Effect of Pulsed Electric Fields on Yield and Chemical Composition of Rose Oil (Rosa damascena Mill.)

被引:10
|
作者
Tintchev, Filip [1 ]
Dobreva, Ana [2 ]
Schulz, Hartwig [3 ]
Toepfl, Stefan [1 ]
机构
[1] German Inst Food Technol, D-49610 Quakenbruck, Germany
[2] Inst Roses & Aromat Plants, Kazanluk 6100, Bulgaria
[3] Fed Res Ctr Cultivated Plants, Julius Kuhn Inst, Inst Ecol Chem Plant Anal & Stored Prod Protect, D-06484 Quedlinburg, Germany
关键词
Rosa damascena Mill; pulsed electric fields; essential oil; DISTILLATION; QUALITY;
D O I
10.1080/0972060X.2012.10662589
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
To improve the comparatively low oil yield, pulsed electric fields have been applied on fresh rose blossoms with an energy input of 10 kJ/kg as well as 20 kJ/kg. It was reported a rise in yield of 2-46 %, additionally the distillation time could be reduced. An increase of ratio terpene alcohols/hydrocarbones from 33 % to 285 % was observed in treated rose oil. To elucidate the influence on petal structure, scanning electron microscopy was used. The determination of yield increase, chemical composition and olfactory evaluation showed that a pulsed electric fields treatment at 10 kJ/kg was optimal with regard to product yield and quality.
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页码:876 / 884
页数:9
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