Do oranges need to be refrigerated
By
Dr Juliana Davies de Oliveira (PhD)
| Reviewed by
Dr Anny Manrich (PhD)
The contents of this article are fact-based except otherwise stated within the article.
Author bio
Dr Juliana Davies de Oliveira graduated in Biological Sciences with an emphasis on microbiology and immunology. She is PhD in Biochemical Process Engineering. With more than 15 years of experience, she has expertise in Bioprocess, Fermentation, Industrial Microbiology, Biotechnology, Bioinputs, Biopolymer and Bioinsecticide production and Biosecurity.
Dr Juliana Davies de Oliveira’s Highlights
- Researcher Consultant at the SENAI Innovation Institute (ISI – SENAI CETIQT) and member of the Internal Biosafety Commission (CIBio) of SENAI CETIQT
- Postdoctoral fellowship at the Catholic University of Brasilia/Brazil in the Postgraduate Program in Genomic Sciences and Biotechnology
- International Experience in Barcelona/Spain – Department of Chemical, Biological and Environmental Engineering at the Autonomous University of Barcelona/Spain.
- Coordinator and technical-scientific responsible for the Laboratory -Platform of Fermentation in Scale Pilot up to 125 L (Catholic University of Brasilia/Brazil)
- Collaborating researcher at the University of Brasilia/Brazil
- PhD and master’s degree in Chemical and Biochemical Process Engineering at the Federal at the University of Rio de Janeiro/Brazil
- Undergraduate professor at Catholic University of Brasilia/Brazil
- Bachelor’s degree in Biological Sciences: Microbiology and Immunology at the Federal University of Rio de Janeiro/Brazil
Professional profile:
Dr Juliana Davies de Oliveira was a Researcher Consultant for the Biotechnology platform of SENAI CETIQT/SENAI Institute of Innovation in Biosynthetic and Fibers, linked to the fermentation area. In addition, she was a member of the Internal Biosafety Commission (CIBio) of SENAI CETIQT
She played a role in leading the fermentation laboratory, including operational training of equipment; installation of a pilot fermenter at the Catholic University of Brasilia/Brazil.
She additionally was an undergraduate Professor in the Biological Sciences, Pharmacy and General Training courses in Postgraduate Courses (Catholic University of Brasilia/Brazil)
She was a researcher at the University of Brasilia/Brazil.
Besides that, Dr Juliana Davies de Oliveira has done a technical visit to the Autonomous University of Barcelona/Spain
Furthermore, she has experience in reviewing scientific articles at the Brazilian Journal of Microbiology and the Microbial Cell Factories.
Education:
- 2020 – Postdoctoral in Genomic Sciences and Biotechnology at the Catholic University of Brasilia/Brazil
- 2014 – PhD in Chemical and Biochemical Process Engineering at the Federal University of Rio de Janeiro/Brazil
- 2010 – Master’s degree in Chemical and Biochemical Process Engineering at the Federal University of Rio de Janeiro/Brazil
- 2008 – Bachelor in Biological Sciences (Microbiology and Immunology) at the Federal University of Rio de Janeiro/Brazil
Relevant Published work & citations of Dr Juliana Davies de Oliveira
Articles
De Oliveira, Juliana Davies; Carvalho, Lucas Silva; Gomes, Antônio Milton Vieira; Queiroz, Lúcio Rezende; Magalhães, Beatriz Simas; Parachin, Nádia Skorupa. Genetic basis for hyper production of hyaluronic acid in natural and engineered microorganisms. Microbial Cell Factories, v. 15, p. 119-126, 2016.
Oliveira, Juliana D.; Lopes, L. M. A.; Pimenta, Flávia D.; Sérvulo, Eliana F. C. Low Cost Production of Pullulan Obtained From Granulated Sugar and Different Nitrogen Sources. International Journal of Engineering and Technology, v. 15, p. 11-17, 2015.
Oliveira, Juliana D.; Pimenta, Flávia D.; Lopes, Lea M. A.; Sérvulo, Eliana F. C. Rheological Analysis of Biopolymer Produced by Aureobasidium pullulans in Different Sources of Nitrogen. Macromolecular Symposia (Online), v. 319, p. 143-149, 2012.
Patents
De Oliveira, Juliana Davies; Parachin, N. S.; Gomes, A. M. V.; Carvalho, Lucas Silva; Magalhães, B. S. Levedura recombinante da espécie Kluyveromyces lactis para a produção de grandes cadeias de ácido hialurônico. 2016, Brasil. Register number: BR10201602018; Registration institution: INPI – National Institute of Industrial Property. Deposit: 08/31/2016
De oliveira, juliana davies; parachin, nádia skorupa; gomes, a. M. V.; magalhães, b. S.; carvalho, lucas silva. Levedura recombinante da espécie Hansenula polymorpha para a produção de grandes cadeias de ácido hialurônico. 2016, Brasil. Register number: BR10201602019; Registration institution: INPI – National Institute of Industrial Property. Deposit: 08/31/2016.
Book Chapters
Silva, O. B.; Carvalho, Lucas Silva; Almeida, G. C.; Oliveira, Juliana D.; Carmo, T. S.; Parachin, N. S. Biogas – Turning Waste into Clean Energy. In: Angela Faustino Jozala. (Org.). Fermentation Processes. 1ed.Rijeka, Croatia: Intech, 2017, v., p. 161-180.
Carvalho, L.; Silva, O. B.; Almeida, G. C.; Oliveira, Juliana D.; Parachin, N. S.; Carmo, T. S. Production Processes for Monoclonal Antibodies. In: Angela Faustino Jozala. (Org.). Fermentation Processes. 1ed.Rijeka, Croatia: Intech, 2017, v., p. 181-198.
Conference Papers
Oliveira, J. D.; Lopes, L. M. A.; Pimenta, Flávia D.; De Paula, R. C. M.; Sérvulo, Eliana F. C. Avaliação de metodologia para recuperação de pululana livre de melanina. In: 12º Congresso Brasileiro de Polímeros, 2013, Florianópolis. 12º Congresso Brasileiro de Polímeros, 2013.
Oliveira, J. D.; Lopes, L. M. A.; Pimenta, Flávia D.; Sérvulo, Eliana F. C. Produção de pululana em função das concentrações de carbono e nitrogênio. In: XIX Simpósio Nacional de Bioprocessos, 2013, Foz do Iguaçu. XIX Simpósio Nacional de Bioprocessos, 2013.
Oliveira, J. D.; Pimenta, F. D.; Servulo, E. F. C. Produção de pululana a partir de matéria-prima de baixo custo. In: 11º Congresso Brasileiro de Polímeros, 2011, Campos do Jordão/SP. 11º Congresso Brasileiro de Polímeros, 2011. p. 68.
Oliveira, J. D.; Pimenta, F. D.; Servulo, E. F. C. Avaliação reológica do biopolímero produzido por Aureobasidium pullulans em diferentes fontes de nitrogênio. In: 11º Congresso Brasileiro de Polímeros, 2011, Campos do Jordão/SP. 11º Congresso Brasileiro de Polímeros, 2011. p. 19.
Oliveira, J. D.; Pimenta, F. D.; Lopes, L. M. A.; Sarquis, M. I. M.; Servulo, E. F. C. Seleção de estirpe e fonte de nitrogênio para produção de biopolímero a partir de matéria-prima de baixo custo. In: XVII Congresso Brasileiro de Engenharia Química, 2008, Recife. XVII Congresso Brasileiro de Engenharia Química, 2008.
Oliveira, J. D.; Servulo, E. F. C.; Pimenta, F. D.; Lopes, L. M. A. Utilização de matéria prima de baixo custo para produção de biopolímero. In: IV Simpósio de Microbiologia Aplicada, 2009, Rio Claro/SP. Holos Environment – Suplemento 1 – IV Simpósio de Microbiologia Aplicada, 2009. v. 9.
You can view some of Dr Juliana’s work below and links to her professional profile:
Research Gate: https://www.researchgate.net/profile/Juliana-Oliveira-2/research
Google Scholar: https://scholar.google.com/citations?user=G3ZLG84AAAAJ&hl=pt-BR
Linkedin: linkedin.com/in/juliana-davies-de-oliveira-285749197
Reviewer bio
Dr Anny Manrich PhD is a food Engineer with expertise in Food Technology, Natural Polymers, Edible Films, Enzymes, and Nanotechnology. She writes and reviews content on these topics.
Dr Anny Manrich’s Highlights:
- Research and Technology at the Brazilian Agricultural Research Corporation
- PhD in Chemical Engineering with a focus on Biochemistry at the Federal University of Sao Carlos/ Brazil and a one-year scholarship at the Technical University of Munich/ Germany
- Bachelor of Food Engineering at the University of Campinas/ Brazil and a one-year scholarship at the Technical University of Munich/ Germany
“To solve a problem, global vision and multifactorial understanding are necessary. Therefore, in addition to expertise, one should seek multidisciplinary thinking connected with science and reality” – Dr Anny Manrich, PhD.
Professional Experience:
Dr Anny Manrich’s Experience Joining the Brazilian Agricultural Research Corporation, as soon as she completed her doctorate,
Dr Anny Manrich has worked on several projects, including the more than three-year partnership project with BRF, a major food producer in Brazil. As a postdoctoral fellow.
Dr Anny Manrich has also contributed to several business consultancies and research projects of the National Nanotechnology Laboratory System in areas such as food technology, fibres, films and coatings and Nanotechnology; in a very determined way, having a great team relationship, being creative and committed.
Growing concerns about the safe introduction of nanomaterials into today’s life emphasises the need to create regulatory documentation in front of characterising, using and testing them. Dr Anny Manrich worked for two years on a characterization project for nanoscale materials, with the aim of exploring their possible health effects.
Despite not having specific academic training in packaging or polymeric films, Dr Anny Manrich works at the Brazilian Agricultural Research Corporation in areas of edible and biodegradable films produced from agricultural waste and in the development of films with greater resistance to water, having articles published in renowned scientific journals, which demonstrates her multidisciplinary understanding and creativity.
In addition, she worked for four years as a consultant to a food company to develop a line of snacks that are healthy and that add functional ingredients, physiologically active compounds that bring health benefits, made from fruits and vegetables, enabling diet improvement, disease prevention and reduction of nutritional deficiencies.
Dr Anny Manrich participated as a member of the examination board for two Master’s exams and one PhD exam at the Department of Chemical Engineering of the Federal University of São Carlos.
Education:
- 2001 Bachelor in Food Engineering at the State University of Campinas, Brazil
- 1999 One year scholarship at the Technical University of Munich
- 2004 Master in Chemical Engineering at the Federal University of São Carlos, Brazil
- 2012 PhD in Chemical Engineering at the Federal University of São Carlos, Brazil
- 2010 One year scholarship at the Technical University of Munich
The main publications of Dr. Anny Manrich are:
Articles
Manrich, A., Moreira, F. K., Otoni, C. G., Lorevice, M. V., Martins, M. A., & Mattoso, L. H. (2017). Hydrophobic edible films made up of tomato cutin and pectin. Carbohydrate Polymers, 164, 83-91.
Mendes, J. F., Norcino, L. B., Martins, H. H. A., Manrich, A., Otoni, C. G., Carvalho, E. E. N., … & Mattoso, L. H. C. (2020). Correlating emulsion characteristics with the properties of active starch films loaded with lemongrass essential oil. Food Hydrocolloids, 100, 105428.
Norcino, L. B., Mendes, J. F., Natarelli, C. V. L., Manrich, A., Oliveira, J. E., & Mattoso, L. H. C. (2020). Pectin films loaded with copaiba oil nanoemulsions for potential use as bio-based active packaging. Food Hydrocolloids, 106, 105862.
Manrich, Anny, et al. Immobilization of trypsin on chitosan gels: Use of different activation protocols and comparison with other supports. International Journal of Biological Macromolecules 43.1 (2008): 54-61.
Manrich, Anny; Komesu, Andrea ; Adriano, Wellington Sabino; Tardioli, Paulo Waldir ; Giordano, Raquel Lima Camargo . Immobilization and Stabilization of Xylanase by Multipoint Covalent Attachment on Agarose and on Chitosan Supports. Applied Biochemistry and Biotechnology, v. 161, p. 455-467, 2010.
Mendes, J. F., Martins, J. T., Manrich, A., Neto, A. S., Pinheiro, A. C. M., Mattoso, L. H. C., & Martins, M. A. (2019). Development and physical-chemical properties of pectin film reinforced with spent coffee grounds by continuous casting. Carbohydrate polymers, 210, 92-99..
Milessi, T. S., Kopp, W., Rojas, M. J., Manrich, A., Baptista-Neto, A., Tardioli, P. W., … & Giordano, R. L. (2016). Immobilization and stabilization of an endoxylanase from Bacillus subtilis (XynA) for xylooligosaccharides (XOs) production. Catalysis Today, 259, 130-139.
Mendes, J. F., Norcino, L. B., Manrich, A., Pinheiro, A. C. M., Oliveira, J. E., & Mattoso, L. H. C. (2020). Development, physical‐chemical properties, and photodegradation of pectin film reinforced with malt bagasse fibers by continuous casting. Journal of Applied Polymer Science, 137(39), 49178.
Mendes, J. F., Martins, J. T., Manrich, A., Luchesi, B. R., Dantas, A. P. S., Vanderlei, R. M., … & Martins, M. A. (2021). Thermo-physical and mechanical characteristics of composites based on high-density polyethylene (HDPE) e spent coffee grounds (SCG). Journal of Polymers and the Environment, 29, 2888-2900..
Mendes, J. F., Norcino, L. B., Martins, H. H., Manrich, A., Otoni, C. G., Carvalho, E. E. N., … & Mattoso, L. H. C. (2021). Development of quaternary nanocomposites made up of cassava starch, cocoa butter, lemongrass essential oil nanoemulsion, and brewery spent grain fibers. Journal of Food Science, 86(5), 1979-1996.
Manrich, A., Martins, M. A., & Mattoso, L. H. C. (2021). Manufacture and performance of peanut skin cellulose nanocrystals. Scientia Agricola, 79.
Nascimento, V. M., Manrich, A., Tardioli, P. W., de Campos Giordano, R., de Moraes Rocha, G. J., & Giordano, R. D. L. C. (2016). Alkaline pretreatment for practicable production of ethanol and xylooligosaccharides. Bioethanol, 2(1)..
Manrich, Anny, de Oliveira, J. E., Martins, M. A., & Mattoso, L. H. C. Physicochemical and Thermal Characterization of the Spirulina platensis. J. Agric. Sci. Technol. B, v. 10, p. 298-307, 2020.
Book Chapter
Terra, I. A. A., Aoki, P. H., Delezuk, J. A. D. M., Martins, M. A., Manrich, A., Silva, M. J., … & Miranda, P. B. (2022). Técnicas de Caracterização de Polímeros. Nanotecnologia Aplicada a Polímeros, 614.
Conference Papers
Ferreira, L. F., Luvizaro, L. B., Manrich, A., Martins, M. A., Júnior, M. G., & Dias, M. V. (2017). Comparação da estabilidade de suspensões poliméricas de amido/tocoferol e quitosana/tocoferol. In: CONGRESSO BRASILEIRO DE POLÍMEROS, 14., 2017, Águas de Lindóia, SP.
Manrich, A., Hubinger, S. Z., & Paris, E. C. (2017). Citotoxicidade causada por nanomateriais: avaliação do micronúcleo. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos. Anais… São Carlos: Embrapa Instrumentação, 2017. p. 655-658.
Manrich, Anny, et al. Immobilization and Stabilization of Xylanase by multipoint covalent attachment on Glyoxyl Agarose Support. The 31st Symposium on Biotechnology for Fuels and Chemicals. 2009.
Manrich, Anny, et al. Application of immobilized xylanase on hydrolysis of soluble wood hemicelluloses after using microwave and organosolv pre-treatments. The 32nd Symposium on Biotechnology for Fuels and Chemicals. 2010.
You can view some of Dr Anny’s work below and links to her professional profile.
Research Gate: https://www.researchgate.net/profile/Anny-Manrich-2
Scopus: https://www.scopus.com/authid/detail.uri?authorId=23103497100
Google Scholar: https://scholar.google.com/citations?hl=en&user=Ea9qpr0AAAAJ
Linkedin: https://br.linkedin.com/in/anny-manrich-20693129
In this brief guide, we will address the query, “Do oranges need to be refrigerated?” We will also discuss what is the shelf life of oranges and how you need to store them.
Do oranges need to be refrigerated?
No, oranges do not need to be refrigerated. Although refrigerating can enlarge the shelf life of this fruit, it is not compulsory to store them there. When stored at room temperature, oranges can last for only10 days from the date of purchase. (1)
Raw whole oranges last for about 10-21 days when they are properly refrigerated from the date of purchase (1).
Once fruits are cut, sliced or chopped, they should be refrigerated in covered containers or frozen in plastic freezer containers. (4)
What are the factors that affect Orange shelf life?
The main factors that affect the shelf life of oranges are temperature and humidity;
- Storage temperature: Is the most important environmental factor in the post-harvest life of fresh fruits because of its dramatic effect on the rates of biological reactions, including respiration (2).
- Humidity: The oranges must be kept in a relatively dry environment. An environment too dry will lead to water loss, and an environment with too high humidity may lead to condensation and the enhanced growth of pathogens (3).
How to properly store oranges?
Whole oranges will keep for a few days to a week at room temperature, but the best way to store whole oranges though, is in the fridge.
Room Temperature
You can store your oranges on the countertop in a fruit bowl or in your pantry, but you need to know that this will only preserve your fruit for about 10 days (1).This is the way to keep your oranges juiciest and most flavorful, but this option it’s only recommended if you’re planning to use them soon.
Always store them in a cool, dry, and dark place to prevent rapid spoilage! Also, prevent storing them in spaces where the temperature fluctuates, as this can affect the shelf life.
Refrigerator
Raw whole oranges last for about 10-21 days when they are properly refrigerated from the date of purchase (1).
When peeled and cut the outside protective layer is removed, exposing the fresh cells, rich in water, sugars and organic acids. The leakage of nutrients will promote microbial growth and the damaged tissue also provides a portal of entry for establishing a microbial colony (2).
Cut or sliced oranges can last for up to 5 days if they are stored in refrigeration (2).
Freezer
You can freeze oranges whole or segmented. Freezing is generally suitable for preserving most fruits; however, the quality of the frozen product may vary depending on factors such as the type of fruit, its stage of maturity, and the packaging method. (5)
Generally, the flavor is well retained by freezing preservation. Texture may be softer than that of fresh fruit. (5)
They can last for about 10-12 months when kept in a plastic freezer bag in the freezer. (2)
To freeze oranges, you should first wash them in cold water and pat them dry using paper towels. Peel the oranges and try to remove as much pith as you can. Divide oranges into portions or what you can do is to separate all the slices of the oranges.
Put them in a freezer bag, remove the excess air from it and freeze it.
What signs indicate when oranges have rot?
There are a few signs that indicate that oranges have rot. You should consider the appearance, texture, and smell of the oranges.
Appearance
If you spot a mold or other type of microbial growth on your oranges then it means that your oranges have gone bad and the best thing you can do is to get rid of them.
If you notice fuzzy or discolored patches, it indicates spoilage. Be careful as toxins produced by molds (i.e., mycotoxins) could be very dangerous for your health. (6)
Moreover, you should check for any significant changes in color, if you spot some discoloration or brown specks on your orange, that is an indication that your orange is spoiled.
Also, the loss of moisture in a spoiled orange or in one that has begun to spoil will be noticeable for the dehydration and wrinkling of the skin.
Texture
An orange that feels soft and mushy, then it may be a sign that the orange is starting to spoil. It’s important to remember that the more an orange ripens, the softer it gets.
If you start noticing changes in the texture and hardness of your orange, then it’s safe to assume that it won’t be long until the orange is bad.
Smell
If you smell something foul, musty, or something that does not quite feel like the orange itself or if the tangy smell of the orange has weakened then it is the indication of a bad orange and you should get rid of it.
Spoiled oranges may emit a fermented, musty, or rotten odor. If your orange has mold in it, you should not smell it, since mold produces mycotoxins, and if you inhale orange mold, those mycotoxins enter your body and can make you ill. (7)
Other FAQs about Oranges that you may be interested in.
Should clementines be refrigerated?
Where are oranges grown in the US?
Conclusion
In this brief guide, we have addressed the query, “do oranges need to be refrigerated?” We have also discussed other queries related to the subject at hand.
Hope you found this blog useful. If you have any questions, please let us know.
Citations
- United States Department of Agriculture. Food Keeper.
- Rocha, A.M.C.N., Brochado, C.M., Kirby, R., Morais, A.M.M.B. Shelf-Life of chilled cut orange determined by sensory quality. Food Control, Vol. 6, No. 6, pp. 317-322.
- Owoyemi, A., Porat, R., Lichter, A., Doron-Faigenboim, A., Jovani, O., Koenigstein, N., Salzer, Y. Evaluation of the Storage Performance of ‘Valencia’ Oranges and Generation of Shelf-Life Prediction Models. Horticulturae 2022, 8(7), 570.
- United States Department of Agriculture. Ask USDA.
- Food and Drug Administration. Selecting and Serving Produce Safely.
- Drusch, S., Ragab, W. Mycotoxins in fruits, fruit juices, and dried fruits. J Food Prot; 66(8):1514-27.
- Balali, G.I., Yar, D.D., Afua Dela, V.G., Adjei-Kusi, P. Microbial Contamination, an Increasing Threat to the Consumption of Fresh Fruits and Vegetables in Today’s World“, International Journal of Microbiology, vol. 2020, Article ID 3029295, 13 pages, 2020.
