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Articles by D. Sukumar
Total Records ( 2 ) for D. Sukumar
  G. Jeyasekaran , P. Ganesan , R. Anandaraj , R. Jeya Shakila and D. Sukumar
  Effect of pre-chilling on the sensory, microbiological and biochemical quality of silver pomfret (Pampus argenteus) stored in a standardized combination of dry ice and wet ice at the ratio of 1:0.2:0.5 (wt/wt/wt) was studied. Silver pomfret were chilled in ice till their core temperature reached to 0°C before their storage in the combination of dry ice and wet ice. The pre-chilled fish stored in the combination were sensorially acceptable up to 27 h without ricing, whereas the fish was acceptable only up to 18 h when they were stored without pre-chilling. Total bacterial count, psychrophilic count, H2S producers and lactics count was 107, 106, 105 and 103 cfu g-1, respectively at the end of storage period in the pre-chilled fish. Moraxella constituted 50% of the total bacterial flora in raw pomfret and became 2%, when they were pre-chilled with ice. Moraxella was also found to be the dominant (29%) flora in pre-chilled stored pomfret, whereas Flavobacterium was dominant in control pack. TMA-N and TVB-N did not exceed the limit of acceptability. Hypoxanthine (Hx) and Free Fatty Acids (FFA) content were 7.94 mg/100 g and 19.84% as oleic acid, respectively at the end of the storage period.
  K.S. Vidyalakshmi , A.I. Charles Dorni , Hannah R. Vasanthi , G.V. Rajamanickam and D. Sukumar
  The flowers of Mussaenda glabra occurring in white and pink have been evaluated for their anti oxidant property. The white (MGW) and the pink (MGP) varieties showed considerable NO scavenging activity. The IC50 values were found to be 92.79 and 122.45 μg mL-1, respectively. MGW inhibited lipid peroxidation to a greater extent when compared to MGP. MGW showed 50% inhibition at the concentration of 112.4 μg mL-1 while MGP at 53.42 μg mL-1. The reducing power was found in a dose dependent manner. The pink variety showed greater reducing power when compared to white variety. Both the extracts showed hydroxyl radical and ABTS radical scavenging property. The total phenolic content was 17.5 and 8.3 mg g-1 in MGP and MGW, respectively. The HPTLC fingerprinting showed peaks due to flavonoids. The results show that both are having considerable anti oxidant property. The abundance of this flower throughout the year can be used for evaluating its medicinal value.
 
 
 
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