Effect of Sulphur Dioxide and Storage Temperature on the Sensory Properties of Clarified Apple Juice

Autor: David A. Heatherbell, Cindy Lederer, J. H. Flores, Mina R. McDaniel
Rok vydání: 1990
Předmět:
Zdroj: Journal of Food Science. 55:728-730
ISSN: 1750-3841
0022-1147
DOI: 10.1111/j.1365-2621.1990.tb05216.x
Popis: Red Delicious apple juice was processed by ultrafiltration (UF) with SO2 (minimum oxidation) and without SO2 (maximum oxidation) and stored for 12 months at 2°C or 20°C. After storage, a trained panel evaluated the juices using descriptive analysis. The treatments (±SO2 2°C and 20°C) were analyzed for pH, total acidity, soluble solids, free SO2, and total phenols. A sharp decline in total phenols in the treatments without SO2 indicated that oxidation had occurred. Apple juice with minimum oxidation (+ SO2) was scored significantly higher in fresh apple aroma than the oxidized juice (-SO2). Juice stored at 20°C was significantly less estery and stronger in chemical off-odor than juice stored at 2°C.
Databáze: OpenAIRE