Finding value in waste: Circular Economy Initiatives in NGOs in Brazil and Togo to reduce food wast
DOI:
https://doi.org/10.5902/1983465986917Keywords:
Circular economy, Food waste, Non-governmental organizations, Food security, UpcyclingAbstract
Objective: Food waste can be repurposed through methods such as composting, reverse logistics, and anaerobic digestion using Circular Economy (CE) techniques. This study aims to analyze the application of Circular Economy by NGOs in Brazil (Ecozinha) and Togo (ENPRO) to address food waste.
Methodology: This research was a collaborative effort. Data was analyzed using the ReSOLVE framework through Document analysis and questionnaires. Four managers, two from each country, played a crucial role in completing the questionnaires (Google Forms), making them an integral part of this study.
Results: Both NGOs employ innovative regenerative approaches, converting waste into compost to enhance soil and food production. Ecozinha (Brazil) is an intermediary for proper waste disposal, while ENPRO (Togo) collects and transforms organic waste into value-added products. Ecozinha aids establishments in waste management, promoting the Circular Economy. ENPRO enhances sanitation by valuing waste. Both NGOs use composting to close the material cycle, sharing compost with farmers.
Theoretical implications: Applying a theoretical framework to an empirical case uncovers new avenues for research. Further exploration is recommended to create more resilient, fair, and adequate food systems.
Practical implications: By identifying opportunities and barriers and developing a framework illustrating collaborative relationships, this research provides valuable insights for producers, entrepreneurs, and government decision-making.
Originality: This study fills a significant gap in the literature. No studies have addressed the valorization and transformation of food waste by non-governmental organizations in developing countries, making this research a novel and significant contribution to the field.
Downloads
References
Alvares, C., Guarnieri, P., & Ouro‐Salim, O. (2022). Reducing food waste from a circular economy perspective: The case of restaurants in Brazil. World Food Policy, 8(2), 208-224. DOI: https://doi.org/10.1002/wfp2.12046
Andersen, M. S. (2007). An introductory note on the environmental economics of the circular economy. Sustainability science, 2(1), 133-140. DOI: https://doi.org/10.1007/s11625-006-0013-6
Bardin, L. (1977). L'analyse de contenu. Ed (70), vol. 69. Paris: Presses universitaires de France.
Bianchi, M., & Cordella, M. (2023). Does circular economy mitigate the extraction of natural resources? Empirical evidence based on analysis of 28 European economies over the past decade. Ecological Economics, 203, 107607. DOI: https://doi.org/10.1016/j.ecolecon.2022.107607
Bocken, N., Strupeit, L., Whalen, K., & Nußholz, J. (2019). A review and evaluation of circular business model innovation tools. Sustainability, 11(8), 2210. DOI: https://doi.org/10.3390/su11082210
Boon, E. K., & Anuga, S. W. (2020). Circular Economy and Its Relevance for Improving Food and Nutrition Security in Sub-Saharan Africa: the Case of Ghana. Materials Circular Economy, 2(1), 1-14. DOI: https://doi.org/10.1007/s42824-020-00005-z
Borrello, M., Lombardi, A., Pascucci, S., & Cembalo, L. (2016). The seven challenges for transitioning into a bio-based circular economy in the agri-food sector. Recent patents on food, nutrition & agriculture, 8(1), 39-47. DOI: https://doi.org/10.2174/221279840801160304143939
Brasil (2010). Lei nº 12.305, de 2 de agosto de 2010. Política Nacional de Resíduos Sólidos.
Brasil (2024). Política Nacional de Economia Circular. Retrieved from: https://www12.senado.leg.br/noticias/materias/2024/03/19/senado-aprova-politica-nacional-de-economia-circular-texto-vai-a-camara.
Campos, R. D. C. L., Boas, L. H. D. B. V., & Brito, M. J. (2024). Food safety, consumption behavior, and personal values: an integrative review. Revista de Administração da UFSM, 17(3), e4-e4. DOI: https://doi.org/10.5902/1983465986918
Cerqueira-Streit, J.A.; Guarnieri, P.; Endo, G.Y.; Colares-Santos, L. (2023). Loop, virtualization and exchange: operations management practices in the brazilian packaging chain. Future Studies Research Journal, 15, 1, 01-24. DOI: https://doi.org/10.24023/FutureJournal/2175-5825/2023.v15i1.740
Cerqueira-Streit, J. A. C., Guarnieri, P., Sousa, P. H. R. D., & Camillis, P. K. D. (2024). Mechanism of change towards the Circular Economy: a case study in the packaging sector under the lens of Institutional Theory. Revista de Administração da UFSM, 16, e3 DOI: https://doi.org/10.5902/1983465974072
Claudia, P. P., Isabel, H., Sonia, C., Ana, C., & Patricia, A. (2023). Towards halving food waste: A comparative study using orange juice by-product in dairy desserts. Heliyon, 9(4). DOI: https://doi.org/10.1016/j.heliyon.2023.e15403
Confederação Nacional da Indústria. (2019). Economia circular oportunidades e desafios para a indústria brasileira. Retrieved from: https://www.portaldaindustria.com.br/publicacoes/2018/4/economia-circular-oportunidades-e-desafios-para-industria-brasileira/.
Corsi, A.; Kovaleski, J. L.; Pagani, N. R. (2017). A Economia Circular no Brasil: Uma revisão sistemática de literatura. In Congresso Brasileiro de Engenharia de Produção. São Paulo. 8 ed, 12p.
Cristóbal, J., Castellani, V., Manfredi, S., & Sala, S. (2018). Prioritizing and optimizing sustainable measures for food waste prevention and management. Waste Management, 72, 3-16. DOI: https://doi.org/10.1016/j.wasman.2017.11.007
Davies, A. R. (2019). Urban food sharing: Rules, tools and networks. Bristol: Policy Press. DOI: https://doi.org/10.56687/9781447349860
Diaz-Ruiz, R., Costa-Font, M., López-i-Gelats, F., & Gil, J.M. 2019. Food waste prevention along the food supply chain: A multi-actor approach to identify effective solutions. Resources, Conservation and Recycling, 149, 249-260. https://doi.org/10.1016/j.resconrec.2019.05.031 DOI: https://doi.org/10.1016/j.resconrec.2019.05.031
Do, Q., Mishra, N., Colicchia, C., Creazza, A., & Ramudhin, A. (2022). An extended institutional theory perspective on the adoption of circular economy practices: Insights from the seafood industry. International Journal of Production Economics, 247, 108400. DOI: https://doi.org/10.1016/j.ijpe.2021.108400
Dora, M., Biswas, S., Choudhary, S., Nayak, R., & Irani, Z. (2021). A system-wide interdisciplinary conceptual framework for food loss and waste mitigation strategies in the supply chain. Industrial Marketing Management, 93, 492-508. DOI: https://doi.org/10.1016/j.indmarman.2020.10.013
Dou, Z., Y. Wang, Y. Hao, Z. Cui. (2022). Reducing food’s resource and climate footprints via food waste upcycling. https://doi.org/10.21203/rs.3.rs-1404610/v1 DOI: https://doi.org/10.21203/rs.3.rs-1404610/v1
ECOZINHA. (2023a). Premissas e valores. Retrieved from: https://www.institutoecozinha.org.br/sobre.
ECOZINHA. (2023b) Curso "como trabalha uma ecozinha: Apostila para colaboradores (2023). Retrieved from: https://www.institutoecozinha.org.br/_files/ugd/985f74_0cfd73c80ebd434f97bf1caded4808a8.pdf.
EMF, Ellen MacArthur Foundation. (2013). Towards the circular economy, economic and business rationale for an accelerated transition. Cowes, UK: Ellen MacArthur Foundation.
EMF, Ellen MacArthur Foundation. (2014). Towards the Circular Economy: Accelerating the scale-up across global supply chains. World Economic Forum Reports, (January), 64.
EMF, Ellen MacArthur Foundation. (2015). Growth within: a Circular Economy Vision for a Competitive Europe, London.
EMF, Ellen MacArthur Foundation. (2017). Uma economia circular no Brasil: Uma abordagem exploratória inicial. (Acesso em: 26 outubro 2021).
ENPRO. (2023a). Website oficial. Retrieved from: https://enpro-togo.org/.
ENPRO. (2023b). Valorisation des déchets organiques municipaux en compost, pour améliorer la gestion des déchets et développer l'agriculture locale péri-urbaine dans 5 villes d'Afrique. Retrieved from:
European Comission (2019). Research & innovation projects relevant to the circular economy strategy: calls 2016 – 2018: Horizon 2020. Retrieved from: https://ec.europa.eu/research/environment/pdf/h2020_projects_circular_economy_2016-2018.pdf.
Falcone P.M., Imbert E. (2017). Bringing a Sharing Economy Approach into the Food Sector: The Potential of Food Sharing for Reducing Food Waste. Springer. DOI: https://doi.org/10.1007/978-3-319-50088-1_10
FAO. (2019). FAO framework for the Urban Food Agenda. Rome, FAO. https://doi.org/10.4060/ca3151en. Access in 11 Jun. 2021. DOI: https://doi.org/10.4060/ca3151en
Ferrari M.Z. (2016). The Risks and Opportunities of the Sharing Economy: Beyond Uncertainties in the Sharing Economy: Opportunities for Social Capital. European Journal of Risk Regulation, 7(4), 664-674. DOI: https://doi.org/10.1017/S1867299X00010102
Ferreira, P. G., da Silva, F. C., & Ferreira, V. F. (2017). A Importância da Química para a Economia Circular. Revista Virtual de Química, 9(1). DOI: https://doi.org/10.21577/1984-6835.20170025
Ferronato, N., Rada, E. C., Portillo, M. A. G., Cioca, L. I., Ragazzi, M., & Torretta, V. (2019). Introduction of the circular economy within developing regions: A comparative analysis of advantages and opportunities for waste valorization. Journal of environmental management, 230, 366-378. DOI: https://doi.org/10.1016/j.jenvman.2018.09.095
Galgano F., Condelli N., Favati F., Di Bianco V., Perretti G., & Caruso M.C. (2015). Biodegradable packaging and edible coating for fresh-cut fruits and vegetables. Italian Journal of Food Science, 27(1), 1-20.
Gallagher, M. S., Mahajan, P. V., & Yan, Z. (2011). Modelling chemical and physical deterioration of foods and beverages. In Food and beverage stability and shelf life (pp. 459-481). Woodhead Publishing. DOI: https://doi.org/10.1533/9780857092540.2.459
Geissdoerfer, M., Pieroni, M. P., Pigosso, D. C., & Soufani, K. (2020). Circular business models: A review. Journal of cleaner production, 277, 123741. DOI: https://doi.org/10.1016/j.jclepro.2020.123741
Ghisellini, P., Cialani, C., & Ulgiati, S. (2016). A review on circular economy: the expected transition to a balanced interplay of environmental and economic systems. Journal of Cleaner production, 114, 11-32. DOI: https://doi.org/10.1016/j.jclepro.2015.09.007
Guarnieri, P., Bianchini, A., Rossi, J., Silva, L. C., Trojan, F., Vieira, B. O., & Lizot, M. (2023). Transitioning towards a circular economy under a multicriteria and the new institutional theory perspective: A comparison between Italy and Brazil. Journal of Cleaner Production, 137094. DOI: https://doi.org/10.1016/j.jclepro.2023.137094
Guarnieri, P., Cerqueira-Streit, J. A., & Batista, L. C. (2020). Reverse logistics and the sectoral agreement of packaging industry in Brazil towards a transition to circular economy. Resources, conservation and recycling, 153, 104541. DOI: https://doi.org/10.1016/j.resconrec.2019.104541
Guldmann, E., & Huulgaard, R. D. (2019). Circular business model innovation for sustainable development. In Innovation for Sustainability (pp. 77-95). Palgrave Macmillan, Cham. DOI: https://doi.org/10.1007/978-3-319-97385-2_5
Hellal, W., & Koraï, B. (2023). The impact of innovation level and emotional response on upcycled food acceptance. Food Quality and Preference, 107, 104849. DOI: https://doi.org/10.1016/j.foodqual.2023.104849
Homrich, A. S., Galvão, G., Abadia, L. G., & Carvalho, M. M. (2018). The circular economy umbrella: Trends and gaps on integrating pathways. Journal of Cleaner Production, 175, 525-543. DOI: https://doi.org/10.1016/j.jclepro.2017.11.064
Impoco (2017). Circular Economy: promoting business and environmental sustainability on local, community-based project. Master thesis in Industrial Engineering and Management. Retrieved from: https://fenix.tecnico.ulisboa.pt › downloadFile.
Islam, K. N. (2017). Greenhouse gas footprint and the carbon flow associated with different solid waste management strategy for urban metabolism in Bangladesh. Science of the Total Environment, 580, 755-769. DOI: https://doi.org/10.1016/j.scitotenv.2016.12.022
Jamaludin, H., Elmaky, H. S. E., & Sulaiman, S. (2022). The future of food waste: Application of circular economy. Energy Nexus, 7, 100098. DOI: https://doi.org/10.1016/j.nexus.2022.100098
Kalmykova, Y., Sadagopan, M. Rosado, L. (2018). Circular economy: From review of theories and practices to development of implementation tools. Resources, Conservation and Recycling, 135, 190-201. DOI: https://doi.org/10.1016/j.resconrec.2017.10.034
Kazancoglu, Y., Ozkan-Ozen, Y. D., Mangla, S. K., & Ram, M. (2020). Risk assessment for sustainability in e-waste recycling in circular economy. Clean Technologies and Environmental Policy, 1-13. DOI: https://doi.org/10.1007/s10098-020-01901-3
Khan, A. M., & Osińska, M. (2022). Energy consumption under circular economy conditions in the EU countries. Energies, 15(21), 7839. DOI: https://doi.org/10.3390/en15217839
Kirchherr, J., Yang, N. H. N., Schulze-Spüntrup, F., Heerink, M. J., & Hartley, K. (2023). Conceptualizing the Circular Economy (Revisited): An Analysis of 221 Definitions. Resources, Conservation and Recycling, 194, 107001. DOI: https://doi.org/10.1016/j.resconrec.2023.107001
Koledzi, K. E. (2011). Valorisation des déchets solides urbains dans les quartiers de Lomé (Togo): approche méthodologique pour une production durable de compost (Doctoral dissertation, Limoges).
Koppers, M. (2020). A peaceful fight against food waste in Amsterdam: an explorative case study on the impact of food waste prevention initiatives. Dissertation. Amsterdam University. Holland.
Korhonen J et al. (2018) Circular economy as an essentially contested concept. Journal of Cleaner Production 175: 544–552. DOI: https://doi.org/10.1016/j.jclepro.2017.12.111
Lacy P., Rutqvist J. (2016). Des déchets à la richesse: les avantages de l’économie circulaire. Paris: MA Éditions-ESKA, 304 p.
Lawson, K. (2020). Les Togolais sont "obligés de sacrifier leurs biens pour accéder à la nourriture". Retrieved from: https://www.voaafrique.com/a/les-togolais-sont-oblig%C3%A9s-de-sacrifier-leurs-biens-pour-acc%C3%A9der-%C3%A0-la-nourriture-/5673657.html.
Lugo, S. D. R., Kimita, K., & Nishino, N. (2023). Characteristics of decision process towards Circular Food Economy: A review. Cleaner Logistics and Supply Chain, 100104. DOI: https://doi.org/10.1016/j.clscn.2023.100104
McDonough, W., & Braungart, M. (2002). Design for the triple top line: new tools for sustainable commerce. Corporate Environmental Strategy, 9(3), 251-258. DOI: https://doi.org/10.1016/S1066-7938(02)00069-6
Merli, R., Preziosi, M., & Acampora, A. (2018). How do scholars approach the circular economy? A systematic literature review. Journal of cleaner production, 178, 703-722. DOI: https://doi.org/10.1016/j.jclepro.2017.12.112
Moraes, F.T.F., Gonçalves, A.T.T., Lima, J.P, & Lima, R.S. (2023) Transitioning towards a sustainable circular city: How to evaluate and improve urban solid waste management in Brazil. Waste Management and Research, 41(5), 1046-1059. DOI: https://doi.org/10.1177/0734242X221142227
Moshtaghian, H., Bolton, K., & Rousta, K. (2023). Upcycled food choice motives and their association with hesitancy towards consumption of this type of food: a Swedish study. British Food Journal. DOI: https://doi.org/10.1108/BFJ-09-2022-0757
Närvänen, E., Mattila, M., Keränen, J., Kaivonen, I., & Nurminen, M. (2022). Framing value propositions in the food waste business: A sociocultural approach. Industrial Marketing Management, 105, 211-222. DOI: https://doi.org/10.1016/j.indmarman.2022.06.008
Newsholme, A., Deutz, P., Affolderbach, J., & Baumgartner, R. J. (2022). Negotiating stakeholder relationships in a regional circular economy: discourse analysis of multi-scalar policies and company statements from the north of England. Circular Economy and Sustainability, 2(2), 783-809. DOI: https://doi.org/10.1007/s43615-021-00143-9
Nijman-Ross, E., Umutesi, J. U., Turay, J., Shamavu, D., Atanga, W. A., & Ross, D. L. (2023). Toward a preliminary research agenda for the circular economy adoption in Africa. Frontiers in Sustainability, 4, 1061563. DOI: https://doi.org/10.3389/frsus.2023.1061563
Oliveira Costa, F. H., Moraes, C. C., Silva, A. L., Delai, I., Chaudhuri, A., & Pereira, C. R. (2022). Does resilience reduce food waste? Analysis of Brazilian supplier-retailer dyad. Journal of Cleaner Production, 338, 130488. DOI: https://doi.org/10.1016/j.jclepro.2022.130488
Oldfield, T. L., White, E., & Holden, N. M. (2016). An environmental analysis of options for utilising wasted food and food residue. Journal of environmental management, 183, 826-835. DOI: https://doi.org/10.1016/j.jenvman.2016.09.035
Oppermann, M. (2000). Triangulation: A Methodological Discussion. International Journal of Tourism Research, 146(2), 141–146. DOI: https://doi.org/10.1002/(SICI)1522-1970(200003/04)2:2<141::AID-JTR217>3.3.CO;2-L
Osterwalder, A., & Pigneur, Y. (2010). Business model generation: a handbook for visionaries, game changers, and challengers. John Wiley & Sons.
Osterwalder, A., Pigneur, Y., Bernarda, G., & Smith, A. (2014). Value proposition design: How to create products and services customers want. John Wiley & Sons.
Ouro-Salim, O., & Guarnieri, P. (2022b). Circular economy of waste in agrifood supply chain: A review. Thunderbird International Business Review, 1–16. https://doi.org/10.1002/tie.22274. DOI: https://doi.org/10.1002/tie.22274
Ouro-Salim, O., Guarnieri, P., & Leitão, F. O. (2022). The use of Big Data to mitigate waste in agri-food supply chains. World Food Policy, 1–21. https://doi.org/10.1002/wfp2.12055. DOI: https://doi.org/10.1002/wfp2.12055
Paisios, A. Y., Paisios, E., Kotouzas, D., Kontodimas, D., Milonas, P., Rumbos, C. I., ... & Manios, T. (2023). Upcycling nutrients from food waste and agri-food byproducts into animal feed, fertilizers, and soil amendments, using insects: Creating awareness and technical know-how in Greece. Poster Session - Chania 2023 – UEST. 10th International Conference on Sustainable Solid Waste Management.
Rasool, K., Hussain, S., Shahzad, A., Miran, W., Mahmoud, K. A., Ali, N., & Almomani, F. (2023). Comprehensive insights into sustainable conversion of agricultural and food waste into microbial protein for animal feed production. Reviews in Environmental Science and Bio/Technology, 1-36. DOI: https://doi.org/10.1007/s11157-023-09651-6
Raworth, K. (2017). A Doughnut for the Anthropocene: humanity's compass in the 21st century. The lancet planetary health, 1(2), e48-e49. DOI: https://doi.org/10.1016/S2542-5196(17)30028-1
Rosa, L. A. B. D., Cohen, M., Campos, W. Y. Y. Z., Ávila, L. V., & Rodrigues, M. C. M. (2023). Circular economy and sustainable development goals: main research trends. Revista de Administração da UFSM, 16(1), e9. DOI: https://doi.org/10.5902/1983465971448
Saidani, M., Leroy Y., Cluzel, F. and Kendall, A. (2019) A taxonomy of circular economy indicators, Journal of Cleaner Production, Elsevier, 2019, 207, pp542–559. DOI: https://doi.org/10.1016/j.jclepro.2018.10.014
Schanes, K., Dobernig, K., & Gözet, B. (2018). Food waste matters-A systematic review of household food waste practices and their policy implications. Journal of Cleaner Production, 182, 978-991. DOI: https://doi.org/10.1016/j.jclepro.2018.02.030
Schreier, M. (2012). Qualitative Content Analysis in Practice. London: SAGE Publications. DOI: https://doi.org/10.4135/9781529682571
Sharma, C., & Deutsch, J. M. (2023). Upcycling in the context of biotechnology-based solutions for food quality, loss, and consumer perception. Current Opinion in Biotechnology, 81, 102920. DOI: https://doi.org/10.1016/j.copbio.2023.102920
Shurson, G. C., Urriola, P. E. & van de Ligt, J. L. G. 2022. Can we effectively manage parasites, prions, and pathogens in the global feed industry to achieve One Health? Transboundary Emerg. Dis. 69, 4-30. https://doi.org/10.1111/tbed.14205 DOI: https://doi.org/10.1111/tbed.14205
Silva, F. D. M., Souza, I. V., Zanon, J. A., Nunes, G. M., Da Silva, R. B., & Ferrari, S. (2015). Produção de Mudas de Juçara com Resíduos Agroindustriais e Lodo de Esgoto Compostados/Juçara Seedling Production With Agroindustry Wastes And Composted Sewage Sludge. Revista Brasileira de Engenharia de Biossistemas, 9(2), 109-121. DOI: https://doi.org/10.18011/bioeng2015v9n2p109-121
Silva, V. P. M., & Capanema, L. X. D. L. (2019). Public policies in solid waste management: compared experiences and challenges for Brazil. BNDES Setorial, Rio de Janeiro, v. 25, n. 50, 153-200.
Stahel, W. R. (2016). The circular economy. Nature, 531(7595), 435-438. DOI: https://doi.org/10.1038/531435a
Taufek, Norhidayah Mohd and Mohamad Zulkifli, Nor Fatin Najihah and Ahmad Nazri, Hamizah. (2023). Upcycling of Food Waste Generated from the Fresh Market by Utilising Black Soldier Fly Larvae: Influence on Growth, Bioconversion, and
Nutritional Composition. Available at SSRN: https://ssrn.com/abstract=4388263 or http://dx.doi.org/10.2139/ssrn.4388263. DOI: https://doi.org/10.2139/ssrn.4388263
Tchonkouang, R. D., Onyeaka, H., & Miri, T. (2023). From Waste to Plate: Exploring the Impact of Food Waste Valorisation on Achieving Zero Hunger. Sustainability, 15(13), 10571. DOI: https://doi.org/10.3390/su151310571
Thiaw, I. (2017). What role can circular economy play in delivering the Paris Agreement? Institute for European Environment Development Policy. Retrieved from: https://ieep.eu/news/ what-role-can-circulare-economy-play-in-delivering-the-
parisagreement,7 May 2019.
Tu, J. C., Chan, H. C., & Chen, C. H. (2020). Establishing circular model and management benefits of enterprise from the circular economy standpoint: A case study of Chyhjiun Jewelry in Taiwan. Sustainability, 12(10), 4146. DOI: https://doi.org/10.3390/su12104146
Turner, R. K., & Pearce, D. W. (1990). The ethical foundations of sustainable economic development. International Institute for Environment and Development.
Ünal, E., Urbinati, A., & Chiaroni, D. (2019). Managerial practices for designing circular economy business models: The case of an Italian SME in the office supply industry. Journal of manufacturing technology management, 30(3), 561-589. DOI: https://doi.org/10.1108/JMTM-02-2018-0061
World Resource Institute. SDG Target 12.3 on Food Loss and Waste: 2021 Progress Report. https://champions123.org/publication/sdg-target-123-food-loss-and-waste-2021-progress-report
Yadav, V., Sarker, A., Yadav, A., Miftah, A. O., Bilal, M., & Iqbal, H. M. (2022). Integrated biorefinery approach to valorize citrus waste: A sustainable solution for resource recovery and environmental management. Chemosphere, 293, 133459. DOI: https://doi.org/10.1016/j.chemosphere.2021.133459
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Omar Ouro-Salim, Jorge Alfredo Cerqueira Streit, Ayawovi Djidjogbe Fanho
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors of articles published by ReA/UFSM retain the copyright of their works, licensing them under the Creative Commons (CC-BY 4.0), which allows articles to be reused and distributed without restriction, provided that the original work is properly cited.