간행물
산업식품공학 KCI 등재 Food Engineering Progress
- 발행기관 한국산업식품공학회
- 자료유형 학술지
- 간기 계간
- ISSN 1226-4768 (Print)2288-1247 (Online)
- 수록기간 1997 ~ 2024
- 주제분류 농수해양 > 식품과학 농수해양 분류의 다른 간행물
- 십진분류KDC 574DDC 664
권호리스트/논문검색
제8권 제1호 (2004년 2월) 8건
총설
1.
2004.02
구독 인증기관 무료, 개인회원 유료
Ultrasonic nondestructive testing is a versatile and successful technique that can be applied to a wide variety of material analysis applications. The state-of-art technology of sensors, microprocessors, and methods for signal analysis has been promising new possibilities for the application of ultrasonic techniques to non-destructive and non-hazardous testings. Ultrasonic material analysis is based on a simple principle of physics. That is, the motion of a wave is affected by the medium through which it travels. Thus, changes in one or more of four measurable parameters associated with the passage of a elastic wave through a material - time of flight, attenuation, scattering, and frequency content - would be correlated with changes in physical properties such as hardness, elastic modulus, density, homogeneity or particle size and structure. Ultrasonic techniques can be applied to various biosystems such as food, agricultural products and biological materials, owing to their nondestructive nature. In this paper, the principle of ultrasonic technique was briefly described and its applications to biosystems were reviewed.
4,000원
2.
2004.02
구독 인증기관 무료, 개인회원 유료
Nanotechnology represents a new frontier in science and technology with long term goals and benefits. Nowadays, nanotechnology is producing many revolutions and applications such as quantum computing, surface and materials modification, novel separation and sensing technologies, and human biomedical replacements. These new techniques are being introduced in food and bio filed. In this review, the status and trends related to nanocomposites, nanoparticles, nanotubes, delivery vehicles and biosafety were reviewed. The situation of funding of nanotechnology research in USA, Japan and Korea is also summarized.
4,000원
3.
2004.02
구독 인증기관 무료, 개인회원 유료
Flour extraction was analyzed by milling different varieties of wheat with different gaps of break rolls of Buhler automatic laboratory mill MLU-202. Straight flour extraction increased with decrease in the roll gap, which was mainly due to increase in break-related flour extraction, especially the flour from the first break roll. Farina extraction also increased with decrease in the roll gap, which contained a large amount of shorts and relatively small amount of flour. Straight flour extraction of wheat with larger kernel diameter was higher, but their correlation was not significant. Meanwhile, the kernel hardness showed significant (-) correlation with the flour extraction and (+) correlation with the shorts extraction. Consequently, the effect of the break roll gap was significant on the flour extraction, and the kernel hardness influenced the flour extraction more than the kernel diameter.
4,000원
4.
2004.02
구독 인증기관 무료, 개인회원 유료
A temperature control system was developed to save energy in freeze dryer. The objective part in the freeze dryer was a shelf with an electrical heater and cooling compressor. The shelf was a fluid circulation heat exchanger. The temperature control of the shelf is generally a feedback control by present and set values of the shelf temperature only, whereas in new control algorithm the circulating fluid temperature and fluid circulating speed were included as well. The control algorithm was based on a concept of refraining the heater and cooler from being in operation if unnecessary. Actuators in use were mainly thyristor for heater, relay for cooling compressor, inverter for fluid circulating pump, etc. Type of Interfaces were RS232C, and digital-analog converter and digital-output converter. Program language was Visual Basic 6.0. Finally, control performance by the new algorithm could be improved in terms of energy saving and accuracy.
4,000원
5.
2004.02
구독 인증기관 무료, 개인회원 유료
To develop a kimchi with high sensory quality and storage stability, the optimum pasteurization time and temperature were investigated. Sliced kimchi with different acidity (0.3, 0.5, and 0.8%) was prepared and pasteurized at 65 or 75oC, then the microbiological (number of total aerobic bacteria, lactic acid bacteria, and yeasts), physicochemical, and sensory changes were measured. The viable counts of total aerobes, lactic acid bacteria, and yeasts as well as the values of pH and acidity changed rapidly in control. However, the growth of microorganisms was controlled by pasteurization treatments, and the changes of pH and acidity in the treated kimchi were much smaller than those of control, although acidity of the samples was different at the initial state. The sensory results indicated that the overall quality of kimchi samples pasteurized at 0.3 or 0.8% acidity was relatively lower than that for the samples at 0.5% acidity. Particularly, kimchi pasteurized at 65oC were high scored in quality attributes compared to the other samples, with preserving a desirable flavor during whole storage period.
4,000원
6.
2004.02
구독 인증기관 무료, 개인회원 유료
To examine the utilization of the soluble proteoglucan in oats as a nutraceutical ingredient, soluble components were extracted from Oat Bran Concentrate (OBC) by varying the experiment factors such as temperature (4060oC), ethyl alcohol concentration (0~20%), and pH (5~9), and then analyzed for their compositions and viscosity. The total yield of oat soluble extracts ranged between 6.4~17.9 and the contents of β-glucan, protein, lipid, and ash in oat extracts were 21.4~38.3%, 23.2~29.0%, 8.3~11.8%, and 5.9~7.9%, respectively. The extraction yield increased with the extraction temperature, but decreased with the alcohol concentration and pH. The β-glucan and protein contents increased with increasing temperature and decreasing ethanol concentration. However, the pH level did not influenced those contents. The viscosity of 2% oat extract solution ranged between 8.6~83.1 cp at different share rates, showing the pseudo-plastic flow properties. Results suggested that extraction condition could be controlled the purity of β-glucan and protein and applied commercially to the large-scale process.
4,000원
7.
2004.02
구독 인증기관 무료, 개인회원 유료
Curcumin, the major yellow-colored pigment in turmeric(Curcuma longa L.), was extracted by using supercritical carbon dioxide. Optimum extraction conditions were determined. Overall experiments were planned by central composite design and results were analyzed by response surface methodology to find effects of three independent variables, temperature(X1), co-solvent flow rate(X2) and pressure(X3) on the yield of curcumin extract(Y). Regression model optimized by response surface analysis was as follows Y = -8.581270 + 0.220770X1 + 1.176731X2 + 0.036873X3 + -0.0026816X12 - 0.013010X2X1 - 0.103353X22 + 0.000198X3X1 - 0.0000825X3X2 - 0.000096554X32. Optimum temperature, pressure and co-solvent flow rate for extracting curcumin from turmeric were 40.31oC, 3.07 ml/min and 231.59bar, respectively, and statistical maximum yield of curcumin was 1.922%.
4,000원
8.
2004.02
구독 인증기관 무료, 개인회원 유료
The optimization of conditions for the cultivation of Agaricus blazei was conducted in order to do mass production of mycelia by submerged cultivation. The carbon source and nitrogen source of medium were selected with high fructose syrup and soybean flake, and their optimized concentrations were determined as 8% and 3% respectively. Operation conditions were also optimized as the culture temperature of 25oC and pH of 6.5. The production of mycelia in the fermenter with optimized culture conditions has reached to 8.04 g/L, which was about 3 times as much as that of conventional flask cultivation. In the fed-batch cultivation, the productivity of Agaricus blazei mycelia was 12.01 g/L during 10 days.
4,000원
