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The purpose of this short communication is to shed light on the accuracy of quantification methods of household food waste (HFW).

Thirty-seven recently published studies in HFW were surveyed for this commentary. Exemplary methods and findings of these studies were compared.

It is challenging to draw conclusions on the amount of the HFW per person/town/country due to the inconsistent and heterogeneous methodologies used. We recommend using direct measurements or triangulation of methods to help ensure valid findings. Governments should incentivize consumers to deliver their food waste to designated locations where weights could accurately be assessed. Monetary or tax incentives could help stimulate an accurate accounting of waste and encourage reductions. Food waste measurements should be consistently reported as kg/person/week.

Food and water security must be provided for all. It is estimated that one-third of edible food for humans is currently lost or wasted globally. According to the World Food Program (WFP), this is about 1.3 billion tons of food per year and at the same time this wasted food could be sufficient to feed two billion people.

The aim of this paper is to fill a gap in the literature about the magnitude and significance of HFW and its impact on the environment and social welfare. Currently, there are no generally accepted uniform methods of food waste quantification at the household level. This original communication brings the importance and challenges of the quantification of HFW to light.

This study aims to explore the use of a double diamond design method to engage the industry in a sector-wide response to the issues of food waste as constructed by consumers. This particular design method is achieved by an exploration of a collective intelligence-participatory design (CIPD) project to engage industry participants in understanding and responding to consumers’ perceptions of the role of packaging in reducing food waste.

Using the UK Design Council’s double diamond design method as a guiding conceptual principle, the project recruited industry participants from medium to large food businesses across various food categories. Two scoping workshops with industry were held prior to the initiation of a 12-stage project (n = 57), and then two industry workshops were held (n = 4 and 14). Eighty participants completed an online qualitative survey, and 23 industry participants took part in a Think Tank Sprint Series. The Think Tanks used participatory design approaches to understand barriers and opportunities for change within food industry sub-sectors and test the feasibility and acceptability of package designs to reduce consumer waste.

For CIPD to work for complex problems involving industry, it is vital that stakeholders across macro- and micro-subsystems are involved and that adequate time is allowed to address that complexity. Using both the right tools for engagement and the involvement of the right mix of representatives across various sectors of industry is critical to reducing blame shift. The process of divergence and convergence allowed clear insight into the long-term multi-pronged approach needed for the complex problem.

Participatory design has been useful within various behaviour change settings. This paper has demonstrated the application of the double diamond model in a social marketing setting, adding value to an industry-wide project that included government, peak bodies, manufacturing and production and retailers.

Higher education institutions (HEIs) play a pivotal role in fostering economic development by cultivating skilled workforce and generating knowledge and innovation. However, HEIs may pose a potential risk to sustainable economic development due to the generation of food waste inside their campus canteens. Therefore, this study aims to examine the influence of attitude, subjective norm (SN), perceived behavior control (PBC), religiosity and pro-social behavior among State Islamic Religious College (SIRC) students on their intention to avoid food waste behavior. This study also focused on the mediating role of the three original theory of planned behavior (TPB) variables and pro-social behavior in the relationship between religiosity and the intention to reduce food waste.

Questionnaires were used to collect data from 443 students at SIRC. The collected data were processed and analyzed using structural equation modelling to test direct, indirect and mediating effects.

The empirical results indicated that the eagerness of students at SIRC to reduce their behavior of leaving food behind can be driven by their negative attitudes or views toward food waste, the practice of religious teachings in their lives, the belief that they can avoid food waste and their concern for the environment. The empirical results reveal that even though religiosity influences SN, it is unable to strengthen the relationship between religiosity and the desire to be anti-food waste.

In addition to contributing to the food waste literature in the context of eating behavior, the results of this study have theoretical and practical implications.

To assess SIRC students’ behavioral intentions to avoid food waste behavior, this study used a contemporary setting to measure attitude, SN, PBC, religiosity and pro-social behavior, so strengthening the TPB’s empirical underpinning.

The present study aims to examine the impact of social media marketing activities (SMMAs) on the adoption of food waste reduction behavior among Generation Z consumers within the restaurant service industry in Pakistan. The study focuses on the impact of social media advertisements and investigates the mediating influence of waste reduction intentions on actual behavior. This underscores the significance of contextual and emotional variables in comprehending consumer behaviors.

The study used a cross-sectional research methodology to examine the impact of SMMAs on the behavior of Generation Z consumers in Pakistan’s food service industry with regard to reducing food waste. A study was conducted to investigate the restaurant purchasing behaviors of a sample consisting of 449 individuals belonging to the millennial generation, often known as Generation Z.

The majority of variables related to SMMA, except for interactivity and personalization, were shown to have a positive impact on individuals’ intents to reduce food waste. The study observed a significant relationship between consumers’ intentions to decrease waste and their actual behavior in waste reduction. Furthermore, this relationship was shown to be influenced by the mediating role of waste reduction intention.

Examining how social media affects Pakistani Generation Z’s efforts to reduce food waste is what makes this study distinctive. According to the research, the majority of social media factors positively influence intentions to reduce waste. The relationship between intentions and actual behavior, which highlights the impact of social media campaigns and emotional aspects in promoting waste reduction, is one of the important conclusions.

This paper aims to illustrate the application and effectiveness of a marketing programme co-designed by supply- and demand-side stakeholders to reduce consumer food waste in restaurants.

This stakeholder-based marketing pilot study adopted the co-create, build and engage framework for programme design and implementation. Major stakeholders, interacting at the point-of-sale, participated in a series of focus groups, interviews and co-design. The research process informed the marketing mix, which aimed to provide value for all parties. The four-week pilot programme was delivered in a non-buffet-style commercial restaurant chain for 10 months. The amount of consumer food leftovers was measured and compared with pre-programme baseline data to evaluate programme effectiveness.

The results show that the marketing mix co-designed by restaurant stakeholders and consumers effectively reduced food waste by almost half in the pilot period. The profitability of the pilot restaurant increased as food costs decreased.

This research demonstrates how working with stakeholders from both the supply and demand sides can identify motivations and barriers. Insights gained in the research phase can inform the delivery of a marketing mix that reduces consumer food waste. This study demonstrates the marketing research, design, implementation and evaluation process for a marketing programme that reduced consumer food waste.

To effectively reduce consumer food waste, practitioners should not only focus on changing consumers’ behaviour. Co-designing solutions with food service stakeholders to address business and operation challenges is crucial to the attainment of a positive impact at the point-of-sale.

This research shows how marketing changes behaviour in individuals and business entities, contributing to positive environmental impact through waste reduction in the commercial food service sector.

It is globally recognized that food waste has significant economic, social and environmental impacts. This study endeavors to identify the individuals' underlying factors that affect food waste behavior in a social context in Egypt.

Due to the scarcity of research illustrating food waste in a social context, a qualitative research paradigm is employed. In-depth semi-structured interviews are conducted with 18 Egyptian households to report their experiences, thoughts and feelings while eating in a social context.

Based on thematic analysis using grounded theory procedures, eight main elements affecting creation and reduction of food waste in social contexts are identified. Additionally, the authors investigate the role of emotions in social dining contexts. A key finding is that food waste in social events is inevitable and is the acceptable norm in the Egyptian culture. Thus, the first step to reduce food waste is paying more attention to change culture. Persuading people with the negative consequences of food waste issue on behalf of their cultural values will be more challenging and may require more innovative approaches.

Although food waste issue is one of the contemporary issues in the world, very little is known about how social food consumption leads to food waste behavior. This study employs social influence theory and the collectivistic culture orientation to investigate the unanswered question of why food gets wasted in social meal context.

Managing farm waste is a fundamental problem for farmers with economic, environmental and social impacts throughout the supply chain. Little research has explored innovative product solutions. This paper examines gleaning to reduce farm waste and proposes a resource-based Gleaning Innovation Framework which can lead to differentiated consumer products.

A multi-method approach, including descriptive company reviews, practitioner interviews and consumer surveys, evaluated how different participants in the food supply chain view the farm waste problem and the innovation of products through gleaning.

This research found that practitioners and consumers are cognizant and invested in reducing farm waste, with gleaning as a plausible solution. Future research includes gathering perspectives from retailers and other supply chain members, which may further develop the conceptualization of the gleaning innovation process.

Uniquely, the authors propose the Gleaning Innovation Framework that provides a platform for innovation across the supply chain to reduce farm waste. The research contributes to the farm waste debate with evidence that gleaning can assist the reduction of farm waste through product innovation. Developing innovations to reduce farm waste in sustainable and environmentally friendly ways would not only benefit the supply chain platform but also society.

Food waste is increasingly becoming a major issue for retail companies. However, there is still limited knowledge of how new forms of collaborative consumption (CC) may impact firms' behavior. This paper identifies and examines how the enablers of food waste and firms' tendency to cooperate with their customers may affect the adoption of measures oriented to diminish waste reduction, as well as the use of mobile technologies.

A empirical study has been conducted on a sample of international firms operating in the food sector as retailers (i.e. restaurants, bar and catering services) or in similar activities (i.e. hotels and accommodations). The authors tested an empirical model aimed at revealing the possible mediating role of customer cooperation in affecting the impact of food waste enablers on (1) waste recovery measures and (2) the adoption of mobile technologies for food recovery.

The results of this study showed how customer cooperation mediates the impact of food waste enablers on the intention to use mobile applications for food recovery but not on the adoption of food recovery measures that, instead, mainly depends on waste causes internal to the firm.

This is one of the first studies that tries to identify and evaluate the impact of the different enablers of food waste on firms' pro-environmental behaviors. Interestingly, the authors show how customer cooperation is a decisive factor to promote new forms of CC in the food industry. Importantly, customer cooperation acts as a bridge between the drivers of food waste and a firm's intention to adopt measures against it. By actively involving customers, firms can gain insights, develop effective strategies and foster a culture of waste reduction that benefits both the business and the environment.

The purpose of this paper is to examine the role of digital transformation processes for food and beverage companies by investigating how the sustainability-related communication focus (low vs. high) in food waste fighting mobile applications' advertising campaigns influence consumers' intention to use such mobile app, via their environmentalism.

An experimental study has been conducted by using a fictitious mobile app named “Boxy Food!” among a sample of 408 randomly recruited international participants.

Findings reveal that the sustainability-related communication focus in such food waste-fighting mobile apps advertising campaigns (low vs. high) positively affects consumers' intentions to use such mobile apps through the effect of environmentalism. More interestingly, this effect increases in magnitude, becoming higher among those consumers who exhibit a high level of status consumption orientation explaining their behavior as an attempt to “be green, to be recognized from the others.”

This study suggests marketers and managers operating in the food and beverage sector how to design effective strategies to incentivize sustainable behavior through the use of new technologies, by leveraging consumers' individual differences, and specifically on their desire to be recognized as sustainable consumers.

This is the first study demonstrating how the combined effects of the sustainability-related communication focus (low vs. high) may incentivize the use of mobile applications for food waste fighting, by leveraging on consumers' looking to be recognized as green.

Food waste (FW) is a significant problem in the hospitality sector worldwide. The Covid-19 pandemic has imposed a health protocol on the hospitality sector to protect the customers and the community. This paper aims to evince a new understanding of the tourist city during the Covid-19 pandemic by exploring the effects of the new health protocol on FW management at the consumption stage in the hospitality sector in Dubai.

In this study, the authors use a scale assessment method and a survey distributed to 202 tables in 35 restaurants offering open buffet catering in Dubai.

The paper’s findings provide evidence that: first, the tourist city has faced substantial changes during the pandemic as the new health protocol imposed by the Covid-19 circumstances has mitigated the waste of food in the open buffet services. Second, the highest waste has been observed for vegetables, followed by grains (especially rice) and bread. The lowest waste has been observed for meat and fruits. Third, FW per table varies considerably by consumer groups. The FW quantity of residents is significantly higher than that of tourists. Family gathering tables with an essential number of children waste more food than the other group types. Fourth, consumers claimed to become more conscious about the quantum of FW as a direct response to the socio-economic circumstances imposed by the lockdown such as food availability, salary reduction, economic uncertainty and employment instability. Fifth, the attitude to keeping food on the plate does not change considerably.

This paper offers many practical implications. Using newly discovered pieces of evidence from practitioners, hoteliers and policymakers, this paper highlights current hospitality practices that can reduce the waste of food in a postpandemic world. Furthermore, our paper suggests a set of actions for restaurants offering open-buffet services to reduce FW at the consumption stage.

This paper adds significance to the extant tourist city literature. The tourist city served as an example of a recent urban development characterized mainly by tourist consumption. This research advances the understanding of FW management and customers’ behavior during the Covid-19 pandemic in an important touristic city “Dubai” and suggests a set of actions.