Development and Characterisation of Fortified Yogurt with the Addition of Carrot Peel and Celery Peel as By-Products from the Vegetable Industry

<p>Developing products that meet consumer expectations can be a challenge for researchers. Yogurt is a palpable dairy product because it is versatile and can be eaten as a dessert and snack. The present work aims to develop a yogurt with the addition of carrot peel and celery peel to satisfy the current market requirements by reintegrating some vegetable by-products in the technological process of making yogurt but also to replace protein additives, which have the role of improving the rheological characteristics and sensory properties of yogurt. In this sense, a comparative analysis was made between yogurt with addition, classic yogurt, and yogurt with powdered milk. A non-numerical multi-criteria multi-personal agreement method described by Fadhil and collaborators was used to perform the sensory analysis (Fadhil et al., 2021). Physicochemical analysis of the samples was performed during a storage period of 18 days on the first day, the ninth day and the eighteenth day. The pH, titratable acidity, syneresis, water holding capacity and lactose content of the samples were measured. The results indicate an improvement in the degree of syneresis and the water retention capacity, especially in the second part of the storage time, of the yogurt with the addition of celery and carrot peels, compared to the other two samples. The evaluated sensory characteristics obtained better scores because the carrot and celery peels brought a unique flavor to the product.</p>