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Effect of Drying Methods on Quality
Characteristics of
Rosa xanthina
Lindl Powder
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ZHANG Wen-qin, WANG Xiao-yan*, SONG Gao-lin
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(Shanxi
Institute of Medicine and Life Sciences, Taiyuan 030006, China)
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Abstract
The drying technology of hot air drying, vacuum freeze
drying and spray drying were used to prepare Rosa xanthina Lindl powder. The effects of
different drying methods on the physicochemical properties and effective
components of the powder were investigated. The results showed that
the powder obtained from three kinds of drying methods were good in water
solubility and low in moisture content. The flowability, moisture absorption
and CRH of the powder prepared by hot air drying were better than others drying
methods, but the color of this powder was brown and the active ingredient of
anthocyanin was not detected. The powder prepared by spray drying had the
lowest yield 77.51%, meanwhile, the powder had bright purple color, the best
water solubility, the smallest particle size 7.71 μm, and the content of
anthocyanins, polyphenols and flavonoids was the highest than others drying
methods. Based on the results of comprehensive scoring, the quality of Rosa xanthina Lindl powder by spray
drying was the best. Considering the quality of the powder and the efficiency
and cost of drying methods, spray drying method was selected as the most
suitable method, which showed potential application in Rosa xanthina Lindl powder processing industry.
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Keywords
Rosa xanthina Lindl Powder
hot air drying
spray drying
vacuum freeze drying
quality characteristics
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URL: |
http://sf1970.cnif.cn/EN/10.13995/j.cnki.11-1802/ts.015595 OR http://sf1970.cnif.cn/EN/Y0/V/I/1 |
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