Impact of ozone treatment on the physico-chemical properties, bioactive compounds, pectin methylesterase activity and microbiological properties of watermelon juice

Author(s):  
Boon Jen Lee ◽  
Adeline Su Yien Ting ◽  
Yin Yin Thoo
2017 ◽  
Vol 17 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Hossein Ali Asadi-Gharneh ◽  
Marjan Mohammadzamani ◽  
Soheil Karimi

2017 ◽  
Vol 54 (8) ◽  
pp. 2230-2240 ◽  
Author(s):  
Mehmet Musa Özcan ◽  
Fahad Al Juhaimi ◽  
Mehmet Gülcü ◽  
Nurhan Uslu ◽  
Ümit Geçgel ◽  
...  

2019 ◽  
Vol 256 ◽  
pp. 108588 ◽  
Author(s):  
Ireneusz Ochmian ◽  
Jan Oszmiański ◽  
Sabina Lachowicz ◽  
Marcelina Krupa-Małkiewicz

2019 ◽  
Vol 69 (12) ◽  
pp. 3756-3760 ◽  
Author(s):  
Simona Cavalu ◽  
Simona Bisboaca ◽  
Ileana Mariana Mates ◽  
Paula Melania Pasca ◽  
Vasile Laslo ◽  
...  

The aim of our study was to prepare and characterize chitosan-based nanoparticles encapsulating propolis extract by ionotropic gelation and glutaraldehyde cross-linking technique. Both spectroscopic (UV-Vis, FTIR) and microscopic techniques (AFM) were applied for structural characterization of nanoparticles, along with entrapment and release study of propolis extract. The physico-chemical properties and morphological features of the obtained nanoparticles demonstrated a good correlation between all the investigated methods. Moreover, the bioactive compounds were stable upon the encapsulation procedure. Propolis release from the polymeric matrix was monitored in both simulated gastric acid and simulated intestinal fluids, concluding that our proposed formulation is suitable for controlled release. These results may provide a novel design, with improved bioavailability, stability and nutritional value of propolis bioactive compounds during processing and storage, with possible applications in food and nutraceutical industries.


Author(s):  
H. Gross ◽  
H. Moor

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.


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