• Journal of the FoodService Safety
• /
• v.4 no.1
• /
• pp.21-28
• /
• 2023

Saccharomyces cerevisiae and Zygosaccharomyces rouxii are known to produce alcohol in gochujang. To reduce alcohol production, garlic and chives were applied to gochujang solution to find their inhibitory effect on S. cerevisiae and Z. rouxii. The 70% ethanol extract of garlic and chives showed significant inhibition activity against S. cerevisiae and Z. rouxii, showing growth inhibition zone of 14.00±0.00~25.33±0.58 mm by disc diffusion method. In addition, the addition of 70% ethanol extract of garlic and chives in 10% gochujang solution spiked with S. cerevisiae and Z. rouxii reduced the numbers of total aerobic bacteria (below 7 Log CFU/g) and yeast (below 4 Log CFU/g), alcohol content (below 0.30%), respectively. In conclusion, the addition of garlic ethanol (70%) extract or chives ethanol (70%) extract to gochujang inhibited the growth of S. cerevisiae and Z. rouxii, resulting in reduced alcohol content in gochujang. For further study, it is necessary to conduct food application experiments by using real gochujang paste.

• 대한핵의학회:학술대회논문집
• /
• 1972.11a
• /
• pp.70.2-70.2
• /
• 1972

• Korean Journal of Food Science and Technology
• /
• v.35 no.4
• /
• pp.738-742
• /
• 2003

In order to estimate the mass transfer characteristics of absorption into alcohol solution of aroma compounds such as cineol, myrecene and pinene which are major aroma compounds of rosemary, dimensionless Henry's constant in 70% ethyl alcohol concentration and aroma concentration with different ethyl alcohol concentration were analyzed. From the results of measurement of vapor phase concentration of aroma compounds with different ethyl alcohol concentration, headspace concentrations of all of three aroma compounds were decreased as ethyl alcohol concentration increased. But those patterns were slightly different. Dimensionless Henry's constant equation (Hi) of cineol compound with ethyl alcohol concentration (x) was as follows: $Hi=(-5.75+x)/(-7017.6+257.3{\times}x)$. Dimensionless Henry's constants of cineol, myrecene and pinene in 1 atm, $25^{\circ}C$ and 70% ethyl alcohol concentration were 0.0058, 0.0182 and 0.0365, respectively.

• Journal of the Korean Dietetic Association
• /
• v.4 no.2
• /
• pp.235-244
• /
• 1998

Hand washing is an important component of hygiene program for food handlers. Hands can be a source of direct or indirect contamination of foods with pathogenic microorganisms. In this study, the effectiveness of hand washing methods and the use of 70% alcohol solution against transient skin bacteria was tested in an university foodservice facility. 70% alcohol solution is sprayed for 5 seconds automatically when hands are placed in the dispenser. Samples were taken using swab technique in meat cutting area, vegetable trimming area, and vegetable cutting area: before and after washing hands according to planned methods, and after being sprayed with 70% alcohol solution after washing hands. The bacteriological analysis of total plate counts, coliform, fecal coliform of food handlers' hands was done. Statistical data analysis was completed with Mann-Whitney U test and Kruskal-Wallis model using the SPSS program. The levels of initial contamination of workers' hand were significantly different by the work areas($x^2$=9.156, p<0.01). Workers in the vegetable trimming area had more heavily soiled hands than in the other work areas. Mean of TPC counts and coliform was 8.97×$10^5$ CFU/12.4$cm^2$, 2.93×$10^2$ MPN/12.4$cm^2$ respectively, but fecal coliform was not detected. Transient bacteria were removed from hands after washing and using 70% alcohol solution but were not removed completely. Mean reduction percentage in TPC varied among work areas and ranged from 93.19% to 94.99%, and in coliforms from 97.31% to 100%. A significant difference in TPC was found between before and after hand disinfection (Z=-2.714, p<.01) and between standardized hand washing procedures and un-standardized hand washing procedures(z=-2.301, p<.01). Subjects using the hand sanitizer showed a great elimination of TPC(99.45% reduction), but this effect was valid only after following proper washing procedures. Based on the results, the most effective hand washing method was recommended as the combination of the standardized hand washing procedure with warm-water and use of the 70% alcohol solution. The results can be used to develop hand hygiene programs and training strategies for enhancing hand hygiene practices for food handlers in foodservice operations.

• 주류산업
• /
• v.28 no.4
• /
• pp.70-73
• /
• 2008

• 주류산업
• /
• v.28 no.3
• /
• pp.70-71
• /
• 2008

• Journal of Sericultural and Entomological Science
• /
• v.53 no.2
• /
• pp.118-123
• /
• 2015

The structural transition of silk protein has been induced by various method including alcohol treatment. To know the effect of alcohol concentration on silk beads conformation, silk beads were prepared in different alcohol concentration (100%, 70%, and 50%) and then examined the infrared spectra of silk beads. Silk beads prepared in 100% alcohol showed at $1265cm^{-1}$ attributed ${\beta}-sheet$ conformation and did not showed a characteristic absorption peak from model drug. However, silk beads in 70% and 50% alcohol showed some peaks originated from model drug including $2933cm^{-1}$, $1069cm^{-1}$, and $973cm^{-1}$. These results means that the micro-environment of silk beads was affected by alcohol concentration.

• The Journal of Internal Korean Medicine
• /
• v.40 no.3
• /
• pp.331-342
• /
• 2019

Objectives: Samul-tang is commonly used to alleviate the side effects of chemotherapy. This study aimed to establish an efficient method of extracting ACTS002 based on Samul-tang using the yield, high-performance liquid chromatography (HPLC), and antioxidant assay. Methods: ACTS002 was extracted from each extraction solvent, and the contents of 5-hydroxymethyl-2-furaldehyde (5-HMF), paeoniflorin, and ferulic acid were quantitatively analyzed and compared using HPLC. Moreover, the antioxidant activities of ACTS002 were measured using total flavonoids, total phenolic compounds, 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), and Ferric reducing/antioxidant power (FRAP). Results: All of the components were set as the index contents because they were easy to process. The antioxidant activity of total flavonoids was the highest in 70% ethyl alcohol extracts, and total phenolic compounds were the highest in 50% ethyl alcohol extracts. In DPPH, 50% ethyl alcohol extracts showed the highest activity, and in ABTS 70% ethyl alcohol extracts were the highest. In FRAP, 70% ethyl alcohol extracts showed the highest activity. Conclusions: ACTS002 can control quality by setting 5-HMF, paeoniflorin, and ferulic acid as the index contents. The antioxidant activity measurement was relatively high in the 50% and 70% ethyl alcohol extracts. Our results can predict the possibility of a pharmacological activity and the standardization of ACTS002.

• Journal of Nutrition and Health
• /
• v.41 no.3
• /
• pp.232-241
• /
• 2008

Moderate alcohol consumption has been known to be associated with reduced risk for coronary heart disease (CHD). We assessed the association between alcohol consumption and CHD-related risk factors [hypertension, diabetes mellitus (DM) , high total cholesterol, high triglyceride (TG), low HDL-cholesterol (HDL-C), and high LDL-cholesterol (LDL-C)] in Korean. After excluding those with extreme intake values, the number of final subjects included in the analysis was 4,662 Korean adults aged over 20 years (1,961 men, 2,701 women) who participate in the 2005 Korean National Health and Nutrition Examination Survey. The subjects were divided into four or five groups; none-alcohol consumption group, moderate alcohol consumption group (<15 or 15.0-29.9 g/d), heavy alcohol consumption group (30-69.9 g/d or ${\geq}$ 70 g/d in men, ${\geq}$ 30 g/d in women). Odds ratios (ORs) were estimated from logistic regression adjusting for potential covariates. Alcohol consumption was inversely associated with low HDL-C in both men and women. However, heavy alcohol intake (${\geq}$ 70 g/d) significantly increased risk for hypertension, DM, and hypertriglyceridemia in men. The frequency of alcohol intake was also associated with CHD risk. The risk for low HDLC was decreased with alcohol consumption (${\geq}$ 1 times/wk), but frequent alcohol intake (${\geq}$ 4 times/wk) increased the risk for hypertension. This study revealed that moderate alcohol consumption has protective effect on CHD-related risk factors in Korean population.

• Microbiology and Biotechnology Letters
• /
• v.14 no.5
• /
• pp.415-420
• /
• 1986

Alcohol fermentation of uncooked naked barley was carried out by the combined action of the maceration enzyme from black Aspergillus niger and the glucoamylase from Rhizopus sp. The combined enzyme preparation was found to be effective in maceration and saccharification of the raw naked barley starch. The Hydrolysis rate measured by the amount of glucose liberated reached more than 70% at pH 4.5 and 3$0^{\circ}C$ after 76 hrs. For alcohol fermentation without cooking, the naked barley mash of 18% initial total sugar was pretreated with concentrated sulfuric acid (0.15 weight % of the mash volume) at 55$^{\circ}C$ for 2hr, and used for alcohol fermentation. A simultaneous saccharification and fermentation was carried out at pH 4.8 and 3$0^{\circ}C$ for 96 hrs. Under this fermentation condition, 3.5% increase in alcohol yield together with 2.0% increase in alcohol concentration were obtained when compared with the conventional cooking fermentation.