다시마 알긴산으로 제조한 에스테르화합물 캡슐에 있어서 내부물질의 잔존량에 미치는 유화조건과 알긴산농도의 영향

유병진 ( Byeong Jin You ),임영선 ( Yeong Seon Lim ) 한국수산과학회 2002 한국수산과학회지 Vol.35 No.6

다시마 알긴산으로 에스테르 화합물을 캡슐화할 때 에스테르 화합물의 잔존량에 미치는 가공조건을 알아보기 위하여, 에스테르 화합물의 종류, 유화제 첨가비율 및 에스테르 화합물 (내부물질)에 대한 alginates (벽막물질)의 비율을 달리하여 캡슐을 제조하고 제조중에 사용되는 gelling solution (1M CaCl₂)과 캡슐의 세척수에 이동되는 에스테르 화합물의 량과 캡슐에 잔존하는 에스테르 화합물의 량을 측정하였다. 에스테르 화합물의 분자량이 커질수록 캡슐에 잔존하는 량이 증가하였고, gelling solution과 세척수에 이동되는 량이 감소하였다. Ethyl caprylate량에 대한 유화제의 첨가 비율이 증가하여도 gelling solution와 세척수에 이동되는 ethyl caprylate의 량은 1.7~1.8%와 2.3~6.5%이었고, 캡슐에 잔존하는 량은 90.4~96.0%로 거의 변화가 없었다. 그러나 캡슐을 25˚C에 저장할 때 ethyl caprylate의 반감기는 유화제의 첨가비율이 증가할수록 급격히 증가하였다. Ethyl captylate에 대한 alginates 비율이 증가하여도 gelling solution과 세척수에 이동되는 ethyl caprylate 량은 각각 1.8~2.0% 및 2.9~3.5%이었고 캡슐에 잔존하는 량은 94.3~95.0%로 큰 차이가 없었다. 그러나 캡슐을 25˚C에 저장할 때에 벽막물질의 비율이 증가함에 따라 내부물질의 반감기는 증가하였다. To investigate the effects of preparation conditions of encapsulating ester compounds on retention rate of core material in microcapsules prepared with sea tangle alginate, the amounts of ester compounds migrated gelling solution (1M CaCl_2) and washing water from microcapsules that were prepared by adding kinds of ester compound, by controlling ratios of emulsifier to ester compounds and by differing ratios of alginates (wall material ) to ester compounds (core material) were measured. Also the amount of ester compounds retained in microcapsules was measured. The higher weight molecular of ester compounds were , the lower amount of ester compounds migrated gelling solution and washing waster from microcapsules were. But its amounts retained in microcapsules were increased. The changes of ethyl caprylate amount migrated gelling solution and washing water from microcapsules prepared by increasing ratios of emulsifier to ethyl caprylate were little, but its half-lives in microcapsules during storage at 25 ˚C were steeply increased. Increasing ratios of wall material to core material, ethyl captylate amount migrated gelling solution and washing water from microcapsules showed 1.8~2.0% and 2.9~3.5% respectively but half-lives of ethyl caprylate retained in alginate microcapsules were increased.

에스테르 화합물의 투과율에 영향을 미치는 다시마 Alginate 필름의 가공조건

유병진(Byeong Jin You),심재만(Kae Man Shim) 한국수산과학회 2000 한국수산과학회지 Vol.33 No.2

The effects of alginate extracting conditions from sea tangle and the effects of film preparation conditions on the physical properties of the alginate film were investigated by measuring ester compounds permeability. The higher concentration of sodium carbonate solution as extracting solvent made the higher ethyl acetate permeability of alginate film, but extracting time showed little efficacy of alginate film permeability. The higher concentration of sorbitol as a plasticizer showed higher ethyl acetate permeability of alginate film. Adding various plasticizers, the ethyl acetate permeability of algiante films was increased in order as follow : sorbitol, glycerol and polyethylene glycol. Ester compounds having the lower molecular weight showed the higher permeability. And the higher temperature made the ethyl acetate permeability of algiante film to be high.

다시마 Alginate 의 추출조건이 alginate 필름의 성질에 미치는 영향

유병진(Byeong Jin You),심재만(Jae Man Shim),장미화(Mi Hwa Chang) 한국수산과학회 1999 한국수산과학회지 Vol.32 No.5

The extracting conditions of alginates from sea tangle were evaluated by measuring water vapor permeability (WVP) and tensile properties of alginate film to obtain basic data of making an edible and biodegradable film. The algnates were extracted with 1%, 3% and 5% sodium carbonate (Na₂CO₃) for 1, 3, 5 and 10 hours, and the alginate film was made with various plastiazers. The higher concentration of Na₂CO₃ solution showed the lower viscosity and polymerization degree of alginate and the film prepared with alginates haring low viscosity showed the higher WVP. The extracting hours had little effect on the VWP and the eloogation of alginate film, but the polymerization degree of alginates directly affected the tensile strength of the film. The addition of sorbitol and polyethylene glycol as a plasticizer lowered the WVPs and the elongation of alginate film.

[산ㆍ학ㆍ연 논단] 감자전분을 이용한 1-Octen-3-ol의 미세캡슐화

유병진(Byeong-Jin You) 한국식품영양과학회 2003 식품산업과 영양 Vol.8 No.2

송이 향을 오랫동안 유지하기 위한 기초자료를 얻을 목적으로 일반적으로 많이 이용되는 감자전분을 matrix로 사용하여 송이 향의 주성분인 1-octen-3-ol을 미세캡슐화 하는 조건을 조사한 결과는 다음과 같다. 전분농도 5.5% 이하 용액의 점도는 60℃에서 420 cP이하를 나타내었고 6.0% 이상의 용액은 820 cP 이상을 나타내어 이 농도를 경계하여 점도의 변화가 뚜렷하게 구별되었다. 균질화하기 전과 후의 감자전분용액의 점도변화에서는 감자전분에 emulsifier와 1-octen-3-ol을 첨가하여 균질화한 에 멀젼 용액의 점도가 균질화하기 전 용액의 점도보다 ½ 이하 값을 나타내어 균질화 공정이 용액의 점도를 낮추었다. 감자전분용액의 농도가 높을수록 1-octen-3-ol의 잔존량이 많았다.

다시마 alginate 점도 및 금속이온 결합능에 미치는 추출조건의 영향

유병진(Byeong Jin You),임영선(Yeong Sun Im),정인학(In Hak Jeong) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.2

In order to investigate the physical properties of alginate extracted from sea tangle, Laminaria app., under various conditions, viscosity and binding capacity of metal ion (BCMI) of alginate were measured. The higher concentrations of sodium carbonate and the longer extracting time became, the lower apparent viscosity and BCMI were. BCMI in alginate reached maximum at the concentration of 0.06M metal ion. The BCMI of Pb^(++) ion was the highest but Cu^(++) ion was the lowest in the five metal ions. BCMI was increased in proportion as increase of viscosity in alginate.

구연산 전처리에 의한 개량조개의 저염젓갈가공

유병진(Byeong-Jin You),장미화(Mi-Hwa Chang) 한국식품과학회 1992 한국식품과학회지 Vol.24 No.6

조미 반건조 제품 가공 공정에 따른 연어육 Texture 의 변화

유병진(Byeong Jin You) 한국수산과학회 1997 한국수산과학회지 Vol.30 No.2

To obtain basic data for processing semi-dried salmon meat product, the results that were measured the textural properties of salmon meat during salting, sugaring and drying process followed. Drying time and temperature were longer, the moisture amount of salmon meat were reduced. Hardness of salmon meat was direct proportion to shear stress, but hardness was inverse proportion to cohesiveness during drying process. After sugaring and salting salmon meat, drying time was longer, hardness and shear stress of salmon meat were increased. The sensory evaluation of the textures of sugaring salmon meat dried for 3 hrs showed slightly good. In the changes of texture of salmon meat during steaming, hardness and shear stress of salmon meat dried for 4 hrs were higher than that dried for 10 hrs. And steaming time was longer, hardness of salmon meat dried for 4 hrs was decreased and cohesiveness was not changed.

다시마 alginate 와 bile acids 의 결합능에 미치는 추출조건의 영향

유병진(Byeong Jin You),임영선(Yeong Sun Im),정인학(In Hak Jeong),이강호(Kang Ho Lee) 한국수산과학회 1997 한국수산과학회지 Vol.30 No.1

Changes in bile acid binding capacity in vitro and physical properties of alginate extracted from sea tangle (Laminaria spp.) and residue after extracting alginate (RAEA) were investigated. For the purpose, extraction conditions controlled under 1, 3 and 5% of sodium carbonate solution, and 1, 3, 5 and 10 hours of extraction time at 60℃. The less sea tangle had particle size and the higher concentration of sodium carbonate solution increseded, the more yield of alginate gained. High concentration of sodium carbonate solution and long extraction time resulted in weakly binding capacity in vitro by alginate. Among four bile acids, binding capacites with alginate were in the order of cholic, taurocholic acid>glycocholic acid>deoxycholic acid. The binding capacity of RAEA was rated at almost same degree of alginate. For increasing the binding capacity of bile acids by alginate, it was subject to high viscosity and degree of polymerization.

가공조건이 명태어분단백질 필름의 수증기 투과도와 용해도에 미치는 영향

유병진(Byeong Jin You),심재만(Jae Man Shim) 한국수산과학회 2000 한국수산과학회지 Vol.33 No.5

생분해성이면서 가식성인 어분 단백질필름 제조를 목적으로 필름의 가공조건이 단백질필름의 성질에 미치는 영향을 밝히기 위하여 명태어분으로부터 단백질을 추출하고, 가공조건을 달리하여 제조한 필름의 수증기 투과도와 용해도의 변화를 측정한 결과는 다음과 같다. APMPI 필름의 수증기 투과도는 가소제 glycerol의 첨가량이 증가함에 따라 증가였으나, pH 7 이상에서는 pH의 증가에 따라 감소하였다. 필름단백질의 용해도는 pH 및 가소제의 농도가 증가함에 따라 감소하였다. 필름의 총용해량은 가소제의 농도가 증가함에 따라 증가하였으나 pH가 증가할수록 감소하였다. 가소제의 종류를 달리하여 필름을 제조할 때 수증기 투과도는 glycerol, polyethylene glycol 및 sorbitol 첨가 필름의 차례로 높게 나타났다. 또한 총용해량은 반대의 순서를 나타내었다. The effects of film processing conditions on the water vapor permeability (WVP), the solubility of film`s protein (SFP) and the soluble film`s meterials amount (SFMA) were investigated to establish the conditions for preparing biodegradable and edible Alaska Pollack meal protein isolate (APMPI) film. WVPs of film were decreased with increasing plasticizer concentration but those were decreased with decrement of APMPI`s pH values. SFPs were decreased with increasing APMPI`s pH and plasticizer concentration. SFMAs were also strongly affected by plasticizer concentration and APMPI`s pH. In the case of adding different plasticizers, WVP was increased in order as follows: glycerol, polyethylene glycol and sorbitol but SFMA showed inverse order.

추출조건이 어분단백질 물성과 필름의 ester 화합물 투과율에 미치는 영향

유병진(Byeong Jin You),심재만(Jae Man Shim) 한국수산과학회 2001 한국수산과학회지 Vol.34 No.4

어분단백질의 이용성을 높이기 위한 가식성 혹은 생분해성 필름가공을 목적으로 알칼리 처리하여 제조된 FMPI의 물성과 이 물성과 ester 화합물의 필름 투과율과 인장강도에 미치는 영향을 조사한 결과는 다음과 같다. 어분으로부터 알칼리처리하고 추출조건을 달리하여 제조된 FMPI의 추출량은 추출시간이 증가함에 따라 증가하였다. FMPI의 소수성은 추출시간 1시간일 때 가장 높게 나타났다가 그 이상 추출시간이 경과함에 따라 감소하였다. 유화활성은 추출시간이 5시간까지 증가함에 따라 급격한 증가를 보였으며, 유화안정성은 추출시간 2시간까지 추출시간의 증가에 따라 급격한 감소를 보여 유화활성과 상반된 결과를 나타내었다. 점도는 pH가 2일 때 가장 높게 나타났고 pH가 4일 때 가장 점도가 낮게 나타났다. 첨가하는 가소제의 농도가 증가할수록 필름의 ethyl acetate의 투과도는 증가하였다. 가소제의 종류별에 따른 ethyl acetate의 투과도는 polyethylene glycol, glycerol 및 sorbitol 첨가 필름 순으로 높게 나타났으며, ester 화합물 중에서는 ethyl formate의 투과속도가 가장 높았다. 온도가 증가함에 따라 ethyl acetate의 필름 투과속도는 증가하였다. FMPI의 표면소수성이 증가하면 필름의 인장강도가 증가하였다. 필름의 신장율은 FMPI의 표면소수성보다 가소제의 종류에 더 큰 영향을 받았다. To obtain the basic data for preparing edible or biodegradable film, fish meal protein isolates (FMPI) were prepared through alkaline extraction. And FMPI`s properties and the ester compounds permeability of FMPI film were measured. FMPI were extracted under various extracting time with 0.2 N NaOH solution at 60℃. Recovery ratios of FMPI extracted from fish meal were increased with extracting time increasing. Surface hydrophobicity of FMPI extracted for 1 hr showed highest value. Emulsifying activity index (EAI) was increased with the increasement of extracting time but its emulsifying stability index (ESI) showed an inverse results. Viscosity of FMPI solution showed the highest value at pH 2 but showed the lowest value at pH 4. The higher concentration of sorbitol as plasticizer showed the higher ethyl acetate permeability of FMPI film. Ethyl acetate permeability of FMPI films according to kind of plasticizers showed different degree and increased in order as follow: polyethylene glycol, glycerol and sorbitol. Ester compounds having the lower molecular weight showed the higher permeability. Increment of temperature increased the ethyl acetate permeability of FMPI film. FMPI having higher surface hydrophobicity made FMPI film be higher tensile strength. On elongation of FMPI films, kinds of plasticizer were more effective than surface hydrophobicity of FMPI.