فصلنامه علوم و فنون بسته بندی
پیاپی 48 (زمستان 1400)

In this research, the effect of plastic coating impregnated with titanium dioxide nanoparticles on the post-harvest quality of seedless white fruit cultivars, Qezel Ozum and RishBaba during cold storage was investigated. For this purpose, healthy, uniform and free from any physical damage and microbial decay grape bunches were packed using polyethylene wrappers impregnated with titanium dioxide nanoparticles and stored for 80 days in a cold store with a temperature of 0±1°C and a relative humidity of 90±5%. The characteristics of total soluble solids, titratable acidity, ripening factor, pH and total phenolic content of grapes were measured at 20-day intervals. The statistical analysis of the results showed that the treatment of titanium dioxide nanoparticles had a significant effect in reducing the titratable acidity, pH, total phenol content and ripening coefficient compared to the control samples. The samples treated with titanium dioxide nanoparticles showed higher soluble solids and titratable acidity. The results showed that all three grape cultivars packed with polyethylene wrappers impregnated with titanium dioxide nanoparticles had higher quality than the control samples at the end of the storage period.

In today's competitive world with different types of goods, the packaging and appearance of the product can attract the customer's attention and create a special impression on buyers in order to successfully sell any product.The purpose of this study is the content analysis of the structural, graphical and informational elements of product packaging of nuts and dried fruits of Narmak brand and study its relationship with customers' purchasing decision, considering the role and importance of packaging in consumer buying behavior. The method of this study is descriptive survey research. The population of this study is 150 sales representatives of nuts and Dried Fruits of Narmak brand in eight provinces of Iran. In order to collect data, a questionnaire tool was used. The validity of the questionnaire was calculated using face validity and its reliability was calculated using Cronbach's alpha. Then, the data analysis was done using SPSS software and logistic regression. The results show that graphical elements of product packaging have a significant impact on purchasing decisions to buy Narmak brand products and structural elements of product packaging have the least effect.

Socio-economic development and variety of baking products, especially cakes, have led them to become an important part of the people’s food basket around the world. However, microbial contamination, lipid oxidation, loss of nutrients as well as proteins, can cause significant economic losses and also endanger the health of the consumer. The quality and safety specifications of products are highly dependent on packaging materials and packaging technology. Research into new packaging methods, including active packaging, is a tremendous breakthrough in solving economic and consumer safety problems, while at the same time offering innovative ways to extend the shelf life of products and maintain the quality of cakes. This review article examines the factors affecting the shelf life of the cake product and the antimicrobial and antioxidant factors and the use of natural materials in packaging in order to increase the shelf life of the product, and also the various active packaging materials with countless applications in this type of food products, including antimicrobial packaging. Antioxidant packaging, moisture absorbents and ethanol diffusers have been discussed.

Active packaging systems for food have more benefits and performance than conventional packaging which are designed only as a barrier to protect food against the external environment. Most active packages contain antimicrobial compounds. Since these particles may be swallowed with food when using active packaging, the food safety aspects should be considered and the migration of nanoparticles from packaging to food surfaces should be controlled. In addition, these particles can also cause respiratory and skin problems due to their ability to be released into the environment. Most active packaging systems contain antimicrobial compounds that are released at the food surface as microorganisms grow and multiply, therefore prevent the growth of germs and spoilage of food. The severity of this effect depends on the nature of the antimicrobial agent. Among these, nanocomposite systems have been designed with antibacterial properties which include antimicrobial agents at the nanoscale. They are able to expand the level involved in the reaction between food and antimicrobial components due to increasing surface to volume ratio. Therefore, these systems play a more effective role in increasing the shelf life of food compared to similar compounds.

Product packaging plays an important role in attracting consumers, incorporating them into product selection and acting as a brand communication tool. Dates are rich in nutrients and a rich source of carbohydrates, minerals, vitamins and dietary fiber. And can improve human health. considering these beneficial properties, date production has increased over 30 years. More than 1,500 types of date palms are grown in some parts of the world. In Iran, there are different cultivars such as Shahani, Zahedi, Mazafati, Barhi and Kabkab. The spoilage of this fruit by insects, microorganisms, chemical changes during storage is serious, especially in tropical and humid conditions. Packaging of dates and date products is important because dates are unique products in the market. Packaging systems are being developed to minimize the impact on the environment. At present, various new methods have been developed for dates packaging. This research is about the modern packaging of dates due to its important market share of export.

A variety of packaged food products are now available in supermarkets, which has increased consumer choice. In addition, the competition between packaged food products has also increased, and one of the effective methods by which companies can differentiate themselves from competitors in the market is packaging. One of the methods of creating differentiation through packaging is the presence of aesthetic aspects in packaging. The purpose of this research is to investigate the effect of product packaging aesthetic factors (packaging color, packaging material, font style, packaging design and printed information) on consumer purchase intention. The current research is applied in terms of purpose and descriptive-correlational in terms of method. The statistical population of this research is all the buyers and consumers of yogurt products in Hamedan. The sample size of 384 was determined using Cochran's table and the samples were selected using convenience sampling method. The data collection tool was an online questionnaire whose validity has been measured through content validity and construct validity (convergence and divergence). Cronbach's alpha and composite (structural) reliability have also been used to measure reliability. The analysis of the research data was done using the structural equation method and SPSS and SMART-PLS statistical software, and the results show that the product packaging has a significant effect on the consumer's purchase intention. It was also found that the packaging font style has the greatest impact on the consumer's purchase intention, followed by packaging printed information, packaging materials, packaging design and packaging color.