating habits and obesity, which misalign with the goals of sustainable food systems to promote overall well-being. However, there is limited knowledge regarding how individual differences such as gender and motivation for healthy eating might impact individuals’ responses to unhealthy food temptations. In an experimental investigation, 245 participants were exposed to a tasty but low-nutrient food product (potato crisps). The results provide several new insights: (a) when individuals’ motivation for healthy eating is low, pleasurable experiences have a positive impact on perceived dietary quality; (b) pleasurable feelings also directly reduce willingness to consume potato crisps; (c) gender influences the relationship between pleasure-feeling and willingness to eat, with a negative relationship for women and a non-significant relationship for men; and (d) among women, there is a positive relationship between arousal and willingness to eat, while this relationship is non-significant for men. This study adds to the body of knowledge already available on food temptations, nutrition, and sustainable eating.

Small millets: A multifunctional crop for achieving sustainable food security under climate change

Small millets: A multifunctional crop for achieving sustainable food security under climate change

Using salience and availability to promote sustainable and healthy food choices in hospital cafeterias

Sustainable diets can achieve considerable reductions in greenhouse gas emissions and improvements in human health, but changing dietary behavior remains a challenge. We assessed the impacts of two behavioral insights strategies on bridging the intention-action gap related to sustainable and healthy food choices amongst hospital cafeteria patrons. In a pilot survey of hospital staff (N = 1,165), 56% identified limited awareness and availability of sustainable food as barriers to purchasing, although 46% were extremely willing to try sustainable dishes. We examined increasing salience (Study 1), varying availability (Study 2a), and decreasing availability (Study 2b) on sustainable and healthy dish purchases in three hospital cafeterias. Each study ran for seven weeks from March to April, 2023. In total, 10,616 dishes were purchased. In Study 1, increasing salience was associated with significant uptake of sustainable and healthy dishes, but the effect disappeared once the salience intervention was removed. In Study 2a, increasing availability of sustainable dishes corresponded to a significant increase in purchases of sustainable dishes, while decreasing availability in Study 2b followed a downward trend in purchases, suggesting that availability drove dietary choices. We recommend hospitals consider these choice architecture interventions to support the adoption of sustainable and healthy diets.

COVID-19 pandemic and food security: Strategic agricultural budget allocation in Indonesia

The COVID-19 pandemic has exposed significant vulnerabilities in Indonesia's food security, highlighting the need for more strategic agricultural budget allocation. This study addresses the issue of inadequate budgeting techniques that fail to effectively support food production and distribution during crises. The primary objective is to develop a tailored framework that optimises budget allocations to strengthen Indonesia's food security in the face of socio-economic and geographical challenges. Using a multi-dimensional research approach, the study involves key stakeholders from the Ministry of Agriculture, the Ministry of Finance, and the Ministry of National Development Planning, employing methods such as in-depth interviews, focus group discussions, and data collection from primary and secondary sources. The research utilises the Analytical Hierarchy Process (AHP) with the Expert Choice 2000 program to systematically evaluate decision-making options. Findings reveal the necessity of a resilient framework that balances short-term emergency responses with long-term strategies, focusing on increasing production capacity, improving seed quality, expanding land availability, and adopting advanced agricultural technologies. The study contributes to the policy landscape by offering a structured agricultural budgeting framework and policy recommendations aimed at mitigating disruptions, enhancing productivity, and supporting sustainable agricultural practices. It also emphasizes the importance of sensitivity analysis in budget planning to inform strategic decisions. The study recommended targeted investments in production capacity, a reevaluation of rice import regulations, and the adoption of innovative technologies to ensure a resilient and sustainable food system in Indonesia.

Soft, crispy, crunchy, sustainable: The role of visual textures in shaping sustainable food preferences

This research evaluates the potential of using visual textural complexity as a subtle yet effective strategy to direct consumer preferences towards more sustainable food choices, addressing the urgent need to reduce greenhouse gas emissions in the food industry.Using a traditional Turkish rice pudding, sütlaç, as a case study, we prepared four variants with varying textural complexities (ranging from simple to complex) by reducing the portion size by half and gradually adding soft, crispy, crunchy, and airy textured food layers onto it. Two parallel sets of variants were formulated to minimize potential bias from differences in composition and visual properties of the layers. One hundred participants individually evaluated paired visual stimuli of these variants under two experimental conditions: non-informative, which included only visuals, and informative, which included visuals with accompanied by sample information.Paired binary analysis revealed consistent preference for variants with higher levels of visual textural complexity, especially those with three layers (soft, crispy and crunchy), regardless of experimental conditions and product formulations. Although sample information affected preference scores, variants with certain levels of textural complexity were still preferred over the traditional sample (p < 0.05). Preferences for sample variants over the control reduced the carbon emission over 31 %. The study links the impact of visual textural complexity on preferences to the Elaboration Likelihood Model (ELM) and demonstrates that this strategy can effectively direct consumer preferences towards more sustainable options. Adopting the insights from this study can assist food producers and marketers in contributing to the broader goal of reducing carbon emissions.

Can carbon labels shift consumers towards sustainable food? Evidence from Chinese consumers

Carbon labels are becoming an essential tool for policymakers in many countries to promote low-carbon consumption. To assess customers’ willingness to pay for five carbon-labeled agricultural products (CAP), we used payment card to conduct a questionnaire survey among 641 respondents in Shanghai, Nanjing, Wuhan, and Xi'an, all located in China. This study quantitatively analyzes the influencing factors and interactive mechanisms of the public's willingness to purchase CAP through the extended Theory of Planned Behavior and Norm Activation Model. The results show that consumers' willingness to pay a premium for carbon-labeled milk, corn, bananas, tomatoes, and eggs is 27.50%, 29.73%, 26.86%, 26.51%, and 24.26% respectively. Perceived behavioral control has the strongest positive influence on purchase intention, followed by subjective norms, attitudes toward the behavior, and personal norms. There is a significant mediating effect between awareness of consequences and personal norms, which indirectly influences personal norms through the ascription of responsibility and subsequently affects purchase intention. Additionally, there is a gap between purchase intention and behavior, and risk perception negatively moderates the relationship between the two. Based on the research findings of this paper, practical and effective policy suggestions are proposed for the government to promote carbon labeling policies and reduce carbon emissions.

A model for sustainable development: Advancing digital food retailing

The technological revolution has driven food retail towards self-service technologies (SSTs). The supermarket concept thrived due to consumer convenience and direct food access. This qualitative study explored the modernization of food retail through new technologies, focusing on Canadian stakeholders’ perceptions. Using a grounded theory approach, it aimed to create a sustainable digital food system model addressing social and moral food access aspects. Findings revealed that digitalization in food retail is driven by economic motives and stakeholders’ desire for collaboration and partnership to support food access.

Towards sustainable agricultural development and food security in East Asia: The role of broad money and banking credits

The existing literature has extensively explored the role of financial development in boosting agricultural output. However, there is a lack of empirical research on the effects of broad money and banking credits on food production in East Asian countries. This study addresses this gap by examining the relationship between financial variables and agriculture in selected East Asian economies from 1995 to 2019, focusing on food security. Our findings indicate that increases in broad money and financial sector credit significantly enhance long-term food security by 0.216% and 0.846%, respectively. Additionally, we observed positive correlations between food security and agricultural inputs: a 1% increase in agricultural land, fertilizer use, and renewable energy adoption improves food security by 0.219%, 0.049%, and 0.146%, respectively. Robustness checks and Granger causality tests further validate these results. This study underscores the critical role of financial resources and agricultural inputs in food security and calls for a reassessment of credit systems to mitigate any adverse effects. These findings provide important insights for policymakers aiming to strengthen food security in East Asia.

COVID-19 and shifting food preferences: A panel study among Chilean students

The COVID-19 pandemic had a profound impact on various aspects of life. This study aims to investigate whether the COVID-19 pandemic changed food preferences, focusing on cost perceptions, environmental factors, and health attributes. We conducted a panel study with self-administered online surveys among undergraduate students in Chile, both before and during the first wave of the pandemic. Each survey included a discrete choice experiment (DCE) to elicit food preferences. Using mixed logit models, our analysis shows that during the COVID-19 pandemic, sensitivity to cost, preference for foods with low environmental impact, and preference for vitamin-rich foods increased. These changes in preferences can be attributed to individuals' perceived health risks. These findings suggest that the pandemic increased awareness of sustainable and healthy food choices, with important implications for promoting these choices during global crises.

Leaving the niche: Recommendations for mainstreaming Low Trophic Aquaculture in countries around the Atlantic basin

Low Trophic Aquaculture (LTA) is the farming of aquatic organisms such as primary producers (e.g., seaweeds) and primary consumers (e.g. bivalves). Despite recognition as a key pathway to the provision of sustainable food from the oceans, many forms of LTA around the Atlantic basin remain in the niche stage of socio-technical evolution. With governance regarded as a limiting factor to LTA development, aquaculture experts and stakeholders were surveyed to find, and interviewed to document, examples of implemented good practice in rules, regulations and processes that were seen as supportive of the sustainable development of LTA and related Integrated Multi-Trophic Aquaculture. A theoretical framework on socio-technical change under polycentric governance informed an analysis of the good practices, according to five core themes: regulation and legislation; resources and infrastructure; human and social capital; financial instruments and economic support; and, the overarching socio-economic environment. Recommendations for action were constructed both inductively (from interview evidence) and deductively (from the theory), and were organised in relation to the three spheres of governance: Government should: provide stable policy and legal frameworks within which developers can operate with commercial confidence; ensure public trust in LTA products; support LTA start-ups; ensure availability of researchers and public officials with LTA relevant skills and knowledge. Market organisations should: allow LTA to better access financial capital and insurance; develop consultancy services; inform the public about LTA. Civil Society organisations, including universities, producer organisations and NGOs, should: in some cases, lead development of LTA with arrangements for local control; help certify appropriate LTA as sustainable, healthy and socially equitable.

Performance investigation of newly developed novel hemispherical solar dryer for sustainable food preservation: Comparative analysis with traditional methods

To preserve the world’s food resources, drying agricultural products is crucial for prolonging their shelf life. A novel concept of 1.5 m hemispherical solar dryer surmounts the limitations of conventional dryers like long drying time, solar tracking, large space requirement etc. Trials were performed on Thomson grapes to convert into raisins. For the purpose of fair accuracy in comparison, experiments were conducted on hemispherical solar dryer (active and passive mode), traditional cabinet solar dryer as well as open sun drying (OSD) by maintaining the uniform test conditions. An average moisture removal rate of 0.1935096 kg/h was obtained in hemispherical dryer. The hemispherical solar dryer significantly reduced drying time for converging grapes into raisins to 13 days, compared to 18 days in a cabinet solar dryer and 19 days with OSD. The hemispherical dryer, through a gap, creates a greenhouse effect, reaching a 70.1 °C maximum temperature and an average of 60.7 °C at 796 W/m2 average solar energy. The hemispherical dryer attained a drying efficiency of 5.67 %. Six mathematical models were employed for hemispherical and cabinet dryers. Amongst these Two term and Wang & Singh models were found suitable for the experimental data and provided precise prediction of moisture ratio.

Effectiveness of the Eco-Score Food Label: An Information Experiment Combined with Nutri-Score Label in Belgium

Consumers’ food choices significantly impact the environment, with food production contributing substantially to global greenhouse gas emissions and water use. In response, policy interventions such as front-of-pack eco-labels aim to guide consumers towards more environmentally friendly food choices. The recently introduced Eco-score aims to guide consumers toward environmentally friendlier food choices. However, evidence regarding its effectiveness, particularly when used alongside the Nutri-score, remains limited.A cross-sectional online survey was conducted with 607 Belgian respondents. Respondents assessed their perceived environmental impact of food products with various Eco-score and Nutri-score combinations. They were randomly assigned to one of two conditions, where one group saw both labels, while the other saw none when assessing the food products. Generalized linear models were used to determine if the Eco-score improved accuracy in assessing the environmental impact of food products, and a structural equation model analysed factors influencing the intention to use the Eco-score.Results show that the Eco-score enhances accuracy in environmental impact assessment, particularly when respondents are knowledgeable about the Eco-score and indicate environmental concerns. However, effects were less pronounced for products with conflicting Eco- and Nutri-scores, potentially due to cognitive dissonance. Furthermore, factors such as knowledge about and positive perceptions towards the Eco-score significantly influenced the intention to use it.The Eco-scores’ potential as a tool to guide consumers towards more environmentally friendlier food choices is validated by their positive perception and enhanced evaluative capacity among a representative sample of the Belgian population. Further research and a broader implementation are necessary to assess the long-term impact and utility of the Eco-score in promoting sustainable food consumption.

The effect of obligatory versus voluntary school food standard implementation on the fulfillment of the school food standard requirements in Germany

BackgroundIn high income countries there is increased focus on health- and sustainability aspects concerning school feeding. To ensure this in Germany, a school food standard (SFS) was established. Implementation of the SFS is mandatory only in some federal states and has remained voluntary in others. The aim of this first exploratory study is to analyze school lunch menus regarding their fulfillment of the SFS requirements and detect differences between obligatory and voluntary implementation of the SFS. MethodsAfter drawing a random sample of schools and reaching out for voluntary participation in this study, school menus of federal states with obligatory (OSFS) and voluntary (VSFS) SFS implementation were collected and analyzed. The SFS criteria are based on the conditions observed in the menu for a four-week mixed diet menu, an ovo-lacto-vegetarian dish, additional criteria for menu planning and menu criteria. In addition, we estimated binominal logistic regression models and two-step multiple regression models to control for the effects of geographical factors and socioeconomic status to the fulfillment of the SFS criteria. ResultsWe assessed 48 menus from OSFS federal states and 102 menus from VSFS federal states. OFSF menus met the requirements to a higher extent and exhibited a better dietary pattern. School food-standardized meals included significantly less breaded and deep-fried components (96 % vs. 79 %, p = 0.009), contained more whole grain products (83 % vs. 30 %, p < 0.001) and fewer meat products (60 % vs. 25 %, p < 0.001), more fruits (81 % vs. 63 %, p = 0.023) and more vegetables, legumes and salad (85 % vs. 61 %, p = 0.002). Menus with SFS obligation emphasized nutrient optimized menus significantly more frequently (42 % vs. 28 %, p < 0.001) and used unambiguous designations of meals more often (96 % vs. 82 %, p = 0.023). They contain more regional products (33 % vs. 13 %, p = 0.003), more organic products (71 % vs. 41 %, p < 0.001) and meat from animal friendly husbandry (21 % vs. 7 %, p = 0.012). The effects of the covariates were rarely significant. ConclusionSchool menus with obligatory use of the SFS met the requirements to a greater extent and contain healthier and sustainable food components more frequently. Nevertheless, results show that even in federal states with obligational use, the standard implementation is not fulfilled completely. Further research is needed to detect barriers in the daily implementation of the SFS.

Comprehensive Bibliometric Analysis and Systematic Review of Two Decades of Food Vendors Study: Deciphering the Dynamics of Food Vendor Research

This study examines food vendor research over a two-decade period (2005-2023), using both bibliometric and systematic review approaches. Using data from the Scopus database with 421 articles, the study shows a significant increase in research production, with a focus on food security, consumer behavior, and the influence of COVID-19. The bibliometric analysis reveals major study issues, such as food safety, sustainability, and the informal sector, while a systematic examination of the top 20 most-cited publications provides additional insight into the research landscape. This review emphasizes the need of include time in food accessibility studies, the need for a more nuanced understanding of food deserts, and the increased interest in organic vegetable marketing and insect eating. Also this is the first article which completely drafted in the perspective of food vendors. The study concludes by identifying limitations and suggesting future research directions, emphasizing the importance of an interdisciplinary approach, incorporating qualitative methods, focusing on specific regions, investigating the impact of the internet, and delving deeper into purchasing habits, sustainability, and socioeconomic impacts. This thorough analysis lays the groundwork for future research, encouraging the creation of more fair, sustainable, and resilient food systems.