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Optimum utilization of animal protein byproducts results in the use of maximum production capacity in existing processing plants. The purpose of this research was to develop a new and ready-to-eat product from fish mince and chicken protein isolate with desirable sensory characteristics by using the D-optimal Mixture Design, Quantitative Anatomical Analysis (QDA), and Principal Components Analysis (PCA ). Initially, 13 prototypes containing different percentages of fish mince and chicken protein isolate (totaling 70% of the product formulation) were prepared. After sensory evaluation by QDA method, a prototype was selected as the optimum treatment, which included 50% fish mince and 20% chicken protein isolate and 30% other ingredients. The sensory stability of the optimum prototype was investigated in comparison with the control treatment during 90 days of frozen storage. Physicochemical analysis (pH, TVB-N, PV and TBARS) and microbial tests were also used to investigate the qualitative changes of the prototypes. The results showed that the optimum prototype had better sensory and quality indexes than the control sample. This study introduces chicken protein isolate as a new food ingredients. It also emphasizes the use of a combination application of QDA and PCA analysis and the D-optimal Mixture Design model in designing and manufacturing a product with the optimal formulation. Because these data will be applicable and valid for industrial scale production.

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In the past decades, numerous efforts have been made to systematize the process of developing new food products from idea generation to product commercialization. So, studies on consumer behavior in foods have led to particular changes in the processing of food and beverage products. Food industry is one of the most competitive industries in the country's economy, and manufacturing new products is one of the key pillars of success in food and drink processing units. On the other hand, the change in the taste and expectations of customers about the processed products makes the creation of new products inevitable in accordance with their demands. The present paper consists of two parts introducing "the process of developing a new food product" and the results of the research on "developing omega-3 enriched ice cream using this approach." The first part is the author's experience in teaching designing and manufacturing of food products in a number of abroad universities and research centers. The second part (case study) is an applied research carried out at the Animal Science Research Institute of Iran. The purpose of this article is to open up a window towards the science of food design and development, which in our country, unfortunately, has been systematically and scientifically less attention paid to it. This article will introduce researchers and experts in the food industry to the process of developing a new product and will be a useful guide for those interested in this science.

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Goat's milk yogurt has a high nutritional value and digestibility and less allergenicity than cow's milk products. The problem with goat's milk yogurt is the specific taste that results from the high concentrations of volatile fatty acids that cause goat's taste and limit consumers acceptance of this product. In this research, the effects of adding 20% pineapple and peach nectar on physicochemical (dry matter, fat, protein, acidity, synersis, water holding capacity and viscosity) and sensory properties of goat's milk yogurt during 28 days of refrigerated storage were evaluated. The results showed that adding nectar significantly reduced the amount of dry matter (p <0.05). In nectar-containing samples, dry matter content had increasing trend during storage. Fat and protein levels were significantly lower than control samples (p <0.05). The pH of nectar containing yogurts during storage was significantly lower and its acidity was significantly higher than that of control yogurt (p <0.05). The trend of synersis changes in nectar-containing yogurt samples was rising in the first week and then decreased until the end of the storage period and the process of changes in water storage capacity was initially decreasing and then increasing. The viscosity increased during the first week and then decreased significantly until the end of the storage period (p <0.05). The viscosity of nectar-containing yogurt samples was significantly lower than that of control sample (p <0.05). Sensory evaluation results showed that the highest overall acceptance score was given to the sample containing pineapple nectar (4.66, 4.46) and the lowest overall acceptance score to the sample containing peach nectar (3.36, 3.33) due to its dark color and sour taste on the 1st and 14th days respectively . Based on the experiments, the use of pineapple nectar is a good method in order to cover goat taste in goat's milk yogurt with preserved its qualitative characteristics.

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Lighvan cheese is a semi-hard salted cheese that is made without adding any starters and is often made from sheepchr('39')s raw milk with about 20-30% goatchr('39')s milk. Since traditional cheeses are made from raw milk, the presence of pathogenic bacteria in cheese is also significant. Lighvan cheese has been produced in the Lighvan area for a long time, but unfortunately many rural producers have not yet realized the importance of hygiene during production. This important issue highlights the need of knowledge transfer to improve the safety of the product to that community. With this approach, the project was implemented in Lighvan village in two stages. Initially, the health status of the existing cheese makers and the processing method in Lighvan area were examined. Then, to solve the health and technical problems of production, corrective measures were presented to the producers. In this regard, 9 cheese makers were randomly selected, of which 3 workshops cooperated to carry out corrective actions (second phase). First, raw milk, fresh curds and cheeses made from the same milk were sampled. The cheese samples were packed in 1 kg cans and stored for 3 months in caves in the area. The same cans were sampled on days 30, 60 and 90 and the were transferred to the laboratory in cold conditions and subjected to chemical, microbial and sensory analysis. The results indicate that the corrective actionss are effective in improving the microbial quality of Lighvan cheese. The authors believe that the knowledge transfer from research institutes (as a knowledge base) to rural producers, can improve the production method and hygienic quality of traditional products, may develop entrepreneurship and ensure the safety and quality of these products. Prosperity of the economic and living conditions of the villagers and the nomadic communities is another goal of this program.

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The meat products industry in the country has a history of more than 90 years. There are currently about 170 meat processing factories in Iran with a nominal capacity of more than 1.5 million tons per year, which is currently less than one third of this amount due to the economic and health conditions caused by the Covid-19 pandemic. The industry has faced many challenges over the years, including competition with other food processors and negative publicity about the unhealthiness of these products. On the other hand, technological advances in the food industry have made it difficult to stay in the market. Therefore, in order to survive the meat products industry in the market, it needs to change existing products or make new products by using management and knowledge transfer, as well as supporting applied research for correct information. In order to stay and succeed in the market, one must pay attention to the tastes and expectations of consumers and the factors influencing the development of a new product, especially the commercialization index, i.e. the technologyy readiness level. Knowledge management and knowledge transfer are among the approaches that need to be considered by the meat products industry and knowledge bases (organizations / research centers and universities). This article looks at the current situation of the meat products industry in the country and the existing challenges by introducing the process of developing new products and the need to use management and knowledge transfer in the industry for the success of these products in the market. Therefore, the nature of this article is qualitative and of an applied type, which has been written in the manner of documentary studies, reviewing sources and analyzing the existing conditions, and according to the authorchr('39')s experiences of about three decades in the meat products industry.