Rheological Properties, Water-Holding and Oil-Binding Capacities of Particulate β-Glucans Isolated from Spent Brewer’s Yeast by Three Different Procedures
Particulate β-glucans were isolated from brewer’s yeast using three different procedures – alkaline (A), alkaline-acidic (AA) and alkaline-acidic with mannoprotein removal (AAM) and dried using three different methods – air drying (AD), lyophilization (L) and spray drying (SD). In this work, the obt...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Zagreb Faculty of Food Technology and Biotechnology
2011-01-01
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| Series: | Food Technology and Biotechnology |
| Subjects: | |
| Online Access: | http://hrcak.srce.hr/file/98164 |
| Summary: | Particulate β-glucans were isolated from brewer’s yeast using three different procedures – alkaline (A), alkaline-acidic (AA) and alkaline-acidic with mannoprotein removal (AAM) and dried using three different methods – air drying (AD), lyophilization (L) and spray drying (SD). In this work, the obtained β-glucan preparations were tested for their microstructure, rheological properties, swelling, water-holding and oil-binding capacities. According to their rheological properties, suspensions containing 1 and 2 % (by mass) of spray-dried samples belong to the category of dilatant fluids. Among the spray-dried samples, rheological behaviour and water-holding capacity of the preparation AA-SD differed from those obtained by other two procedures (A-SD and AAM-SD). Concerning different drying methods applied, swelling was the lowest in the lyophilized samples and the most pronounced in the air-dried ones. Oil-binding capacity was the highest in the lyophilized preparations and increased proportionally to the number of processing steps applied in the isolation procedure. |
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| ISSN: | 1330-9862 1334-2606 |