• Journal of Food Hygiene and Safety
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• v.26 no.4
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• pp.403-409
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• 2011

The removal amount of pesticide residue which were remained in baechu (Chinese cabbage) and perilla leaf were measured during the preparation process of kimchi. The amounts of diazinon, procymidone and endosulfan applied to chinese cabbage were $9.18{\pm}0.03$mg/kg, $22.27{\pm}0.22$ and $10.46{\pm}0.02$ mg/kg respectively. When chinese cabbage was brined with 10% salt solution for 12 hours, the removal rates of three pesticides were 22.5%, 25.3% and 0.6% for diazinon, procymidone and endosulfan, respectively. When chinese cabbage was brined and rinsed 3 times with water, the removal rates of three pesticides were 69.9%, 85.6% and 11.2% for diazinon, procymidone and endosulfan, respectively. When kimchi was prepared and fermented for 28 days at $4^{\circ}C$, the removal rates of three pesticides were 79.4%, 94.4% and 21.0% for diazinon, procymidone and endosulfan, respectively. The relative percentages of removal dose of pesticides during brining were 28.4%, 26.9% and 3.2% for diazinon, procymidone and endosulfan, respectively and which were 59.7%, 63.8% and 50.4% during rinsing and which were 11.9%, 9.3% and 46.4% during fermentation, respectively. The amounts of diazinon, procymidone and endosulfan applied to perilla leaf were $18.11{\pm}0.62$ mg/kg, $31.80{\pm}0.33$ and $12.01{\pm}0.01$ mg/kg, respectively. When perilla leaf was rinsed 3 times with water, the removal rates of three pesticides were 60.5%, 52.0% and 23.7% for diazinon, procymidone and endosulfan, respectively. When perilla leaf was rinsed and brined with 10% salt solution for 14 days, the removal rates of three pesticides were 93.9%, 92.4% and 49.6% for diazinon, procymidone and endosulfan, respectively. The relative percentages of removal dose of pesticides during rinsing were 64.5%, 56.3% and 47.8% for diazinon, procymidone and endosulfan, respectively, and which during brining were 35.5%, 43.7% and 52.2% for diazinon, procymidone and endosulfan, respectively.

• The Korean Journal of Food And Nutrition
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• v.16 no.2
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• pp.123-129
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• 2003

Kimchi made with the addition of 2 percent of boiled overgrown antler, raw overgrown antler, overgrown antler treated with lactic acid(acid treated overgrown antler) has been fermented for 15 days at 11 $^{\circ}C$. After 15 days of fermentation, the results show that pH of boiled overgrown antler Kimchi was 3.82, that of raw overgrown antler Kimchi was 4.07, acid treated overgrown antler Kimchi was 3.98 control Kimchi was 3.86, and acidity of boiled overgrown antler Kimchi was 7.2 that of raw overgrown antler Kimchi was 10.1, that of acid treated overgrown antler Kimchi was 8.6, control Kimchi was 6.9, respectively. After 15 days, total sugar content was 1.20% in boiled overgrown antler Kimchi, 0.46% in raw overgrown antler Kimchi, 1.15% in acid treated overgrown antler Kimchi, 1.46 % in control Kimchi, and reducing sugar was 0.47% in boiled overgrown antler Kimchi, 0.09% in raw overgrown antler Kimchi, 0.58% in acid treated overgrown antler Kimchi and 0.39% in control Kimchi, respectively. Amino acid content was 16.35${\mu}$mol/m1 in boiled overgrown antler Kimchi, 20.83${\mu}$mol/ml in raw overgrown antler Kimchi, 15.06${\mu}$mol/m1 in acid treated overgrown antler Kimchi, 17.60${\mu}$mol/m1 in control Kimchi, and protein was 1.830% in boiled overgrown antler Kimchi, 2.011% in raw overgrown antler Kimchi, 2.101% in acid treated overgrown antler Kimchi and 2.011% in control Kimchi, respectively. Lactic acid content was 2.036% in raw overgrown antler Kimchi, 1.485% in acid treated overgrown antler Kimchi, 0.954% in boiled overgrown antler Kimchi, 1,200% in control Kimchi, and the content of succinic acid and acetic acid was highest in acid treated overgrown antler Kimchi, and the result was 0.1531% and 0.188%, respectively. The number of microorganism was 0.96${\times}$10$\^$8/g∼3.05${\times}$10$\^$8/g. The number of microorganism was highest in raw overgrown antler Kimchi, and followed by acid treated overgrown antler Kimchi, control Kimchi, and boiled overgrown antler Kimchi, respectively, The results of test of the saltness, sour, aroma, color, texture through sensory evaluation reveal that boiled overgrown antler Kimchi and raw overgrown antler Kimchi has the excellent taste, and followed by control Kimchi, acid treated overgrown antler Kimchi, respectively.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.2
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• pp.250-257
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• 2014

To develop vinegar with immature Citrus unshiu (IC), bacterial strains with high acetic acid-producing capabilities were isolated and identified, after which their quality characteristics, total phenolic and total flavonoid contents, and antioxidant activities were measured. Five bacterial strains were isolated from naturally fermented C. unshiu, and three were identified as Acetobacter fabarum (A. sp. RIC I) and A. pomorum (A. sp. RIC II, V). A. sp. RIC V showed the highest acetic acid-producing capability and was thus chosen as the candidate strain for further acetic fermentation using IC juice. Vinegars made with 30, 35, and 40% IC juices showed acidities of 5.38, 5.38, and 5.32% and fermentation efficiencies of 73, 72, and 70%, respectively. The fermentation periods required to reach greater than 5% acidity were 11, 9, and 9 days for vinegars containing 30, 35, and 40% IC juices, respectively. Fructose and glucose contents of the vinegars increased along with total organic acid contents including acetic acid, with increasing IC juice contents. Total phenolics were 1,546.6 and $230.9{\mu}g$ GAE/mL, whereas total flavonoids were 1,004.7 and $175.1{\mu}g$ QE/mL in vinegars made with IC and mature C. unshiu (MC) juices, respectively. DPPH free radical scavenging activities were 29% and 5%, ABTS radical scavenging activities were 62.0% and 17.9%, SOA scavenging activities were 60.9% and 41.7%, and XO scavenging activities were 32.5% and 5% in vinegars made with IC and MC juices, respectively. Therefore, vinegars made with 35% and 40% IC juices using A. sp. RIC V as the acetic acid fermentation strain showed potent antioxidant activities with greater total phenolic and flavonoid contents, promoting their use as functional vinegars.

• Journal of the Korean Society of Food Science and Nutrition
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• v.35 no.2
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• pp.158-163
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• 2006

Young radishes (YR, yeolmu in Korean) were cultivated in the soil with and without sulfur. YR-Control (without sulfur) was grown in the normal soil. YR were grown in the soil with $1,818\;g/m^3$ sulfur (YR-A) and $1,818\;g/m^3$ sulfur added lime mortar (YR-B) on it, respectively. Also, we prepared YR kimchis using YR-Control, YR-A and YR-B. The kimchis were fermented at $5^{\circ}C$ for 8 weeks. The growth inhibitory effects of AGS human gastric adenocarcinoma cells of the YR samples and kimchis were investigated. YR kimchis after $4\~5$ weeks at $5^{\circ}C$ showed higher acidity of $0.88\~1.20\%$ with pH $4.3\~4.5$ and the YR kimchis kept approximately pH 4.0 until 8 weeks. The kimchi A and B using YR-A and YR-B showed faster fermentation time, higher level of Leuconostoc sp. and lower level of Lactobacillus sp. during the fermentation, comparing to the control kimchi using YR-Control. Juices from YR-A and YR-B showed higher growth inhibitory effects of AGS human gastric adenocarcinoma cells than the juice from YR-Control at the same concentration. The growth inhibitory effect of YR-A was similar to that of the YR-B. The kimchi A and B juices also exhibited higher inhibitory effects $(74\%)$ on the growth of AGS human gastric adenocarcinoma cells than that of the control kimchi $(57\%)$ at the higher concentration of $20{\mu}L/assay$. Methanol extracts from the YR-kimchis also led to the similar results to the results of the juices. These results suggested that preparing of kimchi using differently cultivated YR especially in the soil with sulfur, which can help to synthesize sulfur-containing compounds, could increase the growth inhibitory effects of AGS human gastric adenocarcinoma cells.

• Korean journal of food and cookery science
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• v.28 no.2
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• pp.207-214
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• 2012

In this study, cabbage ($Brassica$ $oleracea$ var. $capitata$) Kimchi was made packed into four kinds of packaging materials, PET vessel, PP tray, OPP/AL/PE film and Nylon/PE/LLDP film, and the effects of these packaging materials on Kimchi quality characteristics, such as lactic acid bacteria counts, salinity, sugar contents, pH, total acidity, electron donating ability were examine as well as their effects on the sensory qualities after storage at a temperature of $4^{\circ}C$. The pH change ranged from pH 6.24 to 6.43 shortly after manufacture, and did not significantly change until 7 days of storage. However, it began to decrease rapidly after 14 days. On the 35th day of storage, the acidity was 0.79% in the PET vessel and 0.83% in OPP/AL/PE. Therefore, the PET vessel and OPP/AL/PE were considered appropriate packaging materials for Kimchi storage. The salinity did not change significantly during the storage period, and the sugar content generally increased in the four kinds of packaging materials, but decreasing after the 7th day of storage. After 14 days of storage, the Kimchi stored in the OPP/AL/PE film showed the highest lactic acid bacteria counts. Although the electron donating ability was the highest after proper time for fermentation, it decreased in all the packaging materials after the proper time for fermentation. However, the OPP/AL/PE film had an antioxidant potential of up to 93.18%. In the sensory evaluation, fermented Kimchi was found to be superior unfermented Kimchi. In addition, the Kimchi stored in the OPP/AL/PE film for 14 days showed the high score of 6.70 and 6.60 in overall preference. Therefore, the results of this study provide basic knowledge on the fermentation level and packaging material's condition for commercialization of small packed cabbage Kimchi. Henceforth, industrialization must include a variety of studies under these conditions to increase the merchantability.

• Korean Journal of Food Science and Technology
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• v.49 no.5
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• pp.550-558
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• 2017

The effect of Artemisia argyi H. under liquid-state fermentation by Monascus purpureus (AAFM) on cognitive impairments has been studied in a mice model of diabetes-associated cognitive decline induced by streptozotocin (STZ). C57BL/6 mice (9 weeks of age, male) were separated into four groups: a normal control, STZ-induced diabetic mouse group (STZ group), Artemisia argyi H. (AA) 10 group (diabetic mouse+AA 10 mg/kg/day), AAFM 10 group (diabetic mouse+AAFM 10 mg/kg/day). Administration of AA and AAFM significantly improved glucose tolerance, as shown by the intraperitoneal glucose tolerance test (IPGTT), and ameliorated cognitive deficit, as shown by the behavioral tests including passive avoidance, Morris water maze, and Y-maze tests. After behavioral tests, the cholinergic system was examined by assessment of the acetylcholine (ACh) level and acetylcholinesterase (AChE) inhibitory activity, and the antioxidant system was also assessed by measuring malondialdehyde (MDA) and superoxide dismutase (SOD) levels in the brain and liver.

• Korean journal of food and cookery science
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• v.18 no.1
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• pp.1-7
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• 2002

A study on the seafood consumption was conducted from 1902 adolescent students (1110 boys and 792 girls) attending middle or high school to assess the attitude and degree of satisfaction for seafood being served in the school lunch program and ultimately to promote greater seafood consumption. A self-administered questionnaire was used to record the results. The results were as follows: Sixty percent of the respondents appeared to like or not to be reluctant to seafood. The main reasons for favoring seafood were its nutritious effect and taste. On the other hand, the reason for disliking seafood was due to its peculiar smell. In terms of cooking methods, the subjects preferred raw, fried, and grilled seafdod, whereas they disliked salt-fermented, seasoned and stewed dishes. The highly preferred seafood were crab, shrimp, tuna and squid. Only 6.6% of middle school students (MS) and 3.7% of high school students (HS) liked the seafood served in school lunch program, whereas the others responded 'so so'or disliked it. The reasons for disliking seafood being served in school lunch program were poor taste (14.7% of MS, 23.5% of HS), lack of freshness(6.3% of MS, 13.9% of HS) and unattractable cooking methods(3.4% of MS, 11.1% of HS). To promote seafood consumption in school lunch program, subjects anticipated the taste improvement (37.7% of MS, 48.5% of HS), use of a variety of seafood (19.8% of MS, 24.0% of HS) and cooking methods(12.6% of MS, 22.4% of HS). Above results suggested that further efforts are needed to provide preferred cooking methods and seafood items as a way of increasing seafood acceptability.

• Food Science of Animal Resources
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• v.23 no.4
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• pp.333-341
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• 2003

The effect of water extract of Schizandra chinensis on the growth of yoghurt starter was investigated in order to manufacture the drink type yoghurt added with water extract of Schizandra chinensis. It was the most desirable extraction conditions for Schizandra chinensis to soak in 50 times of water for 15 hours at 20$^{\circ}C$. The water extract of Schizandra chinensis showed pH 3.07, 2.39％ acidity, 1.10％ total sugars, and 0.15 optical density for color. The water extract of Schizandra chinensis was added to MRS broth medium from 0.1％ to 1.0％ and the medium was fermented by 4 types of lactic acid bacteria such as Lactobacillus acidophilus, Lactobacillus casei, Lactobacillus bulgaricus, and Streptococcus thermophilus. The addition of water extract of Schizandra chinensis inhibited the growth of the lactic acid bacteria. The maximum addition amounts of water extract of Schizandra chinensis was 0.9％ for Lac. acidophilus, 0.8％ for Lac. casei, 0.2％ for Lac. bulgaricus and 0.1％ for Str. thermophilus in order to maintain the propagation of the lactic acid bacteria. When the drink type yoghurts added with 0.4％, 0.6％, 0.8％ and 1.0％ water extract of Schizandra chinensis were kept at 4$^{\circ}C$ for 15 days, it was showed that the number of lactic acid bacteria was not significantly changed during the storage. The viable cell counts of the drink type yoghurts by addition of 0.4∼l.0％ of water extract of Schizandra chinensis were 1.13${\times}$10$\^$9/∼2.29${\times}$10$\^$9/ CFU/mL, and these bacterial counts were still more than the legal standard(1.0${\times}$10$\^$8/ CFU/mL) even at 15 days of storage.

• Food Science of Animal Resources
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• v.28 no.5
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• pp.580-586
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• 2008

Conjugated linoleic acid (CLA) is a mixture of positional and geometric isomers of linoleic acid with conjugated double bonds. These conjugated dienes were found to be responsible for many biological properties related to health. The objective of this study was to evaluate the production of cis-9, trans-11 CLA by Lactobacillus acidophilus isolated from breast-fed infants. Nine different cultures were tested for their ability to produce cis-9, trans-11 CLA from free linoleic acid in MRS broth and 8% reconstituted skim milk medium supplemented with linoleic acid at $37^{\circ}C$ for 48 hr. cis-9, trans-11 CLA was not detected or detected in very small amount when cell pellets of strains grown in MRS broth and 8% reconstituted skim milk supplemented with linoleic acid of $200{\mu}g/mL$. However, free cis-9, trans-11 CLA was produced in both media. It appeared that 8% reconstituted skim milk produced more cis-9, trans-11 CLA than MRS broth. L. acidophilus NB 203 and NB 209 produced more cis-9, trans-11 CLA than other tested cultures. The inhibitory effects of supplemented linoleic acid on the growth of L. acidophilus NB 203 and NB 209 were not detected up to $3,000{\mu}g/mL$ linoleic acid addition during the growth at $37^{\circ}C$ for 48 h. The production of cis-9, trans-11 CLA by these two L. acidophilus strains increased in the logarithmic growth phase until 24 hr incubation. Under this experimental condition, the best yield of CLA isomers for L. acidophilus NB 203 and NB 209 could be obtained from medium supplemented with $500{\mu}g/mL$ linoleic acid at $37^{\circ}C$ after 24 hr of incubation. These results indicate that the use of lactic acid bacteria producing free CLA in fermented dairy products may have potential health or nutritional benefits.

• Food Science and Preservation
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• v.8 no.4
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• pp.419-426
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• 2001

This study was carried out to develope a convenient instant spiced Toha-jeot. Toha-jeot was manufactured by five samples; 8%, 10%, 13% 23% sodium chloride and a conventional type soy sauce. The Toha-jeot was refrigerated at 4$\pm$1$\^{C}$ for 3 months and then boiled glutinous rice, red pepper powder, chopped garlic and ginger were added, and the spiced Toha-jeot was fermented at 4$\pm$1$\^{C}$ for 2 months, was freeze-dried at a condition of 40$\^{C}$, vacuum 100∼200 millitor millitorr and then packed in vacuum. It is called freeze-dried instant spiced Toha-jeot (FIST). Changes in the components and quality of refrigerated spiced Toha-jeot (RST) and FIST were investigated for 30day. The moisture content of RST was 53.79∼58.91%. Among the mineral constituents of RST, Na and Ca were dominantly occupying. Water activity of FIST was 0.28-0.39 while that of RST was 0.87-0.92. TBA value of FIST was lower than that of RST. Acidity, VBN (volatile basic nitrogen) and TBA(thiobarbituric acid) of the FIST and RST increased slightly, whereas pH decreased. The major components of fatty acids in FIST and RST were analysed into a feater amount of linoleic acid (Cl8:2), palmitic acid (Cl6:1), oleic acid (Cl8:1), linolenic acid (Cl8:3), EPA (C2O:5) and stearic acid(Cl8:0). In sensory evaluation, the RST had higher scores in color and taste and the FIST in chewiness and flavor. The qualitative characteristics and sensory evaluation of FIST and RST were similar.