Effect of Cation Exchange Resin Treatment on Reduction of Non-Enzymatic Browning of Orange Juice and Semi-concentrates during Storage

2014 ◽  
Vol 4 (1) ◽  
pp. 55
Author(s):  
Shashibala Juyal ◽  
S.K. Sharma
Keyword(s):  
Cation Exchange ◽  
Orange Juice ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Enzymatic Browning ◽  
Resin Treatment

Kinetics of LIS-100 Cation Exchange Resin to Remove Reaction Substrate of Non-Enzymatic Browning in Clarified Apple Juice

2013 ◽  
Vol 699 ◽  
pp. 770-774
Author(s):  
Jian Hua Yi ◽  
Mei Li Li ◽  
Zhen Bao Zhu
Keyword(s):  
Amino Acids ◽  
Cation Exchange ◽  
Apple Juice ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Enzymatic Browning ◽  
Adsorption Parameters ◽  
Cation Exchange Resins ◽  
Exchange Resins ◽  
Dynamic Exchange

In order to inhibit non-enzymatic browning in clarified Fuji apple juice during storage, four kinds of cation exchange resins were compared for their abilities to exchange and remove amino acids, the reaction substrates of non-enzymatic browning in apple juice. The favorite resin, LSI-100, was screened to carry out static and dynamic adsorption experiments. The results showed that LSI-100 cation exchange resin had the best capacity for adsorption and removal amino acids. The equilibrium time of LSI-100 resin for amino acids was 3.5h.And the isotherm of LSI-100 resin could be described by Freundlich at 20°C. Additionally, the flow rates, temperature and concentrations of amino acids in apple juice affected the dynamic kinetic curves of LSI-100 cation exchange resin and the better dynamic exchange and adsorption parameters were as follows: flow rate 4BV/h, temperature 50°C,and amino acid concentration 30mg/100g apple juice.

Gas Chromatographic Determination of Phenolic Amines

1969 ◽  
Vol 52 (5) ◽  
pp. 1044-1047 ◽  
Author(s):  
D E Coffin
Keyword(s):  
Cation Exchange ◽  
Orange Juice ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Chromatographic Determination

Abstract Phenolic amines tyramine, octopamine, synephrine, β-methoxyoctopamine, and β-methoxysynephrine are isolated on a cation exchange resin and quantitatively determined by GLC of their trifluoroacetyl derivatives. Recoveries of 80–85% for tyramine and 90–100% for the four other phenolic amines were obtained for standards and for standards added to orange or apple juices. Phenolic amines were not detected in commercial apple juices. Synephrine was found in all commercial orange juice samples at levels of 12.5 to 23.4 mg/L juice. Another component, apparently a phenolic amine, was found in all orange juices examined.

Gas Chromatographic Determination of Phenolic Amines

1969 ◽  
Vol 52 (5) ◽  
pp. 1044-1047
Author(s):  
D E Coffin
Keyword(s):  
Cation Exchange ◽  
Orange Juice ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Chromatographic Determination

Abstract Phenolic amines tyramine, octopamine, synephrine, β-methoxyoctopamine, and β-methoxysynephrine are isolated on a cation exchange resin and quantitatively determined by GLC of their trifluoroacetyl derivatives. Recoveries of 80–85% for tyramine and 90–100% for the four other phenolic amines were obtained for standards and for standards added to orange or apple juices. Phenolic amines were not detected in commercial apple juices. Synephrine was found in all commercial orange juice samples at levels of 12.5 to 23.4 mg/L juice. Another component, apparently a phenolic amine, was found in all orange juices examined.

Preliminary study of the effect of cation-exchange resin treatment on the aging of tempranillo red wines

LWT ◽  
2021 ◽  
Vol 138 ◽  
pp. 110669
Author(s):  
A.M. Mislata ◽  
M. Puxeu ◽  
E. Nart ◽  
S. de Lamo ◽  
R. Ferrer-Gallego
Keyword(s):  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Red Wines ◽  
Preliminary Study ◽  
Resin Treatment

scholarly journals ROLE OF ELECTROLYTES AND STARVATION IN ALTERING APPARENT RADIOSENSITIVITY OF BAKERS' YEAST

1955 ◽  
Vol 38 (4) ◽  
pp. 493-504 ◽  
Author(s):  
William J. Bair ◽  
J. N. Stannard
Keyword(s):  
Cation Exchange ◽  
Colony Formation ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Complete Inhibition ◽  
Co2 Production ◽  
X Rays ◽  
Marked Inhibition ◽  
Resin Treatment

1. Respiration and fermentation of yeast receiving 90,000 r of 250 kv. x-rays were studied under a variety of conditions. This dose will nearly completely inhibit growth or colony formation. 2. The apparent effects of irradiation are quite dependent on the K+ and H+ of the suspending medium. At pH 4.5 stimulatory effects were observed in KH2PO2 buffer and inhibition in potassium-free (T-S-T) buffer. At pH 6.5 the situation was reversed and the effects were very small (about 10 per cent). Addition of K+ to irradiated yeast in T-S-T buffer at pH 4.5 can completely reverse the inhibition seen. 3. Starving increases the apparent radiosensitivity of respiration and fermentation, probably by depletion of metabolite and/or electrolyte reserves. 4. Treatment with a cation exchange resin (dowex 50) results in marked inhibition of these processes in irradiated yeast, either fresh or starved. This was most effective if given after irradiation. Almost complete inhibition of anaerobic CO2 production occurs with starvation, irradiation, and dowex treatment combined. 5. The effects of starvation and cation exchange resin treatment can be reversed, though not completely, by adding K+ to the medium.

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