Papers by Claudia Giordano
Sustainability
The current study investigates which motivations to reduce food waste influence respondents’ like... more The current study investigates which motivations to reduce food waste influence respondents’ likelihood to accurately self-assess food waste quantities. Some studies suggest that motivations to prevent household food waste influence respondents’ behaviors, but others highlight that routine and daily life often represent an obstacle to acting consistently. To this end, this study observed if a certain set of motivations actually influences the perceived quantity of food waste produced; in other words, if the motivation to reduce food waste is a driver of coherent behavior and awareness. The results were drawn from weekly food diaries and then compared with online questionnaires run on a sample of 388 households. A random forest has been performed to identify the relevant variables, able to predict the food waste self-assessment. The results show that no specific motivation is related to a better awareness of food waste quantities, nor to the actual waste average.
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Journla of Cleaner production , 2020
The European Union is working towards reducing food waste of 30% by 2025. A pyramid of priorities... more The European Union is working towards reducing food waste of 30% by 2025. A pyramid of priorities to manage the food waste reduction is set by the Directive 2008/98/EC, where prevention is the first action to be implemented by the Member States. The objective of this paper is to identify the main trajectories followed by scientific research and two national laws against food waste, namely the Italian and the French laws. To do so, the two regulations are compared by analyzing and classifying each single measure according to the FUSIONS approach. Results are discussed with reference to the priorities expressed in the food waste pyramid. So far, it seems that the two national laws took a different direction, limiting the prevention activities to communication campaign addressed to final consumers and focusing on re-use and recovery especially at the final stages of the supply chain. Academic research shows a dominant focus on energy recovery and recycling.
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Sustainability, 2019
Food waste at the household level accounts for a significant share of total food waste in develop... more Food waste at the household level accounts for a significant share of total food waste in developed economies, according to the Food and Agriculture Organization. Studies have shown that this share varies between 0.3 kg to 4.5 kg per person per week, depending on the definitions and methodologies applied. In Italy, quantities, behaviors, and attitudes regarding food waste have been solely explored through the use of questionnaires, typically leading to discrepant values of food waste. In this study, we estimate and analyse the determinants of food waste over a 388 units’ panel spread over the national territory, through a diary and questionnaire study. Moreover, by comparing food waste value that was declared in questionnaires and reported in diaries, we confirm that the awareness of food waste quantities is heavily biased. The results confirm that the average food waste value is significantly higher when gathered through diaries, while questionnaires are able to catch less than one-third of food waste determinants.
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CAB Reviews 13, 056, pp 1-8, 2018
The majority of food waste is generated at the consumption stage. Research on consumer food waste... more The majority of food waste is generated at the consumption stage. Research on consumer food waste is increasing very fast, as well as the effort in the quantification of the amount of food waste generated at home. This review analisys the most relevatn studies in this regard, with the aim of 1) reporting the main findings on the amount of food waste generated at household level and 2)comparing estimates from studies conducted with different methodological approaches, to highlight possible influences of methods over findings [...]
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International Journal of Consumer Studies, 2018
Household food waste is considered to be the largest share of food waste along the food supply ch... more Household food waste is considered to be the largest share of food waste along the food supply chain. Given that its recoverability is also more challenging compared to food waste in other stages of the chain, most studies on household food waste adopt a pre‐emptive approach by aiming to identify and address consumer beliefs, attitudes and actions that are linked to food waste. In scientific literature, household food waste has often been studied in relation to the habit of purchasing discounted food products (DFP). However, findings have been contradictory. Specifically, while some authors found that deal‐prone consumers are usually of lower income and therefore display a wiser and more attentive attitude towards grocery shopping, other authors reported that the purchase of discounted products was usually linked to compulsive shopping, hence resulting in higher food waste quantities at home. Due to these discrepant findings, a definitive answer on the impact of DFP on household food waste does not currently exist in the literature. This paper analyses the correlation between the purchase of DFP and weekly household food waste quantities. To do so, we examine (a) the results of a food waste diary experiment carried out on a representative sample of 385 households in Italy in February 2017, and (b) the results of a 23‐items Computer Assisted Web Interview survey administered to the same householders, in which shopping habits were investigated. Results revealed no evidence of either a positive or negative relationship between the purchase of DFP and household food waste quantities. Frequency of grocery shopping was the only variable found to have a significant impact on household food waste quantities.
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This paper aims to assess the reliability of questionnaires as a method of quantifying household ... more This paper aims to assess the reliability of questionnaires as a method of quantifying household food waste, thus providing context regarding the validity of existing Italian estimates.
Thirty households were involved in a diary study that was conducted for one week. The participating households were first asked about their food waste quantities in a questionnaire. Half of the households who filled their diaries properly were then audited through waste sorting analysis performed on their garbage. Non-parametric tests were used to test for differences in food waste estimates between audited and non-audited households, as well as differences among estimates obtained through different quantification methodologies.
[Claudia Giordano, Luca Falasconi, Simone Piras, Matteo Boschini Are questionnaire a reliable method to detect food waste quantities? British Food Journal, Vol. 120 Issue: 12, pp.2885-2897, https://doi.org/10.1108/BFJ-02-2018-0081]
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Pospettive per il PINPAS (Piano Nazionale di Prevenzione degli Sprechi Alimentari) e per la carta... more Pospettive per il PINPAS (Piano Nazionale di Prevenzione degli Sprechi Alimentari) e per la carta di Bologna dopo il 24 Novembre 2014 (Bologna "Stop food waste Feed the Planet")
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Thesis Chapters by Claudia Giordano
It has been estimated that one third of edible food destined for human consumption is lost or was... more It has been estimated that one third of edible food destined for human consumption is lost or wasted along the food supply chain globally. Much of the waste comes from Global North, where consumers are considered as the bigger contributors. Different studies tried to analyze and estimate the Household Food Waste (HFW), especially in UK and Northern Europe. The result is that accurate studies at national level exist only in UK, Finland and Norway while no such studies are available in Italy, except for survey- based researches. Though, there is a widespread awareness that such methods might be not able to estimate Food Waste. Results emerging from literature clearly suggest that survey estimate inferior amounts of Food Waste as a result, if compared to waste sorting and weighting analysis or to diary studies. The hypothesis that household food waste is under-estimated when gathered through questionnaires has been enquired into. First, a literature review of behavioral economics and heuristics has been proposed; then, a literature review of the sector listing the existing methodologies to gather national data on Household Food Waste has been illustrated. Finally, a pilot experiment to test a mixed methodology is proposed. While literature suggests that four specific cognitive biases might be able to affect the reliability of answers in questionnaires, results of the present experiment clearly indicate that there is a relevant difference between how much the individual thinks to waste and he/she actually does. The result is a mixed methodology based on questionnaire, diary and waste sorting, able to overcome the cons of each single method.
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Blog by Claudia Giordano
Food Hub Magazine, 2019
Per leggere l'articolo intero, scaricate la rivista FoodHubMagazine! /Download the article at the... more Per leggere l'articolo intero, scaricate la rivista FoodHubMagazine! /Download the article at the link:
https://www.foodhubmagazine.com/
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In un articolo proposto dalla rivista Eurochoises nel 2015, della Agricoltural Economics Society ... more In un articolo proposto dalla rivista Eurochoises nel 2015, della Agricoltural Economics Society and European Association of Agricoltural Economists, Ulrich Koester propone una lettura critica dei dati sullo spreco alimentare.
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Riproponiamo un articolo pubblicato sull’Huffington Post il 28 settembre 2016, che illustra uno d... more Riproponiamo un articolo pubblicato sull’Huffington Post il 28 settembre 2016, che illustra uno dei possibili impatti della legge francese contro lo spreco alimentare sul settore del recupero e della redistribuzione. “Se una legge come questa [la legge francese] fosse attuata in un paese come la Danimarca, le ONG e il terzo settore affogherebbero letteralmente nel cibo. [...] In questo modo, il problema dello spreco alimentare viene spinto solo più in basso lungo la filiera mentre la sua causa principale – ovvero, la sovrapproduzione di cibo – non viene affrontata.
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E’ stato rilasciato il report intitolato “Recommendations and guidelines for a common European fo... more E’ stato rilasciato il report intitolato “Recommendations and guidelines for a common European food waste policy framework”. Il report sarà pubblicato a breve sul sito fusions.org. Tra gli autori Paolo Azzurro, che collabora con il progetto Reduce.
Per gli studiosi di spreco alimentare o per chiunque si ritrovi ad affrontare il tema per lavoro, è un manuale assolutamente da leggere.
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Riproponiamo un articolo pubblicato sul blog della London School of Economics, a cura di Pat Capl... more Riproponiamo un articolo pubblicato sul blog della London School of Economics, a cura di Pat Caplan, professoressa di antropologia presso la Goldsmiths, University of London. [...] Pat Caplan ha raccontato la storia di alcuni attori chiave, principalmente beneficiari ma anche direttori di food banks, per conoscere e narrare il fenomeno così come vissuto dall’interno.
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Invitiamo alla lettura di un articolo pubblicato su Foodwastestudies.com lo scorso febbraio. Il f... more Invitiamo alla lettura di un articolo pubblicato su Foodwastestudies.com lo scorso febbraio. Il focus è l’efficacia delle azioni per la riduzione del food waste all’interno della strategia denominata “Circular Economy”.
Il senso del post riprende in parte le considerazioni che Luca Falasconi proponeva sulla legge Gadda in un precedente contributo sul nostro blog. In entrambi gli articoli ci si domanda se il recupero a fini solidali o energetici degli sprechi alimentari equivalga davvero alla soluzione definitiva del problema, in termini di impatti ambientali.
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Papers by Claudia Giordano
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Thirty households were involved in a diary study that was conducted for one week. The participating households were first asked about their food waste quantities in a questionnaire. Half of the households who filled their diaries properly were then audited through waste sorting analysis performed on their garbage. Non-parametric tests were used to test for differences in food waste estimates between audited and non-audited households, as well as differences among estimates obtained through different quantification methodologies.
[Claudia Giordano, Luca Falasconi, Simone Piras, Matteo Boschini Are questionnaire a reliable method to detect food waste quantities? British Food Journal, Vol. 120 Issue: 12, pp.2885-2897, https://doi.org/10.1108/BFJ-02-2018-0081]
Thesis Chapters by Claudia Giordano
Blog by Claudia Giordano
https://www.foodhubmagazine.com/
[SECONDA USCITA]
Per gli studiosi di spreco alimentare o per chiunque si ritrovi ad affrontare il tema per lavoro, è un manuale assolutamente da leggere.
Il senso del post riprende in parte le considerazioni che Luca Falasconi proponeva sulla legge Gadda in un precedente contributo sul nostro blog. In entrambi gli articoli ci si domanda se il recupero a fini solidali o energetici degli sprechi alimentari equivalga davvero alla soluzione definitiva del problema, in termini di impatti ambientali.
[OPEN ACCESS]
Thirty households were involved in a diary study that was conducted for one week. The participating households were first asked about their food waste quantities in a questionnaire. Half of the households who filled their diaries properly were then audited through waste sorting analysis performed on their garbage. Non-parametric tests were used to test for differences in food waste estimates between audited and non-audited households, as well as differences among estimates obtained through different quantification methodologies.
[Claudia Giordano, Luca Falasconi, Simone Piras, Matteo Boschini Are questionnaire a reliable method to detect food waste quantities? British Food Journal, Vol. 120 Issue: 12, pp.2885-2897, https://doi.org/10.1108/BFJ-02-2018-0081]
https://www.foodhubmagazine.com/
[SECONDA USCITA]
Per gli studiosi di spreco alimentare o per chiunque si ritrovi ad affrontare il tema per lavoro, è un manuale assolutamente da leggere.
Il senso del post riprende in parte le considerazioni che Luca Falasconi proponeva sulla legge Gadda in un precedente contributo sul nostro blog. In entrambi gli articoli ci si domanda se il recupero a fini solidali o energetici degli sprechi alimentari equivalga davvero alla soluzione definitiva del problema, in termini di impatti ambientali.
Towards an harmonized measurement of food waste according to the Waste directive
SDG 12.3
Financed by the Ministry of Environment, Land and Sea of Italy