Consumer Preferences, Sensory Evaluation, and Color Analysis of Beetroot and Tomato Juices: Implications for Product Development and Marketing in Health-Promoting Beverages.

Background/objectives: This study explores the significance of beetroot and tomato juices, two prominent health-promoting foods known for their rich nutrient content and bioactive compounds. The growing consumer awareness of the link between diet and well-being emphasizes the need for food producers to align their products with health-conscious preferences. The aim of this research was to assess the composition, color, and sensory attributes-specifically color, taste, and odor-of various commercially available beetroot and tomato juices and to evaluate their acceptability among consumers.

Methods: A total of 50 dietitians (41 women and 9 men) participated in sensory evaluations and spectrophotometric color analysis using the CIELAB system, which measures lightness (L*), red-green tones (a*), and blue-yellow tones (b*). This dual approach allowed for a comprehensive understanding of how color characteristics correspond to sensory ratings.

Results: Results revealed significant differences in color and sensory attributes among the juices, with darker hues and higher red-tone values generally preferred by consumers. Juices with lower lightness (L*) and dominant blue or red tones (negative b*, higher a*) were consistently rated higher, suggesting that color plays a pivotal role in initial product acceptance. However, no single juice excelled across all sensory categories, indicating varied consumer preference.

Conclusions: The findings underscore the influence of color on consumer perception and its potential for guiding product development. For producers of functional beverages, optimizing visual appeal through precise control of color parameters could enhance marketability while balancing sensory attributes such as taste and aroma. These insights support the development of products that satisfy both nutritional goals and consumer expectations.