Effect of Temperature and Cultivar on Polyphenol Retention and Mass Transfer during Osmotic Dehydration of Apples

2010 ◽  
Vol 58 (1) ◽  
pp. 606-614 ◽  
Author(s):  
Emilie Devic ◽  
Sylvain Guyot ◽  
Jean-Dominique Daudin ◽  
Catherine Bonazzi
2020 ◽  
Vol 10 (18) ◽  
pp. 6225
Author(s):  
Efimia Dermesonlouoglou ◽  
Eleni Paraskevopoulou ◽  
Varvara Andreou ◽  
Petros Taoukis

The quality and preservability of fresh-cut fruits can be improved by osmotic dehydration (OD). In this study, the impact of Strained Yoghurt Whey (SY Whey) (along with other osmotic solutes) on mass transfer kinetics (water loss, solid gain, water activity decrease), quality attributes (color, texture, sensory characteristics, vitamin C), and microbial stability during OD and subsequent refrigerated storage (5–15 °C) of OD-processed pumpkin cuts was studied. The effect of temperature (35–55 °C), time (10–240 min), and type of osmotic solvent was evaluated to select the optimal processing conditions (55 °C–120 min; WL: 9-99-10.86 g w./g i.d.m. SG: 1.47–1.79 g s./g i.d.m., aw: 0.89). The use of SY Whey vs. water as solvent enhanced the mass transfer phenomena increasing the solids uptake diffusion coefficient by 20%. Water and whey osmosed samples were of similar quality (32–38% increase of hardness, total sensory quality score: 7.9–8.2/9.0, vitamin C content: 77–81 mg/100 g). At all studied storage temperatures, ODSY Whey samples presented lower quality degradation rates compared to the respective ODWater samples (e.g., almost half for hardness change). The shelf life of both OD processed pumpkin cuts exceeded 90 days at 5–15 °C (no microbial growth) supporting the applicability of SY whey as novel osmotic solvent.


2011 ◽  
Vol 27 (4) ◽  
pp. 331-356 ◽  
Author(s):  
Hilaire Nahimana ◽  
Min Zhang ◽  
Arun S. Mujumdar ◽  
Zhansheng Ding

2010 ◽  
Vol 45 (11) ◽  
pp. 2281-2289 ◽  
Author(s):  
Giovana D. Mercali ◽  
Isabel C. Tessaro ◽  
Caciano P. Z. Noreña ◽  
Lígia D. F. Marczak

2019 ◽  
Vol 273 ◽  
pp. 408-413 ◽  
Author(s):  
Mariana Schincariol Paes ◽  
João Pedro Ferreira Del Pintor ◽  
Pedro de Alcântara Pessoa Filho ◽  
Carmen Cecília Tadini

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