Smart Packaging Technologies for Food Quality and Safety

Conventional packaging functions as an inactive mechanism designed to protect the product from damaging conditions (Palanisamy et al., 2025).However, the rising demand for superior food quality and safety has prompted the advancement of intelligent and active packaging technologies that improve the features of traditional packaging (Rajan and Wani., 2025). Intelligent packaging provides quality identification and tracking technologies that effectively communicate information to consumers regarding the freshness, safety, and overall quality of the food. In contrast, active packaging aims to extend the shelf life and retain the quality of food during the processes of storage and distribution. (Palanisamy et al., 2025).

The packaging sector experiences rapid advancement, motivated by innovative technologies and increased consumer consciousness of sustainability and food safety. A rising trend is emerging in the food industry that combines technological advancement with environmental awareness. 

Smart packaging exists at an intersection of various scientific and engineering fields. It is characterized by systems that engage with their contents or surroundings to track and deliver real-time information on product status, authenticity, and safety.  Assessing product quality is based on exterior factors including humidity, temperature, and gas composition, as well as interior markers such as metabolites. 

Advancements in materials science, sensor technology, and supply chain integration will be crucial in transforming the idea of food integrity from a passive container into an active system that maintains food safety and quality throughout its entire lifecycle ( Davidescu et al., 2025).

Background of Food Packaging 

The advancement of food packaging illustrates an ongoing progression of material innovation influenced by scientific, regulatory, and societal dynamics. As lifestyles and consumer preferences are continuously developing, packaging methods are adapting accordingly. Consumers increasingly seek products that are easy to open, prepare, and offer detailed information. 

Early forms of food packaging utilized organic substances such as foliage, animal skins, and interlaced fibers, subsequently replaced by more resilient ceramic and metallic containers providing enhanced defense against humidity and vermin.

Industrialization facilitated the large-scale manufacturing of glass, metal, and paper packaging. Meanwhile, the development of petroleum-derived polymers in the mid-20th century transformed the industry due to their affordability, adaptability, and resilience, despite later environmental issues that prompted investigations into biopolymers. 

Figure (1): The History of Packaging ( Davidescu et al., 2025).

Smart Packaging Types

Smart packaging includes intelligent and active packaging as presented in Figure 2. Intelligent packaging combines conventional packaging with advanced electronic sensing apparatus, such as sensors, to monitor alterations in food quality, thereby safeguarding consumer safety before product delivery. Active packaging integrates active substances, such as antioxidants, into standard packaging materials to enhance the stability and quality of food products during their shelf life. Figure 3 represents the differences and similarities between intelligent and active packaging systems (Vasuki et al., 2023). Generally, smart packaging not only enhances the preservation of product quality during transit but also directly addresses consumer challenges. Its main focuses include: 1. Monitoring and maintaining quality; 2. Informing consumers; 3. Reducing waste; and 4. Optimizing supply chains ( Davidescu et al., 2025).

Figure (2): Smart Packaging Classification (Vasuki et al., 2023).

Figure (3): The Differences and Similarities of Smart Packaging (Vasuki et al., 2023).

Intelligent Packaging

Sometimes, it is hard to assess the condition of food inside a package from its outside appearance. Intelligent packaging, with specific indicators, can show whether food is fresh and has been properly stored. A sensor is a device designed to detect, locate, and measure energy, providing signals that reflect physical or chemical properties. To qualify as a sensor, a device must deliver continuous signals and include two main parts: a receptor and a transducer. The receptor converts the physical or chemical property into energy that the transducer can measure. The transducer then converts this energy into an analytical signal that contains information about the sample's condition (Kršić and Urekar, 2024).

For instance, the "Keep-it" time and temperature indicator in Figure 4 serves as a measure of the product's lifespan by documenting the temperature to which the packaged fish products are subjected. When the item gets cold, the intelligent color indicator progresses slowly, and the dark bar extends, indicating that the meal is fresh. As the temperature rises, the intelligent color indicator accelerates and the strip contracts (Kršić and Urekar, 2024).

Figure (4): The Keep-It Indicator (Kršić and Urekar, 2024).

Sensor Types

Sensors constitute a fundamental component of smart packaging systems, providing continuous or periodic assessment of environmental and product-related parameters that may influence quality, safety, and shelf life. Sensors can be classified into various categories based on their intended applications and the particular requirements they are developed to detect (Kršić & Urekar, 2024).

1. Temperature Sensors

Temperature sensors detect and record variations in the thermal conditions surrounding the packaged product. Their application facilitates the assessment of temperature conditions throughout transportation and storage, enabling the identification of thermal excursions that may compromise product quality. For temperature-sensitive foods, exposure to elevated temperatures can accelerate microbial proliferation, chemical reactions, enzymatic activity, and subsequent deterioration. Figure (5) demonstrates a time and temperature indicator, which may be attached to transport containers or individual containers as a small-sized sticker; a permanent chemical alteration will be evident if the food is subjected to a temperature outside the allowed range. 

Figure (5): Schematic Illustration of The Time and Temperature Indicator. (a) Fresh-Check; (b) Timestrip (Fuertes et al., 2016).

2. Humidity Sensors

Humidity sensors quantify relative humidity within the packaging environment and are particularly important for moisture-sensitive products. Excessive humidity may promote condensation, microbial development, textural deterioration, or other forms of product degradation. Integrating humidity monitoring into packaging systems can therefore provide early indication of unfavorable moisture conditions and support improved preservation during distribution and storage.

3. Light Sensors

Light sensors quantify the intensity or duration of light exposure experienced by packaged products throughout the supply chain. Such monitoring is particularly relevant to light-sensitive foods, pharmaceuticals, and other products susceptible to photochemical deterioration. Prolonged or excessive exposure to light may initiate oxidation, pigment degradation, nutrient losses, or undesirable alterations in chemical composition and appearance.

4. Package-Opening Sensors

Package-opening sensors detect and record instances when the package seal or closure is disrupted. This information can provide valuable insight into the period during which the product becomes exposed to atmospheric conditions and potential contaminants. Such monitoring is particularly useful for establishing post-opening shelf-life conditions and improving traceability of product handling after initial distribution.

5. Odor Sensors

Odor sensors, also referred to as electronic-nose technologies, detect changes in volatile compounds associated with product deterioration. Their application is particularly relevant to food and cosmetic products, in which volatile profiles can indicate freshness, oxidation, fermentation, or spoilage. By identifying changes in characteristic odor patterns, these sensors can contribute to non-destructive quality assessment and provide an additional indicator of product condition (Kršić and Urekar, 2024). Figure (6) demonstrates an odor sensor where a perishable food emits volatile molecules, which are indicated by visible signs such as color changes.

Figure (6): Detection of Food Spoilage Using Odor Sensor (Palanisamy et al., 2021).

Freshness Indicator

Freshness indicators are an important component of intelligent packaging because they provide direct evidence of changes in food quality and freshness by responding to microbiological activity and chemical transformations occurring within the packaged product. Microbiological deterioration can be assessed through interactions between the indicator system and metabolites generated during microbial proliferation. Certain indicators are specifically designed to detect volatile or chemical compounds associated with quality deterioration. For example, ethanol-sensitive indicators can be incorporated into packaging to assess changes in products in which ethanol accumulation is associated with microbial activity or fermentation.

Carbon dioxide (CO₂) is another important marker of microbial deterioration because its concentration may increase as a consequence of microbial metabolism. However, the application of CO₂-based freshness indicators to meat products stored under modified-atmosphere packaging presents additional challenges. In these systems, CO₂ is intentionally incorporated at relatively high concentrations, making it difficult to distinguish microbial CO₂ production from the initial packaging atmosphere.

Colorimetric freshness indicators offer a particularly practical approach because changes in indicator color can provide an easily interpretable visual signal. Such responses can communicate information about the appropriate consumption period to consumers, distributors, retailers, and food processors, thereby supporting more informed decisions regarding product quality and remaining shelf life (Kršić and Urekar, 2024).

RipeSense™ is the initial intelligent sensor label that adjusts the color to represent the fruit's ripeness and serves as a freshness indicator. The process functions by the interaction of the aromas emitted by the fruit during its ripening; it starts as red, transitions to orange, and ultimately becomes yellow, based on the chosen degree of ripeness for consumption (Fuertes et al., 2016). Figure (7) represents the RipeSense Indicator.

Figure (7): Illustration of the RipeSense Indicator (Fuertes et al., 2016). 

Active Packaging

Active packaging typically enhances package functionality with the incorporation of an additional component. This innovative packaging solution guarantees that the food stays fresh and uncontaminated while prolonging the shelf life of the packaged item. The system can assist in decision-making, track and deliver information regarding alterations in food quality, and alert potential issues (Pérez et al., 2026).

It uses devices such as oxygen scavengers, moisture absorbers, antimicrobials, and controlled-release agents to respond to conditions that may cause food spoilage.  Figure (8) represents different methods of approach packaging.

Figure (8):Active Packaging Mechanisms (Deshmukh et al., 2023).   

Active packaging advantages include diminished spoilage, prolonged shelf life, and reduced dependence on artificial preservation agents, which makes it crucial to the industry's future ( Davidescu et al., 2025). 

The World Health Organization has estimated that over 200 varieties of illnesses are attributable to food tainted with microorganisms (bacteria, viruses, and parasites), with around 30 bacterial species being the main culprits of foodborne illness. Microorganisms, including bacteria, yeasts, and molds, are inherently found in numerous food items, and while certain types are benign, others may lead to spoilage or severe health issues. Controlling these microbes is an important issue in ensuring food safety and freshness. Traditional packaging can slow microbial growth but cannot fully prevent survival or spread. Active packaging, designed to target harmful microorganisms directly, involves smart materials that release natural plant substances, beneficial proteins, or tiny particles that weaken or destroy microbes before they thrive. 

Some systems also extract oxygen from the package, halting microbial multiplication. Studies with real foods show these technologies significantly reduce harmful microbes and extend the shelf life of products like meat, dairy, fruits, and vegetables. However, additional research is necessary to confirm their safety for humans and the environment, as well as their effectiveness across different food types (Pérez et al., 2026). 

Active packaging technology has evolved over the past several decades, driven by materials science research, sustainability concerns, and consumer demand for minimally processed food. Active packaging includes:

• The use of natural bioactive compounds, as presented in Figure (9),  such as (essential oils, plant extracts, and phenolic compounds) has grown, offering antioxidant and antimicrobial function while reducing reliance on synthetic additives.

• Encapsulation techniques and polymer blending control the release of these volatile or sensitive compounds, improving their stability and limiting off-flavors and off-odors in food.

• Bio-based and compostable polymers (chitosan, starch, and polylactic acid) are increasingly used, supporting packaging solutions aligned with circular economy principles (Pérez et al., 2026).

Figure (9):  Bioactive Compounds for Active Packaging Applications (Maurizzi et al., 2022).

Active Packaging Mechanism

Oxygen Scavenger

Oxygen is the major contributor of food oxidative spoilage. Its presence supports aerobic microbial growth, contributes to the development of off-flavors and off-odors, causes discoloration, and leads to nutrient degradation. For this reason, monitoring oxygen levels within food packages is essential to slowing these spoilage pathways. While oxygen-sensitive products can be packaged under modified atmosphere packaging (MAP) or vacuum conditions, neither method eliminates oxygen, and oxygen that diffuses through the packaging film over time cannot be extracted by these systems alone. Oxygen scavengers address this limitation by absorbing residual oxygen after sealing, thereby reducing quality deterioration in oxygen-sensitive foods (Kumar et al., 2026).

Carbon Dioxide Absorbers and Emitters

Incorporating carbon dioxide into the package headspace prevents microbial growth in fresh meat, poultry, fish, cheese, and baked products, and slows respiration rate in fresh produce. CO₂ concentrations of 10–80% extend shelf life in these food categories. With oxygen scavenger systems, oxygen removal generates a partial vacuum that can collapse flexible packages. The same effect occurs when packages are flushed with a gas mixture containing both CO₂ and O₂: the CO₂ dissolves into the product, producing a partial vacuum due to increased CO₂ solubility at lower temperatures. Exposing food to pure CO₂ for one to two hours before sale is known as soluble gas stabilization (SGS). Carbon dioxide scavengers function to eliminate excess CO₂ from within a package. This is primarily used in freshly roasted coffee, which releases a lot of CO₂. Sealing the package too early can trap the gas, leading to a potential burst (Kumar et al., 2026).

Antimicrobial Packaging

Antimicrobial packaging is a type of active packaging designed to prevent, inhibit, or slow the proliferation of microorganisms that could be found in the food or the packaging material itself. To manage pathogenic microbes in food, antimicrobial agents may be included in or applied onto food packaging materials. Natural antimicrobial substances encompass extracts from spices such as cinnamon, allspice, clove, thyme, rosemary, and oregano, as well as other plant extracts including onion, garlic, radish, mustard, and horseradish. Alternative natural antimicrobials originate from compounds generated by fungal and bacterial activity, such as the polypeptide nisin, natamycin, pediocin, and other bacteriocins (Kumar et al., 2026).

Moisture Control 

Moisture is a primary factor in food deterioration, and the function of a moisture regulator is to diminish the product's water activity to inhibit microbial proliferation. For Fresh vegetables and fruits, respiration accompanied by condensation happens when one section of the package is at a lower temperature than the surrounding sections. The presence of moisture in the packaging leads to the softening of dry, crispy items and the formation of hygroscopic substances such as milk powder, instant coffee, and confections. Moisture-absorbing pads, sheets, and blankets are employed to manage liquids from food items such as fish, meat, poultry, fruits, and vegetables (Kumar et al., 2026).

Antioxidants

Antioxidants are often utilized in food products to enhance their oxidation stability and extend their shelf life. Antioxidants are integrated into packaging films to serve as a source of antioxidants in some foods due to the rising consumer preference for fewer antioxidants and additives in food products. Natural antioxidants like vitamins C and E can be added to packaging films to minimize oxidative reactions like the formation of rancid odor and color changes in fatty fish. Additionally, vitamin E is stable under processing circumstances, safe, and efficacious for low- to medium-water-activity cereal and snack products (Kumar et al., 2026).

Ethanol Emitters

Ethanol emitters minimize deterioration and prolong shelf life by diffusing ethanol vapor into the headspace of food packaging, thereby suppressing the proliferation of spoilage-inducing microbes such as bacteria, yeast, and mold.  The antibacterial characteristics of ethanol contribute to preserving the quality of items such as mangoes, sliced wheat bread, and bayberries. Despite these advantages, traditional ethanol producers face issues such as irregular oxidation and undesirable odors (Kumar et al., 2026).

Smart Packaging Application in Food Products

Intelligent packaging is crucial for improving food safety and quality through the implementation of continuous tracking and management of environmental factors (AlHassan et al., 2025). Intelligent packaging systems can be utilized with dry solid products such as fruits and vegetables, semi-solid foods like yogurt and curd, and liquid foods such as drinks (Palanisamy et al., 2025).

The utilization of smart packaging technology in the preservation of fruits and vegetables has established considerable promise alongside the continuous progress of science and technology.  Smart packaging utilizes complex sensors, innovative materials, and Internet of Things (IoT) technology to control the storage conditions of fruits and vegetables quickly. This method successfully lowers food waste, improves food safety, and increases shelf life. The idea behind smart packaging is to monitor environmental parameters like temperature, humidity, and gas concentrations in real time and make exact adjustments based on data analysis to confirm the best possible storage conditions for fruits and vegetables. Gas control, humidity regulation, and antimicrobial action are just a few of the many uses for smart packaging technologies. These features allow the packaging to automatically adapt its internal environment to the unique needs of various fruits and vegetables, delaying the formation of mold and bacteria, extending freshness, and maintaining nutritional value. 

Regardless of its benefits, the extensive use of smart packaging technology presents many difficulties, such as raised expenses, restricted material variety and dependability, absence of standardization, and customer approval. 

Future technological advancements are expected to prioritize material innovation, enhanced integration of IoT and big data, and the encouragement of eco-friendly packaging solutions, all of which will advance the fruit and vegetable preservation sector toward improved efficiency, intelligence, and sustainability (Du et al., 2025).

Conclusion 

Packaging should be recognized as a whole system that provides numerous advantages across various sectors of society, including financial benefits, reduced food waste, improved food safety, support for the circular economy, and better adaptation to consumers' increasing everyday demands (Poli et al., 2023). 

Smart packaging reflects an essential development in the food sector's methodology for quality control and safety, transforming packaging from a basic passive barrier to an interactive, communicative basis (Poli et al., 2023). 

Advancements in incorporated sensing technologies, such as chemical, temperature, and humidity sensors, provide ongoing assessment of food quality and environmental parameters, hence promoting prolonged shelf-life and prompt identification of contamination. Intelligent packaging additionally integrates indicators, sensors, and data transport systems that improve transparency and traceability throughout supply chains.  The primary challenges involve ensuring sensor reliability, system adjustment, and compliance with evolving legal and safety regulations. Advances in AI and the Internet of Things are expected to further enhance predictive quality assurance, improving logistics, and facilitating autonomous packaging reactions (Davidescu et al., 2025). At the same time, active mechanisms including oxygen scavengers, antibacterial substances, and moisture regulators allow packaging to actively prevent deterioration rather than only indicating its occurrence.

To summarize, smart packaging emerges as a crucial component of sustainable food systems, merging innovation with accountability. 

References

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Davidescu, M. A., Pânzaru, C., Mădescu, B. M., Poroșnicu, I., Simeanu, C., Usturoi, A., Matei, M., & Doliș, M. G. (2025). Advances and Challenges in Smart Packaging Technologies for the Food Industry: Trends, Applications, and Sustainability Considerations. Foods, 14(24), 4347. https://doi.org/10.3390/foods14244347

Du, L., Huang, X., Li, Z., Qin, Z., Zhang, N., Zhai, X., Shi, J., Zhang, J., Shen, T., Zhang, R., & Wang, Y. (2025). Application of Smart Packaging in Fruit and Vegetable Preservation: A Review. Foods, 14(3), 447. https://doi.org/10.3390/foods14030447

Fuertes, G., Soto, I., Carrasco, R., Vargas, M., Sabattin, J., & Lagos, C. (2016). Intelligent packaging systems: Sensors and nanosensors to monitor food quality and safety. Journal of Sensors, 2016, Article 4046061. https://doi.org/10.1155/2016/4046061

Kršić, N., & Urekar, M. (2024). Smart packaging. In Proceedings of the International Conference IcETRAN. https://doi.org/10.69994/11Ic24015

Kumar, B., Tagalpallewar, G., Jay, P., & Maitrik, S. (2026). The Future of Food Packaging: A Review of Active Packaging and its Applications in Food Industry. ResearchGate, 8(3), 206–212.

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Pérez, E., Sanjuán, E., Jůzl, M., Raposo, A., Saraiva, A., Jaber, J. R., & Carrascosa, C. (2026). Active Antimicrobial Packaging Systems: Mechanisms of Microbial Control and Applications in Food Preservation. Biology, 15(4), 325. https://doi.org/10.3390/biology15040325

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Rajan, S. S., & Wani, K. M. (2025). A review of smart food and packaging technologies: Revolutionizing nutrition and sustainability. Food and Humanity, 4, 100593. https://doi.org/10.1016/j.foohum.2025.100593

Vasuki, M. T., Kadirvel, V., & Narayana, G. P. (2023). Smart packaging—An overview of concepts and applications in various food industries. 2(4). https://doi.org/DOI:10.1002/fbe2.12038

Visual References

Cover images: Caon, T., Martelli, S. M., & Fakhouri, F. M. (2017). New trends in the food industry: Application of nanosensors in food packaging. In Nanobiosensors (pp. 773–804). https://doi.org/10.1016/B978-0-12-804301-1.00018-7

Figure (1): Davidescu, M. A., Pânzaru, C., Mădescu, B. M., Poroșnicu, I., Simeanu, C., Usturoi, A., Matei, M., & Doliș, M. G. (2025). Advances and Challenges in Smart Packaging Technologies for the Food Industry: Trends, Applications, and Sustainability Considerations. Foods, 14(24), 4347. https://doi.org/10.3390/foods14244347

Figure (2) and Figure (3): Vasuki, M. T., Kadirvel, V., & Narayana, G. P. (2023). Smart packaging—An overview of concepts and applications in various food industries. 2(4). https://doi.org/DOI:10.1002/fbe2.12038

Figure (4): Kršić, N., & Urekar, M. (2024). Smart packaging. In Proceedings of the International Conference IcETRAN. https://doi.org/10.69994/11Ic24015

Figure (5): Fuertes, G., Soto, I., Carrasco, R., Vargas, M., Sabattin, J., & Lagos, C. (2016). Intelligent packaging systems: Sensors and nanosensors to monitor food quality and safety. Journal of Sensors, 2016, Article 4046061. https://doi.org/10.1155/2016/4046061