کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
223792 464402 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
α-Relaxation in honey study versus moisture content: High frequency ultrasonic investigation around room temperature
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
α-Relaxation in honey study versus moisture content: High frequency ultrasonic investigation around room temperature
چکیده انگلیسی

Ultrasonic longitudinal attenuation and velocity have been measured for various frequencies between 0.5 and 13.5 MHz versus temperature, in honeys with moisture contents between 15% and 19%. With the help of attenuation measurements, the temperature of the alpha transition Tα (associated with the glass transition) has been deduced versus moisture content and ultrasonic frequency. Regarding the high sensitivity of Tα towards moisture content, one can distinguish two honeys with moisture contents difference less than 0.1%. Considering the fact that the experiments are not difficult to perform and are carried out at around room temperature, this technique could be useful for honey quality control or more generally for aqueous polymers study.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 103, Issue 2, March 2011, Pages 165–169
نویسندگان
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