Biochemistry & Nutrition

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Browsing Biochemistry & Nutrition by Subject "amino acids"

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    Beverage preparation from fish hydrolysates
    (Society of Fisheries Technologiste (India), 1975) Prabhu, P.V.; Radhakrishnan, A.G.; Arul James, M.
    A method for the preparation of energy food incorporating fish hydrolysates, sugar, cocoa, malt extract etc. is described. The product has good consumer appeal. The preparation does not impart any bitter hydrolysate. It freely mixes with hot or cold milk and the resulting drink is adjudged to be very palatable.
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    Biochemical and microbiological characteristics of salt fermented Hilsa (Tenualosa ilisha)
    (Society of Fisheries Technologists (India), 2005) Majumdar, R.K.; Basu, S.; Anandan, R.
    Lona ilish is a salt fermented product from Hilsa is very popular in Bangladesh and norteastern part of India due to its typical flavour and aroma. Biochemical composition including amino acid profile of both raw hisa fish lona ilish has been studied. A significant variation was observed in amino acid profile of the product as compared to the raw fish. Bacterial flora of the fermented product comprised of Micrococcus and Bacillus species.
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    Biochemical composition of myctophid species diaphus watasei and myctophum obtusirostre caught from Arabian sea
    (Society of Fisheries Technologists (India), 2013) Rajamoorthy, K.; Pradeep, K.; Anandan, R.; Libin, B.; Sankar, T.V.; Lakshmanan, P.T.
    An attempt was made to evaluate the biochemical composition of myctophid fishes Diaphus watasei and Myctophum obtusirostre collected from Arabian Sea (8°30’50"N - 9°07’50"N lat and 75°49’20"E - 75°58’60"E long). The moisture content in D. watasei was significantly lower (63.19 ± 0.47%) compared to M. obtusirostre (71.32%), while fat content was significantly higher in D. watasei (15.13%) compared to M obtusirostre (3.54%). Protein also comprised significant proportions in these myctophids, contributing 21.40% in D. watasei and 22.64% in M. obtusirostre, with substantial amount of essential amino acids. The foremost amino acid was glutamic acid in both the species. Ash content was significantly higher in M. obtusirostre (3.06%) compared to D. watasei (1.33%). The present study indicates that both species contain good quantity of essential amino acids required for human nutrition.
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    Biochemical investigations on Antarctic krill Euphausia superba
    (Society of Fisheries Technologists (India), 2000) Ragunath, M.R.; Sankar, T.V.; Radhakrishnan, A.G.; Mathew, S.; Ammu, K.
    Antarctic krill (Euphausia superba Dana), caught by the first Indian krill expedition was processed on board into whole krill, peeled tail meat and whole krill mince. These were analysed for trace metals, lipids, cholesterol, fatty acids and amino acids. Autolysis at various pH and temperatures as well as thermal coagulation of krill mince suspended in various media were also studied. Trace metals were below toxic levels while no pesticides were detected. Krill tail meat had small amount of lipids and cholesterol (0.81 and 0.033% respectively). The lipids were rich in C18:1, C20:5, C22:6, fatty acids. Autolytic activity at pH 3-4 and 8-10 was predominant in whole krill at 20 and 40 degree C but autolysis in tail meat was very low. Nearly 80% of the soluble proteins in krill suspension could be precipitated by rapid heating.
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    Biochemical profile and nutritional quality of Indian squid, Uroteuthis duvauceli
    (International Journal of Fisheries and Aquatic Studies, 2018) Remyakumari, KR; Ginson, J; Ajeeshkumar, KK; Vishnu, KV; Asha, KK; Suseela, M
    This study was designed to find out the biochemical and nutritional profiling of Indian squid. Proximate composition of Uroteuthis duvauceli showed a content of 80.47% for moisture, 17.5% for protein, 0.52% for fat and 1.13% for ash, respectively. Amino acid analysis showed a higher content of glutamine, followed by aspartine, tryptopan, leucine, alanine and glycine. Higher concentrations of total amino acid (TAA), total essential amino acid (TEAA), total acidic amino acid (TAAA), total neutral amino acid (TNAA), total sulphur amino acid (TSAA) and total aromatic amino acid (TArAA) were observed. In case of fatty acids, saturated fatty acids, palmitic and stearic acid contributed highest quantity; whereas, DHA, EPA and arachidonic acid were the major unsaturated fatty acids in the sample. Among the macro minerals, potassium showed highest content followed by sodium and calcium. As in the case of micro minerals, magnesium content showed highest proportion and copper showed least quantity. Commendable quantities of biochemical and nutritional content in U. duvauceli signify the appropriateness of this moderately exploited resource as an essential nutrients for nutritionally deprived population.
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    Effect of aureomycin on the behaviour of certain free amino acids in oil sardine [sardinella longiceps] held in ice storafge
    (Society of Fisheries Technologists(India),Cochin, 1964) Jacob, S.; Karthiayani, T.C.; Nair, M.R.
    The course of development of a few free amino acids under the influence of aureomycin in oil sardine (Sardinell longiceps) held in ice storage was investigated. The levels of lcucine(s) and valine regularly increased in the control and aureomycin treated fish throughout the storage period. Almine(s) and Theorine showed similar trend in both control and fish treated with 20 ppm aureomycin. These amino acids however showed a gradual fall in fish treated at 50 ppm level. The changes in tyrosine + tryptophane were found to be irregular. Most of the amino acids studied indicated a remarkable change in trend by about the 16th day of ice storage in the case of fish treated with 50 ppm aureomycin.
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    Technological aspects of preservation and processing of edible shell fishes - II - Influence of season on chemical composition of crab [Scylla serrata]
    (Society of Fisheries Technologists (India), 1971) George, C.; James, M.A.
    Fully-grown live female crabs from the same fishing ground and of similar size (12 +or- 1 cm long) were collected at new and full moon every month for 2 yr. They were dissected and the meat analysed for moisture, protein, water-extractable N, non-protein N, glycogen, lactic acid, fat, and free amino acids. Nutritive value was max. in Oct.-March; highest meat yields (30-35%) occurred in Sept.-Dec. (of. 15-30% for other months); there was evidence that yield was greater at new than at full moon. Max. moisture (83.1%) and min. protein (14.0%) occurred in May, and min. moisture (about 74%) and max. protein (>23%) occurred in April and Dec., respectively. Water-extractable N was max. in Oct.-Jan. and min. in May-June for both full and new moons. Non-protein N was max. in Nov.-March and min. in Aug. at full moon, and max. in Jan.-March and min. in May-Oct. at new moon. Glycogen showed wide variation over the year: at new moon, min. (0.45%) in Oct. and max. (2.05%) in Feb.; at full moon, min. (0.20%) in June and max. (2.9%) in Jan. At new moon, lactic acid increased from 90 mg% in May to 520 mg% in Aug., then decreased to 200 mg% in Jan., followed by increase to 535 mg% in March. A distinct pattern was not found at full moon, but values were min. in Jan. and July and max. in Sept. and Nov. Fat was max. in Sept. and min. in Jan.-Feb. at full moon, and max. in March and min. in Jan. at new moon. Seasonal changes in individual amino acids are tabulated; glycine was the most abundant. [See FSTA (1974) 06 04R0243for part I.]