• Journal of the Korean Society of Food Science and Nutrition
• /
• v.32 no.6
• /
• pp.864-869
• /
• 2003

In order to expand the acceptability of irradiated foods by public, substantial basic data about the change of nutrient contents during irradiation are needed. The nutrient contents and digestibility of macronutrients such as carbohydrates, proteins and lipids in foods are known to be not significantly influenced by irradiation treatment. However, some of the vitamins among micronutrients are susceptible to irradiation to a large extent depending upon the food composition, food process and storage condition. This study was conducted to investigate change of thiamin in chicken breast, and vitamin C in strawberry and mandarine orange after irradiation. The effects of irradiation at frozen or refrigerated state and the effects of cooking such as heating or micron ave on thiamin contents in chicken breast were observed. Irradiation reduced the thiamin content, however, temperature condition during irradiation was much more important factor to the loss of thiamin contents. In strawberry, vitamin C content was significantly affected by original content or the variety rattler than treatments such as irradiation, heating or microwave. These results indicated that the losses of water-soluble vitamins, especially thiamin or vitamin C, are affected by food temperature during irradiation process and variety or composition of foods rallier than irradiation itself, within an acceptable range of irradiation.

• Korean journal of food and cookery science
• /
• v.7 no.4
• /
• pp.35-40
• /
• 1991

The sensory evaluation by Preference test revealed that the best Kongjook was obtained when the soymilk was prepared with eight-times of water to the volume of soybean. Based on the results, the ratios of soybean: rice: water (v/v/v) having 2:1:16($G_1$), 3:2:24($G_2$), 3:2:30($G_3$),and 4:3:32($G_4$), were chosen. The soaked rice was cooked with soymilk, Kongjook prepared from $G_2$ and $G_4$, showed the highes preference in eating quality and flavor, but the former had better quality in consistency and color, indicating that Kongjook from $G_2$ was the most preferable. The cooking time of soybean prior to the preparation of soymilk also showed that Kongjook prepared from $G_2$ had better preference than other samples regardless of the cooking times of soybean. The spreadability of Kongjook from $G_2$ determined with a line-chart method was 5.85.

• Food Science and Preservation
• /
• v.21 no.5
• /
• pp.710-717
• /
• 2014

This study was designed to develop dish recipes using Heatsun sprouts to improve the sprouts' utilization and consumption. We created four kinds of dishes with Heatsun sprouts, including Acanthopanacis cortex, Kalopanax pictus, Aralia elata, and Cedrela sinensis, and analyzed their sensory properties and nutrients. In the sensory evaluation, the overall preference for all the dishes was scored higher than 3.0, Unnaumsun-dakgoginaengchae had the highest score (4.48) among the dishes. Unnamusun-dakgoginaengchae contained higher values of protein; vitamin A, E, and B6; and folic acid than the recommended dietary allowances (RDAs). The recipe for Dureupgokgammuchim was created to reduce the bitterness and the astringent taste of Aralia elata, and it was rich in vitamin C, E, and B6, as well as in folic acid and iron. Ogapisunkkonchijolim was cooked to reduce the fishy smell of a saury with the addition of Acanthopanacis cortex. It contained 1.5 times the protein RDAs, and high levels of antioxidant vitamins, including vitamin A, C, and E. Chamjugmandu was made by the mixing tofu and various vegetables without adding meat. It had the highest calorie count among the dishes, and its vitamin A, C, and E contents were higher than the corresponding RDAs.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.39 no.3
• /
• pp.205-213
• /
• 2013

This study was to improve cosmetical activity of thiamine di-lauryl sulfate (TDS) by encapsulation of nanoparticle with lecithin. Results showed that most of the nanoparticles containing the TDS were well formed in round shape with below 150 ~ 200 nm diameter as well as they were fairly stable in various pH ranges by measuring zeta potentials. The nanoparticles of TDS resulted in 85% cell viability of human normal fibroblast cells (CCD-986sk) when added at the highest concentration (1.0 mg/mL). The nanoparticles of Acer mono sap showed highest free radical scavengering effect as 88.1% in adding sample (1.0 mg/mL), compared to TDS solution of non-encapsulation (81.6%). The nanoparticles of TDS reduced the expression of MMP-1 on UV-irradiated CCD-986sk cells down to as 41.4%. The TDS solution and nanoparticles showed significant anti-microbial activities agaionst the salmonella typhimurium and listeria monocytogenes at 5 and 6 days as compared with control. Anti-microbial activities of TDS nanoparticles were similar to positive control. These results indicated that TDS nanoparticles may be a source for functional cosmetic agents capable of improving cosmetical activity such as antioxidant, whitening, and anti-wrinkling effects and can be further developed as natural preservative in cosmetics.

• Journal of the Korean Chemical Society
• /
• v.52 no.3
• /
• pp.239-248
• /
• 2008

study of the solid phase extraction (SPE) technique using activated carbon fiber (ACF) as a sorbent was carried out on the schedule chemicals in water. 14 different schedule chemicals, which are the hydrolysis products and simulants of chemical agents such as alkylphosphonate, thiodiglycol etc. were selected for the study. Pyridine was used as a promoter to increase the derivatization efficiency, especially to improve silylation of 3-quinuclidinol. To improve the recovery efficiency of amines in the water solution, 1 mL of 5% Et3N/MeOH was introduced into SPE-ACF before the water sample loading. Throughout this study, the optimum condition was established to detect rapidly above chemicals in water.

• Korean Journal of Microbiology
• /
• v.48 no.2
• /
• pp.171-174
• /
• 2012

THOC1/Hpr1 is one subunit of THO complex that is an evolutionally conserved assembly involved in the mRNP packaging and mRNA export during transcription elongation. In fission yeast Schizosaccharomyces pombe, an ortholog (spHpr1) of THOC1/Hpr1 was identified based on sequence alignment. A deletion mutant in a diploid strain was constructed by replacing one of spHpr1-coding region with a $kan^r$ gene using one-step gene disruption method. Tetrad analysis showed that the sphpr1 is essential for growth. Over-expression of sphpr1 from strong nmt1 promoter caused no defects of growth and mRNA export. However, repression of the sphpr1 expression resulted in growth inhibition accompanied by accumulation of poly$(A)^+$ RNA in the nucleus. These results suggest that spHpr1 is involved in mRNA export from the nucleus to cytoplasm.

• Journal of Mushroom
• /
• v.2 no.3
• /
• pp.163-167
• /
• 2004

It shows that there is the fastest growth of S. crispa in the weak acid pH5. Also, it shows that S. crispa has the best environment in the MEF media. The next desirable one was as in this array: MES, MEI, YMF, YMM, YMT, YMB, YMI, MEA, PDA. The best fungi-growth of S. crispa is shown within the 0.2% addition of multi-mineral. The slow fungi-growth of S. crispa is shown within as the opposite. The phisical growth of S. crispa has a absolute need of comparatably large amount of P,K,N,S etc as inorganic minerals. In addition of that, as a minor element, Fe, Zn, Cu, Mo, Co, Mn, Cl etc are should be included. The best fungi-growth of S. crispa is shown within the 0.1% addition of biotin. The slow fungi-growth of S. crispa is shown within as the opposite. The best fungi-growth of S. crispa is shown within the 2% addition of fructose. The slow fungi-growth of S. crispa is shown within as the opposite.

• Korean Journal of Microbiology
• /
• v.46 no.4
• /
• pp.401-404
• /
• 2010

Tho1 is a RNA-binding protein that assembles co-transcriptionally onto the nascent mRNA and is thought to be involved in mRNP biogenesis and mature mRNA export to cytoplasm in budding yeast. In fission yeast Schizosaccharomyces pombe, a homologue of THO1 (spTho1) was identified based on sequence alignment. A deletion mutant in a diploid strain was constructed by replacing one of spTho1-coding region with an ura4+ gene using one-step gene disruption method. Tetrad analysis showed that the spTho1 was not essential for growth. The spTho1 mutant did not show any defects of bulk mRNA export. However, over-expression of spTho1 from strong nmt1 promoter caused the growth defects and accumulation of poly(A)$^+$ RNA in the nucleus. These results suggest that spTho1 is involved in mRNA export from the nucleus to cytoplasm though it is not essential.

• Korean Journal of Food Science and Technology
• /
• v.22 no.6
• /
• pp.668-674
• /
• 1990

Tempeh-type fermented products were prepared from soybean, sorghum or mixture of soybean and sorghum(1 : 1) with the traditional Indonesian inoculum(LARU : mixed cultures of Rhizopus oligosporus). Fermentation increased protein and fiber contents in the soybean tempeh(ST) and tempeh of soybean-sorghum mixture(SSM). Fat content was slightly higher in sorghum tempeh(SGT) and SSM than that of control. During the fermentation, pH, soluble solid and soluble nitrogen were increased, while no significant change was found in the total solids. The trypsin inhibitor activity(TIA) and phytic acid content decreased after 32 hrs fermentation. It is suggested that Rhizopus oligosporus is capable of hydrolyzing trypsin inhibitor and phytic acid of the substrate. Thiamine and niacin contents increased in all samples as compared with the unfermented control. In amino acid level, there were some decreased in total amino acids after 32 hrs fermentation in three types of tempeh. While the concentrations of lysine, valine. tyrosine and alanine in ST, SGT and SSM were increased those of serine and glutamic acid were decreased in compare to the unfermented control.

• Korean Journal of Microbiology
• /
• v.45 no.4
• /
• pp.300-305
• /
• 2009

We constructed the deletion mutants of fission yeast Schizosaccharomyces pombe spNab2 gene that is homologous to poly(A)-binding protein NAB2 in budding yeast Saccharomyces cerevisiae, which plays crucial roles in mRNA 3' end formation and mRNA export from nucleus into the cytoplasm. A null mutant in an $h^+$/ $h^+$ diploid strain was constructed by replacing the spNab2-coding region with an $ura4^+$ gene using one-step gene disruption method. Tetrad analysis showed that the spNab2 is not essential for vegetative growth and mRNA export. However, over-expression of spNab2 cause the severe growth defects and intensive accumulation of poly(A) RNA in the nucleus. Also, the spNab2-GFP fusions were localized mainly in the nucleus. These results suggest that spNab2 is also involved in mRNA export out of the nucleus.