• Journal of the Korean Society of Food Science and Nutrition
• /
• v.25 no.2
• /
• pp.331-337
• /
• 1996

본 연구는 콩을 이용한 가공식품개발을 목적으로 두유 가열시 기액 표면에 형성되는 SPLF의 제조조건과 이화학적인 특성에 대하여 연구하였다. 고형분이 각각 4.9%, 6.2%, 7.45%, 9.01%인 두유를 $95\pm1^{\circ}C의$ 수욕상에서 가열하면서 순차적으로 얻어지는 SPLF의 중량과 두께를 측정한 결과 고형분이 높은 것일수록 우수하였으며, 시간당 SPLF의 생성률은 고형분에 따라 다른 경향을 보이는 데 높은 고형분에서는 가온 초기에는 생성률이 크나 그 이후 감소하는 경향을 보였다. SPLF의 색도는 걷는 횟수가 증가할수록 흰색은 감소하고 적색과 황색은 증가하여 색차($\Delta$E)가 증가하였다. SPLF의 hardness는 고형분 6.20%인 두유로부터 4번째 걷어진 sheet에서 크게 나타났다. SPLF의 일반성분 분석 결과 단백질의 함량은 3, 4, 5번째 채취한 것이 높았고 지방은 점차 감소하는 경향을 보였으나 탄수화물과 회분은 증가하는 경향을 보였고 SPLF의 주성분인 단백질과 지질의 비는 증가하였으며 당질은 그 함유 비율이 점점 커졌다. 원료콩과 비교한 유리당의 이행률의 분석한 결과, 걷는 횟수에 따라 증가하여 서당은 97%가, stachyose와 raffinose는 각각 89%, 49%가 이행되었다.

• Korean Journal of Food Science and Technology
• /
• v.23 no.5
• /
• pp.605-609
• /
• 1991

The physical properties which must be considered as engineering factors affecting on the evaporation process of fruit juices are boiling point rise, density, viscosity, thermal conductivity and specific heat. These factors are varied with food ingredients, soluble solids, pressure and temperature. In the reserch, it has been worked to obtain the data and to develop prediction model for the boiling point rise as a faction of soluble solid and pressure by the regression of SPSS package program. For the prediction model of density, it was developed as a fuction of soluble solid content on apple and pear juices. For the viscosity model, it was establised by the factors of temperature and content of soluble solid through the optimization program.

• Applied Biological Chemistry
• /
• v.49 no.1
• /
• pp.86-89
• /
• 2006

설탕을 원료로 제조한 액상 프락토올리고당 제품의 품질 유지기간을 향상시키기위하여 pH, 고형분 농도, 과당 농도가 프락토올리고당(FOS)의 가수분해에 미치는 영향을 조사하였다. 효소 반응액의 pH 6.0 이상과 최종 제품의 고형분 농도 80%에서 FOS의 잔존율이 크게 향상되었다. 또한 과당 농도가 증가할수록 FOS의 잔존율은 감소하였다. 효소 반응액의 pH 6.0, 고형분 농도 80%, 과당 농도 1.1%의 시료를 $60^{\circ}C$에 16 일간 보관한 결과 FOS의 잔존율은 95%로 높게 유지되었다.

• Journal of the Korea Institute of Building Construction
• /
• v.22 no.6
• /
• pp.543-551
• /
• 2022

The mechanical performance and vibration damping ratio performance of a specimen according to the polymer mixing rate were evaluated for polymer modified mortar. As a polymer, Styrene Butadiene Rubber(SBR) liquid polymer with a solid content of about 49~51% was used, and the polymer content was increased by liquid 5%. The specimen was 40*40*160(mm), and after curing, compressive strength, flexural strength, and vibration damping ratio were measured using the ultrasonic pulse method. As a result, it was found that the compressive strength decreased as the polymer was mixed, but the flexural strength was increased. The vibration damping ratio increased by 11% at 5% polymer, 28% at 10% polymer, 33% at 15% polymer, and 72 at 20% polymer. I was found that the incorporation of the polymer was very effective to reduce the vibration of the mortar. In addition, through SEM and SEM-EDS analysis, it is determined that the cause of vibration reduction due to polymer mixing is that the polymer film formed in the transition zone of aggregate and internal voids buffered the vibration of the mortar inside. Taken together, in the scope of this study, the appropriate polymer mixing ratio for reducing the vibration of mortar is judged to be about 7.5%.

• Journal of Advanced Marine Engineering and Technology
• /
• v.31 no.8
• /
• pp.1028-1034
• /
• 2007

In order to establish a criteria of solid particle separation performance test on marine centrifugal purifier at factory acceptance test, an investigation had been done on criteria of test standards, regulations and test specifications of purifier manufactures. KS V 7836, fuel oil and lubricating oil purifiers for marine use-centrifugal type, the criteria of solid particle separation is studied in the point of reality, restricts and analysis method. It is proposed that a reasonable criteria and analysis method should be adopted, and the current criteria shall be revised to adequate levels considering reasonable basis and industrial technology levels. Also, the test analysis conceptions, separation efficiency method and particle size restriction method, are reviewed to fulfil separation performance test for marine centrifugal purifiers.

• Korean Journal of Food Science and Technology
• /
• v.25 no.5
• /
• pp.589-591
• /
• 1993

Effects of enzymatic hydrolysis of polysaccharides with using three commercial mixed enzymes (Ultrazyme, Celluclast, Viscozyme) were investigated on supernatant ratio, solid yields and viscosity of sea mustard extracts. The result showed that enzymatic hydrolysis prior to extraction increased the solids concentration up to 27.3% and the solids yield up to 14.0%. However the supernatant ratio after centrifugation of the sea mustard suspension was rather reduced. The viscosity of the extracts was significantly increased during initial enzymatic hydrolysis.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
• /
• 2005.05a
• /
• pp.307-311
• /
• 2005

본 연구는 동결농축유의 미량성분을 분석하고 관능적 특성을 알아보기 위하여 실시하였다. 농축유의 수용성비타민은 동결농축유가 진공농축유보다 비타민의 감소율이 적었고, 같은 동결농축유의 경우에 17% 고형분인 농축유가 27% 고형분인 농축유보다 비타민의 감소율이 적었다. 지용성비타민도 동결농축유가 진공농축유보다 비타민 감소율이 적었으며, 수용성비타민 보다는 그 감소율이 크지 않았다. 유리아미노산은 진공농축유보다 동결농축유에서 많이 측정되었고 단쇄유리지방산은 진공농축유가 동결농축유보다 생성량이 많았으며 고형분이 많을수록 많이 측정되었다. 지방산화도는 단쇄유리지방산의 결과와 같이 동결농축유보다 진공농축유가 더 높게 측정되었다. 관능검사는 cooked flavor, oxidized flavor, cheesy flavor, fat-taste, oxidized taste, off-taste에서 동결농축유가 진공농축유보다 양호하게 평가되었다. 결과적으로 동결농축유가 진공농축유보다 미량성분의 손실이 적고 관능적으로 양호하게 평가되었기 때문에 영양학적, 관능적으로 우수하다고 사료된다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.9 no.2
• /
• pp.550-555
• /
• 2008

An efficient production method of spirulina extract was developed by enzymatic treatment using proteolytic enzymes. The suitable dosage of Tunicase, a cell lytic enzyme, was used to be 2.0% (w/w). To maximize solid recovery and spirulina extraction (SE) index, which indicates nucleic acid-related substances content, the dosage of Alcalase, commercially available pretense, was found to be 1.0% (w/w). By simultaneous treatments using optimal dosages of Tunicase and Alcalase, the highest SE index and solid recovery were obtained. The SE index and solid recovery of simultaneous treatments were notably enhanced by 100% ($11.4%\;{\rightarrow}\;22.8%$) and 56% ($45.2%\;{\rightarrow}\;70.7%$), respectively, than those of the non-treated extracts.

• Applied Biological Chemistry
• /
• v.50 no.4
• /
• pp.304-307
• /
• 2007

An efficient production method of spirulina extract was developed by enzymatic treatment using cell lytic and proteolytic enzymes. The suitable dosage of Tunicase, a cell lytic enzyme, was found to be 2.0% (w/w). Proteolytic enzymes were screened to obtain high solid recovery and spirulina extraction (SE) index, which indicates nucleic acid-related substances content. Among the seven tested proteases, Esperase was selected and optimal dosage of this enzyme was 2.0% (w/w). The solid recovery and SE index of simultaneous treatment and co-treatment using optimal dosages of Tunicase and Esperase were greatly similar, respectively. However, co-treatment had the effect of shortening total hydrolysis time. The SE index and solid recovery of co-treatment were significantly enhanced by 75% $(11.4{\rightarrow}20.0)$ and 45% $(45.2%{\rightarrow}65.3%)$, respectively, than those of the non-treated extracts.

• Journal of the Korean Applied Science and Technology
• /
• v.31 no.2
• /
• pp.305-312
• /
• 2014

The following study is the result of herbal teas puffed at different temperatures between $140{\sim}220^{\circ}C$. There was change of single breadth that some carbonization occurs according to rise of processing temperature and crude ash content rises relatively, and crude protein and crude fat content had hardly changed and moisture content decreased. The solid elution rate of the herbal teas appeared by 0.18~0.27% (w/w), it increased as puffing temperature rises. The reason for the increase in solid elution rates is due to the breakage of cross bridges between the raw materials in the herbal tea which are carbohydrates, proteins, lipids and etc. after treatments of physical changes rather than chemical ones. Benzopyrene content happened difference in B(${\alpha}$)P content according to processing temperature, raw material by 0.18~0.24 ppbs.