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Determination of ammonia, nitrate and nitrite concentrations in marine water samples with cultured marine ornamental fish water sample analysis

100%

Manikandarajan T. , Ramamoorthy K. , Shanmugasundaram S. , Eswar A. , Kathirvel K. , Sankar G.

International Letters of Natural Sciences

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2015

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tom 42

EN

The present studies were concentration of ammonia, nitrite, nitrate, dissolved oxygen, temperature, salinity and pH. For seven physicochemical parameters were determined in marine water samples along with marine ornamental fish water sources from CAS in marine biology laboratory conditions at Parangipettai. Water sample have been studied at a marine water sources. The study concentrations of parameters like ammonia, nitrite, nitrate, dissolved oxygen, temperature, salinity, and pH. And physicochemical parameters have been calculated. The data showed the difference of the investigated parameters in samples as follows; Concentration of water quality parameters like ammonia was maximum level above 1.158 μmol¯1, nitrite was ranging from 0.811 to 0.922 μmol¯1, nitrate was range maximum level above 4.84 μmol¯1, dissolved oxygen content was maximum level above 2.4 mg¯1, temperature was ranging from 32.3 to 100 °C, salinity values ranging from 0 to 36ppt and pH was ranging from 6.5 to 8.0. During the study period of from July 2013 to June 2014 we investigated concentration of seven physicochemical parameters value Marine water samples with cultured fish species in presence of water from CAS in Marine Biology laboratory Annamalai University at Parangipettai.

2

Proximate composition and fatty acid analysis of puffer fish, Lagocephalus inermis (Temminck and Schlegel, 1850) and Lagocephalus lunaris (Bloch and Schneider, 1801) from Parangipettai, Southeast coast of India

100%

Eswar A. , Kathirvel K. , Anbarasu R. , Ramamoorthy K. , Sankar G. , Suvitha S. , Manikandarajan T.

International Letters of Natural Sciences

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2014

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tom 12

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nr 1

EN

The nutritional effects of marine food have increased far and wide due to the beneficial effects of consuming marine food, fats and oils. In general, the proximate composition is well known as a proportion composition of basic elements such as protein, lipids, carbohydrate, minerals and water. The puffer fish Lagocephalus lunaris and Lagocephalus inermis were collected at Mudasal odai fish landing centre and the skin and visceral organs like gonads and intestines were removed the edible portion only took for the analysis. Species of the fish sample was oven-dried in an electric oven at between 70 – 80 °C until the samples had constant weight. The protein, carbohydrate, fat, ash and moisture content of green -rough-back puffer fish and smooth-backed blow fish were investigated. L. lunaris and L. inermis were has 9.22 %, 8.92 %, 1.96 %, 1.87 %, 11.25 %, 11.98 %, 80.32 %, 86.05 %, 0.96 %, 1.27 % respectively. Totally seven saturated fatty acids; ten Mono unsaturated fatty acids and two poly unsaturated fatty acids were found as the major components on the investigated puffer fish. Polyunsaturated fatty acid like n-3 has 31.17 %, 31.19 and n-6 7.26 %, 7.29 % of PUSFA found as the dominant composition on puffer fish. This study revealed that these species are having high saturated fatty acid and protein content and able to compete with more commercially utilize species in terms of nutritional value, and they can definitely also compete when it comes to taste. It can act as a good source of nutritional and economic value when it is carefully handled and properly cooked.

3

Development of calcium titanium oxide coated silicon solar cells for enhanced voltage generation capacity

100%

Kathirvel K. , Rajasekar R. , Shanmuharajan T. , Pal S. K. , Kumar P. S. , Kumar J. S.

Materials Science Poland

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2017

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tom Vol. 35, No. 1

181--187

EN

Depletion of fossil fuel based energy sources drive the present scenario towards development of solar based alternative energy. Polycrystalline silicon solar cells are preferred due to low cost and abundant availability. However, the power conversion efficiency of polycrystalline silicon is lesser compared to monocrystalline one. The present study aims at analyzing the effect of calcium titanium oxide (CaTiO3) antireflection (AR) coating on the power conversion of polycrystalline solar cells. CaTiO3 offers unique characteristics, such as non-radioactive and non-magnetic orthorhombic biaxial structure with bulk density of 3.91 g/cm3. CaTiO3 film deposition on the solar cell substrate has been carried out using Radio Frequency (RF) magnetron sputter coating technique under varying time durations (10 min to 45 min). Morphological studies proved the formation of CaTiO3 layer and respective elemental percentages on the coated substrate. Open circuit voltage studies were conducted on bare and coated silicon solar substrates under open and controlled atmospheric conditions. CaTiO3 coated on a solar cell substrate in a deposition time of 30 min showed 8.76 % improvement in the cell voltage compared to the bare solar cell.

4

Proximate, fatty acid and mineral composition of orange-spotted grouper Epinephelus coioides from Parangipettai coast

100%

Anbarasu R. , Sankar G. , Manikandarajan T. , Kathirvel K. , Suvitha S. , Ramamoorthy K.

International Letters of Natural Sciences

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2015

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tom 39

EN

The marine fish are extraordinarily nourishing food and are affluently accessible fish meat source. Fresh examined sample of grouper fish was collected from Mudasal odai fish landing center. The protein, carbohydrate, lipid, ash and moisture contents of Epinephelus coioides were found to be 19.07 mg, 4.03, 2.61, 77.38 mg and 1.21 mg/g respectively. The potassium and phosphorus are the predominant elements other nine components are present in considerable quantities in the total of 11 minerals. Palmitic acid, Oleic acid and Stearic acid were observed to be the major elements of total presented 15 fatty acids. In this current study we have concluded the grouper fish having rich source of protein and good fatty acids and it will facilitate to enhance the nutrition level on poor folks.

5

Recipes from yellow clam Meretrix casta (Chemnitz)

84%

Srilatha G. , Eswar A. , Manikandarajan T. , Ramamoorthy K. , Sankar G. , Suvitha S. , Anbarasu R. , Kathirvel K.

International Letters of Natural Sciences

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2014

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tom 19

EN

Seafood is an excellent provider of protein with high biological values. Fish, shellfish and other aquatic organisms are appropriate for food and have world-wide importance. They‟re wonderful sources of high quality proteins, superior to those in red meat and poultry foods. The human dietary amendments that characterize the “nutrition transition” include every quantitative and qualitative change in the human diets. The present study Meretrix casta meat is used for the preparation of excellent recipes like cake, soup and mint stuffed tomato with yellow clam using M. casta meat, that have the potential to be become a regular food item in the house hold diet with consumer acceptance. The differences in food habits over the length and breadth of the nation are most that available food resources are not being used properly due to the lack of information regarding their importance. The panel of judges vouched safe for taste and delicacy of the dishes in the present study. The panel detected that the dishes were a lot of as good as those created out of the much sought after seafood in taste, smell and flavor