FT Vol.52(4)

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Browsing FT Vol.52(4) by Author "Anandan, R."

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    Protective Effects of Echinorhinus brucus Liver Oil against Induced Inflammation and Ulceration in Rats
    (Central Institute of Fisheries Technology, Cochin, India, 2015) Vishnu, K.V.; Ajeeshkumar, K.K.; Asha, K.K.; Remyakumari, K.R.; Ganesan, B.; Anandan, R.; Chatterjee, N.S.; Suseela Mathew
    Anti-inflammatory and anti-ulcer activities of Bramble shark (Echinorhinus brucus) liver oil were examined in rats. The oil showed significant proportion of n-3 polyunsaturated fatty acids (PUFAs), the percentages of EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) being 16 and 18% respectively. The study also revealed that liver oil had a very favourable n3:n6 ratio of 4.7. Oral administration of shark liver oil at 1g kg-1 concentration significantly attenuated the formalin-induced paw edema in experimental rats. It exerted potent anti-ulcer effect against acid-ethanol mixturemediated lesion formation in the rat gastric mucosa.
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    Supercritical Carbon Dioxide Extraction of PUFA Rich Oil from Freeze Dried Tuna Red Meat
    (Central Institute of Fisheries Technology, Cochin, India, 2015) Yathavamoorthi, R.; Nithin, C.T.; Ananthanarayanan, T.R.; Suseela Mathew; Bindu, J.; Anandan, R.; Sreenivasagopal, T. K.
    Supercritical fluid extraction (SFE) is an emerging technology for extraction and isolation of valuable compounds from natural products. Supercritical carbon dioxide (SCO2 ) is one of the most commonly used solvents in SFE and has gained importance as a “green” or environment friendly solvent. In this study, polyunsaturated fatty acid (PUFA) rich oil from freeze dried yellowfin tuna (Thunnus albacares) red meat was extracted using supercritical carbon dioxide. Red meat, a by-product obtained from tuna processing forms about 9-11% of the total body weight of tuna. Lipid extraction from freeze dried tuna meat was performed at a temperature of 60oC and pressure of 35 MPa for 3 h. The flow rate of CO2 was kept constant at 175 l h-1. The extracted oil was collected in two separators both held at 5 MPa pressure and temperature of 50oC and 40oC respectively. The antioxidant tocopherol (0.5%) was added to the extracted oil and stored at 2-4oC for further analysis. The yield of oil obtained was 5% and it was found to be rich in polyunsaturated fatty acids like docosahexaenoic, eicosapentaenoic and arachidonic acid constituting 31, 5 and 4% of the total fatty acids respectively. Palmitic and stearic acid were the most abundant saturated fatty acids present constituting 23 and 15% of total fatty acids respectively. Oleic acid contributed 18% of the total fatty acids. SFE was effective in extraction of fatty acids from tuna red meat with minimal losses.