Journal article
Physicochemical Properties of Encapsulated Red Raspberry (Rubus idaeus) Powder: Influence of High-Pressure Homogenization
Drying technology, Vol.30(5), pp.484-493
04/01/2012
Handle:
https://hdl.handle.net/2376/118065
Abstract
Encapsulated red raspberry (Rubus idaeus) powders with gum arabic were produced using a spray-drying method. The raspberry puree samples were treated with and without high-pressure homogenizers prior to spray drying. The physicochemical properties of spray-dried raspberry powders were analyzed. The median particle size (X
50
) of raspberry powder produced with high-pressure homogenized puree (14.6 µm) was smaller than raspberry powder produced without high-pressure homogenization applied to puree (18.3 µm). Glass transition temperatures and water contents of encapsulated raspberry powders were not significantly different (p > 0.05) at equivalent water activities. High-pressure homogenization of puree resulted in greater apparent density and porosity for encapsulated raspberry powder. Greater particle size resulted in higher hygroscopicity and water solubility index (WSI) for encapsulated raspberry powder produced without high-pressure homogenization of puree. Anthocyanins concentration was greater in raspberry powder pretreated with high-pressure homogenization although powder exhibited lower brightness, redness, and yellowness.
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Details
- Title
- Physicochemical Properties of Encapsulated Red Raspberry (Rubus idaeus) Powder: Influence of High-Pressure Homogenization
- Creators
- Roopesh M Syamaladevi - Department of Biological Systems Engineering , Washington State UniversitySunil Kumar Insan - Department of Biological Systems Engineering , Washington State UniversitySumeet Dhawan - Department of Biological Systems Engineering , Washington State UniversityPreston Andrews - Department of Horticulture and Landscape Architecture , Washington State UniversityShyam S Sablani - Department of Biological Systems Engineering , Washington State University
- Publication Details
- Drying technology, Vol.30(5), pp.484-493
- Academic Unit
- Biological Systems Engineering, Department of; Horticulture, Department of
- Publisher
- Taylor & Francis Group
- Identifiers
- 99900547927001842
- Language
- English
- Resource Type
- Journal article