VISCOSITY AND PARTICLE SIZE DISTRIBUTION OF CONCENTRATED APPLE JUICE PRODUCED BY SPINNING DISC REACTOR (SDR)

VISCOSITY AND PARTICLE SIZE DISTRIBUTION OF CONCENTRATED APPLE JUICE PRODUCED BY SPINNING DISC REACTOR (SDR)

concentrated apple juice; viscosity; particle size distribution; SDR-technology

This research  explored the potential use of the spinning disc reactor (SDR), a novel processing technique used for the production of concentrated apple juice. The apple juice was passed over the SDR disc spinning at 2000 rpm, heated at various temperatures (90 °C, 100 °C, 110 °C, and 120 °C), and at a flow rate of 7 ml/s. The effect of SDR-processing on viscosity and particle size of the apple juice concentration,  was investigated. The SDR-concentrated apple juice exhibits narrow particle size distribution (average particle size in the range of d32 = 0.1-0.2 µm and d43 = 4-12 µm) and shear-thinning behaviour in the range of shear rates from 0.1 – 200 s-1, in which the viscosity decreases with increasing the shear rate. The reconstituted samples show  similar viscosity with its original counterpart.  The increase of the processing temperature allows a reduction in the processing time. The results reveal that the SDR is capable of producing the concentrated apple juice. 

Safriani, Novi

Jurnal Teknologi dan Industri Pertanian Indonesia; Vol 4, No 2 (2012): May - August 2012

2442-7020

2085-4927

Agricultural Faculty

2012-06-15

http://jurnal.unsyiah.ac.id/TIPI/article/view/269/255

application/pdf

eng

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

Peer-reviewed Article

http://jurnal.unsyiah.ac.id/TIPI/article/view/269

10.17969/jtipi.v4i2.269