characteristics, are preserved depending on the type of products to be packaged. Nanomaterials are gradually being used in the food packaging industry; therefore a variety of advanced nanomaterial technology is being researched and developed for packaging materials. There have been studies of approximately 500 nano-packaging materials for industrial use, while nanotechnology is expected to manufacture 25% of all food packings. Nano-packaging can also conceive antimicrobials, minerals, enzymes, flavors, and nutraceuticals to enhance shelf life and performance. In this line, antimicrobial films are used as packaging material to improve the shelf life of perishable foods like fruits and dairy products [3–6].
Nanotechnology's potential role in the food technology sector is probably the most exciting in the immediate future, and it is emerging as one of the fastest developing areas of nano-research of agriculture and food. New developments in food processing, labeling, nutraceutical delivery, quality assurance, and healthy food have also been seen. Many organizations, scientists, inventors, and industries are developing new technologies, protocols, and products, which directly apply nanotechnology to farming and food products. Companies are now designing packaging materials that prolong food and beverage life and boost consumer safety through the use of nanotechnology in daily-based consumer packaging [6]. Food processing and control are the main subjects of food industry-related nanotechnology research and development. Effective and intelligent packaging is the leading advancement of food packaging that aims to enhance product quality and consistency as well as to maximize product longevity. Most businesses and industrial design nano-packaging like time–temperature indicators (TTIs) can react to undesirable or damaging changes under the worse effects of climatic pollution. They can self-repair themselves, thus making this nano-packaging as “active and smart packaging.”
Nanotechnology enhances the delivery of nutraceuticals, vitamins, or fragile micronutrients to everyday foods by creating small, edible capsules based on released nanoparticles to targeted locations in the body. Relevant health consequences are reduced frequency of cardiac disease, stroke, neurodegenerative diseases, and cancer [7, 8]. Nanoparticles are also used to introduce multiple functionalities such as color and odors as well as to be used as storage tanks for drug releases or fungicides. Despite considerable development in this area, nanotechnology remains a rare topic for food packaging, nanotechnology, and food science and technology. This chapter explores this knowledge gap by closely analyzing current developments in nano-package technology for food and drug systems and particular applications that gain immediate customer adoption and regulatory attention. This article examines this knowledge gap on the topics covered, which include bio-based packaging for environmentally safe biodegradable packaging; improved packages to enhance barrier properties, mechanical durability, and flexibility; active packaging of antimicrobials, flavor absorbers, and oxygen scavenging; and intelligent package features like freshness indicator, ripeness indicator, radio-frequency identification (RFID), and TTI. This chapter concludes with a concise overview of future nano-packaging technologies possibilities.
1.2 Nanotechnology Applications in Food Processing
Nanostructured food ingredients are developed to facilitate sensory attributes like appearance, taste, texture, and flavor. Nanotechnology increases the durability of different foods and reduces food waste caused by microbial infestation. Nanocarriers are presently used as a supply system without interfering with their basic morphology to transport food additives into food products. The particle size can directly affect the delivery of bioactive compounds to different sites since some cell lines have noticed that it is efficient to absorb only submicron nanoparticles but not larger microparticles [9–13].
Nanotechnology provides effective distribution systems with all the functionality mentioned earlier for encapsulation formulation, emulsions, biopolymer matrices, clear solutions, and colloids. Nano-polymers are intended to replace traditional products for food packaging. Nanosensors may show the existence of pathogenic microbes, toxins, and adulterants in food [14]. Nanoparticles have greater characteristics of encapsulation and release performance than traditional embossing methods. By nanoencapsulation of the masks scent or taste, the interactions between active ingredients and the food network that govern the release of active agents can be monitored. This method guarantees the supply of desired food ingredients at the desired level of production, storage, and usage. This nano-packing method is consistent with other ingredients in the device against moisture, fire, chemicals, and biological degradation. Moreover, these nanotechnologies-based food nutrition delivery systems can reach deep into the tissues and effectively distribute active agents to the target sites in the body because of their smaller scale [15–18].
1.2.1 Nanotechnology Applications in Preserving Meat Density, Taste, and Presentation
Nanotechnology offers several options to improve meat quality and taste. Nano-encapsulation techniques have been widely applied to enhance flavor release and retention and maintain the balance of food. These bioactive molecules nanocarriers are popular for their safety and supply-based feature worldwide. Rutin is a popular dietary flavonoid, but its use is limited in the food industry [19]. Its low solubility and ferritin nanoencapsulation have improved the solubility and the thermal and UV stability of the ferritin-trapped routines compared with the free routine. Thus, nanoemulsions are widely used in producing lipid-soluble biological compounds that can be generated with easy processing methods utilizing natural foods and can also be engineered to increase water dispersion and bioavailability. Nano-packagings are important ways to boost the bioavailability of nutraceutical compounds because of their subcellular size, which contributes to higher bioavailability than large particles and produces faster and longer releases of encapsulating food nutrient compounds. Many metal oxides such as titanium dioxide and silicon (SiO2) are widely used as colorants or flow agents in foodstuffs. SiO2 nanomaterial is also one of the nanomaterials widely common in foodstuffs with flavors [20].
These nanotechnology-based applications of modern nanocarriers can help the food industry preserve the meat color and taste and make the food colorful, visually attractive, and presentable for the consumers.
1.2.2 Nanotechnology Applications for Maintaining the Food Nutrient Value
Many bioactive compounds like lipids, short-chain fatty acids, functional chelates, probiotics, and antioxidants are vulnerable to acids and enzymes in the stomach and duodenum. The encapsulation of these bioactive compounds allows them not just to avoid such adverse conditions but also to readily assimilate easily. In addition to that, small edible nanoparticles are developed for significant health gain to increase the regular supply of pharmaceutical items, probiotics, vitamins, and fragile micronutrients. The different strategies for encapsulating miniatures to include nutrients such as protein and antioxidants more useful for specific nutritional and health benefits include nanocomposite, nano-emulsification, and nanostructure. Polymeric nanoparticles are sufficient to secure and transmit bioactive compounds to specific bioactive compound encapsulation functions (flavonoids and vitamins) [21–23].
1.3 Nanotechnology Functions for Preserving or Shelf Life
In functional foods, the bioactive components are sensitive to external factors and eventually deteriorated during transport and storage; nanoencapsulation of these bioactive nanocomponents improves its shelf life. Especially, nanoemulsion-based edible coating controls the fruit ripening and extends the shelf life of perishable commodity. Also, consumable nanocoats could be a barrier to the moisture on various foods and could provide colors, flavors, nutrients, enzymes, and anti-brews [24–26].
1.4 Nanotechnology in Food Packaging
In food packaging, monolayer films cannot satisfy all the requirement because different food commodities require different barrier and mechanical properties. Polymer nanocomposites are the latest materials aimed at solving this problem. Polymer nanocomposites are prepared by dispersing an inert, nanoscale filler in a polymeric matrix. The widely
