Discover the SciOpen Platform and Achieve Your Research Goals with Ease.
Search articles, authors, keywords, DOl and etc.
In this study, using mixed solutions of sucrose (SUC) and fructo-oligosaccharides (FOS), isomaltooligosaccharides (IMO), or xylo-oligosaccharides (XOS) as the medium, pulsed ultrasound (US)-assisted osmotic dehydration (OD) of kiwifruit chunks was carried out. Changes in the properties of mixed sugar solutions were systematically analyzed during the dehydration process, the quality formation of kiwifruit chunks was examined, and the process of mass transfer during OD was evaluated from a multidimensional perspective. Results showed that US accelerated the mass transfer. Specifically, the content of total soluble solids (TSS), osmotic pressure and conductivity of the mixed sugar solutions significantly decreased and the turbidity increased. US-SUC-XOS group showed the highest TSS content (23.65 °Brix), osmotic pressure (1439.00 mOsm/L), conductivity (13316.87 μS/cm) and turbidity (12.50 NTU). During the OD process, the TSS content and osmotic pressure of the mixed sugar solutions decreased, the turbidity increased, and the conductivity decreased first and then increased, indicating that mass transfer took place. Analysis of the quality changes of kiwifruit chunks demonstrated that the TSS content continued to increase. The highest TSS content (15.35 °Brix) was observed in the 12 h US-SUC-XOS group. Additionally, the infiltration of sugars could support cells, resulting in obvious plasmolysis, which in turn contributed to decreased texture properties. Analysis of electrical characteristics demonstrated that US-assisted OD facilitated the movement of charged particles, which was reflected in a decrease in the impedance and reactance values of kiwifruit chunks. Notably, in the US-SUC-XOS group, the adhesion effect slowed down the particle movement, leading to the highest impedance and reactance values. X-ray spectroscopy analysis confirmed the mass transfer of elements. The highest proportion of K (67.08%) and the lowest proportion of Ca (28.61%) were obtained in the 12 h US-SUC-XOS group. Additionally, 1H nuclear magnetic resonance (NMR) spectroscopy confirmed the mass transfer of sugar molecules between the mixed sugar solution and kiwifruit chunks. The moisture distribution results highlighted that the infiltration of sugar molecules could induce a large amount of free water to escape from kiwifruit chunks and reduce the mobility of water molecules. The 12 h US-SUC-XOS group showed the lowest peak area of free water and the highest peak area of immobile water and bound water. In summary, different mixed sugar solutions mediate different degrees of mass transfer. In particular, SUC-XOS solution can retard the degradation of kiwifruit tissues, in turn contributing to the formation of good quality in kiwifruit chunks.
FERNANDES F A N, GALLÃO M I, RODRIGUES S. Effect of osmotic dehydration and ultrasound pre-treatment on cell structure: melon dehydration[J]. LWT-Food Science and Technology, 2008, 41(4): 604-610. DOI:10.1016/j.lwt.2007.05.007.
NOWACKA M, TYLEWICZ U, ROMANI S, et al. Influence of ultrasound-assisted osmotic dehydration on the main quality parameters of kiwifruit[J]. Innovative Food Science & Emerging Technologies, 2017, 41: 71-78. DOI:10.1016/j.ifset.2017.02.002.
LYU J, YI J Y, BI J F, et al. Effect of sucrose concentration of osmotic dehydration pretreatment on drying characteristics and texture of peach chips dried by infrared drying coupled with explosion puffing drying[J]. Drying Technology, 2017, 35(15): 1887-1896. DOI:10.1080/07373937.2017.1286670.
HUANG Y W, ZHANG M, JU R H, et al. Effect of ultrasound assisted vacuum osmotic dehydration on the mass transfer kinetics and qualities of orange slices[J]. Drying Technology, 2023, 41(10): 1636-1650. DOI:10.1080/07373937.2023.2168279.
LAZOU A E, DERMESONLOUOGLOU E K, GIANNAKOUROU M C. Modeling and evaluation of the osmotic pretreatment of tomatoes (S. lycopersicum) with alternative sweeteners for the production of candied products[J]. Food and Bioprocess Technology, 2020, 13(6): 948-961. DOI:10.1007/s11947-020-02456-3.
WANG F Z, LYU J, XIE J, et al. Texture formation of dehydrated yellow peach slices pretreated by osmotic dehydration with different sugars via cell wall pectin polymers modification[J]. Food Hydrocolloids, 2023, 134: 108080. DOI:10.1016/j.foodhyd.2022.108080.
MATUSEK A, CZUKOR B, MERÉSZ P. Comparison of sucrose and fructo-oligosaccharides as osmotic agents in apple[J]. Innovative Food Science & Emerging Technologies, 2008, 9(3): 365-373. DOI:10.1016/j.ifset.2007.10.003.
RASTOGI N K, NGUYEN L T, BALASUBRAMANIAM V M. Effect of pretreatments on carrot texture after thermal and pressure-assisted thermal processing[J]. Journal of Food Engineering, 2008, 88(4): 541-547. DOI:10.1016/j.jfoodeng.2008.03.016.
WANG J, WANG J, VANGA S K, et al. High-intensity ultrasound processing of kiwifruit juice: effects on the microstructure, pectin, carbohydrates and rheological properties[J]. Food Chemistry, 2020, 313: 126121. DOI:10.1016/j.foodchem.2019.126121.
XU F F, JIN X, ZHANG L, et al. Investigation on water status and distribution in broccoli and the effects of drying on water status using NMR and MRI methods[J]. Food Research International, 2017, 96: 191-197. DOI:10.1016/j.foodres.2017.03.041.
SHARMA M, DASH K K. Effect of ultrasonic vacuum pretreatment on mass transfer kinetics during osmotic dehydration of black jamun fruit[J]. Ultrasonics Sonochemistry, 2019, 58: 104693. DOI:10.1016/j.ultsonch.2019.104693.
SILVA E K, ARRUDA H S, MEKALA S, et al. Xylooligosaccharides and their chemical stability under high-pressure processing combined with heat treatment[J]. Food Hydrocolloids, 2022, 124: 107167. DOI:10.1016/j.foodhyd.2021.107167.
RAIM V, SREBNIK S. Simulation of osmotic pressure across an amorphous semipermeable membrane[J]. Journal of Membrane Science, 2018, 563: 183-190. DOI:10.1016/j.memsci.2018.05.058.
MORENO J, SIMPSON R, PIZARRO N, et al. Effect of ohmic heating and vacuum impregnation on the quality and microbial stability of osmotically dehydrated strawberries (cv. Camarosa)[J]. Journal of Food Engineering, 2012, 110(2): 310-316. DOI:10.1016/j.jfoodeng.2011.03.005.
LI L, YU Y Y, XU Y J, et al. Effect of ultrasound-assisted osmotic dehydration pretreatment on the drying characteristics and quality properties of Sanhua plum (Prunus salicina L.)[J]. LWT-Food Science and Technology, 2021, 138: 110653. DOI:10.1016/j.lwt.2020.110653.
NOWACKA M, WIKTOR A, ŚLEDŹ M, et al. Drying of ultrasound pretreated apple and its selected physical properties[J]. Journal of Food Engineering, 2012, 113(3): 427-433. DOI:10.1016/j.jfoodeng.2012.06.013.
CHENG X F, ZHANG M, ADHIKARI B, et al. Effect of power ultrasound and pulsed vacuum treatments on the dehydration kinetics, distribution, and status of water in osmotically dehydrated strawberry: a combined NMR and DSC study[J]. Food and Bioprocess Technology, 2014, 7(10): 2782-2792. DOI:10.1007/s11947-014-1355-1.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).