Assessment of quality impairment of printed paper packaging from alternative raw materials in contact with soybean oil

Soybean is an important industrial crop grown for oil and protein production. Soybean oil is the second most widely produced edible oil. Except as edible oil, soybean is widely used in human nutrition as flour, milk, cheese and sauces, while soy lecithin is an inevitable additive in many food products. It should be emphasized that soybean has become indispensable in the production of meat and dairy substitute products as the fastest growing trend in the food industry. In addition to human and animal nutrition, soybean is also important for the pharmaceutical, textile and chemical industries and in the production of biodiesel fuel. Many of the listed soybean products also require appropriate packaging that complies with environmental regulations. Due to the global trend of increasing consumption of soybean products, within the scope of this research, the impact of soybean oil on the print quality of paper packaging from alternative raw materials was monitored. The deterioration of the original quality of the print with black UV ink applied by digital, flexographic, gravure, screen and offset printing techniques was evaluated after 24 hours of contact with soybean oil based on measured spectrophotometric values.