| Title: | Effects of Pre-Processing Hot-Water Treatment on Aroma Relevant VOCs of Fresh-Cut Apple Slices Stored in Sugar Syrup |
| Author(s): | Rux G; Efe E; Ulrichs C; Huyskens-Keil S; Hassenberg K; Herppich WB; |
| Address: | "Department of Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), 14469 Potsdam, Germany. Research Group Quality Dynamics/Postharvest Physiology, Division Urban Plant Ecophysiology, Humboldt-Universitat zu Berlin, 14195 Berlin, Germany" |
| ISSN/ISBN: | 2304-8158 (Print) 2304-8158 (Electronic) 2304-8158 (Linking) |
| Abstract: | "In practice, fresh-cut fruit and fruit salads are currently stored submerged in sugar syrup (approx. 20%) to prevent browning, to slow down physiological processes and to extend shelf life. To minimize browning and microbial spoilage, slices may also be dipped in a citric acid/ascorbic acid solution for 5 min before storage in sugar syrup. To prevent the use of chemicals in organic production, short-term (30 s) hot-water treatment (sHWT) may be an alternative for gentle sanitation. Currently, profound knowledge on the impact of both sugar solution and sHWT on aroma and physiological properties of immersed fresh-cuts is lacking. Aroma is a very important aspect of fruit quality and generated by a great variety of volatile organic compounds (VOCs). Thus, potential interactive effects of sHWT and sugar syrup storage on quality of fresh-cut apple slices were evaluated, focusing on processing-induced changes in VOCs profiles. Intact 'Braeburn' apples were sHW-treated at 55 degrees C and 65 degrees C for 30 s, sliced, partially treated with a commercial ascorbic/citric acid solution and slices stored in sugar syrup at 4 degrees C up to 13 d. Volatile emission, respiration and ethylene release were measured on storage days 5, 10 and 13. The impact of sHWT on VOCs was low while immersion and storage in sugar syrup had a much higher influence on aroma. sHWT did not negatively affect aroma quality of products and may replace acid dipping" |
| Keywords: | chemical prevention minimal processing ready-to-eat fruit salads sugar syrup immersion volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINERux, Guido Efe, Efecan Ulrichs, Christian Huyskens-Keil, Susanne Hassenberg, Karin Herppich, Werner B eng F4001902MD5/Bundesministerium fur Wirtschaft und Energie/ Switzerland 2020/01/16 Foods. 2020 Jan 10; 9(1):78. doi: 10.3390/foods9010078" |
