Food and Bioprocess Technology

, Volume 12, Issue 7, pp 1174–1184 | Cite as

Effects of Processing on Quality Attributes of Osmo-Dried Broccoli Stalk Slices

  • Nora Salina Md SalimEmail author
  • Yvan Gariѐpy
  • Vijaya Raghavan


In this study, the broccoli stalk was converted into dried product by using the osmotic dehydration as pre-treatment followed by microwave-assisted hot air drying as finish drying. The influences of these processing steps on the product quality such as vitamin C, total chlorophyll, total phenolic content, color, and texture of broccoli stalk slices were investigated. It has been demonstrated that when compared to fresh sample, osmotic dehydration pre-treatment resulted in a significant decrease (p < 0.05) in vitamin C content, chlorophyll content, and total phenolic content. In addition, the osmotically dehydrated product has minimal color changes and softer texture. While considering drying temperature as a factor, better quality retention was observed when osmotically dehydrated broccoli stalk slices were dried at a drying temperature of 40 °C.


Broccoli stalk Microwave-assisted drying Osmotic dehydration Drying kinetics Product quality 



The authors are grateful to Natural Sciences and Engineering Research Council of Canada (NSERC) for the financial support of this study and to Ministry of Education Malaysia and Universiti Malaysia Terengganu for the granted scholarship.


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Authors and Affiliations

  1. 1.School of Fundamental ScienceUniversiti Malaysia TerengganuKuala NerusMalaysia
  2. 2.Department of Bioresource Engineering, Faculty of Agricultural and Environmental SciencesMcGill University, Macdonald CampusQuebecCanada

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