• Title/Summary/Keyword: filefish protein

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Processing Conditions and Quality Stability during Storage of Meaty Textured Fish Protein Concentrate -I. Processing Conditions of Meaty Textured Fish Protein Concentrate from Filefish and Sandfish- (축육과 유사한 텍스쳐를 가진 어육단백질 농축물의 가공조건 및 저장중의 품질변화 -제 1 보 : 가공조건-)

  • Lee, Eung-Ho;Cho, Duck-Jae;Kim, Se-Kwon;Han, Bong-Ho
    • Korean Journal of Food Science and Technology
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    • v.14 no.1
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    • pp.36-42
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    • 1982
  • An investigation on optimum processing conditions for meaty textured fish protein concentrate (MT-FPC) was carried out with the fish meat of filefish, Navodon modestus, and sandfish. Arctoscopus japonicus. The processing conditions were determined by the lipid content and the rehydration capacity of MT-FPC. The optimum pH and sodium chloride content of fish meat were 8.0 and 1.0%, respectively. The most effective soaking conditions were: soaking time in chilled ethanol was 15 min for both filefish and sandfish; amount of chilled ethanol, 3 volumes and 4 volumes for filefish and sandfish, respectively; temperature of chilled ethanol, $25 ^{\circ}C$ for both filefish and sandfish; soaking time in boiling ethanol, 15 and 25 min for filefish and sandfish, respectively; amount of boiling ethanol, 2 and 4 volumes for filefish and sandfish, respectively; and number of snaking in boiling ethanol, 2 and 4 times for filefish and sandfish, respectively. Yields of the product to the minced meat weight, the contents of protein and lipid in MT-FPC prepared from filefish were 13.7%, 84.5% and 0.2%, and those from sandfish were 12.5%, 84.2% and 1.1%, respectively.

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Effect of Dietary Fiber on the In Vitro Digestibility of Fish Protein (식이 섬유소가 어류단백 소화율에 미치는 영향)

  • Ryu, Hong-Soo;Park, Nam-Eun;Lee, Kang-Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.21 no.3
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    • pp.255-262
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    • 1992
  • In vitro digestibility of filefish, protein was substantially decreased by fiber constituents in the follow-ing order : pectin (9.97%), gum karaya (7.03%), sodium alginate (6.12%),and cellulose (1.52%). The order of reduction by fibrous residues from vegetables ranked as follows : sea tangle (12.36%), Ro-maine lettuce (11.12%), perillar leaf (8.96%), and green pepper (5.15%). The inhibitory effect of the dietary fibers towards filefish protein digestion, expressed as soybean trypsin inhibitor equivalents, in-creased with added levels, but the inhibition differed with the sources of dietary fibers. Sea tangle and sodium alginate were most active in decreasing the concentration of essential amino acid from filefish protein hydrolysis. Sodium alginate exerted an inhibitory effect on the activity of trypsin, but the other fiber constituents did not have an inhibitory potency on trypsin and bacterial pretense (Streptomyces griceus). Results supported that dietary fiber components may reduce protein digestibility through the interaction of dietary fiber components with filefish protein.

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Studies on the Preparation and Utilization of Filefish Protein Concentrate (FPC) -I. The Preparation and Properties- (말쥐치 농축단백질(濃縮蛋白質)의 제조(製造) 및 이용(利用)에 관(關)한 연구(硏究) -제 1 보 : 제조조건(製造條件) 및 성질(性質)-)

  • Yang, Han-Chul;Son, Heung-Soo;Lim, Seung-Taik
    • Korean Journal of Food Science and Technology
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    • v.15 no.2
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    • pp.141-149
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    • 1983
  • The purpose of the present work is to find out the optimal conditions for the production of filefish protein preparations and to define the functional properties of the protein products. Fish protein concentrate (FPC) and fish protein isolate (FPI) were prepared by extraction of whole or headed and gutted filefish with various organic solvents. The results of the present study are as follows; 1. Among the solvents tested iso-propyl alcohol appeared to be the most effective for the extraction of lipid and also for that trimethylamine from the fish muscle. 2. The optimal extraction time showed to be 20 minutes with ethyl iso-propyl alcohol at $65-70^{\circ}C$under adequate mixing. 3. The most effective solvent ratio to the weight of fish material was proved to be 5:1 at the first extraction and to be 2:1 at the second stage. 4. The lipid content of the protein preparations reduced to below 0.5% by the third stage of extraction of headed or gutted filefish. The protein concentrate from whole fish, however, showed the lipid content of 0.27-0.31% only after the fifth stage of extration. 5. The protein contents of the protein concentrate and the protein isolate from whole filefish were 81.08% and 87.41% and the lipid contents of the two protein preparations were 0.43% and 0.45% respectively. 6. Higher calcium content was found in the protein concentrate rather than in the protein isolate. No sodium and potassium in the protein isolate were detected while the fish concentrate appeared to contain a considerable amounts of both elements. 7. The functional properties, such as suspended solids, wetability, emulsion stability and foam viscosity of the filefish protein isolates were proved to be higher than those of the protein concentrate.

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Studies on the Preparation and Utilization of Filefish Protein Concentrate (FPC) -II. The Effect of Processing Conditions on the Functional Properties- (말쥐치 농축단백질(濃縮蛋白質)의 제조(製造) 및 이용(利用)에 관(關)한 연구(硏究) -제 2 보 : 제조방법(製造方法)에 의한 기능성(機能性)의 변화(變化)-)

  • Yang, Han-Chul;Lim, Seung-Taik;Son, Heung-Soo
    • Korean Journal of Food Science and Technology
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    • v.15 no.3
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    • pp.252-261
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    • 1983
  • Isopropyl alcohol extracted filefish protein concentrate (FPC) and NaOH hydrolyzed filefish protein isolate (FPI) were used for the investigation on the effect of processing conditions on the molecular distribution and functional properties. The molecular distribution of FPC on polyacrylamide gel showed a resemblance to that of fish muscle, but that of alkaline hydrolyzed FPI showed the severe degradation of protein. The content of several amino acids in FPI were lower than those of FPC. The pepsin digestibility of the FPC dried at high temperature was relatively high. FPC didn't exhibit a significant difference in nitrogen solubility at the pH range of 3.0-9.0, while FPI showed a wide difference with the pH change. FPI was more suspensible and rehydrated in water than FPC. Although the aeration capacity of FPI was very low, foam viscosity was higher than that of FPC. In contrast with aeration capacity, FPI presented higher emulsion capacity and lower emulsion viscosity than FPC. The size of fat globule in the emulsion of FPC was larger than that of FPI. In general, most functional properties decreased with the increment in drying temperature, except water holding capacity.

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Conditions for Processing of Meaty Textured Fish Protein Concentration from Filefish and Sardine (축육(畜肉) 조직(組織)과 유사(類似)한 말쥐치 및 정어리의 조직(組織) 단백질(蛋白質) 농축물(濃縮物)의 가공(加工) 조건(條件)에 관한 연구(硏究))

  • Lee, Eung-Ho;Sudibjono, Sudibjono;Kim, Se-Kwon
    • Korean Journal of Food Science and Technology
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    • v.11 no.4
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    • pp.232-241
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    • 1979
  • For the effective utilization of the fish resource in coastal regions, an investigation on optimum processing conditions and meat quality textured fish protein concentrate (FPC) was carried out with the fish meat of filefish and sardine. Optimum pH and sodium chloride content of fish meat were 7.5 and 1.0 %, respectively. The most effective soaking conditions were as follows ; soaking time, 30 min ; temperature of ethanol, 5 to $20^{\circ}C$ ; amount of added ethanol, 3 times the weight of the fishmeat paste ; repeated number of soaking in ethanol for filefish and sardine, 2 and 4, respectively. The ethanol remaining is meaty textured FPC could be removed effectively by forced-air drying. Yields of the product to the minced meat weight and the contents of protein lipid in meaty textured from filefish were 21.1, 77.6 and 0.2 % and those from sardine were 24.3, 75.8 and 3.6 %, respectively. Contents of essential amino acids in meaty textured FPC of filefish and sardine were not inferior to those of beef, textured soybean protein and FAO pattern. Beef meat could be substituted with the meaty textured FPC up to 50 % in the processing of typical meat balls and hamburger without any significant loss in its taste, odor and texture.

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Studies on the Refining and Utilization of Filefish Viscera Oil 2. Utilization of Filefish Viscera Oil (말쥐치 내장유의 정제 및 이용에 관한 연구 2. 말쥐치 내장유의 이용)

  • 강훈이;대도해명;소천천추;김동연;이응호
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.21 no.2
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    • pp.181-186
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    • 1992
  • For the effective utilizing of refined filefish viscera oil, it was added to fish meat paste based products as a dietary supplement of polyunsaturated fatty acids. The storage stability and physicochemical properties of the product(kamaboko) was tested. Lipid oxidation of kamaboko could be retarded and texture expressed as jelly strength could be enhanced by adding of emulsion curd prepared from water, refined filefish viscera oil and soybean protein and sodium erythorbate during the storage at 5$^{\circ}C$. These results suggested the possibility that the refined filefish viscera oil containing highly polyunsaturated fatty acid, especially EPA and DHA could be used as a food ingredient for dietary supply of the lipids.

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Synthesis and Functional Properties of Plastein from the Enzymatic Hydrolysates of Filefish Protein 2. General Properties and IR Spectrum of Plasteins (말쥐치육 단백질의 효소적 가수분해물을 이용한 Plastein의 합성 및 그 물성 2. Plastein의 일반적 성상과 IR Spectrum)

  • KIM Se-Kwon;LEE Eung-Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.20 no.5
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    • pp.431-440
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    • 1987
  • In order to develop a new type of food source for the effective utilization of fish protein, plastein reaction was applied to improve the functional properties of filefish protein. Plasteins were synthesized from a peptic filefish protein hydrolysate by papain, pepsin, $\alpha-chymotrypsin$ and protease(from Streptomyces griceus) under the optimum conditions of previous paper). Also, L-glutamic acid diethylester and L-leucine ethylester were incorporated into plastein during the plastein reaction by papain. And, General composition, yield, molecular weight, amino acid composition, color and IR spectrum of plasteins were measured. The protein, ash and lipid content of the plasteins were $72\~78\%,\;7.4\~11.8\%\;and\;0.3\~0.9\%$ respectively. The yield of plasteins were papain $55.0\%,\;pepsin\;47.6\%,\;\alpha-chymotrypsin\;38.3\%,\;protease\;23.6\%$, glutamic acid-incorporated plastein (Glu-Plastein) $35.0\%$, and leucine-incorporated plastein (Leu-plastein) $45.7\%$. The glutamic acid and leucine content in Glu-plastein and Leu-plastein were $38.7\%,\;41,7\%$, respectively, while the contents in the peptic filefish protein hydrolysate were $16.01\%\;and\;8.16\%$, respectively. The amino acid compositions were similar to that of the original filefish muscle protein. The major molecular weights of the peptic hydrolysate estimated by gel filteration were 2,000 and 310, and those of plasteihs were 21,000 and 4,900 for papain, 24,000 for pepsin, 18,500 for $\alpha-chymotrypsin$ 6,700 for protease, 24,000 for Glu-plastein and 17,000 for Leu-plastein. The structural changes in freeze-dried filefish meat, the FPC and hydrolysate were not observed on the IR spectrum. But plasteins showed amide I band in $1,600\~l,700cm^{-1}$ range and resulted in a strong band in $800\~850\;cm^{-1},\;700\~750\;cm^{-1}\;and\;650\~700\;cm^{-1}$. The amide I band of Glu-plastein was wider than those of other plasteins and had also a small band at $1,440\;cm^{-1}$.

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Processing Conditions and Quality Stability during Storage of Meaty Textured Fish Protein Concentrate -II. Quality Stability during Storage and Utilization of Meaty Textured Fish Protein Concentrate from Filefish and Sandfish- (축육과 유사한 텍스쳐를 가진 어육단백질 농축물의 가공조건 및 저장중의 품질변화 -제 2 보 : 저장중의 품질변화-)

  • Lee, Eung-Ho;Cho, Duck-Jae;Jeon, Joong-Kyun;Cha, Yong-Jun;Kim, Se-Kwon
    • Korean Journal of Food Science and Technology
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    • v.14 no.1
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    • pp.43-48
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    • 1982
  • Quality of meaty textured fish protein concentrate (MT-FPC) prepared from filefish. Navodon modestus, and sandfish. Arctoscopus japonicus, was investigated. The stability of the product during storage under various conditions was evaluated with rehydration capacity, thiobarbituric acid (TBA) value and browning colour density. MT-FPC packed in glass bottle with air and stored at room temperature showed no significant differences in TBA value, rehydration capacity and browning colour density during the storage period of 90 days. The jelly strength of product prepared from filefish was weaker than that of sandfish: and beef meat could be substituted with MT-FPC up to 50% in making hamburger and fried meat balls without a significant loss in taste, odor and texture.

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Processing Conditions and Quality Stability of Filefish Steak during Frozen Storage (말쥐치 스테이크가공조건(加工條件) 및 동결저장중(凍結貯藏中)의 품질안정성(品質安定性))

  • Jeon, Joong-Kyun;Jung, Soo-Yeol;Ha, Jae-Ho;Park, Hyang-Suk;Lee, Eung-Ho
    • Korean Journal of Food Science and Technology
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    • v.16 no.2
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    • pp.127-132
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    • 1984
  • Processing conditions of filefish steaks and effect of soybean protein on quality during frozen storage were investigated. Additives which is added to the filefish meat were 1% of table salt, 0.2% polyphosphate, 0.5% of sodium bicarbonate, 0.2% of monosodium glutamate, 0.2% of red pepper powder, 0.4% of white pepper powder, 0.2% of garlic powder and 0.2% of nutmeg. The mixture was minced in the stone mortar and then stored at -3 to $-5^{\circ}C$ for two days prior to frozen storage. The benefical effects of adding 5% of soybean protein to the filefish steaks were the control of free drip, oxidative rancidity and in texture that exhibited the improvement of quality. The quality of frozen filefish steaks, by sensory evaluvation, was not inferior to that of hamburger on the market.

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Synthesis and Functional Properties of Plasteins from the Enzymatic Hydrolysates of Filefish Protein 1. The Conditions of Protein Hydrolysis and Plastein Synthesis from Peptic Hydrolysate (말쥐치육 단백질의 효소적 가수분해물을 이용한 Plastein의 합성 및 그 물성 I. 말쥐치육 단백질의 가수분해 조건 및 Plastein의 합성조건)

  • KIM Se-Kwon;LEE Eung-Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.20 no.4
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    • pp.282-292
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    • 1987
  • In order to exploit a new type of food source, enzamatically modified hydrolysates and the plasteins synthesized from the filefish (Nevoden modestus) protein hydrolysates by plastein reaction were investigated. The optimum conditions for enzymatic hydrolysis of filefish muscle and synthesis of plasteins using papain, pepsin, $\alpha-chymotrypsin$ and protease (from Streptomyces griceus) were determined. The optimum temperature and pH for the hydrolysis of filefish muscle by papain, pepsin, $\alpha-chymotrypsin$ and protease were $50^{\circ}C,\;40^{\circ}C,\;55^{\circ}C\;and\;50^{\circ}C$; and 6, 2, 7 and 8, respectively. Those for incubation time and enzyme concentration were 4hr, $0.5\%$ for papain and protease, 24hrs $1.0\%$ for pepsin and $\alpha-chymotrypsin$. The pepsin was found to be more reasonable substrate for plastein synthesis from the economic point of view. The enzyme-induced plastein reaction could be optimized, namely, pH 4 for pepsin, pH 7 for $\alpha-chymotrypsin$, pH 6 for papain and protease: substrate concentration $40\%$ for pepsin, $\alpha-chymotrypsin$ and protease, $50\%$ for papain; the time of incubation, 24hr; enzyme/substrate ratio, 1 : 100(W/V) ; incubation temperature, $50^{\circ}C$.

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