Drying Kinetics and Shrinkage Analysis of Valeriana Officinalis Roots
Апстракт
Drying kinetics and shrinkage of valerian plant root (Valeriana officinalis) was investigated during the convective hot air dryer with forced convection mode. Whole root without cutting, root cut into quarters, and root cut into 2 mm thin slices were used in drying experiments. Initial moisture content of roots was 51.2 +/- 0.3% and roots were considered to be dry when they lost 68% of the fresh weight and reached the moisture content of 10%. Drying air temperature was set to be 40 and 50 degrees C, air velocity at 1 m/s. The relative humidity of drying air was not controlled and it depended on surroundings. The experimental results were fitted to the five thin layer drying models and according to the non-linear regression analysis Page model was most suitable to describe the drying kinetics. The characteristic drying curves were created for each experimental set and they showed that the samples' preparation strongly influenced the drying process and drying time. Experiments to determi...ne shrinkage of different cell structures of valerian root were carried out for raw material, as well as for dried samples, by using optical and electron microscopy observations and measurements. It was observed that shrinkage processes are significantly dependent of the type of cell tissue and drying air temperature.
Кључне речи:
Valerian roots / microscopy / material shrinkage / drying models / convective dryingИзвор:
FME Transactions, 2017, 45, 1, 142-148Издавач:
- Univerzitet u Beogradu - Mašinski fakultet, Beograd
Финансирање / пројекти:
- Унапређење биотехнолошких поступака у функцији рационалног коришћења енергије, повећања продуктивности и квалитета пољопривредних производа (RS-MESTD-Technological Development (TD or TR)-31051)
DOI: 10.5937/fmet1701142Z
ISSN: 1451-2092
WoS: 000408082100023
Scopus: 2-s2.0-85011357468
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Zlatanović, Ivan AU - Pajić, Miloš B. AU - Rancić, Dragana V. AU - Dajic-Stevanović, Zora AU - Dudić, Dragana C. PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2664 AB - Drying kinetics and shrinkage of valerian plant root (Valeriana officinalis) was investigated during the convective hot air dryer with forced convection mode. Whole root without cutting, root cut into quarters, and root cut into 2 mm thin slices were used in drying experiments. Initial moisture content of roots was 51.2 +/- 0.3% and roots were considered to be dry when they lost 68% of the fresh weight and reached the moisture content of 10%. Drying air temperature was set to be 40 and 50 degrees C, air velocity at 1 m/s. The relative humidity of drying air was not controlled and it depended on surroundings. The experimental results were fitted to the five thin layer drying models and according to the non-linear regression analysis Page model was most suitable to describe the drying kinetics. The characteristic drying curves were created for each experimental set and they showed that the samples' preparation strongly influenced the drying process and drying time. Experiments to determine shrinkage of different cell structures of valerian root were carried out for raw material, as well as for dried samples, by using optical and electron microscopy observations and measurements. It was observed that shrinkage processes are significantly dependent of the type of cell tissue and drying air temperature. PB - Univerzitet u Beogradu - Mašinski fakultet, Beograd T2 - FME Transactions T1 - Drying Kinetics and Shrinkage Analysis of Valeriana Officinalis Roots EP - 148 IS - 1 SP - 142 VL - 45 DO - 10.5937/fmet1701142Z ER -
@article{ author = "Zlatanović, Ivan and Pajić, Miloš B. and Rancić, Dragana V. and Dajic-Stevanović, Zora and Dudić, Dragana C.", year = "2017", abstract = "Drying kinetics and shrinkage of valerian plant root (Valeriana officinalis) was investigated during the convective hot air dryer with forced convection mode. Whole root without cutting, root cut into quarters, and root cut into 2 mm thin slices were used in drying experiments. Initial moisture content of roots was 51.2 +/- 0.3% and roots were considered to be dry when they lost 68% of the fresh weight and reached the moisture content of 10%. Drying air temperature was set to be 40 and 50 degrees C, air velocity at 1 m/s. The relative humidity of drying air was not controlled and it depended on surroundings. The experimental results were fitted to the five thin layer drying models and according to the non-linear regression analysis Page model was most suitable to describe the drying kinetics. The characteristic drying curves were created for each experimental set and they showed that the samples' preparation strongly influenced the drying process and drying time. Experiments to determine shrinkage of different cell structures of valerian root were carried out for raw material, as well as for dried samples, by using optical and electron microscopy observations and measurements. It was observed that shrinkage processes are significantly dependent of the type of cell tissue and drying air temperature.", publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd", journal = "FME Transactions", title = "Drying Kinetics and Shrinkage Analysis of Valeriana Officinalis Roots", pages = "148-142", number = "1", volume = "45", doi = "10.5937/fmet1701142Z" }
Zlatanović, I., Pajić, M. B., Rancić, D. V., Dajic-Stevanović, Z.,& Dudić, D. C.. (2017). Drying Kinetics and Shrinkage Analysis of Valeriana Officinalis Roots. in FME Transactions Univerzitet u Beogradu - Mašinski fakultet, Beograd., 45(1), 142-148. https://doi.org/10.5937/fmet1701142Z
Zlatanović I, Pajić MB, Rancić DV, Dajic-Stevanović Z, Dudić DC. Drying Kinetics and Shrinkage Analysis of Valeriana Officinalis Roots. in FME Transactions. 2017;45(1):142-148. doi:10.5937/fmet1701142Z .
Zlatanović, Ivan, Pajić, Miloš B., Rancić, Dragana V., Dajic-Stevanović, Zora, Dudić, Dragana C., "Drying Kinetics and Shrinkage Analysis of Valeriana Officinalis Roots" in FME Transactions, 45, no. 1 (2017):142-148, https://doi.org/10.5937/fmet1701142Z . .