Antilisterial and Antioxidant Activities of Neutrase-Treated Grass Carp Proteins and their Effects on the Storage and Quality Properties of Fresh Noodle

2016 ◽  
Vol 40 (6) ◽  
pp. 1421-1428 ◽  
Author(s):  
Jianhui Xiao ◽  
Liya Niu
2012 ◽  
Vol 38 (6) ◽  
pp. 1585-1592 ◽  
Author(s):  
Li Weifen ◽  
Zhang Xiaoping ◽  
Song Wenhui ◽  
Deng Bin ◽  
Liang Quan ◽  
...  

2010 ◽  
Vol 28 (No. 6) ◽  
pp. 475-484 ◽  
Author(s):  
J. Ren ◽  
H. Wang ◽  
M. Zhao ◽  
Ch. Cui ◽  
X. Hu

Myofibrillar protein was extracted from grass carp, a freshwater fish, and hydrolysed using five commercial proteases (papain, pancreatin 6.0, bromelain, Neutrase 1.5MG, and Alcalase 2.4 L). The antioxidant activities of the hydrolysates were determined. Pancreatin 6.0 proved to be the most efficient protease for hydrolysing myofibrillar protein with a very high protein recovery (90.20%), its hydrolysates exhibiting the highest hydroxyl radical (&bull;OH) scavenging activity (IC<sub>50</sub> = 349.89 &plusmn; 11.50 &mu;g/ml) out of all five hydrolysates. Molecular weight distribution analysis revealed that pancreatin 6.0 hydrolysate rendered a higher proportion of the 6&minus;10 kDa fraction and a lower proportion of the 3&minus;6 kDa fraction as compared with other hydrolysates. The maximum &bull;OH scavenging activity for pancreatin 6.0 hydrolysate (IC<sub>50</sub> = 229.90 &micro;g/ml) was obtained at the enzyme to substrate ratio of 0.52%, the incubation time of 7.03 h, and the incubation temperature of 50.56&deg;C, as optimised by response surface methodology. In vitro antioxidant experiments proved that pancreatin 6.0 hydrolysates had obvious inhibitory effects on lipid peroxidation and low-density lipoproteins oxidation under optimised conditions.


Author(s):  
Serdal Sabancı ◽  
Filiz Icier

AbstractSour cherry juice (SJ) having total soluble solid (TSS) content of 19.2 % was concentrated to 65 % TSS by applying vacuum ohmic evaporation (VOE) and vacuum evaporation (VE) methods under constant absolute pressure (25 kPa). Total monomeric anthocyanin content (TMAC) of sour cherry concentrate (65 % TSS) was found in the range of 1561.67–1777.38 mg/L whereas total phenolic content (TPC) varied in the range of 9,071.22–78,347.53 mg/L concentrate. TPC and TMAC values of juice concentrates were affected less from VOE process compared to VE (p < 0.05) while there was no significant difference between the total antioxidant activities of SJ concentrates obtained by both methods (p > 0.05). TMAC and TPC values increased as the voltage gradient applied increased (p < 0.05). VOE process preserved the color properties of juice concentrates better compared to the VE process. It was concluded that VOE method could be an alternative fast evaporation method to obtain high-quality fruit juice concentrates.


2012 ◽  
Vol 11 (14) ◽  
pp. 2392-2397 ◽  
Author(s):  
D.Y. Yu ◽  
W.F. Li ◽  
B. Deng ◽  
Z.W. Cui ◽  
L.Q. Fu ◽  
...  

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