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The valorization of food wastes and byproducts has become a major subject of research to improve the sustainability of the food chain. This narrative review provides an overview of the current trends in the use of food byproducts in the development of dairy foods. We revised the latest data on food loss generation, the group of byproducts most used as ingredients in dairy product development, and their function within the food matrix. We also address the challenges associated with the sensory properties of the new products including ingredients obtained from byproducts, and consumers’ attitudes towards these sustainable novel dairy foods. Overall, 50 studies supported the tremendous potential of the application of food byproducts (mainly those from plant-origin) in dairy foods as ingredients. There are promising results for their utilization as food additives for technological purposes, and as sources of bioactive compounds to enhance the health-promoting properties of dairy products. However, food technologists, nutritionists and sensory scientists should work together to face the challenge of improving the palatability and consumer acceptance of these novel and sustainable dairy foods.

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The aim of the present study was to evaluate the use of winery byproduct extracts (grape pomace, seed and skin) and a mixture of inulin-type fructans (inulin and FOS) as suitable ingredients for the development of yogurts with antioxidant and antidiabetic properties. Their effect on the physicochemical, textural, microbiological and sensory parameters of yogurts was evaluated during 21 days of refrigerated storage. The incorporation of winery byproduct extracts in yogurt resulted in a significant increase (p < 0.05) in total phenolic content (TPC) and antioxidant and antidiabetic properties, compared to the controls. The grape skin yogurt showed the highest (p < 0.05) TPC (0.09 ± 0.00 mg GAE/g yogurt) and antioxidant capacity (7.69 ± 1.15 mmol TE/g yogurt). Moreover, the grape skin yogurt presented the highest (p < 0.05) inhibition of the activity of the enzyme α-glucosidase (56.46 ± 2.31%). The addition of inulin-type fructans did not significantly (p > 0.05) modify the overall antioxidant capacity or inhibition of the enzyme α-glucosidase of control and winery byproduct extract yogurts. Yogurts containing winery byproduct extracts and dietary fiber achieved high overall acceptance scores (6.33–6.67) and showed stable physicochemical, textural and microbiological characteristics during storage, assuring an optimal 21-day shelf life. According to their antioxidant and antidiabetic properties, we propose the yogurt containing grape skin extract, together with inulin and FOS, as a novel food product for the promotion of sustainable health.

Purpose The artisanal cheese industry in the Community of Madrid (CM) in Spain has recently experienced an increased development despite its traditionally limited cheese and milk production. The purpose of this paper is to explain this phenomenon by identifying the determinants of consumer attitudes towards cheese consumption in relation to the offer provided by recent artisan cheese producers. Design/methodology/approach A phone survey (n = 1,111 consumers) consisting of 17 questions was carried out to analyse cheese consumption culture in the CM. Principal component analysis was used to identify the factors that determine cheese-purchasing variance. Findings The first component was explained by hedonic (38 per cent of variance), followed by health aspects (24 per cent of variance) and price (15 per cent of variance). Price was identified as the most important criterion when purchasing cheese (67 per cent of consumers), followed by fat (57 per cent) and salt content (56 per cent). Results indicate a low cheese consumption culture in Madrid, as 48 per cent of consumers did not know exactly what kind of cheese they normally consumed. The type of milk used in cheese production was used to identify consumer profiles for market segmentation. Sheep and goat cheese consumers valued local production food quality and may be the driving force behind the expansion of artisanal cheese industry in Madrid. Research limitations/implications Madrid Region is one of the most important markets in Spain and Europe; however, local cheeses are not a traditional product in the market. Practical implications This paper offers a very interesting approach about how consumers’ culture can support a new local agricultural industry. Social implications Rural entrepreneurs can innovate focussing on new consumers demands. Local and handcrafted products are an opportunity in rural and periurban areas. Originality/value This paper shows consumer preferences and attitudes towards the novel artisan cheese sector that has expanded in the CM.