Effect of Low-calorie Sweeteners on Sensory, Physicochemical, and Quality Attributes of Goldenberry (Physalis peruviana L.) Juice

Abstract

Background: The goldenberry is a fruit that grows in the Andean valleys of Ecuador and Peru. The goldenberry has a high nutritional value, thanks to the presence of ascorbic acid, carotenoids, and total phenols. Also, this fruit has shown the ability to attenuate hepatorenal injuries, antidiabetic and antihypertensive effects, and hepatoprotective effects. Objective: The work aimed to take advantage of the nutritional and medicinal properties of the goldenberry (Physalis peruviana L.) by developing a juice substituting sucrose for low-calorie sweeteners. Also, this study evaluated the effect of these sweeteners on sensory, physicochemical, and quality of juice attributes. Methods: Different formulations were tested, varying the percentage of pulp, sweeteners (sucrose, sucralose, and acesulfame K), and stabilizer (xanthan gum). The formulations were subjected to sensory analysis using 48 semi-trained tasters. The acidity, pH, soluble solids, and density were analyzed using the methodology described in Ecuadorian standards. In addition, the nutritional and microbiological quality was analyzed, and a shelf-life study was carried out under normal and accelerated conditions. Results: The best formulation was elaborated with 30% goldenberry pulp, 0.016% acesulfame K, 0.0054% sucralose, and 0.1% xanthan gum. The best formulation showed 0.3% of protein, 0.3% of ash, 4% of carbohydrates, and 35 mg/100 g of vitamin C. Consumption of 500 ml of the beverage provided 17 Kcal. It can be preserved for 2.5, 1.6, and 0.8 months at 8, 20, and 35ºC storage temperatures, respectively. Conclusion: The best formulation scored better in odor and general acceptability attributes. Also, this formulation showed a synergistic effect between the fruit components and the low-calorie sweeteners, generating an effect that intensifies the sensory fruity aroma.