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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Food Science and Technology
Journal Basic Information
Journal DOI :
Korean Society of Food Science and Technology
Editor in Chief :
Volume & Issues
Volume 44, Issue 6 - Dec 2012
Volume 44, Issue 5 - Oct 2012
Volume 44, Issue 4 - Aug 2012
Volume 44, Issue 3 - Jun 2012
Volume 44, Issue 2 - Apr 2012
Volume 44, Issue 1 - Feb 2012
Selecting the target year
Establishment of an Analytical Method for Novobiocin in Livestock Products Using HPLC-UVD
Park, Hee-Ra ; Kwon, Chan-Hyeok ; Lee, Jong-Goo ; Kim, Hyung-Soo ; Chae, Young-Sik ; Oh, Jae-Ho ; Kwon, Ki-Sung ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 263~268
DOI : 10.9721/KJFST.2012.44.3.263
Novobiocin is a coumarin-containing antibiotic, and has a longer half-life in various animals than other veterinary medicines. A simple and rapid high-performance liquid chromatography assay for the determination of residual novobiocin levels in chicken, beef and milk has been developed and validated. The separation condition for HPLC/UVD was optimized by a MG II
) column with 0.1% formic acid in
/0.1% formic acid in Acetonitrile (40/60, v/v) as the mobile phase at a flow rate of 1.0 mL/min and the detection wavelength was set at 340 nm. Residues were extracted from tissue by blending with methanol. After liquid-liquid partitioning, lipid materials were removed with n-hexane and purification as Silica (1 g, 6 mL) cartridge with 10 mL acetone/dichloromethane (10/90, v/v). Limit of quantification and linearity performed by the analytical method were 0.02 mg/kg and 0.999 (
), and the recovery range was
. It is expected that this analytical method with regards to novobiocin in chicken, beef and milk could be applied as an official method to administer food safety on veterinary medicines.
Benzo(a)pyrene Contents in Commercial Vegetable Oils and Changes during Processing of Vegetable Oils
Sung, Tae-Kyung ; Lee, Ji-Soo ; Lee, Hyeon-Gyu ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 269~273
DOI : 10.9721/KJFST.2012.44.3.269
The principal objective of this study was to estimate the benzo(a)pyrene contents in commercial vegetable oils available in the Korean market and to assess the effects of various processing steps for vegetable oils on the contents of benzo(a)pyrene. Benzo(a)pyrene content in the studied commercial vegetable oils, crude oils, and raw materials were found to be lower than the maximum levels of 2 ppb. In both refined and pressed oil, the benzo(a)pyrene contents can be reduced through refining steps. However, an evident increase of benzo(a)pyrene contents during both the expeller process for corn oil and the roasting process for sesame oil was observed. This result indicates that the processing procedure, particularly heat treatment and refining steps would be critical in managing the benzo(a)pyrene contents in vegetable oils.
Dissolution Profile Analysis of Hydroxypropyl Methylcellulose-based Vitamin C Tablets
Cha, Ja-Hyun ; Hong, Jun-Kee ; Lee, Sung-Wan ; Cha, Jae-Uk ; Ko, Won-Hwa ; Baek, Hyon-Ho ; Park, Hyun-Jin ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 274~279
DOI : 10.9721/KJFST.2012.44.3.274
The objective of this study was to develop oral matrix tablets for the sustained release of vitamin C. In this study hydroxypropyl methylcellulose (HPMC) has been utilized as an excipient, as it is one of the most widely used polymers, for use during long periods of time in formations. The vitamin C tablet formulation depends on the molecular weight and concentration of sustained-delivery in HPMC. Anti-oxidants have been added as a dissolution medium in order to prevent vitamin C degradation in water. The dissolution test was carried out in a distilled water medium, and the release model equation was applied to analyze the vitamin C release pattern. The results demonstrated that the release and lasting power of vitamin C tablets, containing HPMC, lasted for more than 12 h.
Physicochemical Properties of Different Grape Varieties Cultivated in Korea
Ahn, Hyuk-Jin ; Son, Hong-Seok ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 280~286
DOI : 10.9721/KJFST.2012.44.3.280
The aim of this study was to describe the effects of genetic factors on the chemical composition or metabolites of grapes harvested within the same region. Grapes were separated into pulp, skin, and seed, and physicochemical characteristics were compared among seven grape varieties. The sugar concentrations of the grape musts ranged from
with Seibel variety being highest at
. pH ranges of grape musts were 3.46-4.02 and total acidity was highest with 1.05 in Steuben variety. Tartaric acid content was highest with 146.68, 500.10 mg/L in pulp and skin extract of Merlot variety. Malic acid content was highest in pulp extract of Seibel variety (1127.14 mg/L) and skin extract of Chardonnay variety (1720.06 mg/L). K content was highest with 379.13 and 828.01 mg/L in pulp and skin extract of Chardonnay variety. Ca content was highest in pulp extract of Kyoho variety (6.98 mg/L) and skin extract of Campbell Early variety (12.26 mg/L).
Effects of Light on Temperature Dependence of Safflower Oil Oxidation and Tocopherol Degradation
Wang, Sun-Yeong ; Choe, Eun-Ok ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 287~292
DOI : 10.9721/KJFST.2012.44.3.287
Light effects on temperature dependence of safflower oil oxidation and tocopherol degradation were studied. Safflower oil was oxidized at 20, 40, 60, or
for 30, 30, 15, and 6 days, respectively, in the dark or under light. Oil oxidation was evaluated with peroxide value (POV) and conjugated dienoic acid (CDA) value, and tocopherols were monitored by HPLC. Safflower oil consisted of palmitic, stearic, oleic, and linoleic acids at 7.3, 2.0, 14.2, and 76.6%, respectively, with tocopherols at 1157.1 mg/kg. Peroxide and CDA values of safflower oil increased while tocopherol contents decreased with the oxidation time and temperature. Light increased and accelerated the oil oxidation and tocopherol degradation. Temperature dependence of the oil oxidation and tocopherol degradation was higher in the dark rather than under light. The results suggest that temperature control could be more essential in the dark rather than under light with regard to the oxidative stability of safflower oil.
Analysis of Residual Fluoroquinolones Contents in Fish
Park, Young-Ae ; Yuk, Dong-Hyun ; Kim, Su-Un ; Kim, Jin-Ah ; Park, Ae-Sook ; Kim, Youn-Cheon ; Kim, Moo-Sang ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 293~299
DOI : 10.9721/KJFST.2012.44.3.293
The residual contents of fluoroquinolones in fish and shrimp were analyzed by using HPLC-FLD and LC-MS. The limit of detection (LOD) and limit of quantification (LOQ) for fluoroquinolones by HPLC-FLD were 0.0030-0.0083 and 0.0090-0.0252 mg/kg, respectively. Those by LC-MS were 0.0019-0.0040 and 0.0059-0.0122 mg/kg, respectively. Recoveries regarding ofloxacin, norfloxacin, pefloxacin, ciprofloxacin and enrofloxacin ranged from 76.4-104.6%. The detection rate of fluoroquinolones was 7.5% from a total of 268 samples. In only one Korean bullhead sample, the sum of ciprofloxacin and enrofloxacin contents was detected at a higher level than its maximum residue limits (MRL) of 0.1 mg/kg. Ofloxacin, norfloxacin and pefloxacin were not detected in any samples and detection rates of ciprofloxacin and enrofloxacin were 3.4% and 6.7%, respectively. In detection rate by species eel (2.6%), loach (2.2%), Korean bullhead (1.5%), carp (0.7%) and snakehead (0.4%) were in order.
Changes in Quality Properties of Brown Rice after Germination
Kim, Dae-Jung ; Oh, Sea-Kwan ; Lee, Jeong-Heui ; Yoon, Mi-Ra ; Choi, Im-Soo ; Lee, Dong-Hyen ; Kim, Yeon-Gyu ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 300~305
DOI : 10.9721/KJFST.2012.44.3.300
The objective of this study was to evaluate quality properties, including amylose, alkali digestion value (ADV), and amylogram, of brown rice and germinated brown rice of some cultivars in Korea for rice processing products. The protein content of brown rice was significantly higher than those of germinated brown rice. The amylose content of the samples ranged from 17.09 to 18.85%. Alkali digestion value (ADV) of brown rice and germinated brown rice were described as a grade of 2-5 and 4-7, respectively. In a rapid visco analyzer (RVA) examination, pasting temperature of brown rice and germinated brown rice was
. In addition, the pasting characteristics of brown rice were significantly higher than those of germinated brown rice. A texture analysis test showed that germinated brown rice Haiami had the lowest hardness and germinated brown rice Samkwang had the highest adhesiveness.
Alcohol Fermentation of Uncooked Ground Rice with Ultrasonication Process
Lee, You-Jin ; Kang, Sung-Tae ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 306~311
DOI : 10.9721/KJFST.2012.44.3.306
This study was performed to evaluate the effects on saccharification and alcohol fermentation, according to the size of the ground rice (12, 20, 35 mesh) and ultra sonication process (15, 30, 60, 120 min). After saccharification of the ground rice samples for 3 h at
, sugar content was observed to be high in the order of cooked ground rice (CGR) > ultrasonicated ground rice (UGR) > ground rice (GR), in all sizes of ground rice. Further, higher sugar content was obtained by increasing the time of ultrasonication process. Almost 90% saccharification of CGR (
) could be reached up to
by ultrasonicating 35 mesh ground rice for 120 min. After alcohol fermentation on the 35 mesh saccharified-UGR for 4 days at
, 16.7% alcohol concentration could be obtained, as high as of CGR (17.2%). After 4 days of alcohol fermentation, UGR showed a lower pH and a higher acidity (pH 4.06-4.17, 0.99-1.1%) than CGR (pH 4.27, 0.75%).
The Resistance of Bacillus subtilis in Makgeolli to Hydrostatic Pressure
Lee, Eun-Jung ; Kim, Joo-Sung ; Oh, Se-Wook ; Kim, Yun-Ji ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 312~316
DOI : 10.9721/KJFST.2012.44.3.312
In order to understand the effect of hydrostatic pressure (HP) on Bacillus subtilis isolated from makgeolli, the survival of B. subtilis after HP treatment (400 MPa for 5 min) in various substrates including phosphate buffer, tryptone soya broth at pH 7 and 4, and makgeolli at pH 4 was evaluated depending on bacterial forms (spores and vegetative cells) and adaptation conditions (
for 3 h, or
for 24 h). Spores were generally resistant to HP (<1 log reduction) regardless of conditions. In contrast, vegetative cells were generally susceptible to HP (up to 3 log reduction-except makgeolli) and were more susceptible after 3 h at
compared to 24 h at
. In vegetative cells inoculated makgeolli (7 log CFU/mL), the colonies were not detected after 24 h at
. Consequently, B. subtilis in makgeolli easily existed as spores and the spores were resistant to HP. Results demonstrate that HP was more promising in the inactivation of vegetative cells.
Cultivated Orostachys japonicus Induces Apoptosis in Human Colon Cancer Cells
Kim, Jae-Yong ; Jung, Eun-Jung ; Won, Yeong-Seon ; Lee, Ju-Hye ; Shin, Dong-Young ; Seo, Kwon-Il ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 317~323
DOI : 10.9721/KJFST.2012.44.3.317
This study was performed to elucidate the anticancer activities and the mechanism of chloroform fractions from cultivated Orostachys japonicus (CFCOJ) in human colon cancer cells. CFCOJ markedly decreased viable cell numbers in both a dose-dependent and time-dependent manner within SW480 cells. Cell death induced by CFCOJ increased cell populations in the sub-G1 phase, as well as the formation of apoptotic bodies, nuclear condensation, and induced DNA fragmentation. CFCOJ-induced apoptosis was associated with the activation of initiator caspase-8 and -9, as well as the effector caspase-3. CFCOJ also stimulated Bid cleavage, indicating that the apoptotic action of caspase-8-mediated Bid cleavage leads to the activation of caspase-9. CFCOJ increased the expression of the proapoptotic protein, Bax, and decreased the expression of the antiapoptotic protein, Bcl-2. These results indicate that CFCOJ exert anticancer effects on human colon cancer SW480 cells through a caspase-dependent apoptotic pathway.
Effects of Lactobacillus plantarum CIB 001 on Lipid Metabolism of Hypercholesterolemic Rats
Cha, Sang-Do ; Yu, Ji-Won ; Kim, Tae-Woon ; Cho, Ho-Seong ; Lee, Dong-Hee ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 324~330
DOI : 10.9721/KJFST.2012.44.3.324
The aim of the present study was to assess the anti-hypercholesterolemic effect of bile salt hydrolase-producing Lactobacillus plantarum CIB 001 (KCTC 11717 bp) in rats fed a high-cholesterol diet. Four treatment groups of rats (n=5) were fed experimental diets: a normal diet (ND), a ND plus L. plantarum CIB 001(NDL) at
colony forming unit (CFU)/day, a high-cholesterol diet (HCD), as well as a HCD plus L. plantarum CIB 001 (HCDL) at
CFU/day for 6 weeks. Compared with the HCD group, the HCDL group demonstrated a decrease in serum triglyceride (p<0.05), total cholesterol (p<0.05), and the corresponding HDL-cholesterol concentration increased at a rate of 40% (p<0.05). The HCDL group also induced a decrease in liver inflammation and steatosis. The present results suggest that supplementation of L. plantarum CIB 001 can have short-term (6 weeks) effects on blood lipids and liver injury, as well as on the atherogenic index and cardiac risk factors.
Improvement of Anti-Inflammation Activity of Gardeniae fructus Extract by the Treatment of β-Glucosidase
Shon, Dong-Hwa ; Choi, Dae-Woon ; Kim, Mi-Hye ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 331~336
DOI : 10.9721/KJFST.2012.44.3.331
In this study, we selected Gardeniae fructus (GF) as an anti-inflammatory functional material and improved the biological activity of GF through the treatment of
-glucosidase. For the simple evaluation of anti-inflammatory activity, the inhibitory activity of GF extract (GFE) on the production of NO by RAW264.7 cells in the presence of LPS was examined.
-glucosidase originating from Aspergillus niger or Aspergillus fumigatus has effectively improved the anti-inflammatory activity of GFE. The enzyme treatment raised the activity of GFE by more than 10 times. The optimum conditions for the enzyme reaction were at pH 4.6,
, and 20 U/mL for 24 h with agitation. In addition, in vitro production of cytokines (IL-
, IL-6, TNF-
), COX-2, and the NF-
activation of RAW264.7 cells decreased more in the presence of GFE treated with
-glucosidase originating from Aspergillus niger (GFAN) than in the presence of GFE. These results suggest that enzyme-treated GFE might be a potential candidate for natural anti-inflammatory food materials.
Total Polyphenols, Total Flavonoid Contents, and Antioxidant Activity of Korean Natural and Medicinal Plants
Kim, Eun-Jin ; Choi, Joo-Yeon ; Yu, Mi-Ri ; Kim, Mi-Young ; Lee, Sang-Hyun ; Lee, Bog-Hieu ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 337~342
DOI : 10.9721/KJFST.2012.44.3.337
The purpose of this study was to investigate total polyphenols, total flavonoid, and DPPH radical scavenging activity in 26 species of Korean natural plants and 14 species of medicinal plant extracts. The plant containing the highest total polyphenols and total flavonoids were Plantago asiatica, and Lespedeza cuneata G. Don, respectively. The content of polyphenols and flavonoids in natural plants was the highest in Lespedeza cuneata G. Don, which also demonstrated high DPPH radical scavenging activity. In medicinal plant extract, Saururus chinensis (Lour.) Baill and Artemisiae Asiaticae Herba had the highest level of total polyphenols (194.60 and 203.92 mg/g extract, respectively) and DPPH radical scavenging activity. Diospyros kaki Thunb and Dryopteris crassirhizoma did not contain high levels of total polyphenols (112.98, 121.46 mg/g extract, respectively) and flavonoids (46.10, 58.69 mg/g extract respectively), but DPPH radical scavenging activity was relatively high. Further study regarding plants that exhibit higher total polyphenols, total flavonoid, and DPPH radical scavenging activity is needed.
Immuno-stimulating Activities of Mannose-rich Polysaccharides Isolated from Korean Black Raspberry Wine
Lee, Ho ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 343~349
DOI : 10.9721/KJFST.2012.44.3.343
Polysaccharides isolated from Korean black raspberry wine were examined for their chemical properties and immuno-modulating activities. The molecular mass of RB-1b-I, the main polysaccharide in black raspberry wine, was estimated as 180 kDa and it contained a significant proportion of mannose (76.8%) and 4 different minor component sugars such as galactose (15.8%), arabinose (3.8%), glucose (2.6%) and rhamnose (1.2%). This indicated that RB-1b-I was mainly present as a mannan, which had originated from the cell walls of fermenting yeasts. On the other hand, RB-1b-I induced high levels of macrophage activation as well as mitogenicity regarding murine splenocytes in vitro. The intravenous administration of RB-1b-I significantly augmented NK cytotoxicity against YAC-1 tumor cells. RB-1b-I also showed potent anti-complementary activity in a dose-dependent manner via both alternative and classical pathways. Results indicated that Korean black raspberry wine contains peculiar polysaccharides which provide beneficial immuno-stimulating activities for human health.
A Comparative Study on the Physiological Activities of Auricularia spp.
Jo, Se-Hyun ; Kim, Tae-Ho ; Yu, Young-Bok ; Oh, Jin-A ; Jang, Mi-Hyang ; Park, Ki-Moon ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 350~355
DOI : 10.9721/KJFST.2012.44.3.350
This study investigated the physiological effects of three species of Auricularia known as Auricularia polytricha (JNM21001), Auricularia auricula-judae black (JNM21002), and Auricularia auricula-judae brown (JNM21012). In the ORAC assay, Auricularia spp. showed antioxidant activities in the order of JNM21001>JNM21012>JNM21002. All Auricularia spp. strongly inhibited the action of
-amyloglucosidase up to 60%. In order to further test in vivo anti-obesity effects, high fat diet induced ICR obese mice fed a diet containing 20% fat were used. All Auricularia spp. supplementation during high fat diet feeding significantly reduced body weight gain, epididymal fat pads weight, and lowered the food efficiency ratio compared to the high fat control (HFC) group. In particular, the group fed with JNM21012 had a lower average daily body weight gain of 0.45 g/day, demonstrating similar levels to the normal diet fed group. The group fed with JNM21012 significantly reduced lowered serum triglycerides (42%), total cholesterol (81%), and LDL-cholesterol level (66%) compared with the HFC group.
Evaluation of Cytotoxic Properties of Caffeine Treated with Over-the-counter Drugs in the Intestinal Cells
Choi, Hyun-A ; Kim, Mi-Ri ; Park, Kyung-A ; Hong, Jung-Il ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 356~361
DOI : 10.9721/KJFST.2012.44.3.356
Caffeine is a xanthine alkaloid derivative found in many foods and beverages. Dietary caffeine may interact with commonly-consumed over-the-counter (OTC) drugs in body. In this study, cytotoxic effects on the intestinal cells by combined treatment of caffeine with several OTC drugs, including ibuprofen, aspirin, and acetaminophen. Cytotoxic effect of caffeine was more potent in normal intestinal INT 407 cells than in colon cancer HCT 116 cells. Relative toxicity of caffeine and the OTC drugs was significantly enhanced in INT 407 cells when treated together. Intracellular thiol levels of the cells treated with the OTC drugs increased in the presence of caffeine. When HCT 116 cells were incubated with each OTC drug after or before caffeine treatment, the relative cytotoxicity of the OTC drugs increased. The present study may provide basic information about possible health effects through the interactions between caffeine and OTC drugs in the intestinal cells.
Inhibitory Activity of Intracellular Lipid Accumulation by Various Marine Extracts in HepG2 Cells
Kim, Byoung-Mok ; Jung, Ji-Hee ; Kim, Dong-Soo ; Kim, Young-Myoung ; Jeong, In-Hak ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 362~366
DOI : 10.9721/KJFST.2012.44.3.362
This study was performed to promote the effective utilization of edible marine resources and to develop functional food material from edible marine resource extracts for inhibiting lipid accumulation in liver. Edible marine resource extracts (ME) were prepared by hot water (MWE) and 80% ethanolic (MEE), and both the MWE and MEE extracts were assessed as to their cell cytotoxicity, and Oil Red O staining. Results demonstrated that ME showed no cytotoxic effects. However, treatment with MEE in the concentration of 1000, 500, and 250
significantly inhibited the lipid accumulation in HepG2 cells compared to MWE. Especially, among the 80% ethanolic extracts, Pagrus major, Larimichthys polyactis, Clupea pallasii, Octopus minor, Enteroctopus dofleini, Styela clava, dried sea mustard, and Enteromorpha intestinalis showed greater lipid accumulation inhibitory activity than the others.
Antioxidant Effects of Extracts from Fermented Red Ginseng Added with Medicinal Herbs in STZ-induced Diabetic Rats
Kim, Hyun-Jeong ; Lee, Sung-Gyu ; Park, Sung-Jin ; Yu, Mi-Hee ; Lee, Eun-Ju ; Lee, Sam-Pin ; Lee, In-Seon ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 367~372
DOI : 10.9721/KJFST.2012.44.3.367
Antioxidant and anti-hyperglycemic activities of fermented red ginseng added with 5 kinds of medicinal herbs (FRGM) were investigated in vitro. Total polyphenol and total flavonoid contents in FRGM extracts were
, respectively. FRGM extracts were capable of directly scavenging DPPH free radicals (
), and then showed higher inhibitory activities for
-glucosidase. This study was also conducted to evaluate the effects of FRGM extracts in streptozotocin (STZ)-induced diabetic (DM) rats. The activities with regards to serum aspartate aminotransferase and alanine aminotransferase were significantly decreased by FRGM extracts compared to those from the STZ group. The hepatic glutathione content depleted by STZ was significantly increased by FRGM extracts, but elevation of lipid peroxide content induced by STZ was significantly decreased by FRGM extracts. The decreased activities of superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase after STZ-treatment were increased through the treatment of FRGM extracts. These results indicated that fermented red ginseng added with medicinal herbs can protect against STZ-induced diabetic rats through its antioxidant properties.
Functional Properties of 50% Methanol Extracts from Different Parts of Acanthopanax sessiliflorus
Choi, Jae-Myoung ; Ahn, Jun-Bae ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 373~377
DOI : 10.9721/KJFST.2012.44.3.373
This study was carried out in order to investigate the functional properties of 50% methanol extracts from four parts (root, stem, leaf and fruit) of Acanthopanax sessiliflorus by means of measuring the contents of eleutheroside B, E, and total polyphenols as well as determining electron donating ability (EDA), nitrite scavenging ability (NSA), and anticancer activity. The highest contents of eleutheroside B and E were found in the fruit (538.99
) and the stem (556.00
). The root extract demonstrated the highest polyphenol content (2.97 mg/g). EDA of the stem and root extracts were 90.21% and 85.71%. All of the extracts showed 81.5-93.0% of NSA at pH 1.2. In addition all extracts indicated no cytotoxicity to normal cell line (DC2.4). The root extract had a 23% inhibitory effect against the stomach cancer cell line (SNU-719). These results revealed that 50% methanol extracts from A. sessiliflorus can be used as a potential resource of nutraceuticals.
Monitoring of Uniconazole by GC-NPD
Kim, Eun-Jeung ; Choi, Bu-Chuhl ; Choi, Su-Jeong ; Hong, Chae-Kyu ; Kim, Eun-Hee ; Choi, Chae-Man ; Seo, Young-Ho ; Hwang, Young-Sook ; Jang, Mi-Ra ; Hwang, In-Sook ; Kim, Moo-Sang ; Chae, Young-Zoo ;
Korean Journal of Food Science and Technology, volume 44, issue 3, 2012, Pages 378~381
DOI : 10.9721/KJFST.2012.44.3.378
The monitoring of the uniconazole residual pesticide for agricultural products was conducted by multiclass pesticide multiresidue methods. Samples were collected from June to November, 2011. Uniconazole pesticide was detected in 49 samples from a total of 3,939 samples. The amount of uniconazole pesticide ranged from 0.09 to 17.89 mg/kg in 49 samples. This method was described for the simultaneous determination of uniconazole by gas chromatography with a nitrogen phosphorus detector (GC-NPD) and mass spectrometry (MS). The limit of detection and quantification were 0.006 and 0.018 mg/kg GC-NPD, respectively. For an evaluation of the GC-NPD method, uniconazole spiked into gyeojachae at a level of 0.5, 5 mg/kg was determined. The recoveries of uniconazole by the GC-NPD method ranged from 83.4 to 101.4%. The results indicate that the method of simultaneous analysis is applicable to uniconazole analysis.