Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Fisheries and Aquatic Sciences
Journal Basic Information
Journal DOI :
The Korean Society of Fisheries and Aquatic Science
Editor in Chief :
Volume & Issues
Volume 10, Issue 4 - Dec 1977
Volume 10, Issue 3 - Sep 1977
Volume 10, Issue 2 - Jun 1977
Volume 10, Issue 1 - Mar 1977
Selecting the target year
CONDITIONS FOR ALASKA POLLACK AND FILE FISH SKIN GLUE PROCESSING AND THE QUALITY OF PRODUCT
LEE Eung-Ho ; HA Jin-Whan ; HEO Woo-Deock ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 1~9
The purpose of this study is to complish a method of fish glue malting with residual products such as fish head and skin discarded from sea food processing. Using the skins of Alaska pollack and file fish from fillet packers, the optimum conditions of skin glue processing were investigated and physical and chemical properties of the product were also determined. The yields of Alaska pollack, Thelagra calcogramma, skin and file fish, Novodon modestus, skin to the total body weight were
respectively. The optimum conditions for a
n yield Alaska pollack skin glue processing were considered the extraction of previously tinted in
calcium hydroxide solution for 3 hours with the additional water as much as 3 times of sample weight at
for 3 hours under the controlled pH 5.0. The conditions for file fish skin glue were similar to those of Alaska pollack except the addition of five times of water to the weight of sample skin needed for extraction. The content of crude protein of Alaska pollack and file fish skin glue were
respectively. The contents of crude ash and crude lipid were not different from that of chemical grade gelatin. Relative viscosity, melting point, gelation temperature and jelly strength of Alaska pollack skin glue marked 5.84,
respectively and those of file fish skin glue showed
respectively.The color and turbidity of Alaska pollack skin glue are slightly superior to those of file fish skin glue. It is supposed that the extract residue of skin glue is valuable for use the animal feeds by the results of amino acid composition. And the ratio of each amino acid content to the total amino acid of Alaska pollack and file fish skin glue is similar to that of chemical grade gelatin.
INHIBITION OF BROWNING REACTIONS OCCURRING IN THE STORAGE OF DRIED OYSTER 1. Inhibitors and Treating Conditions
LEE Kang-Ho ; CHOI Jin-Ho ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 11~15
Brownish discoloration develops very rapidly in the storage of dried oyster. This undesirable browning is mainly caused by the series of reactions of sugar-amino condensation, enzymatic oxidation of tyrosine and/or the oxidative rancidity of lipids in the tissue of oyster. Sulfites are commonly used as inhibitors for Maillard type browning reactions in agricultural products. The inhibitory effect of sulfite treatment on canned oysters was also confirmed in some investigations. The results suggested that sulfites not only work on blocking tile amadori rearrangement but also on the reduction of free tyrosine which retards the progress of enzymatic oxidation of tyrosine tyrosinase. In this paper, the effect of sodium sulfite treatment on the reduction of reducing sugar and free tyrosine as a function i)f browning inhibition in oyster was tested and other treatment with glucose-oxidase and yeast were also applied. In preparation of samples, fresh oysters were soaked in sodium sulfite solution by various concentration for different treating times, washed in running water to remove the sulfite residue, and finally dried in the shade. In the result, the treatment of sodium sulfite was certainly effective on the reduction of both free tyrosine and reducing sugars in fresh oyster. The best results were obtained by the treatment of 0.5M sodium sulfite solution for 60 minutes each for soaking and washing. Treatment with, glucose-oxidase and yeast solutions, however, did appear somewhat effective but it required so much time for a certain effect that it seemed not practically applicable.
INHIBITION OF BROWNING REACTIONS OCCURRING IN THE STORAGE OF DRIED OYSTER 2. Inhibitory Effect of Sodium Sulfite Treatment and the Addition of Antioxidants
CHOI Jin-Ho ; LEE Kang-Ho ; KIM Mu-Nam ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 17~22
In the present paper, the effect of sodium sulfite treatment on tile inhibition of browning reactions occurring in the storage of dried oyster was tested and the supplementary effect of antioxidantsaddedwasalsomentioned. Dried oysters treated with sodium sulfite solutions as described in the previous paper(Lee and Choi, 1977) were stored in the bottles with silica gel bags at room temperature with or without the application of antioxidants. The ethanol solution of an antioxidant mixture(BHA, BHT, plus, synergists) was sprayed on the surface of cooked oyster before drying. The density of brown pigment was determined spectrophotometrically by measuring the absorbance at 420 and 440 nm of both fractions of pigment extract, namely chloroform-methanol and water soluble fractions, which represent the brown color developed by fat oxidation and Maillard reactions respectively. TBA value was also measured for the oxidative rancidity in oysters during the storage. It appeared from the results that the 0.5 M sodium sulfite-60minute treated samples showed better effect after 150 day storage at room temperature. Controlling tile pH of treating solutions, did not reveal so much different in inhibitory effect in the aspect of color but a more reduction of tyrosine and reducing sugar was resulted with acidic solution than with alkaline solution. The development of brown color in dried oyster seemed to be leaded rather by the oxidative rancidity of lipids than sugar-amino reactions particularly in a long-term storage since the browning of chloroform-methanol fraction progressed more rapidly than of water. soluble fraction. The application of antioxidant, therefore, could largely retard the browning of the product as appeared in the results that sodium sulfite treated oyster with addition of antioxidant kept the best color during the storage.
A STUDY ON DISTRIBUTION OF PSYCHROTROPHIC COLIFORMS AND GENERAL MICROFLORA OF FROZEN FISH FOR EXPORT
SHIN Suk U ; KIM Woo Jun ; KANG Sung Koo ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 23~29
Three kinds of samples, Trachpenalus curiviostris, Astroconger myriaster and Cantherines modestus which were pre-treated in a processing plant were frozen at
in a contact freezer and stored for 32 days.The numbers of general bacterium, coliforms and E. coli were measured at 8 day intevals during frozen storage and the isolated strains was classified. The results are as follows; 1. The numbers of coliforms and E. coli in the samples before freezing were much higher, than those during frozen storage and it tended to decrease. 2. General bacteria showed little change in number before and after being frozen. Among 97 strains of isolated coliforms, only 4 strains of K. aerogenes I ana 4 strains of K, cloacae were classified and the rest was not determined. 3. Ninety percent of coliforms was found to be psychrotrophic coliforms, which were able to grow at
within a week. 4. Vibrio and Pseudomonas were superior in number before freezing while Flavobacterium cytophaga and Moraxella were superior during frozem storage.
STUDIES ON MARINE BACTERIA IN KOREAN COASTAL WATERS 1. On the distribution of marine bacteria in the Coast of Chung-Mu
LEE Won-Jae ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 31~36
The monthly distribution of marine bacteria in the coastal waters of Chung-Mu was investigated from April, 1976 to March, 1977. The aim of this study was to obtain basic data for the prevention of food poisoning and for the efficient aquaculture of the area. Samples of sea water, mud, fish and shell fish were taken every month. The results are as follows: 1. One thousand four hundred and twenty-six strains were isolated from 732 samples of sea water, mud, fish and shell fish. They were 450 strains of Pseudomonas fluorescens, 422 strains of Achromobacter liquefacience, 72 strains of Vibrio parahaemolyticus, 234 strain of Vibrio alginolyticus, and 248 strains of Proteus vulgaris. 2. V. parahaemolyticus occupied
of the total samples and
of them were found in the sea water and mud. 3. The muds sampled districtly beneath the aquaculture raft contained much gas. They seemed to originate from the deposition of excretion of shell fish. The fatness of the shell fish was low where the gas was abundant. 4. It was .found that the shell fish with low fatness contained much Vibrio sp. 5. Regional distribution shows that marine bacteria were abundant in the order of station 10, 9, 8, 11, 1. The area around station 9 was polluted by reclamation of the area, and station 8 showed the influence of the excrement treat tank located nearly.
A REVIEW OF SOME ASPECTS OF THE YELLOWFIN TUNA FISHERY IN THE ATLANTIC OCEAN
CHOO Woo Il ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 37~47
Korea started the Atlantic tuna fishery from 1964 by means of longline, then added bait-boats in 1972. Both fisheries have given the top priority to catch yellowfin tuna(Thunnus albacares). The paper reviews available catch, effort and biological data, estimates some population parameters in order to understand the status of the Atlantic yellowfin tuna as a whole. The main findings are summarized as follows: 1. The total of 476 million hook-equivalent fishing effort was thrown to catch yellowfin tuna in 1974, among which one thired was shared by longliners. 2. The dominant age group becomes younger in both surface and longline fisheries. 3. The recent mortality coefficients were calculated as 1.5 for total mortality and 0.7 for fishing mortality. 4. The weight at recruitment was 2.7 kg in 1973 which was smaller than the regulation size(3.2kg) proposed by ICCAT. 5. The maximum sustained yield was calculated to 95-145 thousand metric tons, which was the level of recent catch. Therefore, it is apparent that the present yellowfin tuna fishery should continue to receive close attention.
FISHES COLLECTED IN THE FISHING GROUND OF CHROMIS NOTATUS ALONG THE COAST OF SEOGWIPO IN JEJU-DO
BAIK Moon-Ha ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 49~52
The author has collected as many as 35 species belonging to 25 genera in 18 families by trap net in the fishing ground of Chromis notatus along Seogwipo coast in Jeju-do. Among 35 species included are 6 species of Labridae, 4 species of Scorpaenidae, 3 species of Pomacentridae, and 3 species of Monacanthidae. In regard to the amount of catch, more than
are Chromis natatus which are mainly caught within the depth of
, and the rest are largely Apogon semilineatus and those belonging to Labridae. ; Some ornamental fishes, subtropical fishes and some rare species are also collected.
LE RAPPORT SUR LA CONDITION ET L'ENVIRONMENT DE L'AQUICULTURE
PYEN Choong Kyu ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 53~60
FLUORIDE CONCENTRATION IN THE COASTAL SEA WATER IN THE 내소-WEST OF KOREA
KIM Jong Man ; HAHN Sang Bok ; LEE Jong Wha ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 61~64
Fluoride analysis using fluoride specific ion electrode has been carried out from sea water samples at 15 stations in the west coast of Korea. The concentration was varied from 0.83 to 1.00 ppm; ratio to chlorinity ranged from 4.60 to
. There was a tendency that the ratio to chlorinity was increased with the depth. In general the concentration was less than that of other seas.
THE CHARACTERISTIC OF A TWO STAGE AMMONIA RECIPROCATING COMPRESSOR
CHO Kweoun Ock ; OH Hoo Kyu ;
Korean Journal of Fisheries and Aquatic Sciences, volume 10, issue 1, 1977, Pages 65~69
The characteristics of two stage compressor which is constituted of two separated reciprocating compressors was tested measuring the volumetric efficiency of each compressor at suction of both bighandlowpressdresideusillgorificetypeflolrmeters. The volumetric efficiency of low pressure side compressor was lower than that of the high side when they were operating under the same compression ratio. And it tended to reduce obviously by lowering evaporating temperature resulting in a markable reduction of refrigerating capacity at the same time. It is assumed that the falling of volumetric efficiency at low side compressor was directed by the decrease in evaporating temperature which derives the falls of gas pressure at suction, increase in compression ratio, and gas flow resistance at suction and discharge valves.